The Manageability Engine Interface allows applications to communicate with the Intel(R) Manageability Engine (ME) firmware. It is meant to be used by user-space manageability applications to access ME features such as Intel(R) Active Management Technology, Intel(R) Quiet System Technology and ASF. Signed-off-by: Anas Nashif Signed-off-by: Marek Dabek --- diff -uprN -X a/Documentation/dontdiff a/drivers/char/heci/heci_data_structures.h b/drivers/char/heci/heci_data_structures.h --- a/drivers/char/heci/heci_data_structures.h 1969-12-31 19:00:00.000000000 -0500 +++ b/drivers/char/heci/heci_data_structures.h 2007-10-22 10:30:35.000000000 -0400 @@ -0,0 +1,544 @@ +/* + * Part of Intel(R) Manageability Engine Interface Linux driver + * + * Copyright (c) 2003 - 2007 Intel Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + * + */ + +#ifndef _HECI_DATA_STRUCTURES_H_ +#define _HECI_DATA_STRUCTURES_H_ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/** + * error code definition + */ +#define ESUCCESS 0 +#define ESLOTS_OVERFLOW 1 +#define ECORRUPTED_MESSAGE_HEADER 1000 +#define ECOMPLETE_MESSAGE 1001 +#define FC_MESSAGE_RESERVED_LENGTH 5 + +/** + * Number of queue lists used by this driver + */ +#define NUMBER_OF_LISTS 7 + +#define LEGACY_MTU 4160 +#pragma pack(1) + + +/** + * HECI HW Section + */ + +/* HECI addresses and defines */ +#define H_CB_WW 0 +#define H_CSR 4 +#define ME_CB_RW 8 +#define ME_CSR_HA 0xC + + +/* register bits - H_CSR */ + +#define H_CBD 0xFF000000 +#define H_CBWP 0x00FF0000 +#define H_CBRP 0x0000FF00 +#define H_RST 0x00000010 +#define H_RDY 0x00000008 +#define H_IG 0x00000004 +#define H_IS 0x00000002 +#define H_IE 0x00000001 + + +/* register bits - ME_CSR_HA */ +#define ME_CBD_HRA 0xFF000000 +#define ME_CBWP_HRA 0x00FF0000 +#define ME_CBRP_HRA 0x0000FF00 +#define ME_RST_HRA 0x00000010 +#define ME_RDY_HRA 0x00000008 +#define ME_IG_HRA 0x00000004 +#define ME_IS_HRA 0x00000002 +#define ME_IE_HRA 0x00000001 + +/** + * heci driver use additional char device for legacy mode + */ +#define MINORS_COUNT 2 + +#define LEGACY_MINOR_NUMBER 0 +#define HECI_MINOR_NUMBER 1 +#define MAX_OPEN_HANDLE_COUNT 253 +/** + * debug kernel print macro define + */ +#define INFO(format, arg...) \ + printk(KERN_INFO "%s: " format, THIS_MODULE->name, ## arg) +#define ERR(format, arg...) \ + printk(KERN_ERR "%s: " format, THIS_MODULE->name, ## arg) +#define WARN(format, arg...) \ + printk(KERN_WARNING "%s: " format, THIS_MODULE->name, ## arg) + + +/* Module Parameters */ +/* +#define DEF_PARM(type, name, init, perm, desc) \ + type name = (init); \ + MODULE_PARM_DESC(name, desc); \ + module_param(name, type, perm) +*/ + +extern int debug; + +#define DBG(format, arg...) do {if (debug) \ +printk(KERN_ERR "%s: " format , __func__ , ## arg); \ +} while (0) + +/* +#ifdef HECI_DEBUG +#define assert(expr) do {} while (0) +#else +#define assert(expr) \ + if (!(expr)) { \ + printk("Assertion failed! %s, %s, %s, line=%d\n", \ + #expr, __FILE__, __func__, __LINE__); \ + } +#endif +*/ + +/** + * time to wait event + */ +#define HECI_INTEROP_TIMEOUT (HZ * 7) + +/** + * watch dog definition + */ +#define HECI_WATCHDOG_DATA_SIZE 16 +#define HECI_START_WD_DATA_SIZE 20 +#define HECI_WD_PARAMS_SIZE 4 + + +#define HECI_WD_HOST_CLIENT_ID 1 +#define HECI_LEGACY_HOST_CLIENT_ID 2 + +#undef FALSE +#undef TRUE +#define TRUE 1 +#define FALSE 0 + +struct guid { + __u32 data1; + __u16 data2; + __u16 data3; + __u8 data4[8]; +}; + +/* File state */ +enum file_state { + HECI_FILE_INITIALIZING = 0, + HECI_FILE_CONNECTING, + HECI_FILE_CONNECTED, + HECI_FILE_DISCONNECTING, + HECI_FILE_DISCONNECTED +}; + +/* HECI states */ +enum heci_states{ + HECI_INITIALIZING = 0, + HECI_ENABLED, + HECI_RESETING, + HECI_DISABLED, + HECI_RECOVERING_FROM_RESET, + HECI_POWER_DOWN, + HECI_POWER_UP +}; + +enum legacy_states { + HECI_LEGACY_IDLE, + HECI_LEGACY_WRITING, + HECI_LEGACY_FLOW_CONTROL, + HECI_LEGACY_READING, + HECI_LEGACY_READ_COMPLETE +}; + +enum heci_file_transaction_states { + HECI_IDLE, + HECI_WRITING, + HECI_WRITE_COMPLETE, + HECI_FLOW_CONTROL, + HECI_READING, + HECI_READ_COMPLETE +}; + +/* HECI CB */ +enum heci_cb_major_types { + HECI_READ = 0, + HECI_WRITE, + HECI_IOCTL, + HECI_OPEN, + HECI_CLOSE +}; + +/* HECI user data struct */ +struct heci_message_data { + __u32 size; + char *data; +}; +#define SECOND_TO_MILLI 1000 +#define SECOND_TO_MICRO SECOND_TO_MILLI * 1000 +#define SECOND_TO_100NANO SECOND_TO_MICRO * 10 + +#define CONNECT_TIMEOUT 3 /* at least 2 seconds */ + +#define LEGACY_STALL_TIMER 12 /* seconds */ +#define LEGACY_READ_TIMER 15 /* seconds */ + +struct heci_cb_private { + struct list_head cb_list; + enum heci_cb_major_types major_file_operations; + void *file_private; + struct heci_message_data request_buffer; + struct heci_message_data response_buffer; + unsigned long information; + unsigned long read_time; + struct file *file_object; +}; + +/* Private file struct */ +struct heci_file_private { + struct list_head link; + struct file *file; + enum file_state state; + wait_queue_head_t tx_wait; + wait_queue_head_t rx_wait; + wait_queue_head_t wait; + spinlock_t file_lock; /*file lock */ + spinlock_t read_io_lock; /*read lock */ + spinlock_t write_io_lock; /*write lock */ + int read_pending; + int status; + /* ID of client connected */ + __u8 host_client_id; + __u8 me_client_id; + __u8 flow_ctrl_creds; + __u8 timer_count; + enum heci_file_transaction_states reading_state; + enum heci_file_transaction_states writing_state; + struct heci_cb_private *read_cb; +}; + +struct io_heci_list { + struct heci_cb_private heci_cb; + int status; + struct iamt_heci_device *device_extension; +}; + +struct heci_driver_version { + __u8 major; + __u8 minor; + __u8 hotfix; + __u16 build; +}; + + +struct heci_client { + __u32 max_msg_length; + __u8 protocol_version; +}; +/* + * HECI BUS Interface Section + */ +struct heci_msg_hdr { + __u32 me_addr:8; + __u32 host_addr:8; + __u32 length:9; + __u32 reserved:6; + __u32 msg_complete:1; +}; + + +struct hbm_cmd { + __u8 cmd:7; + __u8 is_response:1; +}; + + +struct heci_bus_message { + struct hbm_cmd cmd; + __u8 command_specific_data[]; +}; + +struct hbm_version { + __u8 minor_version; + __u8 major_version; +}; + +struct hbm_host_version_request { + struct hbm_cmd cmd; + __u8 reserved; + struct hbm_version host_version; +}; + +struct hbm_host_version_response { + struct hbm_cmd cmd; + int host_version_supported; + struct hbm_version me_max_version; +}; + +struct hbm_host_stop_request { + struct hbm_cmd cmd; + __u8 reason; + __u8 reserved[2]; +}; + +struct hbm_host_stop_response { + struct hbm_cmd cmd; + __u8 reserved[3]; +}; + +struct hbm_me_stop_request { + struct hbm_cmd cmd; + __u8 reason; + __u8 reserved[2]; +}; + +struct hbm_host_enum_request { + struct hbm_cmd cmd; + __u8 reserved[3]; +}; + +struct hbm_host_enum_response { + struct hbm_cmd cmd; + __u8 reserved[3]; + __u8 valid_addresses[32]; +}; + +struct heci_client_properties { + struct guid protocol_name; + __u8 protocol_version; + __u8 max_number_of_connections; + __u8 fixed_address; + __u8 single_recv_buf; + __u32 max_msg_length; +}; + +struct hbm_props_request { + struct hbm_cmd cmd; + __u8 address; + __u8 reserved[2]; +}; + + +struct hbm_props_response { + struct hbm_cmd cmd; + __u8 address; + __u8 status; + __u8 reserved[1]; + struct heci_client_properties client_properties; +}; + +struct hbm_client_connect_request { + struct hbm_cmd cmd; + __u8 me_addr; + __u8 host_addr; + __u8 reserved; +}; + +struct hbm_client_connect_response { + struct hbm_cmd cmd; + __u8 me_addr; + __u8 host_addr; + __u8 status; +}; + +struct hbm_client_disconnect_request { + struct hbm_cmd cmd; + __u8 me_addr; + __u8 host_addr; + __u8 reserved[1]; +}; + +struct hbm_flow_control { + struct hbm_cmd cmd; + __u8 me_addr; + __u8 host_addr; + __u8 reserved[FC_MESSAGE_RESERVED_LENGTH]; +}; + +struct heci_me_client { + struct heci_client_properties props; + __u8 client_id; + __u8 flow_ctrl_creds; +}; + +/* private device struct */ +struct iamt_heci_device { + struct pci_dev *pdev; /* pointer to pci device struct */ + /* + * lists of queues + */ + /* array of pointers to aio lists */ + struct io_heci_list *io_list_array[NUMBER_OF_LISTS]; + struct io_heci_list read_list; /* driver read queue */ + struct io_heci_list write_list; /* driver write queue */ + struct io_heci_list write_waiting_list; /* write waiting queue */ + struct io_heci_list ctrl_wr_list; /* managed write IOCTL list */ + struct io_heci_list ctrl_rd_list; /* managed read IOCTL list */ + struct io_heci_list pthi_cmd_list; /* PTHI list for cmd waiting */ + + /* driver managed PTHI list for read completed pthi cmd data */ + struct io_heci_list pthi_read_complete_list; + /* + * list of files + */ + struct list_head file_list; + /* + * memory of device + */ + unsigned int mem_base; + unsigned int mem_length; + char *mem_addr; + /* + * lock for the device + */ + spinlock_t device_lock; /* device lock*/ + spinlock_t extra_lock; /* extra lock */ + /* + * intterupts + */ + int irq; + struct work_struct work; + int recvd_msg; + + struct timer_list timer; + struct timer_list wd_timer; + /* + * hw states of host and fw(ME) + */ + __u32 host_hw_state; + __u32 me_hw_state; + /* + * waiting queue for receive message from FW + */ + wait_queue_head_t wait_recvd_msg; + wait_queue_head_t wait_stop_wd; + /* + * heci device states + */ + enum heci_states heci_state; + int stop; + /** + * virtual void GetParam(const char* UserParam); + * read write messages to/from heci fw + */ + __u32 extra_write_index; + __u32 rd_msg_buf[128]; /* used for control messages */ + __u32 wr_msg_buf[128];/* used for control messages */ + __u32 ext_msg_buf[8]; /* for control responses */ + __u32 rd_msg_hdr; + + struct hbm_version version; + + int host_buffer_is_empty; + struct heci_file_private wd_file_ext; + struct heci_me_client *me_clients; /* Note: memory has to be allocated*/ + __u8 heci_me_clients[32]; /* list of existing clients */ + __u8 num_heci_me_clients; + __u8 heci_host_clients[32]; /* list of existing clients */ + __u8 current_host_client_id; + + int wd_pending; + int wd_stoped; + __u16 wd_timeout; /* seconds ((wd_data[1] << 8) + wd_data[0]) */ + unsigned char wd_data[HECI_START_WD_DATA_SIZE]; + + + __u16 wd_due_counter; + int asf_mode; + int wd_bypass; /* if true,don't refresh watchdog ME client */ + + /* maybe this is not required */ + struct file *legacy_file_object; + struct heci_file_private legacy_file_ext; + int legacy_ioctl; + int legacy_canceled; + __u32 legacy_timer; + __u32 legacy_stall_timer; + unsigned char legacy_msg_buf[LEGACY_MTU]; + __u32 legacy_msg_buf_size; + __u32 legacy_msg_buf_index; + int legacy_flow_control_pending; + enum legacy_states legacy_state; + + struct heci_cb_private *legacy_current_cb; + __u8 write_hang; + int need_reset; + long open_handle_count; + +}; + +/** + * read_heci_register - Read a byte from the heci device + * @device: the device structure + * @offset: offset from which to read the data + * + * Return: + * the byte read. + */ +__u32 read_heci_register(struct iamt_heci_device *device, + unsigned long offset); + +/** + * write_heci_register - Write 4 bytes to the heci device + * @device: the device structure + * @offset: offset from which to write the data + * + * @value: the byte to write + */ +void write_heci_register(struct iamt_heci_device *device, unsigned long offset, + __u32 value); + +#endif /* _HECI_DATA_STRUCTURES_H_ */ diff -uprN -X a/Documentation/dontdiff a/drivers/char/heci/heci.h b/drivers/char/heci/heci.h --- a/drivers/char/heci/heci.h 1969-12-31 19:00:00.000000000 -0500 +++ b/drivers/char/heci/heci.h 2007-10-22 10:30:35.000000000 -0400 @@ -0,0 +1,158 @@ +/* + * Part of Intel(R) Manageability Engine Interface Linux driver + * + * Copyright (c) 2003 - 2007 Intel Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + * + */ + +#ifndef _HECI_H_ +#define _HECI_H_ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "heci_data_structures.h" + +#define SHUTDOWN_METHOD(method) .shutdown = method, +#define HECI_REBOOT_NOTIFIER(reboot_notifier, driver, reboot_function) +#define REGISTER_REBOOT_NOTIFIER(reboot_notifier) +#define UNREGISTER_REBOOT_NOTIFIER(reboot_notifier) +#define heci_reboot_notifier + +extern const struct guid heci_pthi_guid; +extern const struct guid heci_wd_guid; +extern const __u8 start_wd_params[]; +extern const __u8 stop_wd_params[]; + +/** + * memory IO BAR definition + */ +#define BAR_0 0 +#define BAR_1 1 +#define BAR_5 5 +/** + * Number of queue lists used by this driver + */ +#define PCI_HECI_DEVICE_ID1 0x2974 +#define PCI_HECI_DEVICE_ID2 0x2984 +#define PCI_HECI_DEVICE_ID3 0x2994 +#define PCI_HECI_DEVICE_ID4 0x29A4 +#define PCI_HECI_DEVICE_ID5 0x29B4 +#define PCI_HECI_DEVICE_ID6 0x29C4 +#define PCI_HECI_DEVICE_ID7 0x29E4 +#define PCI_HECI_DEVICE_ID8 0x29F4 + +/** + * heci init function prototypes + */ +struct iamt_heci_device *init_heci_device(struct pci_dev *pdev); +void heci_reset(struct iamt_heci_device *dev, int interrupts); +int heci_hw_init(struct iamt_heci_device *dev); +int heci_initialize_clients(void *data); +struct heci_file_private *alloc_priv(struct file *file); +int heci_disconnect_host_client(struct iamt_heci_device *dev, + struct heci_file_private *file_ext); +void heci_initialize_list(struct io_heci_list *list, + struct iamt_heci_device *dev); +void heci_flush_list(struct io_heci_list *list, + struct heci_file_private *file_ext); +void heci_flush_queues(struct iamt_heci_device *dev, + struct heci_file_private *file_ext); + +void heci_remove_client_from_file_list(struct iamt_heci_device *dev, + __u8 host_client_id); + +/** + * interrupt function prototype + */ +irqreturn_t heci_isr_interrupt(int irq, void *dev_id); +void heci_wd_timer(unsigned long data); +void heci_bh_handler(struct work_struct *work); +/** + * input output function prototype + */ +int heci_ioctl_get_version(struct iamt_heci_device *device, int if_num, + struct heci_message_data *u_msg, + struct heci_message_data k_msg, + struct heci_file_private *file_ext); + +int heci_ioctl_connect_client(struct iamt_heci_device *device, int if_num, + struct heci_message_data *u_msg, + struct heci_message_data k_msg, + struct file *file); + +int heci_ioctl_wd(struct iamt_heci_device *device, int if_num, + struct heci_message_data k_msg, + struct heci_file_private *file_ext); + +int heci_ioctl_bypass_wd(struct iamt_heci_device *device, int if_num, + struct heci_message_data k_msg, + struct heci_file_private *file_ext); + +int legacy_ioctl_send_msg(struct iamt_heci_device *device, int if_num, + struct heci_message_data k_msg, + struct file *file); + +int legacy_ioctl_recv_msg(struct iamt_heci_device *device, int if_num, + struct heci_message_data *u_msg, + struct heci_message_data k_msg, + struct file *file); + +int heci_start_read(struct iamt_heci_device *device, int if_num, + struct heci_file_private *file_ext); + +int pthi_write(struct iamt_heci_device *device, + struct heci_cb_private *priv_cb); + +int pthi_read(struct iamt_heci_device *device, int if_num, struct file *file, + char *ubuf, size_t length, loff_t *offset); + +struct heci_cb_private *find_pthi_read_list_entry( + struct iamt_heci_device *device, + struct file *file, struct heci_file_private *file_ext); + +void run_next_legacy_cmd(struct iamt_heci_device *device); + + + +#endif /* _HECI_H_ */ diff -uprN -X a/Documentation/dontdiff a/drivers/char/heci/heci_init.c b/drivers/char/heci/heci_init.c --- a/drivers/char/heci/heci_init.c 1969-12-31 19:00:00.000000000 -0500 +++ b/drivers/char/heci/heci_init.c 2007-10-22 10:30:36.000000000 -0400 @@ -0,0 +1,1089 @@ +/* + * Part of Intel(R) Manageability Engine Interface Linux driver + * + * Copyright (c) 2007 Intel Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "heci_data_structures.h" +#include "heci_interface.h" +#include "heci.h" + + +const __u8 watch_dog_data[] = { + 1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 +}; +const __u8 start_wd_params[] = { 0x02, 0x12, 0x13, 0x10 }; +const __u8 stop_wd_params[] = { 0x02, 0x02, 0x14, 0x10 }; +const struct guid heci_asf_guid = { + 0x75B30CD6, 0xA29E, 0x4AF7, + {0xA7, 0x12, 0xE6, 0x17, 0x43, 0x93, 0xC8, 0xA6} +}; +const struct guid heci_wd_guid = { + 0x05B79A6F, 0x4628, 0x4D7F, + {0x89, 0x9D, 0xA9, 0x15, 0x14, 0xCB, 0x32, 0xAB} +}; +const struct guid heci_pthi_guid = { + 0x12f80028, 0xb4b7, 0x4b2d, + {0xac, 0xa8, 0x46, 0xe0, 0xff, 0x65, 0x81, 0x4c} +}; + + +/** + * heci init function prototypes + */ +int host_start_message(struct iamt_heci_device *dev); +int host_enum_clients_message(struct iamt_heci_device *dev); +int allocate_me_clents_storage(struct iamt_heci_device *dev); +void heci_disable(struct iamt_heci_device *dev); +void host_init_wd(struct iamt_heci_device *dev); +void host_init_legacy(struct iamt_heci_device *dev); +int heci_wait_event_int_timeout(struct iamt_heci_device *dev, long timeout); + +/** + * same_id - tell if they have same id + * @fe1 -file extension + * @fe2 -file extension + * + * @return : + * 0 on success, + * negative on failure. + */ +static int same_id(struct heci_file_private *fe1, + struct heci_file_private *fe2) +{ + if ((fe1->host_client_id == fe2->host_client_id) + && (fe1->me_client_id == fe2->me_client_id)) { + return 1; + } else { + return 0; + } +} + +/** + * heci_initialize_list - Sets up a queue list. + * + * @list - An instance of our list structure + * @dev -Device object for our driver + * + * @return : + * none; + */ +void heci_initialize_list(struct io_heci_list *list, + struct iamt_heci_device *dev) +{ + /* initialize our queue list */ + INIT_LIST_HEAD(&list->heci_cb.cb_list); + list->status = ESUCCESS; + list->device_extension = dev; + return; +} + +/** + * heci_flush_queues - flush our queues list belong to file_ext. + * + * @dev -Device object for our driver + * + * @return : + * none; + */ +void heci_flush_queues(struct iamt_heci_device *dev, + struct heci_file_private *file_ext) +{ + int i; + if (!dev || !file_ext) + return; + /* flush our queue list belong to file_ext */ + for (i = 0; i < NUMBER_OF_LISTS; i++) { + DBG("remove list etnry belong to file_ext\n"); + heci_flush_list(dev->io_list_array[i], file_ext); + } + +} + + +/** + * heci_flush_list - remove list etnry belong to file_ext. + * + * @list - An instance of our list structure + * @file_ext -extension of the file object + + * @return : + * none; + */ +void heci_flush_list(struct io_heci_list *list, + struct heci_file_private *file_ext) +{ + struct heci_file_private *file_ext_tmp = NULL; + struct heci_cb_private *priv_cb_pos = NULL; + struct heci_cb_private *priv_cb_next = NULL; + + if (!list || !file_ext) + return; + if (list->status == ESUCCESS + && !list_empty(&list->heci_cb.cb_list)) { + list_for_each_entry_safe(priv_cb_pos, + priv_cb_next, &list->heci_cb.cb_list, cb_list) { + if (priv_cb_pos) + file_ext_tmp = (struct heci_file_private *) + priv_cb_pos->file_private; + + if (file_ext_tmp) { + if (same_id(file_ext, file_ext_tmp)) + list_del(&priv_cb_pos->cb_list); + } + + } + } + return; +} + +/** + * init_heci_device - allocates and initializes the heci device structure + * @pdev: The pci device structure + * + * @return : + * The heci_device_device pointer on success, NULL on failure. + */ +struct iamt_heci_device *init_heci_device(struct pci_dev *pdev) +{ + int i; + struct iamt_heci_device *device; + + device = kmalloc(sizeof(struct iamt_heci_device), GFP_KERNEL); + if (!device) + return NULL; + + /* setup our list array */ + device->io_list_array[0] = &device->read_list; + device->io_list_array[1] = &device->write_list; + device->io_list_array[2] = &device->write_waiting_list; + device->io_list_array[3] = &device->ctrl_wr_list; + device->io_list_array[4] = &device->ctrl_rd_list; + device->io_list_array[5] = &device->pthi_cmd_list; + device->io_list_array[6] = &device->pthi_read_complete_list; + INIT_LIST_HEAD(&device->file_list); + INIT_LIST_HEAD(&device->wd_file_ext.link); + INIT_LIST_HEAD(&device->legacy_file_ext.link); + spin_lock_init(&device->device_lock); + init_waitqueue_head(&device->wait_recvd_msg); + init_waitqueue_head(&device->wait_stop_wd); + device->open_handle_count = 0; + device->num_heci_me_clients = 0; + device->mem_base = 0; + device->mem_length = 0; + device->extra_write_index = 0; + device->rd_msg_hdr = 0; + device->mem_addr = NULL; + device->asf_mode = FALSE; + device->need_reset = FALSE; + device->recvd_msg = FALSE; + device->heci_state = HECI_INITIALIZING; + + device->num_heci_me_clients = 0; + device->legacy_current_cb = NULL; + device->legacy_file_object = NULL; + device->legacy_canceled = FALSE; + device->legacy_flow_control_pending = FALSE; + device->legacy_state = HECI_LEGACY_IDLE; + device->legacy_msg_buf_index = 0; + device->wd_pending = FALSE; + device->wd_stoped = FALSE; + device->wd_bypass = FALSE; + + device->me_clients = NULL; + /* init work for schedule work */ + INIT_WORK(&device->work, NULL); + for (i = 0; i < NUMBER_OF_LISTS; i++) + heci_initialize_list(device->io_list_array[i], device); + device->pdev = pdev; + return device; +} + + + + +int heci_wait_event_int_timeout(struct iamt_heci_device *dev, + long timeout) +{ + int err = 0; + err = wait_event_interruptible_timeout(dev->wait_recvd_msg, + (dev->recvd_msg), timeout); + return err; +} + +/** + * heci_hw_init - init host and fw to start work. + * + * @dev -Device object for our driver + * + *@return: + * 0 on success. + * negative on failure + */ +int heci_hw_init(struct iamt_heci_device *dev) +{ + int err = 0; + dev->host_hw_state = read_heci_register(dev, H_CSR); + dev->me_hw_state = read_heci_register(dev, ME_CSR_HA); + DBG("host_hw_state = 0x%08x, mestate = 0x%08x.\n", + dev->host_hw_state, dev->me_hw_state); + + if ((dev->host_hw_state & H_IS) == H_IS) { + /* acknowledge interrupt and stop interupts */ + write_heci_register(dev, H_CSR, dev->host_hw_state); + } + dev->recvd_msg = FALSE; + DBG("reset in start the heci device.\n"); + + heci_reset(dev, TRUE); + + DBG("host_hw_state = 0x%08x, me_hw_state = 0x%08x.\n", + dev->host_hw_state, dev->me_hw_state); + + /* wait for ME to turn on ME_RDY */ + if (!dev->recvd_msg) + err = heci_wait_event_int_timeout(dev, HECI_INTEROP_TIMEOUT); + + if (!err && !dev->recvd_msg) { + dev->heci_state = HECI_DISABLED; + DBG("wait_event_interruptible_timeout failed" \ + "on wait for ME to turn on ME_RDY.\n"); + return -ENODEV; + } else { + if (!(((dev->host_hw_state & H_RDY) == H_RDY) + && ((dev->me_hw_state & ME_RDY_HRA) == ME_RDY_HRA))) { + dev->heci_state = HECI_DISABLED; + DBG("host_hw_state = 0x%08x, me_hw_state = 0x%08x.\n", + dev->host_hw_state, + dev->me_hw_state); + + if (!(dev->host_hw_state & H_RDY) != H_RDY) + DBG("host turn off H_RDY.\n"); + if (!(dev->me_hw_state & ME_RDY_HRA) != ME_RDY_HRA) + DBG("ME turn off ME_RDY.\n"); + ERR("link layer initialization failed.\n"); + return -ENODEV; + } + } + dev->recvd_msg = FALSE; + DBG("host_hw_state = 0x%08x, me_hw_state = 0x%08x.\n", + dev->host_hw_state, dev->me_hw_state); + DBG("ME turn on ME_RDY and host turn on H_RDY.\n"); + INFO("link layer has been established.\n"); + return ESUCCESS; +} + +/** + * heci_reset - reset host and fw. + * + * @dev -Device object for our driver + * @interrupts - if interrupt should be enable after reset. + * + * @return: + * none; + */ +void heci_reset(struct iamt_heci_device *dev, int interrupts) +{ + struct heci_file_private *file_pos = NULL; + struct heci_file_private *file_next = NULL; + struct heci_cb_private *priv_cb_pos = NULL; + struct heci_cb_private *priv_cb_next = NULL; + + if (dev->heci_state == HECI_RECOVERING_FROM_RESET) { + dev->need_reset = TRUE; + return; + } + dev->host_hw_state = read_heci_register(dev, H_CSR); + + DBG("before reset host_hw_state = 0x%08x.\n", + dev->host_hw_state); + + dev->host_hw_state |= (H_RST | H_IG); + + if (interrupts) + dev->host_hw_state |= (H_IE); + else + dev->host_hw_state &= ~(H_IE); + + write_heci_register(dev, H_CSR, dev->host_hw_state); + + dev->host_hw_state = read_heci_register(dev, H_CSR); + BUG_ON((dev->host_hw_state & H_RST) != H_RST); + BUG_ON((dev->host_hw_state & H_RDY) != 0); + + dev->host_hw_state &= ~H_RST; + dev->host_hw_state |= H_IG; + + write_heci_register(dev, H_CSR, dev->host_hw_state); + + DBG("currently saved host_hw_state = 0x%08x.\n", + dev->host_hw_state); + + dev->need_reset = FALSE; + + if (dev->heci_state != HECI_INITIALIZING) { + if (dev->heci_state != HECI_DISABLED) + dev->heci_state = HECI_RESETING; + + list_for_each_entry_safe(file_pos, + file_next, &dev->file_list, link) { + file_pos->state = HECI_FILE_DISCONNECTED; + file_pos->flow_ctrl_creds = 0; + file_pos->read_cb = NULL; + file_pos->timer_count = 0; + } + /* remove entry if already in list */ + DBG("list del legacy and wd file list.\n"); + heci_remove_client_from_file_list(dev, + dev->wd_file_ext.host_client_id); + + heci_remove_client_from_file_list(dev, + dev->legacy_file_ext.host_client_id); + /* reset legacy parameters. */ + dev->legacy_current_cb = NULL; + dev->legacy_msg_buf_size = 0; + dev->legacy_msg_buf_index = 0; + dev->legacy_canceled = FALSE; + dev->legacy_file_ext.file = NULL; + dev->legacy_ioctl = FALSE; + dev->legacy_state = HECI_LEGACY_IDLE; + dev->legacy_timer = 0; + dev->wd_due_counter = 0; + dev->extra_write_index = 0; + dev->wd_pending = FALSE; + } + + dev->num_heci_me_clients = 0; + dev->rd_msg_hdr = 0; + dev->stop = FALSE; + dev->wd_pending = 0; + + /* update the state of the registers after reset */ + dev->host_hw_state = read_heci_register(dev, H_CSR); + dev->me_hw_state = read_heci_register(dev, ME_CSR_HA); + + DBG("after reset host_hw_state = 0x%08x, me_hw_state = 0x%08x.\n", + dev->host_hw_state, dev->me_hw_state); + + if (dev->heci_state != HECI_INITIALIZING && + dev->heci_state != HECI_DISABLED) + ERR("unexpected heci reset.\n"); + /* ake up all readings so they can be interrupted */ + list_for_each_entry_safe(file_pos, file_next, &dev->file_list, link) { + if (&file_pos->rx_wait && + waitqueue_active(&file_pos->rx_wait)) { + INFO("Waking up client!\n"); + wake_up_interruptible(&file_pos->rx_wait); + } + } + /* remove all waiting requests */ + if (dev->write_list.status == ESUCCESS && + !list_empty(&dev->write_list.heci_cb.cb_list)) { + list_for_each_entry_safe(priv_cb_pos, priv_cb_next, + &dev->write_list.heci_cb.cb_list, cb_list) { + if (priv_cb_pos) { + list_del(&priv_cb_pos->cb_list); + kfree(priv_cb_pos->request_buffer.data); + priv_cb_pos->request_buffer.data = NULL; + kfree(priv_cb_pos->response_buffer.data); + priv_cb_pos->response_buffer.data = NULL; + kfree(priv_cb_pos); + priv_cb_pos = NULL; + } + } + } +} + +/** + * heci_disable - reseting in disable routine. + * + * @dev -Device object for our driver + * + * @return: + * none; + */ +void heci_disable(struct iamt_heci_device *dev) +{ + if (dev->heci_state != HECI_INITIALIZING) + ERR("driver stop request heci state is disable.\n"); + dev->heci_state = HECI_DISABLED; +} + +/** + * heci_initialize_clients - routine. + * + * @dev -Device object for our driver + * + * @return: + * none; + */ +int heci_initialize_clients(void *data) +{ + int status; + struct iamt_heci_device *dev = (struct iamt_heci_device *) data; + DBG("link is established start sending messages.\n"); + /* link is established start sending messages. */ + status = host_start_message(dev); + if (status) { + DBG("start sending messages failed.\n"); + return -ENODEV; + } + /* enumerate clients */ + + status = host_enum_clients_message(dev); + if (status) { + DBG("enum clients failed.\n"); + return -ENODEV; + } + /* allocate storage for ME clients representation */ + status = allocate_me_clents_storage(dev); + if (status) { + DBG("allocate clients failed.\n"); + return -ENODEV; + } + /*heci initialization wd */ + host_init_wd(dev); + /*heci initialization legacy client */ + host_init_legacy(dev); + if (dev->need_reset) { + dev->need_reset = FALSE; + dev->heci_state = HECI_DISABLED; + return -ENODEV; + } + + memset(dev->heci_host_clients, 0, sizeof(dev->heci_host_clients)); + dev->open_handle_count = 0; + dev->heci_host_clients[0] |= 7; + dev->current_host_client_id = 3; + dev->heci_state = HECI_ENABLED; + DBG("initialization heci clients successful.\n"); + return ESUCCESS; +} + +/** + * host_start_message - heci host send start message. + * + * @dev - Device object for our driver + * + * @return : + * 0 on success, + * negative on failure. + */ +int host_start_message(struct iamt_heci_device *dev) +{ + long timeout = 60; /* 60 second */ + + struct heci_msg_hdr *heci_hdr; + struct hbm_host_version_request *host_start_req; + struct hbm_host_stop_request *host_stop_req; + int err = 0; + /* host start message */ + msleep(100); + heci_hdr = (struct heci_msg_hdr *) & dev->wr_msg_buf[0]; + heci_hdr->host_addr = 0; + heci_hdr->me_addr = 0; + heci_hdr->length = sizeof(struct hbm_host_version_request); + heci_hdr->msg_complete = 1; + heci_hdr->reserved = 0; + + host_start_req = + (struct hbm_host_version_request *) & dev->wr_msg_buf[1]; + memset(host_start_req, 0, sizeof(host_start_req)); + host_start_req->cmd.cmd = HOST_START_REQ_CMD; + host_start_req->reserved = 0; + host_start_req->host_version.major_version = HBM_MAJOR_VERSION; + host_start_req->host_version.minor_version = HBM_MINOR_VERSION; + dev->recvd_msg = FALSE; + if (!heci_write_message(dev, heci_hdr, + (unsigned char *) (host_start_req), + heci_hdr->length)) { + dev->heci_state = HECI_DISABLED; + DBG("send version to fw fail.\n"); + return -ENODEV; + } + DBG("call wait_event_interruptible_timeout for response message.\n"); + /* wait for response */ + err = heci_wait_event_int_timeout(dev, timeout * HZ); + if (!err && !dev->recvd_msg) { + dev->heci_state = HECI_DISABLED; + DBG("wait_timeout failed on host start response message.\n"); + return -ENODEV; + } + dev->recvd_msg = FALSE; + DBG("wait_timeout successful on host start response message.\n"); + if ((dev->version.major_version != HBM_MAJOR_VERSION) || + (dev->version.minor_version != HBM_MINOR_VERSION)) { + /* send stop message */ + heci_hdr->host_addr = 0; + heci_hdr->me_addr = 0; + heci_hdr->length = sizeof(struct hbm_host_stop_request); + heci_hdr->msg_complete = 1; + heci_hdr->reserved = 0; + + host_stop_req = + (struct hbm_host_stop_request *) & dev->wr_msg_buf[1]; + + memset(host_stop_req, 0, sizeof(host_stop_req)); + host_stop_req->cmd.cmd = HOST_STOP_REQ_CMD; + host_stop_req->reason = DRIVER_STOP_REQUEST; + memset(host_stop_req->reserved, 0, + sizeof(host_stop_req->reserved)); + heci_write_message(dev, heci_hdr, + (unsigned char *) (host_stop_req), + heci_hdr->length); + DBG("version mismatch.\n"); + return -ENODEV; + } + + return ESUCCESS; +} + +/** + * host_enum_clients_message - host send enumeration client request message. + * + * @dev - Device object for our driver + * + * @return : + * 0 on success, + * negative on failure. + */ +int host_enum_clients_message(struct iamt_heci_device *dev) +{ + long timeout = 5; /*5 second */ + + struct heci_msg_hdr *heci_hdr; + struct hbm_host_enum_request *host_enum_req; + int err = 0; + __u8 i, j; + heci_hdr = (struct heci_msg_hdr *) & dev->wr_msg_buf[0]; + /* enumerate clients */ + heci_hdr->host_addr = 0; + heci_hdr->me_addr = 0; + heci_hdr->length = sizeof(struct hbm_host_enum_request); + heci_hdr->msg_complete = 1; + heci_hdr->reserved = 0; + + host_enum_req = (struct hbm_host_enum_request *) &dev->wr_msg_buf[1]; + memset(host_enum_req, 0, sizeof(host_enum_req)); + host_enum_req->cmd.cmd = HOST_ENUM_REQ_CMD; + memset(host_enum_req->reserved, 0, sizeof(host_enum_req->reserved)); + if (!heci_write_message(dev, heci_hdr, + (unsigned char *) (host_enum_req), + heci_hdr->length)) { + dev->heci_state = HECI_DISABLED; + DBG("send enumeration request fail.\n"); + return -ENODEV; + } + /* wait for response */ + dev->recvd_msg = FALSE; + err = heci_wait_event_int_timeout(dev, timeout * HZ); + if (!err && !dev->recvd_msg) { + dev->heci_state = HECI_DISABLED; + DBG("wait_event_interruptible_timeout failed " + "on enumeration cients response message.\n"); + return -ENODEV; + } + dev->recvd_msg = FALSE; + /* count how many ME clients we have */ + for (i = 0; i < sizeof(dev->heci_me_clients); i++) + for (j = 0; j < 8; j++) + if ((dev->heci_me_clients[i] & (1 << j)) != 0) + dev->num_heci_me_clients++; + return ESUCCESS; +} + +/** + * allocate_me_clents_storage - allocate storage for me clients + * + * @dev - Device object for our driver + * + * @return : + * 0 on success, + * negative on failure. + */ +int allocate_me_clents_storage(struct iamt_heci_device *dev) +{ + long timeout = 10; /*10 second */ + struct heci_msg_hdr *heci_hdr; + struct hbm_props_request *host_cli_req; + __u8 num, i, j; + int err; + heci_hdr = (struct heci_msg_hdr *) & dev->wr_msg_buf[0]; + /* allocate storage for ME clients representation */ + + if (dev->num_heci_me_clients <= 0) + return ESUCCESS; + + kfree(dev->me_clients); + dev->me_clients = kcalloc(dev->num_heci_me_clients, + sizeof(struct heci_me_client), GFP_KERNEL); + if (!dev->me_clients) { + dev->heci_state = HECI_DISABLED; + DBG("allocate me clents memory failed.\n"); + return -ENOMEM; + } + + num = 0; + + for (i = 0; i < sizeof(dev->heci_me_clients); i++) { + for (j = 0; j < 8; j++) { + if ((dev->heci_me_clients[i] & (1 << j)) != 0) { + struct heci_me_client *client; + client = &dev->me_clients[num]; + + client->client_id = (i * 8) + j; + client->flow_ctrl_creds = 0; + heci_hdr->host_addr = 0; + heci_hdr->me_addr = 0; + heci_hdr->length = + sizeof(struct hbm_props_request); + heci_hdr->msg_complete = 1; + heci_hdr->reserved = 0; + + host_cli_req = + (struct hbm_props_request *) + & dev->wr_msg_buf[1]; + + memset(host_cli_req, 0, + sizeof(struct hbm_props_request)); + host_cli_req->cmd.cmd = + HOST_CLIENT_PROPERTEIS_REQ_CMD; + host_cli_req->address = client->client_id; + + memset(host_cli_req->reserved, 0, + sizeof(host_cli_req->reserved)); + if (!heci_write_message(dev, + heci_hdr, + (unsigned char *) (host_cli_req), + heci_hdr->length)) { + DBG("send props request fail.\n"); + dev->heci_state = HECI_DISABLED; + kfree(dev->me_clients); + return -ENODEV; + } + /* wait for response */ + dev->recvd_msg = FALSE; + err = heci_wait_event_int_timeout(dev, + timeout * HZ); + if (!err && !dev->recvd_msg) { + DBG("wait failed on props resp msg\n"); + dev->heci_state = HECI_DISABLED; + kfree(dev->me_clients); + return -ENODEV; + } + dev->recvd_msg = FALSE; + num++; + } + } + } + + return ESUCCESS; +} + +/** + * host_init_wd - heci initialization wd. + * + * @dev - Device object for our driver + * + * @return : + * none; + */ +void host_init_wd(struct iamt_heci_device *dev) +{ + long timeout = 15; /*15 second */ + __u8 i; + int err = 0; + /* look for WD client and connect to it */ + spin_lock_init(&dev->wd_file_ext.file_lock); + init_waitqueue_head(&dev->wd_file_ext.wait); + dev->wd_file_ext.file = NULL; + dev->wd_file_ext.state = HECI_FILE_DISCONNECTED; + dev->wd_timeout = 0; + dev->asf_mode = FALSE; + /* find ME ASF client - otherwise assume AMT mode */ + DBG("find ME ASF client - otherwise assume AMT mode.\n"); + for (i = 0; i < dev->num_heci_me_clients; i++) { + if (memcmp(&heci_asf_guid, + &dev->me_clients[i].props.protocol_name, + sizeof(struct guid)) == 0) { + dev->asf_mode = TRUE; + DBG("found ME ASF client.\n"); + } + } + if (dev->asf_mode) { + memcpy(dev->wd_data, stop_wd_params, HECI_WD_PARAMS_SIZE); + + } else { /* AMT mode */ + + DBG("assume AMT mode.\n"); + dev->wd_timeout = AMT_WD_VALUE; + DBG("dev->wd_timeout=%d.\n", dev->wd_timeout); + memcpy(dev->wd_data, start_wd_params, HECI_WD_PARAMS_SIZE); + memcpy(dev->wd_data + HECI_WD_PARAMS_SIZE, + &dev->wd_timeout, sizeof(__u16)); + } + + /* find ME WD client */ + for (i = 0; i < dev->num_heci_me_clients; i++) { + if (0 == memcmp(&heci_wd_guid, + &dev->me_clients[i].props.protocol_name, + sizeof(struct guid))) { + + spin_lock_bh(&dev->device_lock); + dev->wd_file_ext.me_client_id = + dev->me_clients[i].client_id; + dev->wd_file_ext.state = + HECI_FILE_CONNECTING; + dev->wd_file_ext.host_client_id = + HECI_WD_HOST_CLIENT_ID; + + dev->wd_file_ext.flow_ctrl_creds = 0; + dev->wd_file_ext.timer_count = 0; + list_add_tail(&dev->wd_file_ext.link, &dev->file_list); + spin_unlock_bh(&dev->device_lock); + break; + } + } + DBG("check wd_file_ext\n"); + if (HECI_FILE_CONNECTING == dev->wd_file_ext.state) { + if (heci_connect(dev, &dev->wd_file_ext)) { + err = wait_event_timeout(dev->wait_recvd_msg, + (HECI_FILE_CONNECTED == dev->wd_file_ext.state || + HECI_FILE_DISCONNECTED == dev->wd_file_ext.state), + timeout * HZ); + if (HECI_FILE_CONNECTED == dev->wd_file_ext.state) { + DBG("dev->wd_timeout=%d.\n", dev->wd_timeout); + if (dev->wd_timeout != 0) + dev->wd_due_counter = 1; + else + dev->wd_due_counter = 0; + DBG("successfully to connect to WD client.\n"); + } else { + heci_remove_client_from_file_list(dev, + dev->wd_file_ext.host_client_id); + if (HECI_FILE_CONNECTED != + dev->wd_file_ext.state) + DBG("wrong status for WD client.\n"); + if (!err) + DBG("failed connect err=%08x\n", err); + DBG("failed to connect to WD client.\n"); + dev->wd_file_ext.state = + HECI_FILE_DISCONNECTED; + } + } else { + DBG("failed to call heci_connect for wd_file_ext.\n"); + heci_remove_client_from_file_list(dev, + dev->wd_file_ext.host_client_id); + dev->wd_file_ext.state = + HECI_FILE_DISCONNECTED; + } + } else { + DBG("failed to find WD client.\n"); + } + + dev->wd_timer.function = &heci_wd_timer; + dev->wd_timer.data = (unsigned long) dev; + return; +} + + +/** + * host_init_legacy - heci initialization legacy client. + * + * @dev - Device object for our driver + * + * @return : + * none; + */ +void host_init_legacy(struct iamt_heci_device *dev) +{ + long timeout = 15; /*15 second */ + __u8 i; + int err; + + + spin_lock_init(&dev->legacy_file_ext.file_lock); + init_waitqueue_head(&dev->legacy_file_ext.wait); + spin_lock_init(&dev->legacy_file_ext.read_io_lock); + spin_lock_init(&dev->legacy_file_ext. + write_io_lock); + init_waitqueue_head(&dev->legacy_file_ext.rx_wait); + init_waitqueue_head(&dev->legacy_file_ext.tx_wait); + dev->legacy_file_ext.reading_state = HECI_IDLE; + dev->legacy_file_ext.writing_state = HECI_IDLE; + dev->legacy_file_ext.read_pending = FALSE; + dev->legacy_file_ext.flow_ctrl_creds = 0; + dev->legacy_file_ext.read_cb = NULL; + /* look for legacy client and connect to it */ + dev->legacy_file_ext.file = NULL; + dev->legacy_file_ext.state = + HECI_FILE_DISCONNECTED; + + /* find ME PTHI client */ + for (i = 0; i < dev->num_heci_me_clients; i++) { + if (0 == memcmp(&heci_pthi_guid, + &dev->me_clients[i].props.protocol_name, + sizeof(struct guid))) { + spin_lock_bh(&dev->device_lock); + dev->legacy_file_ext.me_client_id = + dev->me_clients[i].client_id; + dev->legacy_file_ext.state = + HECI_FILE_CONNECTING; + dev->legacy_file_ext.host_client_id = + HECI_LEGACY_HOST_CLIENT_ID; + dev->legacy_file_ext.flow_ctrl_creds = 0; + dev->legacy_file_ext.timer_count = 0; + list_add_tail(&dev->legacy_file_ext.link, + &dev->file_list); + spin_unlock_bh(&dev->device_lock); + break; + } + } + if (dev->asf_mode) { + dev->legacy_file_ext.state = + HECI_FILE_DISCONNECTED; + heci_remove_client_from_file_list(dev, + dev->legacy_file_ext.host_client_id); + return; + + } + if (dev->legacy_file_ext.state == HECI_FILE_CONNECTING) { + BUG_ON(dev->me_clients[i].props.max_msg_length != LEGACY_MTU); + + + if (dev->me_clients[i].props.max_msg_length < LEGACY_MTU) { + dev->legacy_file_ext.state = HECI_FILE_DISCONNECTED; + DBG("legacy client buffer too small.\n"); + } else { + if (heci_connect(dev, &dev->legacy_file_ext)) { + err = wait_event_timeout(dev->wait_recvd_msg, + (dev->legacy_file_ext.state == + HECI_FILE_CONNECTED || + dev->legacy_file_ext.state == + HECI_FILE_DISCONNECTED), + timeout * HZ); + if ((dev->legacy_file_ext.state != + HECI_FILE_CONNECTED)) { + heci_remove_client_from_file_list(dev, + dev->legacy_file_ext.host_client_id); + DBG("failed connect to legacy.\n"); + dev->legacy_file_ext.state = + HECI_FILE_DISCONNECTED; + } else { + DBG("OK to connect legacy client.\n"); + dev->legacy_state = HECI_LEGACY_IDLE; + } + } else { + DBG("failed to heci_connect for legacy.\n"); + heci_remove_client_from_file_list(dev, + dev->legacy_file_ext.host_client_id); + dev->legacy_file_ext. state = + HECI_FILE_DISCONNECTED; + } + } + } else { + if (!dev->asf_mode) + DBG("failed to find legacy client.\n"); + } + return; +} + +/** + * alloc_priv - allocates a private file structure and set it up. + * @file: the file structure + * + * @return : + * The allocated file or NULL on failure + */ +struct heci_file_private *alloc_priv(struct file *file) +{ + struct heci_file_private *priv; + + priv = kmalloc(sizeof(struct heci_file_private), GFP_KERNEL); + if (!priv) + return NULL; + + spin_lock_init(&priv->file_lock); + spin_lock_init(&priv->read_io_lock); + spin_lock_init(&priv->write_io_lock); + init_waitqueue_head(&priv->wait); + init_waitqueue_head(&priv->rx_wait); + DBG("priv->rx_wait =%p\n", &priv->rx_wait); + init_waitqueue_head(&priv->tx_wait); + INIT_LIST_HEAD(&priv->link); + priv->reading_state = HECI_IDLE; + priv->writing_state = HECI_IDLE; + priv->file = file; + priv->flow_ctrl_creds = 0; + priv->timer_count = 0; + priv->me_client_id = 0; + priv->read_cb = NULL; + priv->status = ESUCCESS; + priv->read_pending = FALSE; + return priv; +} + + + +/** + * heci_disconnect_host_client - send disconnect message to fw from host client. + * + * @dev -Device object for our driver + * @file_ext -extension of the file object + * + * @return : + * 0 on success, + * negative on failure. + */ +int heci_disconnect_host_client(struct iamt_heci_device *dev, + struct heci_file_private *file_ext) +{ + int rets = ESUCCESS, err = 0; + long timeout = 15; /*15 second */ + + struct heci_cb_private *priv_cb = NULL; + + struct heci_file_private *file_temp = NULL; + + struct heci_cb_private *priv_cb_pos = NULL; + struct heci_cb_private *priv_cb_next = NULL; + + if ((!dev) || (!file_ext)) + return -ENODEV; + priv_cb = kmalloc(sizeof(struct heci_cb_private), GFP_KERNEL); + if (!priv_cb) + return -ENOMEM; + if (file_ext->state == HECI_FILE_DISCONNECTING) { + INIT_LIST_HEAD(&priv_cb->cb_list); + priv_cb->file_private = file_ext; + priv_cb->major_file_operations = HECI_CLOSE; + spin_lock_bh(&dev->device_lock); + if (dev->host_buffer_is_empty) { + dev->host_buffer_is_empty = FALSE; + if (heci_disconnect(dev, file_ext)) { + list_add_tail(&priv_cb->cb_list, + &dev->ctrl_rd_list.heci_cb.cb_list); + } else { + spin_unlock_bh(&dev->device_lock); + rets = -ENODEV; + DBG("failed to call heci_disconnect.\n"); + goto free; + } + } else { + priv_cb->file_private = file_ext; + DBG("add disconnect cb to control write list\n"); + list_add_tail(&priv_cb->cb_list, + &dev->ctrl_wr_list.heci_cb.cb_list); + } + spin_unlock_bh(&dev->device_lock); + + err = wait_event_timeout(dev->wait_recvd_msg, + (HECI_FILE_DISCONNECTED == file_ext->state), + timeout * HZ); + if (HECI_FILE_DISCONNECTED == file_ext->state) { + rets = ESUCCESS; + DBG("successfully to disconnect from fw client.\n"); + } else { + rets = -ENODEV; + if (HECI_FILE_DISCONNECTED != file_ext->state) + DBG("wrong status client disconnect.\n"); + if (!err) + DBG("wait failed disconnect err=%08x\n", err); + DBG("failed to diconnect to fw client.\n"); + } + + } + + if (priv_cb) { + spin_lock_bh(&dev->device_lock); + if (dev->ctrl_rd_list.status == ESUCCESS && + !list_empty(&dev->ctrl_rd_list.heci_cb.cb_list)) { + list_for_each_entry_safe(priv_cb_pos, priv_cb_next, + &dev->ctrl_rd_list.heci_cb.cb_list, cb_list) { + file_temp = (struct heci_file_private *) + priv_cb_pos->file_private; + if (file_temp) { + if (same_id(file_ext, file_temp)) + list_del(&priv_cb_pos->cb_list); + } + } + } + spin_unlock_bh(&dev->device_lock); +free: + kfree(priv_cb); + priv_cb = NULL; + } + return rets; +} + + +/** + * heci_remove_client_from_file_list - + * remove file extension from device file list + * + * @dev -Device object for our driver + * @host_client_id -host client id to be removed + * + * @return : + * none; + */ +void heci_remove_client_from_file_list(struct iamt_heci_device *dev, + __u8 host_client_id) +{ + struct heci_file_private *file_pos = NULL; + struct heci_file_private *file_next = NULL; + list_for_each_entry_safe(file_pos, file_next, &dev->file_list, link) { + if (host_client_id == file_pos->host_client_id) { + DBG("remove host client = %d, ME client = %d\n", + file_pos->host_client_id, + file_pos->me_client_id); + list_del(&file_pos->link); + break; + } + } +} diff -uprN -X a/Documentation/dontdiff a/drivers/char/heci/heci_interface.c b/drivers/char/heci/heci_interface.c --- a/drivers/char/heci/heci_interface.c 1969-12-31 19:00:00.000000000 -0500 +++ b/drivers/char/heci/heci_interface.c 2007-10-22 10:30:36.000000000 -0400 @@ -0,0 +1,497 @@ +/* + * Part of Intel(R) Manageability Engine Interface Linux driver + * + * Copyright (c) 2003 - 2007 Intel Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + * + */ + + +#include "heci.h" +#include "heci_interface.h" + + + +static const __u8 interface_start_wd_params[] = { 0x02, 0x12, 0x13, 0x10}; +static const __u8 interface_stop_wd_params[] = { 0x02, 0x02, 0x14, 0x10}; + +/** + * read_heci_register - Read a byte from the heci device + * @device: the device structure + * @offset: offset from which to read the data + * + * Return: + * the byte read. + */ +__u32 read_heci_register(struct iamt_heci_device *device, + unsigned long offset) +{ + return readl(device->mem_addr + offset); +} + +/** + * write_heci_register - Write 4 bytes to the heci device + * @device: the device structure + * @offset: offset from which to write the data + * + * @value: the byte to write + */ +void write_heci_register(struct iamt_heci_device *device, unsigned long offset, + __u32 value) +{ + writel(value, device->mem_addr + offset); +} + +/** + * host_buffer_is_empty - check if host buffer is empty. + * + * @dev -Device object for our driver + * + * @return : + * TRUE if empty + * FALSE - otherwise. + */ +int host_buffer_is_empty(struct iamt_heci_device *dev) +{ + char read_ptr, write_ptr; + unsigned char buffer_depth, filled_slots, empty_slots; + + dev->host_hw_state = read_heci_register(dev, H_CSR); + read_ptr = (char) ((dev->host_hw_state & H_CBRP) >> 8); + write_ptr = (char) ((dev->host_hw_state & H_CBWP) >> 16); + buffer_depth = (unsigned char) ((dev->host_hw_state & H_CBD) >> 24); + filled_slots = (unsigned char) (write_ptr - read_ptr); + empty_slots = buffer_depth - filled_slots; + + if (filled_slots > 0) + return FALSE; + return TRUE; +} + +/** + * count_empty_write_slots - count write empty slots. + * + * @dev - Device object for our driver + * + * + * @return : + * -1(ESLOTS_OVERFLOW) if overflow + * otherwise filed slots count + */ +__s32 count_empty_write_slots(struct iamt_heci_device *dev) +{ + char read_ptr, write_ptr; + unsigned char buffer_depth, filled_slots, empty_slots; + + read_ptr = (char) ((dev->host_hw_state & H_CBRP) >> 8); + write_ptr = (char) ((dev->host_hw_state & H_CBWP) >> 16); + buffer_depth = (unsigned char) ((dev->host_hw_state & H_CBD) >> 24); + filled_slots = (unsigned char) (write_ptr - read_ptr); + empty_slots = buffer_depth - filled_slots; + + if (filled_slots > buffer_depth) + /* overfolw */ + return -ESLOTS_OVERFLOW; + + return (__s32) empty_slots; +} + +/** + * heci_write_message - write a message to heci device. + * + * @heci_hdr - header of message + * @write_buffer - message buffer will be write + * @write_length - message size will be write + * + * @return : + * TRUE if success + * FALSE - otherwise. + */ +int heci_write_message(struct iamt_heci_device *dev, + struct heci_msg_hdr *header, + unsigned char *write_buffer, + unsigned long write_length) +{ + __u32 temp_msg = 0; + unsigned long bytes_written = 0; + char read_ptr, write_ptr; + unsigned char buffer_depth, filled_slots, empty_slots; + unsigned long dw_to_write; + dw_to_write = ((write_length + 3) / 4); + DBG("host_hw_state = 0x%08x.\n", dev->host_hw_state); + DBG("heci_write_message header=%08x.\n", *((__u32 *) header)); + + read_ptr = (char) ((dev->host_hw_state & H_CBRP) >> 8); + write_ptr = (char) ((dev->host_hw_state & H_CBWP) >> 16); + buffer_depth = (unsigned char) ((dev->host_hw_state & H_CBD) >> 24); + filled_slots = (unsigned char) (write_ptr - read_ptr); + empty_slots = buffer_depth - filled_slots; + DBG("filled = %hu, empty = %hu.\n", filled_slots, empty_slots); + + if (dw_to_write > empty_slots) + return FALSE; + + + write_heci_register(dev, H_CB_WW, *((__u32 *) header)); + + while (write_length >= 4) { + write_heci_register(dev, H_CB_WW, + *(__u32 *) (write_buffer + bytes_written)); + bytes_written += 4; + write_length -= 4; + } + + if (write_length > 0) { + memcpy(&temp_msg, &write_buffer[bytes_written], write_length); + write_heci_register(dev, H_CB_WW, temp_msg); + } + + dev->host_hw_state |= H_IG; + write_heci_register(dev, H_CSR, dev->host_hw_state); + dev->me_hw_state = read_heci_register(dev, ME_CSR_HA); + if ((dev->me_hw_state & ME_RDY_HRA) != ME_RDY_HRA) + return FALSE; + + dev->write_hang = 0; + return TRUE; +} + +/** + * count_full_read_slots - reset host and fw. + * + * @dev -Device object for our driver + * + * + * @return : + * -1(ESLOTS_OVERFLOW) if overflow + * otherwise filed slots count + */ +__s32 count_full_read_slots(struct iamt_heci_device *dev) +{ + + char read_ptr, write_ptr; + unsigned char buffer_depth, filled_slots, empty_slots; + + dev->me_hw_state = read_heci_register(dev, ME_CSR_HA); + read_ptr = (char) ((dev->me_hw_state & ME_CBRP_HRA) >> 8); + write_ptr = (char) ((dev->me_hw_state & ME_CBWP_HRA) >> 16); + buffer_depth = (unsigned char)((dev->me_hw_state & ME_CBD_HRA) >> 24); + filled_slots = (unsigned char) (write_ptr - read_ptr); + empty_slots = buffer_depth - filled_slots; + + if (filled_slots > buffer_depth) + /* overflow */ + return -ESLOTS_OVERFLOW; + + DBG("filled_slots =%08x \n", filled_slots); + return (__s32) filled_slots; +} + +/** + * heci_read_slots - read a message from heci device. + * + * @dev - device object for our driver + * @buffer - message buffer will be write + * @buffer_length - message size will be read + * + * @return : + * none; + */ +void heci_read_slots(struct iamt_heci_device *dev, + unsigned char *buffer, unsigned long buffer_length) +{ + __u32 i = 0; + unsigned char temp_buf[sizeof(__u32)]; + + while (buffer_length >= sizeof(__u32)) { + ((__u32 *) buffer)[i] = read_heci_register(dev, ME_CB_RW); + DBG("buffer[%d]= %d\n", i, ((__u32 *) buffer)[i]); + i++; + buffer_length -= sizeof(__u32); + } + + if (buffer_length > 0) { + *((__u32 *) & temp_buf) = read_heci_register(dev, ME_CB_RW); + memcpy(&buffer[i * 4], temp_buf, buffer_length); + } + + dev->host_hw_state |= H_IG; + write_heci_register(dev, H_CSR, dev->host_hw_state); + return; +} + +/** + * flow_ctrl_creds - check flow_control credentials. + * + * @dev -Device object for our driver + * @file_ext -extension of the file object + * + * @return : + * TRUE if flow_ctrl_creds >0 + * FALSE - otherwise. + */ +int flow_ctrl_creds(struct iamt_heci_device *dev, + struct heci_file_private *file_ext) +{ + __u8 i; + + if (!dev->num_heci_me_clients) + return FALSE; + if (file_ext == NULL) + return FALSE; + if (file_ext->flow_ctrl_creds > 0) + return TRUE; + + for (i = 0; i < dev->num_heci_me_clients; i++) { + if (dev->me_clients[i].client_id == file_ext->me_client_id) { + if (dev->me_clients[i].flow_ctrl_creds > 0) { + BUG_ON(dev->me_clients[i]. + props.single_recv_buf == 0); + return TRUE; + } + return FALSE; + } + } + BUG_ON(1); + return FALSE; +} + +/** + * flow_ctrl_reduce - reduce flow_control . + * + * @dev -Device object for our driver + * @file_ext -extension of the file object + * + * @return : + * none; + */ +void flow_ctrl_reduce(struct iamt_heci_device *dev, + struct heci_file_private *file_ext) +{ + __u8 i; + + if (!dev->num_heci_me_clients) + return; + + for (i = 0; i < dev->num_heci_me_clients; i++) { + if (dev->me_clients[i].client_id == file_ext->me_client_id) { + if (dev->me_clients[i].props.single_recv_buf != 0) { + BUG_ON(dev->me_clients[i].flow_ctrl_creds <= 0); + dev->me_clients[i].flow_ctrl_creds--; + } else { + BUG_ON(file_ext->flow_ctrl_creds <= 0); + file_ext->flow_ctrl_creds--; + } + return; + } + } + BUG_ON(1); +} + +/** + * heci_send_flow_control - send flow control to fw. + * + * @dev -Device object for our driver + * @file_ext -extension of the file object + * + * @return : + * TRUE if success + * FALSE - otherwise. + */ +int heci_send_flow_control(struct iamt_heci_device *dev, + struct heci_file_private *file_ext) +{ + struct heci_msg_hdr *heci_hdr; + struct hbm_flow_control *heci_flow_control; + + heci_hdr = (struct heci_msg_hdr *) & dev->wr_msg_buf[0]; + heci_hdr->host_addr = 0; + heci_hdr->me_addr = 0; + heci_hdr->length = sizeof(struct hbm_flow_control); + heci_hdr->msg_complete = 1; + heci_hdr->reserved = 0; + + heci_flow_control = (struct hbm_flow_control *) & dev->wr_msg_buf[1]; + memset(heci_flow_control, 0, sizeof(heci_flow_control)); + heci_flow_control->host_addr = file_ext->host_client_id; + heci_flow_control->me_addr = file_ext->me_client_id; + heci_flow_control->cmd.cmd = FLOW_CONTROL_CMD; + memset(heci_flow_control->reserved, 0, + sizeof(heci_flow_control->reserved)); + DBG("sending flow control host client = %d, me client = %d\n", + file_ext->host_client_id, file_ext->me_client_id); + if (!heci_write_message(dev, heci_hdr, + (unsigned char *) heci_flow_control, + sizeof(struct hbm_flow_control))) + return FALSE; + return TRUE; + +} + +/** + * other_client_is_connecting - check if other + * client with the same client id is connected. + * + * @dev -Device object for our driver + * @file_ext -extension of the file object + * + * @return : + * TRUE if other client is connected. + * FALSE - otherwise. + */ +int other_client_is_connecting(struct iamt_heci_device *dev, + struct heci_file_private *file_ext) +{ + + struct heci_file_private *file_pos = NULL; + struct heci_file_private *file_next = NULL; + list_for_each_entry_safe(file_pos, file_next, &dev->file_list, link) { + if ((file_pos->state == HECI_FILE_CONNECTING) + && (file_pos != file_ext) + && file_ext->me_client_id == file_pos->me_client_id) + return TRUE; + } + return FALSE; +} + +/** + * heci_send_wd - send watch dog message to fw. + * + * @dev -Device object for our driver + * + * @return : + * TRUE if success + * FALSE - otherwise. + */ +int heci_send_wd(struct iamt_heci_device *dev) +{ + struct heci_msg_hdr *heci_hdr; + + heci_hdr = (struct heci_msg_hdr *) & dev->wr_msg_buf[0]; + heci_hdr->host_addr = dev->wd_file_ext.host_client_id; + heci_hdr->me_addr = dev->wd_file_ext.me_client_id; + heci_hdr->msg_complete = 1; + heci_hdr->reserved = 0; + + if (!memcmp(dev->wd_data, interface_start_wd_params, + HECI_WD_PARAMS_SIZE)) { + heci_hdr->length = HECI_START_WD_DATA_SIZE; + } else { + BUG_ON(memcmp(dev->wd_data, interface_stop_wd_params, + HECI_WD_PARAMS_SIZE)); + heci_hdr->length = HECI_WD_PARAMS_SIZE; + } + + if (!heci_write_message(dev, heci_hdr, dev->wd_data, heci_hdr->length)) + return FALSE; + return TRUE; +} + + +/** + * heci_disconnect - send disconnect message to fw. + * + * @dev -Device object for our driver + * @file_ext -extension of the file object + * + * @return : + * TRUE if success + * FALSE - otherwise. + */ +int heci_disconnect(struct iamt_heci_device *dev, + struct heci_file_private *file_ext) +{ + struct heci_msg_hdr *heci_hdr; + struct hbm_client_disconnect_request *heci_cli_disconnect; + + heci_hdr = (struct heci_msg_hdr *) &dev->wr_msg_buf[0]; + heci_hdr->host_addr = 0; + heci_hdr->me_addr = 0; + heci_hdr->length = sizeof(struct hbm_client_disconnect_request); + heci_hdr->msg_complete = 1; + heci_hdr->reserved = 0; + + heci_cli_disconnect = + (struct hbm_client_disconnect_request *) & dev->wr_msg_buf[1]; + memset(heci_cli_disconnect, 0, sizeof(heci_cli_disconnect)); + heci_cli_disconnect->host_addr = file_ext->host_client_id; + heci_cli_disconnect->me_addr = file_ext->me_client_id; + heci_cli_disconnect->cmd.cmd = CLIENT_DISCONNECT_REQ_CMD; + heci_cli_disconnect->reserved[0] = 0; + + if (TRUE != heci_write_message(dev, heci_hdr, + (unsigned char *) heci_cli_disconnect, + sizeof(struct hbm_client_disconnect_request))) + return FALSE; + return TRUE; +} + +/** + * heci_connect - send connect message to fw. + * + * @dev -Device object for our driver + * @file_ext -extension of the file object + * + * @return : + * TRUE if success + * FALSE - otherwise. + */ +int heci_connect(struct iamt_heci_device *dev, + struct heci_file_private *file_ext) +{ + struct heci_msg_hdr *heci_hdr; + struct hbm_client_connect_request *heci_cli_connect; + + heci_hdr = (struct heci_msg_hdr *) & dev->wr_msg_buf[0]; + heci_hdr->host_addr = 0; + heci_hdr->me_addr = 0; + heci_hdr->length = sizeof(struct hbm_client_connect_request); + heci_hdr->msg_complete = 1; + heci_hdr->reserved = 0; + + heci_cli_connect = + (struct hbm_client_connect_request *) & dev->wr_msg_buf[1]; + heci_cli_connect->host_addr = file_ext->host_client_id; + heci_cli_connect->me_addr = file_ext->me_client_id; + heci_cli_connect->cmd.cmd = CLIENT_CONNECT_REQ_CMD; + heci_cli_connect->reserved = 0; + + if (TRUE != heci_write_message(dev, heci_hdr, + (unsigned char *) heci_cli_connect, + sizeof(struct hbm_client_connect_request))) + return FALSE; + + return TRUE; +} diff -uprN -X a/Documentation/dontdiff a/drivers/char/heci/heci_interface.h b/drivers/char/heci/heci_interface.h --- a/drivers/char/heci/heci_interface.h 1969-12-31 19:00:00.000000000 -0500 +++ b/drivers/char/heci/heci_interface.h 2007-10-22 10:30:36.000000000 -0400 @@ -0,0 +1,179 @@ +/* + * Part of Intel(R) Manageability Engine Interface Linux driver + * + * Copyright (c) 2003 - 2007 Intel Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + * + */ + + +#ifndef _HECI_INTERFACE_H_ +#define _HECI_INTERFACE_H_ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "heci_data_structures.h" + + +#define HBM_MINOR_VERSION 0 +#define HBM_MAJOR_VERSION 1 +#define HBM_TIMEOUT 1 /* 1 second */ + + +#define HOST_START_REQ_CMD 0x01 +#define HOST_START_RES_CMD 0x81 + +#define HOST_STOP_REQ_CMD 0x02 +#define HOST_STOP_RES_CMD 0x82 + +#define ME_STOP_REQ_CMD 0x03 + +#define HOST_ENUM_REQ_CMD 0x04 +#define HOST_ENUM_RES_CMD 0x84 + +#define HOST_CLIENT_PROPERTEIS_REQ_CMD 0x05 +#define HOST_CLIENT_PROPERTEIS_RES_CMD 0x85 + +#define CLIENT_CONNECT_REQ_CMD 0x06 +#define CLIENT_CONNECT_RES_CMD 0x86 + +#define CLIENT_DISCONNECT_REQ_CMD 0x07 +#define CLIENT_DISCONNECT_RES_CMD 0x87 + +#define FLOW_CONTROL_CMD 0x08 + + +#define AMT_WD_VALUE 120 /* seconds */ + +#define HECI_WATCHDOG_DATA_SIZE 16 +#define HECI_START_WD_DATA_SIZE 20 +#define HECI_WD_PARAMS_SIZE 4 + +/* IOCTL commands */ +#define HECI_IOCTL_LETTER 'H' + + +#define IOCTL_HECI_GET_VERSION \ + _IOWR(HECI_IOCTL_LETTER , 0x800, struct heci_message_data) +#define IOCTL_HECI_CONNECT_CLIENT \ + _IOWR(HECI_IOCTL_LETTER , 0x801, struct heci_message_data) +#define IOCTL_HECI_WD \ + _IOWR(HECI_IOCTL_LETTER , 0x802, struct heci_message_data) +#define IOCTL_HECI_BYPASS_WD \ + _IOWR(HECI_IOCTL_LETTER , 0x810, struct heci_message_data) + +#define IAMT_IOC_MAGIC 'i' +#define IAMT_KCS_SEND_MESSAGE_COMMAND \ + _IOR(IAMT_IOC_MAGIC, 1, struct heci_message_data) +#define IAMT_KCS_RECEIVE_MESSAGE_COMMAND \ + _IOW(IAMT_IOC_MAGIC, 2, struct heci_message_data) + + +#pragma pack(1) + + +enum heci_stop_reason_types{ + DRIVER_STOP_REQUEST = 0x00, + DEVICE_D1_ENTRY = 0x01, + DEVICE_D2_ENTRY = 0x02, + DEVICE_D3_ENTRY = 0x03, + SYSTEM_S1_ENTRY = 0x04, + SYSTEM_S2_ENTRY = 0x05, + SYSTEM_S3_ENTRY = 0x06, + SYSTEM_S4_ENTRY = 0x07, + SYSTEM_S5_ENTRY = 0x08 +}; + +enum me_stop_reason_types{ + FW_UPDATE = 0x00 +}; + +enum client_connect_status_types{ + CCS_SUCCESS = 0x00, + CCS_NOT_FOUND = 0x01, + CCS_ALREADY_STARTED = 0x02, + CCS_OUT_OF_RESOURCES = 0x03, + CCS_MESSAGE_SMALL = 0x04 +}; + +enum client_disconnect_status_types{ + CDS_SUCCESS = 0x00 +}; + + +/** + * heci interface function prototypes + */ +void heci_read_slots(struct iamt_heci_device *dev, + unsigned char *buffer, unsigned long buffer_length); + +int heci_write_message(struct iamt_heci_device *dev, + struct heci_msg_hdr *header, + unsigned char *write_buffer, + unsigned long write_length); + +int host_buffer_is_empty(struct iamt_heci_device *dev); + +__s32 count_full_read_slots(struct iamt_heci_device *dev); + +__s32 count_empty_write_slots(struct iamt_heci_device *dev); + +int flow_ctrl_creds(struct iamt_heci_device *dev, + struct heci_file_private *file_ext); + +int heci_send_wd(struct iamt_heci_device *dev); + +void flow_ctrl_reduce(struct iamt_heci_device *dev, + struct heci_file_private *file_ext); + +int heci_send_flow_control(struct iamt_heci_device *dev, + struct heci_file_private *file_ext); + +int heci_disconnect(struct iamt_heci_device *dev, + struct heci_file_private *file_ext); +int other_client_is_connecting(struct iamt_heci_device *dev, + struct heci_file_private *file_ext); +int heci_connect(struct iamt_heci_device *dev, + struct heci_file_private *file_ext); + +#endif /* _HECI_INTERFACE_H_ */ diff -uprN -X a/Documentation/dontdiff a/drivers/char/heci/heci_main.c b/drivers/char/heci/heci_main.c --- a/drivers/char/heci/heci_main.c 1969-12-31 19:00:00.000000000 -0500 +++ b/drivers/char/heci/heci_main.c 2007-10-22 11:47:16.000000000 -0400 @@ -0,0 +1,1375 @@ +/* + * Part of Intel(R) Manageability Engine Interface Linux driver + * + * Copyright (c) 2003 - 2007 Intel Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + * + */ + + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "heci.h" +#include "heci_interface.h" +#include "heci_version.h" + + +#define HECI_READ_TIMEOUT 45 + +#define MAX_OPEN_HANDLE_COUNT 253 +/** + * heci driver strings + */ +char heci_driver_name[] = "heci"; +char heci_driver_string[] = "Intel(R) AMT Management Interface"; +char heci_driver_version[] = DRIVER_VERSION; +char heci_copyright[] = "Copyright (c) 2003 - 2007 Intel Corporation."; + + +#ifdef HECI_DEBUG +int heci_debug = 1; +#else +int heci_debug; /* initialized to 0 automatically.*/ +#endif +MODULE_PARM_DESC(heci_debug, "Debug enabled or not"); +module_param(heci_debug, int, 0644); + + +/* heci char device for registration */ +static struct cdev heci_cdev = { + .kobj = {.name = "heci", }, + .owner = THIS_MODULE, +}; + +/* iamt legacy char device for registration */ +static struct cdev iamt_legacy_cdev = { + .kobj = {.name = "iamt_legacy", }, + .owner = THIS_MODULE, +}; + +/* major number for device */ +static int heci_major; +/* The device pointer */ +static struct pci_dev *heci_device; + + +/* heci_pci_tbl - PCI Device ID Table */ +static struct pci_device_id heci_pci_tbl[] = { + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_HECI_DEVICE_ID1)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_HECI_DEVICE_ID2)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_HECI_DEVICE_ID3)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_HECI_DEVICE_ID4)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_HECI_DEVICE_ID5)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_HECI_DEVICE_ID6)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_HECI_DEVICE_ID7)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_HECI_DEVICE_ID8)}, + /* required last entry */ + {0, } +}; + +MODULE_DEVICE_TABLE(pci, heci_pci_tbl); + +/** + * Local Function Prototypes + */ +static int __init heci_init_module(void); +static void __exit heci_exit_module(void); +static int __devinit heci_probe(struct pci_dev *pdev, + const struct pci_device_id *ent); +static void __devexit heci_remove(struct pci_dev *pdev); +static int heci_open(struct inode *inode, struct file *file); +static int heci_release(struct inode *inode, struct file *file); +static unsigned int heci_legacy_poll(struct file *file, poll_table * wait); +static ssize_t heci_read(struct file *file, char __user *ubuf, + size_t length, loff_t *offset); +static int heci_ioctl(struct inode *inode, struct file *file, + unsigned int cmd, unsigned long data); +static ssize_t heci_write(struct file *file, const char __user *ubuf, + size_t length, loff_t *offset); +static unsigned int heci_poll(struct file *file, poll_table *wait); +/** + * PCI driver structure + */ +static struct pci_driver heci_driver = { + .name = heci_driver_name, + .id_table = heci_pci_tbl, + .probe = heci_probe, + .remove = heci_remove, + SHUTDOWN_METHOD(heci_remove) +}; + +/** + * file operations structure will be use heci char device. + */ +static struct file_operations heci_fops = { + .owner = THIS_MODULE, + .read = heci_read, + .ioctl = heci_ioctl, + .open = heci_open, + .release = heci_release, + .write = heci_write, + .poll = heci_poll, +}; + +/** + * file operations structure will be use iamt legacy char device. + */ +static struct file_operations iamt_legacy_fops = { + .owner = THIS_MODULE, + .ioctl = heci_ioctl, + .open = heci_open, + .release = heci_release, + .poll = heci_legacy_poll, +}; + +/** + * For kernels withouth PCI shutdown support reboot notifier is essential + */ +HECI_REBOOT_NOTIFIER(heci_reboot_notifier, heci_driver, heci_remove) + +/** + * Set up the cdev structure for heci device. + * @dev - char device struct + * @minor - minor number for registration char device + * @fops - file operations structure + * @return : + * 0 on success, + * negative on failure + */ +static int heci_registration_cdev(struct cdev *dev, int minor, + struct file_operations *fops) +{ + int ret = ESUCCESS, devno = MKDEV(heci_major, minor); + + cdev_init(dev, fops); + dev->owner = THIS_MODULE; + dev->ops = fops; + ret = cdev_add(dev, devno, 1); + /* Fail gracefully if need be */ + if (ret) { + kobject_put(&dev->kobj); + ERR("Error %d registering heci device %d", ret, minor); + } + return ret; +} + + + +/** + * heci_init_module - Driver Registration Routine + * + * heci_init_module is the first routine called when the driver is + * loaded. All it does is register with the PCI subsystem. + * + * @return : + * 0 on success, + * negative on failure + */ +static int __init heci_init_module(void) +{ + int ret = ESUCCESS; + dev_t dev; + INFO("%s - version %s\n", heci_driver_string, heci_driver_version); + INFO("%s\n", heci_copyright); + + /* init pci module */ + ret = pci_register_driver(&heci_driver); + if (ret < 0) + goto end; + + REGISTER_REBOOT_NOTIFIER(heci_reboot_notifier); + /* registration char devices */ + ret = alloc_chrdev_region(&dev, 0, MINORS_COUNT, "heci"); + + heci_major = MAJOR(dev); + /* Now registration two cdevs. */ + ret = heci_registration_cdev(&iamt_legacy_cdev, LEGACY_MINOR_NUMBER, + &iamt_legacy_fops); + if (ret) + goto unregister; + + ret = heci_registration_cdev(&heci_cdev, HECI_MINOR_NUMBER, + &heci_fops); + if (ret) { + cdev_del(&iamt_legacy_cdev); + goto unregister; + } + return ret; + +unregister: + pci_unregister_driver(&heci_driver); + unregister_chrdev_region(MKDEV(heci_major, 0), MINORS_COUNT); +end: + return ret; +} + +module_init(heci_init_module); + + +/** + * heci_exit_module - Driver Exit Cleanup Routine + * + * heci_exit_module is called just before the driver is removed + * from memory. + * + * @return : + * none; + */ + +static void __exit heci_exit_module(void) +{ + UNREGISTER_REBOOT_NOTIFIER(heci_reboot_notifier); + pci_unregister_driver(&heci_driver); + /* Now unregister two cdevs. */ + cdev_del(&iamt_legacy_cdev); + cdev_del(&heci_cdev); + unregister_chrdev_region(MKDEV(heci_major, 0), MINORS_COUNT); +} + +module_exit(heci_exit_module); + + +/** + * heci_probe - Device Initialization Routine + * + * @pdev: PCI device information struct + * @ent: entry in kcs_pci_tbl + * + * @return : + * 0 on success, + * negative on failure + */ +static int __devinit heci_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + struct iamt_heci_device *dev = NULL; + int i, err = 0; + if (heci_device) { + err = -EEXIST; + goto end; + } + /* enable pci dev */ + err = pci_enable_device(pdev); + if (err) { + ERR("Failed to enable pci dev\n"); + goto end; + } + /* set PCI host mastering */ + pci_set_master(pdev); + /* pci request regions for heci driver */ + err = pci_request_regions(pdev, heci_driver_name); + if (err) { + ERR("Failed to get pci regions\n"); + goto disable_device; + } + /* allocates and initializes the heci dev structure */ + dev = init_heci_device(pdev); + if (!dev) { + err = -ENOMEM; + goto release_regions; + } + /* mapping IO device memory */ + for (i = BAR_0; i <= BAR_5; i++) { + if (pci_resource_len(pdev, i) == 0) + continue; + if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { + ERR("heci has an IO ports.\n"); + goto free_device; + } else if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { + if (dev->mem_base) { + ERR("Too many mem addresses.\n"); + goto free_device; + } + dev->mem_base = pci_resource_start(pdev, i); + dev->mem_length = pci_resource_len(pdev, i); + } + } + if (!dev->mem_base) { + ERR("No address to use.\n"); + err = -ENODEV; + goto free_device; + } + dev->mem_addr = ioremap_nocache(dev->mem_base, + dev->mem_length); + if (!dev->mem_addr) { + ERR(" Remap IO device memory failure.\n"); + err = -ENOMEM; + goto free_device; + } + /* request and enable interrupt */ + dev->irq = pdev->irq; + err = request_irq(dev->irq, heci_isr_interrupt, IRQF_SHARED, + heci_driver_name, dev); + if (err) { + ERR("Request_irq failure. irq = %d \n", dev->irq); + goto unmap_memory; + } + + if (heci_hw_init(dev)) { + ERR("init hw failure.\n"); + err = -ENODEV; + goto release_irq; + } + init_timer(&dev->wd_timer); + heci_initialize_clients(dev); + if (dev->heci_state != HECI_ENABLED) { + err = -ENODEV; + goto release_hw; + } + spin_lock_bh(&dev->device_lock); + heci_device = pdev; + pci_set_drvdata(pdev, dev); + spin_unlock_bh(&dev->device_lock); + if (dev->wd_timeout) + mod_timer(&dev->wd_timer, jiffies); + + INFO("heci driver initialization successful.\n"); + return ESUCCESS; + +release_hw: + /* disable interrupts */ + dev->host_hw_state = read_heci_register(dev, H_CSR); + dev->host_hw_state &= ~H_IE; + /* acknowledge interrupt and stop interupts */ + write_heci_register(dev, H_CSR, dev->host_hw_state); + + del_timer_sync(&dev->wd_timer); + + + flush_scheduled_work(); + +release_irq: + free_irq(pdev->irq, dev); +unmap_memory: + if (dev->mem_addr) + iounmap(dev->mem_addr); +free_device: + kfree(dev); +release_regions: + pci_release_regions(pdev); +disable_device: + pci_disable_device(pdev); +end: + ERR("heci driver initialization failed.\n"); + return err; +} + +/** + * heci_remove - Device Removal Routine + * @pdev: PCI device information struct + * + * heci_remove is called by the PCI subsystem to alert the driver + * that it should release a PCI device. + * + * @return : + * none; + */ +static void __devexit heci_remove(struct pci_dev *pdev) +{ + struct iamt_heci_device *dev = pci_get_drvdata(pdev); + int err = 0; + + if (heci_device != pdev) + return; + del_timer_sync(&dev->wd_timer); + if (dev->wd_file_ext.state == HECI_FILE_CONNECTED + && dev->wd_timeout) { + spin_lock_bh(&dev->device_lock); + dev->wd_timeout = 0; + dev->wd_due_counter = 0; + memcpy(dev->wd_data, stop_wd_params, HECI_WD_PARAMS_SIZE); + dev->stop = TRUE; + if (dev->host_buffer_is_empty && + flow_ctrl_creds(dev, &dev->wd_file_ext)) { + dev->host_buffer_is_empty = FALSE; + + if (!heci_send_wd(dev)) + DBG("Send stop WD failed\n"); + else + flow_ctrl_reduce(dev, &dev->wd_file_ext); + dev->wd_pending = FALSE; + + } else { + dev->wd_pending = TRUE; + } + spin_unlock_bh(&dev->device_lock); + dev->wd_stoped = FALSE; + + err = wait_event_interruptible_timeout(dev->wait_stop_wd, + (TRUE == dev->wd_stoped), 10 * HZ); + if (!dev->wd_stoped) + DBG("stop wd failed to complete.\n"); + else + DBG("stop wd complete.\n"); + } + + heci_device = NULL; + if (dev->legacy_file_ext.status == HECI_FILE_CONNECTED) { + dev->legacy_file_ext.status = HECI_FILE_DISCONNECTING; + heci_disconnect_host_client(dev, + &dev->legacy_file_ext); + } + if (dev->wd_file_ext.status == HECI_FILE_CONNECTED) { + dev->wd_file_ext.status = HECI_FILE_DISCONNECTING; + heci_disconnect_host_client(dev, + &dev->wd_file_ext); + } + /* remove entry if already in list */ + DBG("list del legacy and wd file list.\n"); + heci_remove_client_from_file_list(dev, dev->wd_file_ext. + host_client_id); + heci_remove_client_from_file_list(dev, + dev->legacy_file_ext.host_client_id); + flush_scheduled_work(); + /* disable interrupts */ + dev->host_hw_state &= ~H_IE; + /* acknowledge interrupt and stop interupts */ + write_heci_register(dev, H_CSR, dev->host_hw_state); + free_irq(pdev->irq, dev); + pci_set_drvdata(pdev, NULL); + + if (dev->mem_addr) + iounmap(dev->mem_addr); + kfree(dev); + + pci_release_regions(pdev); + pci_disable_device(pdev); +} +/** + * heci_clear_list - remove all callbacks associated with file + * from heci_cb_list + * @file: file informtion struct + * @heci_cb_list: callbacks list + * heci_clear_list is called to clear resources associated with file + * when application calls close function or Ctrl-C was pressed + * + * @return :true if callback removed from the list, false otherwise + */ +static int heci_clear_list(struct iamt_heci_device *dev, + struct file *file, struct list_head *heci_cb_list) +{ + struct heci_cb_private *priv_cb_pos = NULL; + struct heci_cb_private*priv_cb_next = NULL; + struct file *file_temp = NULL; + int rets = FALSE; + + /* list all list member */ + list_for_each_entry_safe(priv_cb_pos, + priv_cb_next, heci_cb_list, cb_list) { + file_temp = (struct file *)priv_cb_pos->file_object; + /* check if list member associated with a file */ + if (file_temp == file) { + /* remove member from the list */ + list_del(&priv_cb_pos->cb_list); + /* check if cb equal to current legacy cb */ + if (dev->legacy_current_cb == priv_cb_pos) { + dev->legacy_current_cb = NULL; + /* send flow control to legacy client */ + heci_send_flow_control(dev, + &dev->legacy_file_ext); + } + /* free all allocated buffers */ + kfree(priv_cb_pos->request_buffer.data); + priv_cb_pos->request_buffer.data = NULL; + kfree(priv_cb_pos->response_buffer.data); + priv_cb_pos->response_buffer.data = NULL; + kfree(priv_cb_pos); + rets = TRUE; + } + } + return rets; +} + +/** + * heci_clear_lists - remove all callbacks associated with file + * @device: dev informtion struct + * @file: file informtion struct + * heci_clear_lists is called to clear resources associated with file + * when application calls close function or Ctrl-C was pressed + * + * @return :true if callback removed from the list, false otherwise + */ +static int heci_clear_lists(struct iamt_heci_device *dev, struct file *file) +{ + int rets = FALSE; + + /* remove callbacks associated with a file */ + heci_clear_list(dev, file, &dev->pthi_cmd_list.heci_cb.cb_list); + if (heci_clear_list(dev, + file, + &dev->pthi_read_complete_list.heci_cb.cb_list)) + rets = TRUE; + + heci_clear_list(dev, file, + &dev->ctrl_rd_list.heci_cb.cb_list); + + if (heci_clear_list(dev, file, &dev->ctrl_wr_list.heci_cb.cb_list)) + rets = TRUE; + + if (heci_clear_list(dev, file, + &dev->write_waiting_list.heci_cb.cb_list)) + rets = TRUE; + + if (heci_clear_list(dev, file, + &dev->write_list.heci_cb.cb_list)) + rets = TRUE; + + /* check if legacy_current_cb not NULL */ + if (dev->legacy_current_cb && (!rets)) { + /* check file and legacy current cb association */ + if (dev->legacy_current_cb->file_object == file) { + /* remove cb */ + kfree(dev->legacy_current_cb->request_buffer.data); + dev->legacy_current_cb->request_buffer.data = NULL; + kfree(dev->legacy_current_cb->response_buffer.data); + dev->legacy_current_cb->response_buffer.data = NULL; + kfree(dev->legacy_current_cb); + dev->legacy_current_cb = NULL; + rets = TRUE; + } + } + return rets; +} + +/** + * same_id - tell if they have same id + * @fe1 -file extension + * @fe2 -file extension + * + * @return : + * 0 on success, + * negative on failure. + */ + static int same_id(struct heci_file_private *fe1, + struct heci_file_private *fe2) +{ + if ((fe1->host_client_id == fe2->host_client_id) + && (fe1->me_client_id == fe2->me_client_id)) { + return 1; + } else { + return 0; + } +} + +/** + * heci_open - the open function + */ +static int heci_open(struct inode *inode, struct file *file) +{ + struct heci_file_private *file_ext = NULL; + int if_num = MINOR(inode->i_rdev); + struct iamt_heci_device *dev = NULL; + if (!heci_device) + return -ENODEV; + dev = pci_get_drvdata(heci_device); + if (((if_num != LEGACY_MINOR_NUMBER) + && (if_num != HECI_MINOR_NUMBER)) || (!dev)) + return -ENODEV; + + if (if_num != LEGACY_MINOR_NUMBER) { + file_ext = alloc_priv(file); + if (!file_ext) + return -ENOMEM; + } else { + file->private_data = (void *) &dev->legacy_file_ext; + return ESUCCESS; + } + spin_lock_bh(&dev->device_lock); + if (dev->heci_state != HECI_ENABLED) { + spin_unlock_bh(&dev->device_lock); + kfree(file_ext); + file_ext = NULL; + return -ENODEV; + } + if (dev->open_handle_count >= MAX_OPEN_HANDLE_COUNT) { + spin_unlock_bh(&dev->device_lock); + kfree(file_ext); + file_ext = NULL; + return -ENFILE; + }; + dev->open_handle_count++; + list_add_tail(&file_ext->link, &dev->file_list); + while ((dev->heci_host_clients[dev->current_host_client_id / 8] + & (1 << (dev->current_host_client_id % 8))) != 0) { + + dev->current_host_client_id++; /* allow overflow */ + DBG("current_host_client_id = %d\n", + dev->current_host_client_id); + DBG("dev->open_handle_count = %lu\n", + dev->open_handle_count); + } + DBG("current_host_client_id = %d\n", dev->current_host_client_id); + file_ext->host_client_id = dev->current_host_client_id; + dev->heci_host_clients[file_ext->host_client_id / 8] |= + (1 << (file_ext->host_client_id % 8)); + spin_unlock_bh(&dev->device_lock); + spin_lock(&file_ext->file_lock); + file_ext->state = HECI_FILE_INITIALIZING; + + file->private_data = file_ext; + spin_unlock(&file_ext->file_lock); + + return ESUCCESS; +} + +/** + * heci_release - the release function + */ +static int heci_release(struct inode *inode, struct file *file) +{ + int rets = ESUCCESS; + int if_num = MINOR(inode->i_rdev); + struct heci_file_private *file_ext = file->private_data; + struct heci_cb_private *priv_cb = NULL; + struct iamt_heci_device *dev = NULL; + + if (!heci_device) + return -ENODEV; + + dev = pci_get_drvdata(heci_device); + if (((if_num != LEGACY_MINOR_NUMBER) + && (if_num != HECI_MINOR_NUMBER)) || (!dev) + || (!file_ext)) + return -ENODEV; + if (file_ext != &dev->legacy_file_ext) { + + spin_lock(&file_ext->file_lock); + if (file_ext->state == HECI_FILE_CONNECTED) { + file_ext->state = HECI_FILE_DISCONNECTING; + spin_unlock(&file_ext->file_lock); + DBG("disconnecting client host client = %d, " + "ME client = %d\n", + file_ext->host_client_id, + file_ext->me_client_id); + rets = heci_disconnect_host_client(dev, file_ext); + spin_lock(&file_ext->file_lock); + } + spin_lock_bh(&dev->device_lock); + heci_flush_queues(dev, file_ext); + DBG("remove client host client = %d, ME client = %d\n", + file_ext->host_client_id, + file_ext->me_client_id); + + dev->heci_host_clients[file_ext->host_client_id / 8] &= + ~(1 << (file_ext->host_client_id % 8)); + dev->open_handle_count--; + heci_remove_client_from_file_list(dev, + file_ext->host_client_id); + spin_unlock_bh(&dev->device_lock); + + /* free read cb */ + if (file_ext->read_cb != NULL) { + spin_unlock(&file_ext->file_lock); + priv_cb = file_ext->read_cb; + kfree(priv_cb->response_buffer.data); + priv_cb->response_buffer.data = NULL; + kfree(priv_cb); + priv_cb = NULL; + + file_ext->read_cb = NULL; + spin_lock(&file_ext->file_lock); + } + spin_unlock(&file_ext->file_lock); + kfree(file_ext); + file->private_data = NULL; + } else { + spin_lock_bh(&dev->device_lock); + if (if_num != LEGACY_MINOR_NUMBER) + dev->open_handle_count--; + + if (dev->legacy_file_object == file + && dev->legacy_state != HECI_LEGACY_IDLE) { + + DBG("pthi canceled legacy state %d\n", + dev->legacy_state); + dev->legacy_canceled = TRUE; + if (dev->legacy_state == HECI_LEGACY_READ_COMPLETE) { + DBG("run next pthi legacy cb\n"); + run_next_legacy_cmd(dev); + } + } + + if (heci_clear_lists(dev, file)) + dev->legacy_state = HECI_LEGACY_IDLE; + + spin_unlock_bh(&dev->device_lock); + } + return rets; +} + +/* +static int same_id(struct heci_file_private *fe1, + struct heci_file_private *fe2) +{ + if ((fe1->host_client_id == fe2->host_client_id) + && (fe1->me_client_id == fe2->me_client_id)) { + return 1; + } else { + return 0; + } +} +*/ + + +static struct heci_cb_private *find_read_list_entry( + struct iamt_heci_device *dev, + struct heci_file_private *file_ext) +{ + struct heci_cb_private *priv_cb_pos = NULL; + struct heci_cb_private *priv_cb_next = NULL; + struct heci_file_private *file_ext_list_temp = NULL; + + if (dev->read_list.status == ESUCCESS + && !list_empty(&dev->read_list.heci_cb.cb_list)) { + DBG("remove read_list CB \n"); + list_for_each_entry_safe(priv_cb_pos, + priv_cb_next, + &dev->read_list.heci_cb.cb_list, cb_list) { + + file_ext_list_temp = (struct heci_file_private *) + priv_cb_pos->file_private; + + if (file_ext_list_temp && + same_id(file_ext, file_ext_list_temp)) + return priv_cb_pos; + } + } + return NULL; +} +/** + * heci_read - the read client message function. + */ +static ssize_t heci_read(struct file *file, char __user *ubuf, + size_t length, loff_t *offset) +{ + int i; + int rets = ESUCCESS, err = ESUCCESS; + int if_num = MINOR((file->f_dentry->d_inode->i_rdev)); + struct heci_file_private *file_ext = file->private_data; + struct heci_cb_private *priv_cb_pos = NULL; + struct heci_cb_private *priv_cb = NULL; + struct iamt_heci_device *dev = NULL; + + if (!heci_device) + return -ENODEV; + + dev = pci_get_drvdata(heci_device); + if ((if_num != HECI_MINOR_NUMBER) || (!dev) || (!file_ext)) + return -ENODEV; + + spin_lock_bh(&dev->device_lock); + if (dev->heci_state != HECI_ENABLED) { + spin_unlock_bh(&dev->device_lock); + return -ENODEV; + } + spin_unlock_bh(&dev->device_lock); + if (!file_ext) + return -ENODEV; + + /* Do not allow to read watchdog client */ + for (i = 0; i < dev->num_heci_me_clients; i++) { + if (0 == memcmp(&heci_wd_guid, + &dev->me_clients[i].props.protocol_name, + sizeof(struct guid))) { + if (file_ext->me_client_id == + dev->me_clients[i].client_id) + return -EBADF; + } + } + if (file_ext == &dev->legacy_file_ext) { + rets = pthi_read(dev, if_num, file, ubuf, length, offset); + goto out; + } + + if (file_ext->read_cb && file_ext->read_cb->information < *offset) { + priv_cb = file_ext->read_cb; + goto copy_buffer; + } else if (file_ext->read_cb && file_ext->read_cb->information > 0 && + file_ext->read_cb->information <= *offset) { + priv_cb = file_ext->read_cb; + rets = 0; + goto free; + } else if ((!file_ext->read_cb || file_ext->read_cb->information == 0) + && *offset > 0) { + /*Offset needs to be cleaned for contingous reads*/ + *offset = 0; + rets = 0; + goto out; + } + + spin_lock(&file_ext->read_io_lock); + err = heci_start_read(dev, if_num, file_ext); + if (err != ESUCCESS && err != -EBUSY) { + DBG("heci start read failure with status = %d\n", err); + spin_unlock(&file_ext->read_io_lock); + rets = err; + goto out; + } + if (HECI_READ_COMPLETE != file_ext->reading_state + && !waitqueue_active(&file_ext->rx_wait)) { + if (file->f_flags & O_NONBLOCK) { + rets = -EAGAIN; + spin_unlock(&file_ext->read_io_lock); + goto out; + } + spin_unlock(&file_ext->read_io_lock); + + if (wait_event_interruptible(file_ext->rx_wait, + (HECI_READ_COMPLETE == file_ext->reading_state + || HECI_FILE_INITIALIZING == file_ext->state + || HECI_FILE_DISCONNECTED == file_ext->state + || HECI_FILE_DISCONNECTING == file_ext->state))) { + if (signal_pending (current)) { + rets = -EINTR; + goto out; + } + return -ERESTARTSYS; + } + + if (HECI_FILE_INITIALIZING == file_ext->state || + HECI_FILE_DISCONNECTED == file_ext->state || + HECI_FILE_DISCONNECTING == file_ext->state) { + rets = -EBUSY; + goto out; + } + spin_lock(&file_ext->read_io_lock); + } + + priv_cb = file_ext->read_cb; + + if (!priv_cb) { + spin_unlock(&file_ext->read_io_lock); + return -ENODEV; + } + if (file_ext->reading_state != HECI_READ_COMPLETE) { + spin_unlock(&file_ext->read_io_lock); + return ESUCCESS; + } + spin_unlock(&file_ext->read_io_lock); + /* now copy the data to user space */ +copy_buffer: + DBG("priv_cb->response_buffer size - %d\n", + priv_cb->response_buffer.size); + DBG("priv_cb->information - %lu\n", + priv_cb->information); + if (length == 0 || ubuf == NULL || + *offset > priv_cb->information) { + rets = -EMSGSIZE; + goto free; + } + + /* length is being turncated to PAGE_SIZE, however, */ + /* information size may be longer */ + length = (length < (priv_cb->information - *offset) ? + length : (priv_cb->information - *offset)); + + if (copy_to_user(ubuf, + priv_cb->response_buffer.data + *offset, + length)) { + + rets = -EFAULT; + goto free; + } else { + rets = length; + *offset += length; + if ((unsigned long)*offset < priv_cb->information) + goto out; + } +free: + spin_lock_bh(&dev->device_lock); + priv_cb_pos = find_read_list_entry(dev, file_ext); + /* Remove entry from read list */ + if (priv_cb_pos != NULL) + list_del(&priv_cb_pos->cb_list); + spin_unlock_bh(&dev->device_lock); + kfree(priv_cb->response_buffer.data); + priv_cb->response_buffer.data = NULL; + kfree(priv_cb); + priv_cb = NULL; + spin_lock(&file_ext->read_io_lock); + file_ext->reading_state = HECI_IDLE; + file_ext->read_cb = NULL; + file_ext->read_pending = FALSE; + spin_unlock(&file_ext->read_io_lock); +out: DBG("end heci read rets= %d\n", rets); + return rets; +} + +/** + * heci_write - the write function. + */ +static ssize_t heci_write(struct file *file, const char __user *ubuf, + size_t length, loff_t *offset) +{ + int rets = ESUCCESS; + __u8 i; + int if_num = MINOR((file->f_dentry->d_inode->i_rdev)); + struct heci_file_private *file_ext = file->private_data; + struct heci_cb_private *priv_write_cb = NULL; + struct heci_msg_hdr heci_hdr; + struct iamt_heci_device *dev = NULL; + unsigned long currtime = get_seconds(); + + if (!heci_device) + return -ENODEV; + dev = pci_get_drvdata(heci_device); + + if ((if_num != HECI_MINOR_NUMBER) || (!dev) || (!file_ext)) + return -ENODEV; + spin_lock_bh(&dev->device_lock); + + if (dev->heci_state != HECI_ENABLED) { + spin_unlock_bh(&dev->device_lock); + return -ENODEV; + } + if (file_ext == &dev->legacy_file_ext) { + priv_write_cb = find_pthi_read_list_entry(dev, file, file_ext); + if ((priv_write_cb && currtime - priv_write_cb->read_time + > LEGACY_READ_TIMER) || + (priv_write_cb && file_ext->reading_state + == HECI_READ_COMPLETE)) { + *offset = 0; + list_del(&priv_write_cb->cb_list); + kfree(priv_write_cb->request_buffer.data); + kfree(priv_write_cb->response_buffer.data); + kfree(priv_write_cb); + } + } + + /* free entry used in read */ + if (file_ext->reading_state == HECI_READ_COMPLETE) { + *offset = 0; + priv_write_cb = find_read_list_entry(dev, file_ext); + if (priv_write_cb != NULL) { + list_del(&priv_write_cb->cb_list); + kfree(priv_write_cb->response_buffer.data); + priv_write_cb->response_buffer.data = NULL; + kfree(priv_write_cb); + priv_write_cb = NULL; + spin_lock(&file_ext->read_io_lock); + file_ext->reading_state = HECI_IDLE; + file_ext->read_cb = NULL; + file_ext->read_pending = FALSE; + spin_unlock(&file_ext->read_io_lock); + } + } else if (file_ext->reading_state == HECI_IDLE && + file_ext->read_pending == FALSE) + *offset = 0; + + spin_unlock_bh(&dev->device_lock); + + priv_write_cb = kmalloc(sizeof(struct heci_cb_private), GFP_KERNEL); + if (!priv_write_cb) + return -ENOMEM; + spin_lock(&file_ext->file_lock); + priv_write_cb->request_buffer.data = NULL; + priv_write_cb->response_buffer.data = NULL; + priv_write_cb->file_object = file; + priv_write_cb->file_private = file_ext; + spin_unlock(&file_ext->file_lock); + priv_write_cb->request_buffer.data = kmalloc(length, GFP_KERNEL); + if (!priv_write_cb->request_buffer.data) { + kfree(priv_write_cb); + return -ENOMEM; + } + DBG("length =%d\n", (int) length); + + if (copy_from_user(priv_write_cb->request_buffer.data, + ubuf, length)) { + rets = -EFAULT; + goto fail; + } + INIT_LIST_HEAD(&priv_write_cb->cb_list); + if (file_ext == &dev->legacy_file_ext) { + priv_write_cb->response_buffer.data = + kmalloc(LEGACY_MTU, GFP_KERNEL); + if (!priv_write_cb->response_buffer.data) { + rets = -ENOMEM; + goto fail; + } + spin_lock_bh(&dev->device_lock); + if (dev->heci_state != HECI_ENABLED) { + spin_unlock_bh(&dev->device_lock); + rets = -ENODEV; + goto fail; + } + for (i = 0; i < dev->num_heci_me_clients; i++) { + if (dev->me_clients[i].client_id == + dev->legacy_file_ext.me_client_id) + break; + } + + BUG_ON(dev->me_clients[i].client_id != file_ext->me_client_id); + if ((i == dev->num_heci_me_clients) || + (dev->me_clients[i].client_id != + dev->legacy_file_ext.me_client_id)) { + + spin_unlock_bh(&dev->device_lock); + rets = -ENODEV; + goto fail; + } else if (length > dev->me_clients[i].props.max_msg_length + || length <= 0) { + spin_unlock_bh(&dev->device_lock); + rets = -EMSGSIZE; + goto fail; + } + + + priv_write_cb->response_buffer.size = LEGACY_MTU; + priv_write_cb->major_file_operations = HECI_IOCTL; + priv_write_cb->information = 0; + priv_write_cb->request_buffer.size = length; + if (dev->legacy_file_ext.state != HECI_FILE_CONNECTED) { + spin_unlock_bh(&dev->device_lock); + rets = -ENODEV; + goto fail; + } + + if (!list_empty(&dev->pthi_cmd_list.heci_cb.cb_list) + || dev->legacy_state != HECI_LEGACY_IDLE) { + DBG("pthi_state = %d\n", (int) dev->legacy_state); + DBG("add PTHI cb to pthi cmd waiting list\n"); + list_add_tail(&priv_write_cb->cb_list, + &dev->pthi_cmd_list.heci_cb.cb_list); + rets = length; + } else { + DBG("call pthi write"); + rets = pthi_write(dev, priv_write_cb); + + if (ESUCCESS != rets) { + DBG("pthi write failed with status = %d\n", + rets); + spin_unlock_bh(&dev->device_lock); + goto fail; + }; + rets = length; + } + spin_unlock_bh(&dev->device_lock); + return rets; + } + + priv_write_cb->major_file_operations = HECI_WRITE; + /* make sure information is zero before we start */ + + priv_write_cb->information = 0; + priv_write_cb->request_buffer.size = length; + + spin_lock(&file_ext->write_io_lock); + DBG("host client = %d, ME client = %d\n", + file_ext->host_client_id, file_ext->me_client_id); + if (file_ext->state != HECI_FILE_CONNECTED) { + rets = -ENODEV; + DBG("host client = %d, is not connected to ME client = %d", + file_ext->host_client_id, + file_ext->me_client_id); + + goto unlock; + } + for (i = 0; i < dev->num_heci_me_clients; i++) { + if (dev->me_clients[i].client_id == + file_ext->me_client_id) + break; + } + BUG_ON(dev->me_clients[i].client_id != file_ext->me_client_id); + if (i == dev->num_heci_me_clients) { + rets = -ENODEV; + goto unlock; + } + if (length > dev->me_clients[i].props.max_msg_length || length <= 0) { + rets = -EINVAL; + goto unlock; + } + priv_write_cb->file_private = file_ext; + + spin_lock_bh(&dev->device_lock); + if (flow_ctrl_creds(dev, file_ext) && + dev->host_buffer_is_empty) { + spin_unlock_bh(&dev->device_lock); + dev->host_buffer_is_empty = FALSE; + if (length > ((((dev->host_hw_state & H_CBD) >> 24) * + sizeof(__u32)) - sizeof(struct heci_msg_hdr))) { + + heci_hdr.length = + (((dev->host_hw_state & H_CBD) >> 24) * + sizeof(__u32)) - + sizeof(struct heci_msg_hdr); + heci_hdr.msg_complete = 0; + } else { + heci_hdr.length = length; + heci_hdr.msg_complete = 1; + } + heci_hdr.host_addr = file_ext->host_client_id; + heci_hdr.me_addr = file_ext->me_client_id; + heci_hdr.reserved = 0; + DBG("call heci_write_message header=%08x.\n", + *((__u32 *) & heci_hdr)); + spin_unlock(&file_ext->write_io_lock); + /* protect heci low level write */ + spin_lock_bh(&dev->device_lock); + if (!heci_write_message(dev, &heci_hdr, + (unsigned char *) (priv_write_cb->request_buffer.data), + heci_hdr.length)) { + + spin_unlock_bh(&dev->device_lock); + kfree(priv_write_cb->request_buffer.data); + priv_write_cb->request_buffer.data = NULL; + kfree(priv_write_cb); + rets = -ENODEV; + priv_write_cb->information = 0; + return rets; + } + file_ext->writing_state = HECI_WRITING; + priv_write_cb->information = heci_hdr.length; + if (heci_hdr.msg_complete) { + flow_ctrl_reduce(dev, file_ext); + list_add_tail(&priv_write_cb->cb_list, + &dev->write_waiting_list.heci_cb.cb_list); + } else { + list_add_tail(&priv_write_cb->cb_list, + &dev->write_list.heci_cb.cb_list); + } + spin_unlock_bh(&dev->device_lock); + + } else { + + spin_unlock_bh(&dev->device_lock); + priv_write_cb->information = 0; + file_ext->writing_state = HECI_WRITING; + spin_unlock(&file_ext->write_io_lock); + list_add_tail(&priv_write_cb->cb_list, + &dev->write_list.heci_cb.cb_list); + } + return length; + +unlock: + spin_unlock(&file_ext->write_io_lock); +fail: + kfree(priv_write_cb->request_buffer.data); + priv_write_cb->request_buffer.data = NULL; + kfree(priv_write_cb->response_buffer.data); + priv_write_cb->response_buffer.data = NULL; + kfree(priv_write_cb); + return rets; + +} + +/** + * heci_ioctl - the IOCTL function + */ +static int heci_ioctl(struct inode *inode, struct file *file, + unsigned int cmd, unsigned long data) +{ + + int rets = ESUCCESS; + int if_num = MINOR(inode->i_rdev); + struct heci_file_private *file_ext = file->private_data; + /* in user space */ + struct heci_message_data *u_msg = (struct heci_message_data *) data; + struct heci_message_data k_msg; /* all in kernel on the stack */ + struct iamt_heci_device *dev = NULL; + + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + if (!heci_device) + return -ENODEV; + dev = pci_get_drvdata(heci_device); + if (((if_num != LEGACY_MINOR_NUMBER) + && (if_num != HECI_MINOR_NUMBER)) || (!dev) + || (!file_ext)) + return -ENODEV; + if (dev->heci_state != HECI_ENABLED) + return -ENODEV; + /* first copy from user all data needed */ + if (copy_from_user(&k_msg, u_msg, sizeof(k_msg))) { + DBG("first copy from user all data needed filed\n"); + return -EFAULT; + } + DBG("user message size is %d\n", k_msg.size); + + switch (cmd) { + case IOCTL_HECI_GET_VERSION: + DBG(": IOCTL_HECI_GET_VERSION\n"); + rets = + heci_ioctl_get_version(dev, if_num, u_msg, k_msg, file_ext); + break; + case IOCTL_HECI_CONNECT_CLIENT: + DBG(": IOCTL_HECI_CONNECT_CLIENT.\n"); + rets = + heci_ioctl_connect_client(dev, if_num, u_msg, k_msg, file); + break; + case IOCTL_HECI_WD: + DBG(": IOCTL_HECI_WD.\n"); + rets = + heci_ioctl_wd(dev, if_num, k_msg, file_ext); + break; + case IOCTL_HECI_BYPASS_WD: + DBG(": IOCTL_HECI_BYPASS_WD.\n"); + rets = + heci_ioctl_bypass_wd(dev, if_num, k_msg, file_ext); + break; + case IAMT_KCS_SEND_MESSAGE_COMMAND: + DBG(": IAMT_KCS_SEND_MESSAGE_COMMAND.\n"); + rets = + legacy_ioctl_send_msg(dev, if_num, k_msg, file); + break; + case IAMT_KCS_RECEIVE_MESSAGE_COMMAND: + DBG(": IAMT_KCS_RECEIVE_MESSAGE_COMMAND.\n"); + rets = + legacy_ioctl_recv_msg(dev, if_num, u_msg, k_msg, file); + break; + + default: + rets = -EINVAL; + break; + } + return rets; +} + +/** + * heci_legacy_poll - the poll function + */ +static unsigned int heci_legacy_poll(struct file *file, poll_table * wait) +{ + int if_num = MINOR((file->f_dentry->d_inode->i_rdev)); + unsigned int mask = 0; + struct iamt_heci_device *dev = NULL; + struct heci_file_private *file_ext = file->private_data; + + + if (!heci_device || !file_ext) + return mask; + + dev = pci_get_drvdata(heci_device); + + if ((if_num != LEGACY_MINOR_NUMBER) || (!dev)) + return mask; + + spin_lock_bh(&dev->device_lock); + if (dev->heci_state != HECI_ENABLED) { + spin_unlock_bh(&dev->device_lock); + return mask; + } + spin_unlock_bh(&dev->device_lock); + + if (file_ext == &dev->legacy_file_ext) { + poll_wait(file, &dev->legacy_file_ext.wait, wait); + spin_lock(&dev->legacy_file_ext.file_lock); + if (dev->legacy_state == HECI_LEGACY_READ_COMPLETE + && dev->legacy_file_object == file) { + mask |= (POLLIN | POLLRDNORM); + spin_lock_bh(&dev->device_lock); + DBG("run next pthi legacy cb\n"); + run_next_legacy_cmd(dev); + spin_unlock_bh(&dev->device_lock); + } + spin_unlock(&dev->legacy_file_ext.file_lock); + } + + return mask; +} + +/** + * heci_poll - the poll function + */ +static unsigned int heci_poll(struct file *file, poll_table * wait) +{ + int if_num = MINOR((file->f_dentry->d_inode->i_rdev)); + unsigned int mask = 0; + struct heci_file_private *file_ext = file->private_data; + struct iamt_heci_device *dev = NULL; + + if (!heci_device) + return mask; + + + dev = pci_get_drvdata(heci_device); + + if ((if_num != HECI_MINOR_NUMBER) || (!dev) || (!file_ext)) + return mask; + + spin_lock_bh(&dev->device_lock); + if (dev->heci_state != HECI_ENABLED) { + spin_unlock_bh(&dev->device_lock); + return mask; + + } + spin_unlock_bh(&dev->device_lock); + + if (file_ext == &dev->legacy_file_ext) { + poll_wait(file, &dev->legacy_file_ext.wait, wait); + spin_lock(&dev->legacy_file_ext.file_lock); + if (dev->legacy_state == HECI_LEGACY_READ_COMPLETE + && dev->legacy_file_object == file) { + mask |= (POLLIN | POLLRDNORM); + spin_lock_bh(&dev->device_lock); + DBG("run next pthi cb"); + run_next_legacy_cmd(dev); + spin_unlock_bh(&dev->device_lock); + } + spin_unlock(&dev->legacy_file_ext.file_lock); + + } else{ + poll_wait(file, &file_ext->tx_wait, wait); + spin_lock(&file_ext->write_io_lock); + if (HECI_WRITE_COMPLETE == file_ext->writing_state) + mask |= (POLLIN | POLLRDNORM); + spin_unlock(&file_ext->write_io_lock); + } + + return mask; +} + +MODULE_AUTHOR("Intel Corporation"); /* FIXME: Add email address here */ +MODULE_DESCRIPTION("Intel(R) AMT Management Interface"); +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_VERSION(DRIVER_VERSION); diff -uprN -X a/Documentation/dontdiff a/drivers/char/heci/heci_version.h b/drivers/char/heci/heci_version.h --- a/drivers/char/heci/heci_version.h 1969-12-31 19:00:00.000000000 -0500 +++ b/drivers/char/heci/heci_version.h 2007-10-22 10:30:36.000000000 -0400 @@ -0,0 +1,56 @@ +/* + * Part of Intel(R) Manageability Engine Interface Linux driver + * + * Copyright (c) 2006-2007 Intel Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + * + */ + +#ifndef HECI_VERSION_H +#define HECI_VERSION_H + +#define MAJOR_VERSION 3 +#define MINOR_VERSION 1 +#define QUICK_FIX_NUMBER 0 +#define VER_BUILD 31 + +#define str(s) name(s) +#define name(s) #s +#define DRIVER_V1 str(MAJOR_VERSION) "." str(MINOR_VERSION) +#define DRIVER_V2 str(QUICK_FIX_NUMBER) "." str(VER_BUILD) + +#define DRIVER_VERSION DRIVER_V1 "." DRIVER_V2 + +#endif diff -uprN -X a/Documentation/dontdiff a/drivers/char/heci/interrupt.c b/drivers/char/heci/interrupt.c --- a/drivers/char/heci/interrupt.c 1969-12-31 19:00:00.000000000 -0500 +++ b/drivers/char/heci/interrupt.c 2007-10-22 10:30:36.000000000 -0400 @@ -0,0 +1,1599 @@ +/* + * Part of Intel(R) Manageability Engine Interface Linux driver + * + * Copyright (c) 2006-2007 Intel Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + * + */ + +#include +#include +#include "heci.h" +#include "heci_interface.h" + +/** + * interrupt function prototypes + */ + +void heci_bh_handler(struct work_struct *work); +int heci_bh_read_handler(struct io_heci_list *complete_list, + struct iamt_heci_device *dev, + __s32 *slots); +int heci_bh_write_handler(struct io_heci_list *complete_list, + struct iamt_heci_device *dev, + __s32 *slots); +void heci_bh_read_bus_message(struct iamt_heci_device *dev, + struct heci_msg_hdr *heci_hdr); +int heci_bh_read_pthi_message(struct io_heci_list *complete_list, + struct iamt_heci_device *dev, + struct heci_msg_hdr *heci_hdr); +int heci_bh_read_client_message(struct io_heci_list *complete_list, + struct iamt_heci_device *dev, + struct heci_msg_hdr *heci_hdr); +void heci_client_connect_response(struct iamt_heci_device *dev, + struct hbm_client_connect_response *connect_res); +void heci_client_disconnect_response(struct iamt_heci_device *dev, + struct hbm_client_connect_response *disconnect_res); +void heci_client_flow_control_response(struct iamt_heci_device *dev, + struct hbm_flow_control *flow_control); +void heci_client_disconnect_request(struct iamt_heci_device *dev, + struct hbm_client_disconnect_request *disconnect_req); + + +/** + * heci_isr_interrupt - The ISR of the HECI device + * @irq: The irq number + * @dev_id: pointer to the device structure + * @regs: the register values + * + * @return : + * irqreturn_t + */ +irqreturn_t heci_isr_interrupt(int irq, void *dev_id) +{ + int err; + struct iamt_heci_device *device = (struct iamt_heci_device *) dev_id; + device->host_hw_state = read_heci_register(device, H_CSR); + + if ((device->host_hw_state & H_IS) != H_IS) + return IRQ_NONE; + + /* disable interrupts */ + device->host_hw_state &= ~H_IE; + /* acknowledge interrupt and stop interupts */ + write_heci_register(device, H_CSR, device->host_hw_state); + /** + * Our device interrupted, schedule work the heci_bh_handler + * to handle the interrupt processing. This needs to be a + * workqueue item since the handler can sleep. + */ + PREPARE_WORK(&device->work, heci_bh_handler); + DBG("schedule work the heci_bh_handler \n"); + err = schedule_work(&device->work); + if (!err) + ERR("schedule the heci_bh_handler failed error=%x\n", err); + return IRQ_HANDLED; +} + +/** + * _heci_cmpl: process completed operation. + * @priv_cb_pos: callback block. + * @file_ext: file extension. + * + * @return : + * none. + */ +static void _heci_cmpl(struct heci_file_private *file_ext, + struct heci_cb_private *priv_cb_pos) +{ + if (priv_cb_pos->major_file_operations == HECI_WRITE) { + + kfree(priv_cb_pos->request_buffer.data); + priv_cb_pos->request_buffer.data = NULL; + kfree(priv_cb_pos); + priv_cb_pos = NULL; + DBG("completing write call back.\n"); + file_ext->writing_state = HECI_WRITE_COMPLETE; + if (&file_ext->tx_wait && + waitqueue_active(&file_ext->tx_wait)) + wake_up_interruptible(&file_ext->tx_wait); + } else if (priv_cb_pos->major_file_operations == HECI_READ + && HECI_READING == file_ext->reading_state) { + DBG("completing read call back information= %lu\n", + priv_cb_pos->information); + file_ext->reading_state = HECI_READ_COMPLETE; + if (&file_ext->rx_wait + && waitqueue_active(&file_ext->rx_wait)) + wake_up_interruptible(&file_ext->rx_wait); + } +} + +/** + * _heci_cmpl_legacy: process completed legacy operation. + * @dev: device object. + * @priv_cb_pos: callback block. + * + * @return : + * none. + */ +static void _heci_cmpl_legacy(struct iamt_heci_device *dev, + struct heci_cb_private *priv_cb_pos) +{ + if (dev->legacy_canceled != TRUE) { + dev->legacy_state = HECI_LEGACY_READ_COMPLETE; + dev->legacy_stall_timer = 0; + memcpy(priv_cb_pos->response_buffer.data, + dev->legacy_msg_buf, + dev->legacy_msg_buf_index); + list_add_tail(&priv_cb_pos->cb_list, + &dev->pthi_read_complete_list.heci_cb.cb_list); + DBG("pthi read completed\n"); + } else { + run_next_legacy_cmd(dev); + } + if (&dev->legacy_file_ext.wait) { + DBG("completing pthi call back.\n"); + wake_up_interruptible(&dev->legacy_file_ext.wait); + + } +} +/** + * heci_bh_handler - function called after ISR to handle the interrupt + * processing. + * @data: pointer to the device structure + * + * NOTE: This function is called by schedule work + * @return : + * none; + */ +void heci_bh_handler(struct work_struct *work) +{ + struct iamt_heci_device *dev = + container_of(work, struct iamt_heci_device, work); + struct io_heci_list complete_list; + __s32 slots; + int rets; + struct heci_cb_private *cb_pos = NULL, *cb_next = NULL; + struct heci_file_private *file_ext = NULL; + int bus_message_received = FALSE; + struct task_struct *tsk; + + DBG("function called after ISR to handle the interrupt processing.\n"); + /* initialize our complete list */ + spin_lock_bh(&dev->device_lock); + heci_initialize_list(&complete_list, dev); + dev->host_hw_state = read_heci_register(dev, H_CSR); + dev->me_hw_state = read_heci_register(dev, ME_CSR_HA); + + /* check if ME wants a reset */ + if (((dev->me_hw_state & ME_RDY_HRA) == 0) && + (dev->heci_state != HECI_RESETING) + && (dev->heci_state != HECI_INITIALIZING)) { + DBG("FW not ready.\n"); + heci_reset(dev, TRUE); + spin_unlock_bh(&dev->device_lock); + return; + } + + /* check if we need to start the dev */ + if ((dev->host_hw_state & H_RDY) == 0) { + + if ((dev->me_hw_state & ME_RDY_HRA) == ME_RDY_HRA) { + DBG("we need to start the dev.\n"); + dev->host_hw_state |= (H_IE | H_IG | H_RDY); + write_heci_register(dev, H_CSR, dev->host_hw_state); + if (dev->heci_state == HECI_INITIALIZING) { + + dev->recvd_msg = TRUE; + spin_unlock_bh(&dev->device_lock); + wake_up_interruptible(&dev->wait_recvd_msg); + return; + + } else { + spin_unlock_bh(&dev->device_lock); + tsk = kthread_run(heci_initialize_clients, + dev, "heci"); + if (IS_ERR(tsk)) { + int rc = PTR_ERR(tsk); + printk(KERN_WARNING "heci: Unable to" + "start the heci thread: %d\n", rc); + } + return; + } + + + } else { + DBG("Enable interrupt FW not ready \n"); + dev->host_hw_state |= (H_IE); + write_heci_register(dev, H_CSR, dev->host_hw_state); + spin_unlock_bh(&dev->device_lock); + return; + } + } + /* check slots avalable for reading */ + slots = count_full_read_slots(dev); + DBG("slots =%08x extra_write_index =%08x.\n", + slots, dev->extra_write_index); + while ((slots > 0) && (!dev->extra_write_index)) { + DBG("slots =%08x extra_write_index =%08x.\n", slots, + dev->extra_write_index); + DBG("call heci_bh_read_handler.\n"); + rets = heci_bh_read_handler(&complete_list, dev, &slots); + if (rets != ESUCCESS) + goto end; + } + rets = heci_bh_write_handler(&complete_list, dev, &slots); +end: + DBG("end of bottom half function.\n"); + dev->host_hw_state = read_heci_register(dev, H_CSR); + dev->host_buffer_is_empty = host_buffer_is_empty(dev); + + if ((dev->host_hw_state & H_IS) == H_IS) { + PREPARE_WORK(&dev->work, heci_bh_handler); + DBG("schedule work the heci_bh_handler.\n"); + rets = schedule_work(&dev->work); + if (!rets) + ERR("schedule work the heci_bh_handler failed" + " error=%x\n", rets); + } else { + dev->host_hw_state |= H_IE; + } + + write_heci_register(dev, H_CSR, dev->host_hw_state); + + + if (dev->recvd_msg + && waitqueue_active(&dev->wait_recvd_msg)) { + DBG("received waiting bus message\n"); + bus_message_received = TRUE; + } + spin_unlock_bh(&dev->device_lock); + if (bus_message_received) { + DBG("wake up dev->wait_recvd_msg\n"); + wake_up_interruptible(&dev->wait_recvd_msg); + bus_message_received = FALSE; + } + if (complete_list.status != ESUCCESS + || list_empty(&complete_list.heci_cb.cb_list)) + return; + + + list_for_each_entry_safe(cb_pos, cb_next, + &complete_list.heci_cb.cb_list, cb_list) { + file_ext = (struct heci_file_private *)cb_pos->file_private; + list_del(&cb_pos->cb_list); + if (file_ext && file_ext != &dev->legacy_file_ext) { + DBG("completing call back.\n"); + _heci_cmpl(file_ext, cb_pos); + cb_pos = NULL; + } else if (file_ext == &dev->legacy_file_ext) { + _heci_cmpl_legacy(dev, cb_pos); + } + } + return; +} + + +/** + * heci_bh_read_handler - bottom half read routine after ISR to + * handle the read processing. + * + * + * @complete_list - An instance of our list structure + * @dev - Device object for our driver + * @slots - slots to read. + * @return : + * 0 on success, + * negative on failure. + */ +int heci_bh_read_handler(struct io_heci_list *cmpl_list, + struct iamt_heci_device *dev, + __s32 *slots) +{ + struct heci_msg_hdr *heci_hdr; + int ret = ESUCCESS; + struct heci_file_private *file_pos = NULL; + struct heci_file_private *file_next = NULL; + + if (!dev->rd_msg_hdr) { + dev->rd_msg_hdr = read_heci_register(dev, ME_CB_RW); + DBG("slots=%08x.\n", *slots); + (*slots)--; + DBG("slots=%08x.\n", *slots); + } + heci_hdr = (struct heci_msg_hdr *) & dev->rd_msg_hdr; + DBG("heci_hdr->length =%d\n", heci_hdr->length); + + if ((heci_hdr->reserved) || !(dev->rd_msg_hdr)) { + DBG("corrupted message header.\n"); + ret = -ECORRUPTED_MESSAGE_HEADER; + goto end; + } + + if (heci_hdr->host_addr || heci_hdr->me_addr) { + + list_for_each_entry_safe(file_pos, file_next, + &dev->file_list, link) { + DBG("list_for_each_entry_safe read host" + " client = %d, ME client = %d\n", + file_pos->host_client_id, + file_pos->me_client_id); + if ((file_pos->host_client_id == heci_hdr->host_addr) + && (file_pos->me_client_id == heci_hdr->me_addr)) + break; + } + + if (&file_pos->link == &dev->file_list) { + DBG("corrupted message header\n"); + ret = -ECORRUPTED_MESSAGE_HEADER; + goto end; + + } + } + if (((*slots) * sizeof(__u32)) < heci_hdr->length) { + DBG("we can't read the message slots=%08x.\n", *slots); + /* we can't read the message */ + ret = -ERANGE; + goto end; + } + + + /* decide where to read the message too */ + if (!heci_hdr->host_addr) { + DBG("call heci_bh_read_bus_message.\n"); + heci_bh_read_bus_message(dev, heci_hdr); + DBG("end heci_bh_read_bus_message.\n"); + } else if (heci_hdr->host_addr == + dev->legacy_file_ext.host_client_id + && HECI_FILE_CONNECTED == + dev->legacy_file_ext.state + && dev->legacy_state == HECI_LEGACY_READING) { + DBG("call heci_bh_read_legacy_message.\n"); + DBG("heci_hdr->length =%d\n", heci_hdr->length); + ret = heci_bh_read_pthi_message(cmpl_list, dev, heci_hdr); + if (ret != ESUCCESS) + goto end; + } else { + DBG("call heci_bh_read_client_message.\n"); + ret = heci_bh_read_client_message(cmpl_list, dev, heci_hdr); + if (ret != ESUCCESS) + goto end; + } + + /* reset the number of slots and header */ + *slots = count_full_read_slots(dev); + dev->rd_msg_hdr = 0; + + if (*slots == -ESLOTS_OVERFLOW) { /* overflow - reset */ + DBG("reseting due to slots overflow\n"); + /* set the event since message has been read */ + ret = -ERANGE; + goto end; + } +end: + + return ret; + +} + + +/** + * heci_bh_read_bus_message - bottom half read routine after ISR to + * handle the read bus message cmd processing. + * + * @complete_list - An instance of our list structure + * @dev - Device object for our driver + * @buffer - message buffer will be filled + * @heci_hdr - header of bus message + * + * @return : + * none; + */ +void heci_bh_read_bus_message(struct iamt_heci_device *dev, + struct heci_msg_hdr *heci_hdr) +{ + struct heci_bus_message *heci_msg; + struct hbm_host_version_response *version_res; + struct hbm_client_connect_response *connect_res; + struct hbm_client_connect_response *disconnect_res; + struct hbm_flow_control *flow_control; + struct hbm_props_response *props_res; + struct hbm_host_enum_response *enum_res; + struct hbm_client_disconnect_request *disconnect_req; + struct hbm_host_stop_request *h_stop_req; + int i; + unsigned char *buffer; + buffer = NULL; + /* read the message to our buffer */ + buffer = (unsigned char *) dev->rd_msg_buf; + BUG_ON(heci_hdr->length >= sizeof(dev->rd_msg_buf)); + heci_read_slots(dev, buffer, heci_hdr->length); + heci_msg = (struct heci_bus_message *) buffer; + + switch (*(__u8 *) heci_msg) { + case HOST_START_RES_CMD: + version_res = (struct hbm_host_version_response *) heci_msg; + if (version_res->host_version_supported) { + dev->version.major_version = HBM_MAJOR_VERSION; + dev->version.minor_version = HBM_MINOR_VERSION; + } else { + dev->version = version_res->me_max_version; + } + dev->recvd_msg = TRUE; + DBG("host start response message received.\n"); + break; + + case CLIENT_CONNECT_RES_CMD: + connect_res = + (struct hbm_client_connect_response *) heci_msg; + heci_client_connect_response(dev, connect_res); + DBG("client connect response message received.\n"); + wake_up(&dev->wait_recvd_msg); + break; + + case CLIENT_DISCONNECT_RES_CMD: + disconnect_res = + (struct hbm_client_connect_response *) heci_msg; + heci_client_disconnect_response(dev, disconnect_res); + DBG("client disconnect response message received.\n"); + wake_up(&dev->wait_recvd_msg); + break; + + case FLOW_CONTROL_CMD: + flow_control = (struct hbm_flow_control *) heci_msg; + heci_client_flow_control_response(dev, flow_control); + DBG("client flow control response message received.\n"); + break; + case HOST_CLIENT_PROPERTEIS_RES_CMD: + props_res = (struct hbm_props_response *) heci_msg; + if (props_res->status != 0) { + BUG_ON(1); + break; + } + for (i = 0; i < dev->num_heci_me_clients; i++) { + if (dev->me_clients[i].client_id == + props_res->address) { + dev->me_clients[i].props = + props_res->client_properties; + break; + } + + } + dev->recvd_msg = TRUE; + break; + case HOST_ENUM_RES_CMD: + enum_res = (struct hbm_host_enum_response *) heci_msg; + memcpy(dev->heci_me_clients, enum_res->valid_addresses, 32); + dev->recvd_msg = TRUE; + break; + case HOST_STOP_RES_CMD: + dev->heci_state = HECI_DISABLED; + DBG("Reseting becase of FW stop response\n"); + heci_reset(dev, TRUE); + break; + case CLIENT_DISCONNECT_REQ_CMD: + /* search for client */ + disconnect_req = + (struct hbm_client_disconnect_request *) heci_msg; + heci_client_disconnect_request(dev, disconnect_req); + break; + case ME_STOP_REQ_CMD: + /* prepare stop request */ + heci_hdr = (struct heci_msg_hdr *) & dev->ext_msg_buf[0]; + heci_hdr->host_addr = 0; + heci_hdr->me_addr = 0; + heci_hdr->length = sizeof(struct hbm_host_stop_request); + heci_hdr->msg_complete = 1; + heci_hdr->reserved = 0; + h_stop_req = + (struct hbm_host_stop_request *) & dev->ext_msg_buf[1]; + memset(h_stop_req, 0, sizeof(struct hbm_host_stop_request)); + h_stop_req->cmd.cmd = HOST_STOP_REQ_CMD; + h_stop_req->reason = DRIVER_STOP_REQUEST; + h_stop_req->reserved[0] = 0; + h_stop_req->reserved[1] = 0; + dev->extra_write_index = 2; + break; + + default: + BUG_ON(1); + break; + + } + + return; + +} + +/** + * heci_bh_read_legacy_message - bottom half read routine after ISR to + * handle the read legacy message data processing. + * + * @complete_list - An instance of our list structure + * @dev - Device object for our driver + * @buffer - message buffer will be filled + * @heci_hdr - header of legacy message + * + * @return : + * 0 on success, + * negative on failure. + */ +int heci_bh_read_pthi_message(struct io_heci_list *complete_list, + struct iamt_heci_device *dev, + struct heci_msg_hdr *heci_hdr) +{ + struct heci_file_private *file_ext = NULL; + struct heci_cb_private *priv_cb = NULL; + int rets = ESUCCESS; + unsigned char *buffer = NULL; + + BUG_ON(heci_hdr->me_addr != dev->legacy_file_ext.me_client_id); + BUG_ON(dev->legacy_state != HECI_LEGACY_READING); + + buffer = (unsigned char *) (dev->legacy_msg_buf + + dev->legacy_msg_buf_index); + BUG_ON(sizeof(dev->legacy_msg_buf) < + (dev->legacy_msg_buf_index + heci_hdr->length)); + + heci_read_slots(dev, buffer, heci_hdr->length); + + dev->legacy_msg_buf_index += heci_hdr->length; + + if (heci_hdr->msg_complete) { + DBG("pthi_message_buffer_index=%d\n", heci_hdr->length); + DBG("completed pthi read.\n "); + if (!dev->legacy_current_cb) + return -ENODEV; + priv_cb = dev->legacy_current_cb; + dev->legacy_current_cb = NULL; + file_ext = (struct heci_file_private *)priv_cb->file_private; + if (!file_ext) + return -ENODEV; + dev->legacy_stall_timer = 0; + priv_cb->information = dev->legacy_msg_buf_index; + priv_cb->read_time = get_seconds(); + if (dev->legacy_ioctl && file_ext == &dev->legacy_file_ext) { + /* found the legacy cb */ + DBG("complete the pthi read cb.\n "); + if (&dev->legacy_file_ext) { + DBG("add the pthi read cb to complete.\n "); + list_add_tail(&priv_cb->cb_list, + &complete_list->heci_cb.cb_list); + + } + } + } + return rets; + +} + +static int _heci_bh_state_ok(struct heci_file_private *file_ext, + struct heci_msg_hdr *heci_hdr) +{ + return ((file_ext->host_client_id == heci_hdr->host_addr) + && (file_ext->me_client_id == heci_hdr->me_addr) + && (file_ext->state == HECI_FILE_CONNECTED) + && (HECI_READ_COMPLETE != file_ext->reading_state)); +} + +/** + * heci_bh_read_client_message - bottom half read routine after ISR to + * handle the read heci client message data processing. + * + * @complete_list - An instance of our list structure + * @dev - Device object for our driver + * @buffer - message buffer will be filled + * @heci_hdr - header of heci client message + * + * @return : + * 0 on success, + * negative on failure. + */ +int heci_bh_read_client_message(struct io_heci_list *complete_list, + struct iamt_heci_device *dev, + struct heci_msg_hdr *heci_hdr) +{ + struct heci_file_private *file_ext = NULL; + struct heci_cb_private *priv_cb_pos = NULL, *priv_cb_next = NULL; + unsigned char *buffer = NULL; + + DBG("Start client msg \n"); + if (!(dev->read_list.status == ESUCCESS + && !list_empty(&dev->read_list.heci_cb.cb_list))) + goto quit; + + list_for_each_entry_safe(priv_cb_pos, priv_cb_next, + &dev->read_list.heci_cb.cb_list, cb_list){ + file_ext = (struct heci_file_private *) + priv_cb_pos->file_private; + if (_heci_bh_state_ok(file_ext, heci_hdr)) { + spin_lock(&file_ext->read_io_lock); + file_ext->reading_state = HECI_READING; + buffer = (unsigned char *) + (priv_cb_pos->response_buffer.data + + priv_cb_pos->information); + BUG_ON(priv_cb_pos->response_buffer.size < + heci_hdr->length + + priv_cb_pos->information); + + if (priv_cb_pos->response_buffer.size < + heci_hdr->length + + priv_cb_pos->information) { + DBG(" message overflow.\n"); + list_del(&priv_cb_pos->cb_list); + spin_unlock(&file_ext->read_io_lock); + return -ENOMEM; + } + if (buffer) + heci_read_slots(dev, buffer, + heci_hdr->length); + priv_cb_pos->information += heci_hdr->length; + if (heci_hdr->msg_complete) { + file_ext->status = ESUCCESS; + list_del(&priv_cb_pos->cb_list); + spin_unlock(&file_ext->read_io_lock); + DBG("completed read host client = %d," + "ME client = %d, " + "data length = %lu\n", + file_ext->host_client_id, + file_ext->me_client_id, + priv_cb_pos->information); + + *(priv_cb_pos->response_buffer.data + + priv_cb_pos->information) = '\0'; + DBG("priv_cb_pos->res_buffer - %s\n", + priv_cb_pos->response_buffer.data); + list_add_tail(&priv_cb_pos->cb_list, + &complete_list->heci_cb.cb_list); + } else { + spin_unlock(&file_ext->read_io_lock); + } + + break; + } + + } + +quit: + DBG("Message read\n"); + if (!buffer) { + heci_read_slots(dev, (unsigned char *) dev->rd_msg_buf, + heci_hdr->length); + DBG("discarding message, header=%08x.\n", + *(__u32 *) dev->rd_msg_buf); + } + + return ESUCCESS; +} + +/** + * _heci_bh_legacy_read: prepare to read legacy data. + * @dev: device object. + * @slots: free slotsl. + * @return : + * 0, OK; otherwise, error. + */ +static int _heci_bh_legacy_read(struct iamt_heci_device *dev, __s32 *slots) +{ + + if (((*slots) * sizeof(__u32)) >= (sizeof(struct heci_msg_hdr) + + sizeof(struct hbm_flow_control))) { + *slots -= (sizeof(struct heci_msg_hdr) + + sizeof(struct hbm_flow_control) + 3) / 4; + if (!heci_send_flow_control (dev, &dev->legacy_file_ext)) { + DBG("legacy flow control failed\n"); + } else { + DBG("legacy flow control success\n"); + dev->legacy_state = HECI_LEGACY_READING; + dev->legacy_flow_control_pending = FALSE; + dev->legacy_msg_buf_index = 0; + dev->legacy_msg_buf_size = 0; + dev->legacy_stall_timer = LEGACY_STALL_TIMER; + dev->host_buffer_is_empty = host_buffer_is_empty(dev); + } + return ESUCCESS; + } else + return -ECOMPLETE_MESSAGE; +} + +/** + * _heci_bh_close: process close related operation. + * @dev: device object. + * @slots: free slotsl. + * @priv_cb_pos: callback block. + * @file_ext: file extension. + * @cmpl_list: complete list. + * + * @return : + * 0, OK; otherwise, error. + */ +static int _heci_bh_close(struct iamt_heci_device *dev, __s32 *slots, + struct heci_cb_private *priv_cb_pos, + struct heci_file_private *file_ext, + struct io_heci_list *cmpl_list) +{ + if ((*slots * sizeof(__u32)) >= (sizeof(struct heci_msg_hdr) + + sizeof(struct hbm_client_disconnect_request))) { + *slots -= (sizeof(struct heci_msg_hdr) + + sizeof(struct hbm_client_disconnect_request) + 3) / 4; + + if (!heci_disconnect(dev, file_ext)) { + file_ext->status = ESUCCESS; + priv_cb_pos->information = 0; + list_del(&priv_cb_pos->cb_list); + list_add_tail(&priv_cb_pos->cb_list, + &cmpl_list->heci_cb.cb_list); + return -ECOMPLETE_MESSAGE; + } else { + file_ext->state = HECI_FILE_DISCONNECTING; + file_ext->status = ESUCCESS; + priv_cb_pos->information = 0; + list_del(&priv_cb_pos->cb_list); + list_add_tail(&priv_cb_pos->cb_list, + &dev->ctrl_rd_list.heci_cb.cb_list); + file_ext->timer_count = CONNECT_TIMEOUT; + } + } else { + /* return the cancel routine */ + return -ECORRUPTED_MESSAGE_HEADER; + } + + return ESUCCESS; +} + +/** + * _heci_hb_close: process read related operation. + * @dev: device object. + * @slots: free slotsl. + * @priv_cb_pos: callback block. + * @file_ext: file extension. + * @cmpl_list: complete list. + * + * @return : + * 0, OK; otherwise, error. + */ +static int _heci_bh_read(struct iamt_heci_device *dev, __s32 *slots, + struct heci_cb_private *priv_cb_pos, + struct heci_file_private *file_ext, + struct io_heci_list *cmpl_list) +{ + if ((*slots * sizeof(__u32)) >= (sizeof(struct heci_msg_hdr) + + sizeof(struct hbm_flow_control))) { + *slots -= (sizeof(struct heci_msg_hdr) + + sizeof(struct hbm_flow_control) + 3) / 4; + if (!heci_send_flow_control(dev, file_ext)) { + file_ext->status = -ENODEV; + priv_cb_pos->information = 0; + list_del(&priv_cb_pos->cb_list); + list_add_tail(&priv_cb_pos->cb_list, + &cmpl_list->heci_cb.cb_list); + return -ENODEV; + } else { + list_del(&priv_cb_pos->cb_list); + list_add_tail(&priv_cb_pos->cb_list, + &dev->read_list.heci_cb.cb_list); + } + } else { + /* return the cancel routine */ + list_del(&priv_cb_pos->cb_list); + return -ECORRUPTED_MESSAGE_HEADER; + } + + return ESUCCESS; +} + + +/** + * _heci_bh_ioctl: process ioctl related operation. + * @dev: device object. + * @slots: free slotsl. + * @priv_cb_pos: callback block. + * @file_ext: file extension. + * @cmpl_list: complete list. + * + * @return : + * 0, OK; otherwise, error. + */ +static int _heci_bh_ioctl(struct iamt_heci_device *dev, __s32 *slots, + struct heci_cb_private *priv_cb_pos, + struct heci_file_private *file_ext, + struct io_heci_list *cmpl_list) +{ + if ((*slots * sizeof(__u32)) >= (sizeof(struct heci_msg_hdr) + + sizeof(struct hbm_client_connect_request))) { + file_ext->state = HECI_FILE_CONNECTING; + *slots -= (sizeof(struct heci_msg_hdr) + + sizeof(struct hbm_client_connect_request) + 3) / 4; + if (!heci_connect(dev, file_ext)) { + file_ext->status = -ENODEV; + priv_cb_pos->information = 0; + list_del(&priv_cb_pos->cb_list); + return -ENODEV; + } else { + list_del(&priv_cb_pos->cb_list); + list_add_tail(&priv_cb_pos->cb_list, + &dev->ctrl_rd_list.heci_cb.cb_list); + file_ext->timer_count = CONNECT_TIMEOUT; + } + } else { + /* return the cancel routine */ + list_del(&priv_cb_pos->cb_list); + return -ECORRUPTED_MESSAGE_HEADER; + } + + return ESUCCESS; +} + +/** + * _heci_bh_cmpl: process completed and no-legacy operation. + * @dev: device object. + * @slots: free slotsl. + * @priv_cb_pos: callback block. + * @file_ext: file extension. + * @cmpl_list: complete list. + * + * @return : + * 0, OK; otherwise, error. + */ +static int _heci_bh_cmpl(struct iamt_heci_device *dev, __s32 *slots, + struct heci_cb_private *priv_cb_pos, + struct heci_file_private *file_ext, + struct io_heci_list *cmpl_list) +{ + struct heci_msg_hdr *heci_hdr = NULL; + + if ((*slots * sizeof(__u32)) >= (sizeof(struct heci_msg_hdr) + + (priv_cb_pos->request_buffer.size - + priv_cb_pos->information))) { + heci_hdr = (struct heci_msg_hdr *) & dev->wr_msg_buf[0]; + heci_hdr->host_addr = file_ext->host_client_id; + heci_hdr->me_addr = file_ext->me_client_id; + heci_hdr->length = ((priv_cb_pos->request_buffer.size) - + (priv_cb_pos->information)); + heci_hdr->msg_complete = 1; + heci_hdr->reserved = 0; + DBG("priv_cb_pos->request_buffer.size =%d" + "heci_hdr->msg_complete= %d\n", + priv_cb_pos->request_buffer.size, + heci_hdr->msg_complete); + DBG("priv_cb_pos->information =%lu\n", + priv_cb_pos->information); + DBG("heci_hdr->length =%d\n", + heci_hdr->length); + *slots -= (sizeof(struct heci_msg_hdr) + + heci_hdr->length + 3) / 4; + if (!heci_write_message (dev, heci_hdr, + (unsigned char *) + (priv_cb_pos->request_buffer.data + + priv_cb_pos->information), + heci_hdr->length)) { + file_ext->status = -ENODEV; + list_del(&priv_cb_pos->cb_list); + list_add_tail(&priv_cb_pos->cb_list, + &cmpl_list->heci_cb.cb_list); + return -ENODEV; + } else { + flow_ctrl_reduce(dev, file_ext); + file_ext->status = ESUCCESS; + priv_cb_pos->information += heci_hdr->length; + list_del(&priv_cb_pos->cb_list); + list_add_tail(&priv_cb_pos->cb_list, + &dev->write_waiting_list.heci_cb.cb_list); + } + } else if (*slots == ((dev->host_hw_state & H_CBD) >> 24)) { + /* buffer is still empty */ + heci_hdr = (struct heci_msg_hdr *) & dev->wr_msg_buf[0]; + heci_hdr->host_addr = file_ext->host_client_id; + heci_hdr->me_addr = file_ext->me_client_id; + heci_hdr->length = + (*slots * sizeof(__u32)) - sizeof(struct heci_msg_hdr); + heci_hdr->msg_complete = 0; + heci_hdr->reserved = 0; + + (*slots) -= (sizeof(struct heci_msg_hdr) + + heci_hdr->length + 3) / 4; + if (!heci_write_message(dev, heci_hdr, + (unsigned char *) + (priv_cb_pos->request_buffer.data + + priv_cb_pos->information), + heci_hdr->length)) { + file_ext->status = -ENODEV; + list_del(&priv_cb_pos->cb_list); + list_add_tail(&priv_cb_pos->cb_list, + &cmpl_list->heci_cb.cb_list); + return -ENODEV; + } else { + priv_cb_pos->information += heci_hdr->length; + DBG("priv_cb_pos->request_buffer.size =%d" + " heci_hdr->msg_complete= %d\n", + priv_cb_pos->request_buffer.size, + heci_hdr->msg_complete); + DBG("priv_cb_pos->information =%lu\n", + priv_cb_pos->information); + DBG("heci_hdr->length =%d\n", heci_hdr->length); + } + return -ECOMPLETE_MESSAGE; + } else { + return -ECORRUPTED_MESSAGE_HEADER; + } + + return ESUCCESS; +} + +/** + * _heci_bh_cmpl_legacy: process completed legacy operation. + * @dev: device object. + * @slots: free slotsl. + * @priv_cb_pos: callback block. + * @file_ext: file extension. + * @cmpl_list: complete list. + * + * @return : + * 0, OK; otherwise, error. + */ +static int _heci_bh_cmpl_legacy(struct iamt_heci_device *dev, __s32 *slots, + struct heci_cb_private *priv_cb_pos, + struct heci_file_private *file_ext, + struct io_heci_list *cmpl_list) +{ + struct heci_msg_hdr *heci_hdr = NULL; + + if ((*slots * sizeof(__u32)) >= (sizeof(struct heci_msg_hdr) + + dev->legacy_msg_buf_size - + dev->legacy_msg_buf_index)) { + heci_hdr = (struct heci_msg_hdr *) & dev->wr_msg_buf[0]; + heci_hdr->host_addr = file_ext->host_client_id; + heci_hdr->me_addr = file_ext->me_client_id; + heci_hdr->length = dev->legacy_msg_buf_size - + dev->legacy_msg_buf_index; + heci_hdr->msg_complete = 1; + heci_hdr->reserved = 0; + + *slots -= (sizeof(struct heci_msg_hdr) + + heci_hdr->length + 3) / 4; + + if (!heci_write_message (dev, heci_hdr, + (dev->legacy_msg_buf + + dev->legacy_msg_buf_index), + heci_hdr->length)) { + dev->legacy_state = HECI_LEGACY_IDLE; + file_ext->status = -ENODEV; + list_del(&priv_cb_pos->cb_list); + return -ENODEV; + } else { + flow_ctrl_reduce(dev, file_ext); + dev->legacy_msg_buf_index += heci_hdr->length; + list_del(&priv_cb_pos->cb_list); + priv_cb_pos->information = dev->legacy_msg_buf_index; + file_ext->status = ESUCCESS; + dev->legacy_state = HECI_LEGACY_FLOW_CONTROL; + dev->legacy_flow_control_pending = TRUE; + /* save legacy cb sent to pthi client */ + dev->legacy_current_cb = priv_cb_pos; + list_add_tail(&priv_cb_pos->cb_list, + &dev->write_waiting_list.heci_cb.cb_list); + + } + } else if (*slots == ((dev->host_hw_state & H_CBD) >> 24)) { + /* buffer is still empty */ + heci_hdr = (struct heci_msg_hdr *) & dev->wr_msg_buf[0]; + heci_hdr->host_addr = file_ext->host_client_id; + heci_hdr->me_addr = file_ext->me_client_id; + heci_hdr->length = + (*slots * sizeof(__u32)) - sizeof(struct heci_msg_hdr); + heci_hdr->msg_complete = 0; + heci_hdr->reserved = 0; + + *slots -= (sizeof(struct heci_msg_hdr) + + heci_hdr->length + 3) / 4; + + if (!heci_write_message (dev, heci_hdr, + (dev->legacy_msg_buf + + dev->legacy_msg_buf_index), + heci_hdr->length)) { + file_ext->status = -ENODEV; + list_del(&priv_cb_pos->cb_list); + } else { + dev->legacy_msg_buf_index += heci_hdr->length; + } + return -ECOMPLETE_MESSAGE; + } else { + return -ECORRUPTED_MESSAGE_HEADER; + } + + return ESUCCESS; +} + +/** + * heci_bh_write_handler - bottom half write routine after + * ISR to handle the write processing. + * + * @complete_list - An instance of our list structure + * @dev - Device object for our driver + * @slots - slots to write. + * @return : + * 0 on success, + * negative on failure. + */ +int heci_bh_write_handler(struct io_heci_list *cmpl_list, + struct iamt_heci_device *dev, + __s32 *slots) +{ + + struct heci_file_private *file_ext = NULL; + struct heci_cb_private *priv_cb_pos = NULL, *priv_cb_next = NULL; + struct io_heci_list *list; + int ret; + + if (!host_buffer_is_empty(dev)) { + DBG("host buffer is not empty.\n"); + return ESUCCESS; + } + dev->write_hang = -1; + *slots = count_empty_write_slots(dev); + /* complete all waiting for write CB */ + DBG("complete all waiting for write CB.\n"); + + list = &dev->write_waiting_list; + if (list->status == ESUCCESS + && !list_empty(&list->heci_cb.cb_list)) { + list_for_each_entry_safe(priv_cb_pos, priv_cb_next, + &list->heci_cb.cb_list, cb_list){ + file_ext = (struct heci_file_private *) + priv_cb_pos->file_private; + file_ext->status = ESUCCESS; + list_del(&priv_cb_pos->cb_list); + if (HECI_WRITING == file_ext->writing_state && + (priv_cb_pos->major_file_operations == + HECI_WRITING) && + file_ext != &dev->legacy_file_ext) { + DBG("HECI WRITE COMPLETE\n"); + file_ext->writing_state = HECI_WRITE_COMPLETE; + list_add_tail(&priv_cb_pos->cb_list, + &cmpl_list->heci_cb.cb_list); + } + if (file_ext == &dev->legacy_file_ext) { + DBG("check legacy flow control\n"); + if (dev->legacy_flow_control_pending) { + ret = _heci_bh_legacy_read(dev, slots); + if (ret != ESUCCESS) + return ret; + } + } + + } + } + + if (dev->stop && !dev->wd_pending) { + dev->wd_stoped = TRUE; + wake_up_interruptible(&dev->wait_stop_wd); + return ESUCCESS; + } + + if (dev->extra_write_index != 0) { + DBG("extra_write_index =%d\n", dev->extra_write_index); + heci_write_message(dev, + (struct heci_msg_hdr *) &dev->ext_msg_buf[0], + (unsigned char *) &dev->ext_msg_buf[1], + (dev->extra_write_index - 1) * sizeof(__u32)); + *slots -= dev->extra_write_index; + dev->extra_write_index = 0; + } + if (dev->heci_state == HECI_ENABLED) { + if (dev->wd_pending + && flow_ctrl_creds(dev, &dev->wd_file_ext)) { + if (!heci_send_wd(dev)) + DBG("Wd send failed\n"); + else + flow_ctrl_reduce(dev, &dev->wd_file_ext); + dev->wd_pending = 0; + + if (dev->wd_timeout != 0) { + *slots -= (sizeof(struct heci_msg_hdr) + + HECI_START_WD_DATA_SIZE + 3) / 4; + dev->wd_due_counter = 2; + } else { + *slots -= (sizeof(struct heci_msg_hdr) + + HECI_WD_PARAMS_SIZE + 3) / 4; + dev->wd_due_counter = 0; + } + + } + } + if (dev->stop) + return ~ENODEV; + + /* complete control write list CB */ + if (dev->ctrl_wr_list.status == ESUCCESS) { + /* complete control write list CB */ + DBG("complete control write list CB\n "); + list_for_each_entry_safe(priv_cb_pos, priv_cb_next, + &dev->ctrl_wr_list.heci_cb.cb_list, cb_list){ + file_ext = (struct heci_file_private *) + priv_cb_pos->file_private; + if (!file_ext) { + list_del(&priv_cb_pos->cb_list); + return -ENODEV; + } + switch (priv_cb_pos->major_file_operations) { + case HECI_CLOSE: + /* send disconnect message */ + ret = _heci_bh_close(dev, slots, + priv_cb_pos, + file_ext, cmpl_list); + if (ret != ESUCCESS) + return ret; + break; + case HECI_READ: + /* send flow control message */ + ret = _heci_bh_read(dev, slots, + priv_cb_pos, + file_ext, cmpl_list); + if (ret != ESUCCESS) + return ret; + break; + case HECI_IOCTL: + /* connect message */ + if (!other_client_is_connecting(dev, + file_ext)) + continue; + ret = _heci_bh_ioctl(dev, slots, + priv_cb_pos, + file_ext, cmpl_list); + if (ret != ESUCCESS) + return ret; + break; + + default: + BUG_ON(1); + } + + } + } + /* complete write list CB */ + if (dev->write_list.status == ESUCCESS + && !list_empty(&dev->write_list.heci_cb.cb_list)) { + DBG("complete write list CB \n"); + list_for_each_entry_safe(priv_cb_pos, priv_cb_next, + &dev->write_list.heci_cb.cb_list, cb_list){ + file_ext = (struct heci_file_private *) + priv_cb_pos->file_private; + + if ((file_ext != NULL) && + (file_ext != &dev->legacy_file_ext)) { + if (!flow_ctrl_creds(dev, file_ext)) { + DBG("No flow control credentials" + "for client %d, not sending\n", + file_ext->host_client_id); + continue; + } + ret = _heci_bh_cmpl(dev, slots, + priv_cb_pos, + file_ext, cmpl_list); + if (ret != ESUCCESS) + return ret; + } else if (file_ext == &dev->legacy_file_ext) { + /* LEGACY IOCTL */ + DBG("complete pthi write cb\n"); + if (!flow_ctrl_creds(dev, file_ext)) { + DBG("No flow control credentials" + "for pthi client %d\n", + file_ext->host_client_id); + continue; + } + ret = _heci_bh_cmpl_legacy(dev, slots, + priv_cb_pos, + file_ext, cmpl_list); + if (ret != ESUCCESS) + return ret; + } + + } + } + return ESUCCESS; +} + + +/** + * is_treat_specially_client - check if the message belong + * to the file extension . + * @file_ext -extension of the file object + * @connect_res -connect response bus message + * @dev -Device object for our driver + * + * @return : + * TRUE if empty + * FALSE - otherwise. + */ +int is_treat_specially_client(struct heci_file_private *file_ext, + struct hbm_client_connect_response *rs) +{ + int ret = FALSE; + + if ((file_ext->host_client_id == rs->host_addr) && + (file_ext->me_client_id == rs->me_addr)) { + if (rs->status == 0) { + DBG("client connect status = 0x%08x.\n", rs->status); + file_ext->state = HECI_FILE_CONNECTED; + file_ext->status = ESUCCESS; + } else { + DBG("client connect status = 0x%08x.\n", rs->status); + file_ext->state = HECI_FILE_DISCONNECTED; + file_ext->status = -ENODEV; + } + ret = TRUE; + } + DBG("client state = %d.\n", file_ext->state); + return ret; + +} + +/** + * heci_client_connect_response - connect response bh routine + * + * @dev -Device object for our driver + * @connect_res -connect response bus message + * @complete_list - An instance of our list structure + * + * @return : + * none; + */ +void heci_client_connect_response(struct iamt_heci_device *dev, + struct hbm_client_connect_response *rs) +{ + + struct heci_file_private *file_ext = NULL; + struct heci_cb_private *priv_cb_pos = NULL, *priv_cb_next = NULL; + + /* if WD or legacy client treat specially */ + + if ((is_treat_specially_client(&(dev->wd_file_ext), rs)) || + (is_treat_specially_client(&(dev->legacy_file_ext), rs))) + return; + + if (dev->ctrl_rd_list.status == ESUCCESS + && !list_empty(&dev->ctrl_rd_list.heci_cb.cb_list)) { + list_for_each_entry_safe(priv_cb_pos, priv_cb_next, + &dev->ctrl_rd_list.heci_cb.cb_list, cb_list) { + file_ext = + (struct heci_file_private *) + priv_cb_pos->file_private; + if (!file_ext) { + list_del(&priv_cb_pos->cb_list); + return; + } + if (HECI_IOCTL == priv_cb_pos->major_file_operations) { + + if (is_treat_specially_client (file_ext, rs)) { + list_del(&priv_cb_pos->cb_list); + file_ext->status = ESUCCESS; + file_ext->timer_count = 0; + break; + } + } + } + } + return; +} + +/** + * heci_client_disconnect_response - disconnect response bh routine + * + * @dev -Device object for our driver + * @disconnect_res -disconnect response bus message + * @complete_list - An instance of our list structure + * + * @return : + * none; + */ +void heci_client_disconnect_response(struct iamt_heci_device *dev, + struct hbm_client_connect_response *rs) +{ + struct heci_file_private *file_ext = NULL; + struct heci_cb_private *priv_cb_pos = NULL, *priv_cb_next = NULL; + + if (dev->ctrl_rd_list.status == ESUCCESS + && !list_empty(&dev->ctrl_rd_list.heci_cb.cb_list)) { + list_for_each_entry_safe(priv_cb_pos, priv_cb_next, + &dev->ctrl_rd_list.heci_cb.cb_list, cb_list) { + file_ext = + (struct heci_file_private *) + priv_cb_pos->file_private; + + if (!file_ext) { + list_del(&priv_cb_pos->cb_list); + return; + } + + DBG("list_for_each_entry_safe in ctrl_rd_list.\n"); + if ((file_ext->host_client_id == rs->host_addr) && + (file_ext->me_client_id == rs->me_addr)) { + + list_del(&priv_cb_pos->cb_list); + if (rs->status == 0) + file_ext->state = HECI_FILE_DISCONNECTED; + file_ext->status = ESUCCESS; + file_ext->timer_count = 0; + break; + } + } + } + return; +} + +/** + * same_flow_addr: tell they have same address. + * @file: file extension. + * @flow: flow control. + * @return : + * 1, same; 0,not. + */ +static int same_flow_addr(struct heci_file_private *file, + struct hbm_flow_control *flow) +{ + if ((file->host_client_id == flow->host_addr) + && (file->me_client_id == flow->me_addr)) + return 1; + return 0; +} + +/** + * add_single_flow_creds: add single buffer credentials. + * @file: file extension. + * @flow: flow control. + * @return : + * none. + */ +static void add_single_flow_creds(struct iamt_heci_device *dev, + struct hbm_flow_control *flow) +{ + struct heci_me_client *client = NULL; + int i; + + for (i = 0; i < dev->num_heci_me_clients; i++) { + client = &dev->me_clients[i]; + if (flow->me_addr == client->client_id) { + if (client->props.single_recv_buf != 0) { + client->flow_ctrl_creds++; + DBG("rece flow ctrl msg ME %d (single).\n", + flow->me_addr); + DBG("flow control credentials=%d.\n", + client->flow_ctrl_creds); + } else { + BUG_ON(1); /* error in flow control */ + } + } + } +} +/** + * heci_client_flow_control_response - flow control response bh routine + * + * @dev -Device object for our driver + * @flow_control -flow control response bus message + * + * @return : + * none; + */ +void heci_client_flow_control_response(struct iamt_heci_device *dev, + struct hbm_flow_control *flow_control) +{ + struct heci_file_private *file_pos = NULL; + struct heci_file_private *file_next = NULL; + + if (flow_control->host_addr == 0) { /* single receive buffer */ + add_single_flow_creds(dev, flow_control); + } else { /* normal connection */ + list_for_each_entry_safe(file_pos, file_next, + &dev->file_list, link) { + DBG("list_for_each_entry_safe in file_list\n"); + + DBG("file_ext of host client %d ME client %d.\n", + file_pos->host_client_id, + file_pos->me_client_id); + DBG("flow ctrl msg for host %d ME %d.\n", + flow_control->host_addr, + flow_control->me_addr); + if (same_flow_addr(file_pos, flow_control)) { + DBG("recv ctrl msg for host %d ME %d.\n", + flow_control->host_addr, + flow_control->me_addr); + file_pos->flow_ctrl_creds++; + DBG("flow control credentials=%d.\n", + file_pos->flow_ctrl_creds); + break; + } + } + } + return; +} + +/** + * same_disconn_addr: tell they have same address + * @file: file extension + * @disconn: disconnection request. + * @return : + * 1, same; 0,not. + */ +static int same_disconn_addr(struct heci_file_private *file, + struct hbm_client_disconnect_request *disconn) +{ + if ((file->host_client_id == disconn->host_addr) + && (file->me_client_id == disconn->me_addr)) + return 1; + return 0; +} + +/** + * heci_client_disconnect_request - disconnect request bh routine + * + * @dev -Device object for our driver + * @disconnect_req -disconnect request bus message + * + * @return : + * none; + */ +void heci_client_disconnect_request(struct iamt_heci_device *dev, + struct hbm_client_disconnect_request *disconnect_req) +{ + struct heci_msg_hdr *heci_hdr; + struct hbm_client_connect_response *disconnect_res; + struct heci_file_private *file_pos = NULL; + struct heci_file_private *file_next = NULL; + + list_for_each_entry_safe(file_pos, file_next, &dev->file_list, link) { + if (same_disconn_addr(file_pos, disconnect_req)) { + DBG("disconn request host client %d ME client %d.\n", + disconnect_req->host_addr, + disconnect_req->me_addr); + file_pos->state = HECI_FILE_DISCONNECTED; + file_pos->timer_count = 0; + if (file_pos == &dev->wd_file_ext) { + dev->wd_due_counter = 0; + dev->wd_pending = FALSE; + } else if (file_pos == &dev->legacy_file_ext) { + dev->legacy_timer = 0; + } + + /* prepare disconnect response */ + heci_hdr = + (struct heci_msg_hdr *) & dev->ext_msg_buf[0]; + heci_hdr->host_addr = 0; + heci_hdr->me_addr = 0; + heci_hdr->length = + sizeof(struct hbm_client_connect_response); + heci_hdr->msg_complete = 1; + heci_hdr->reserved = 0; + + disconnect_res = + (struct hbm_client_connect_response *) + &dev->ext_msg_buf[1]; + disconnect_res->host_addr = file_pos->host_client_id; + disconnect_res->me_addr = file_pos->me_client_id; + *(__u8 *) (&disconnect_res->cmd) = + CLIENT_DISCONNECT_RES_CMD; + disconnect_res->status = 0; + dev->extra_write_index = 2; + break; + } + } + return; +} + + +/** + * free_legacy: free legacy related memory + * @dev: heci device + * + * @return : + * none; + */ +static void free_legacy(struct iamt_heci_device *dev) +{ + kfree(dev->legacy_current_cb->request_buffer.data); + dev->legacy_current_cb->request_buffer.data = NULL; + kfree(dev->legacy_current_cb->response_buffer.data); + dev->legacy_current_cb->response_buffer.data = NULL; + kfree(dev->legacy_current_cb); +} + +/** + * heci_timer - timer function . + * @data: pointer to the device structure + * + * NOTE: This function is called by timer interrupt work + * @return : + * none; + */ +void heci_wd_timer(unsigned long data) +{ + struct iamt_heci_device *dev = (struct iamt_heci_device *) data; + DBG("send watchdog.\n"); + spin_lock_bh(&dev->device_lock); + if (dev->heci_state != HECI_ENABLED) { + mod_timer(&dev->wd_timer, round_jiffies(jiffies + 2 * HZ)); + spin_unlock_bh(&dev->device_lock); + return; + } + if (dev->wd_file_ext.state != HECI_FILE_CONNECTED) { + mod_timer(&dev->wd_timer, round_jiffies(jiffies + 2 * HZ)); + spin_unlock_bh(&dev->device_lock); + return; + } + /*** Watchdog ***/ + if (dev->wd_due_counter != 0 && FALSE == dev->wd_bypass) { + if (--dev->wd_due_counter == 0) { + if (dev->host_buffer_is_empty && + flow_ctrl_creds(dev, &dev->wd_file_ext)) { + dev->host_buffer_is_empty = FALSE; + + if (!heci_send_wd(dev)) + DBG("Wd send failed\n"); + else + flow_ctrl_reduce(dev, + &dev->wd_file_ext); + if (dev->wd_timeout != 0) + dev->wd_due_counter = 2; + else + dev->wd_due_counter = 0; + } else { + dev->wd_pending = TRUE; + } + } + } + if (dev->legacy_stall_timer != 0) { + if (--dev->legacy_stall_timer == 0) { + DBG("Reseting because of hang to PTHI\n"); + heci_reset(dev, TRUE); + dev->legacy_msg_buf_size = 0; + dev->legacy_msg_buf_index = 0; + dev->legacy_canceled = FALSE; + dev->legacy_ioctl = TRUE; + dev->legacy_state = HECI_LEGACY_IDLE; + dev->legacy_timer = 0; + spin_unlock_bh(&dev->device_lock); + + if (dev->legacy_current_cb) + free_legacy(dev); + + spin_lock_bh(&dev->device_lock); + dev->legacy_file_object = NULL; + dev->legacy_current_cb = NULL; + run_next_legacy_cmd(dev); + } + } + mod_timer(&dev->wd_timer, round_jiffies(jiffies + 2 * HZ)); + spin_unlock_bh(&dev->device_lock); + return; +} diff -uprN -X a/Documentation/dontdiff a/drivers/char/heci/io_heci.c b/drivers/char/heci/io_heci.c --- a/drivers/char/heci/io_heci.c 1969-12-31 19:00:00.000000000 -0500 +++ b/drivers/char/heci/io_heci.c 2007-10-22 11:47:28.000000000 -0400 @@ -0,0 +1,1175 @@ +/* + * Part of Intel(R) Manageability Engine Interface Linux driver + * + * Copyright (c) 2003 - 2007 Intel Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "heci_data_structures.h" +#include "heci.h" +#include "heci_interface.h" +#include "heci_version.h" + + +/** + * same_id - tell if they have same id + * @fe1 -file extension + * @fe2 -file extension + * + * @return : + * 0 on success, + * negative on failure. + */ +static int same_id(struct heci_file_private *fe1, + struct heci_file_private *fe2) +{ + if ((fe1->host_client_id == fe2->host_client_id) + && (fe1->me_client_id == fe2->me_client_id)) { + return 1; + } else { + return 0; + } +} + +/** + * heci_ioctl_get_version - the get driver version IOCTL function + * @dev -Device object for our driver + * @if_num minor number + * @*u_msg pointer to user data struct in user space + * @k_msg data in kernel on the stack + * @file_ext -extension of the file object + * + * @return : + * 0 on success, + * negative on failure. + */ +int heci_ioctl_get_version(struct iamt_heci_device *dev, int if_num, + struct heci_message_data *u_msg, + struct heci_message_data k_msg, + struct heci_file_private *file_ext) +{ + + int rets = ESUCCESS; + struct heci_driver_version *version; + struct heci_message_data res_msg; + res_msg.data = NULL; + + if ((if_num != HECI_MINOR_NUMBER) || (!dev) + || (!file_ext)) + return -ENODEV; + + if (k_msg.size < (sizeof(struct heci_driver_version) - 2)) { + DBG("user buffer less than heci_driver_version.\n"); + return -EMSGSIZE; + } + + res_msg.data = kmalloc(sizeof(struct heci_driver_version), GFP_KERNEL); + if (!res_msg.data) { + DBG("failed allocation response buffer size = %d.\n", + (int) sizeof(struct heci_driver_version)); + return -ENOMEM; + + } + version = (struct heci_driver_version *) res_msg.data; + version->major = MAJOR_VERSION; + version->minor = MINOR_VERSION; + version->hotfix = QUICK_FIX_NUMBER; + if (k_msg.size < sizeof(struct heci_driver_version)) { + res_msg.size = sizeof(struct heci_driver_version) - 2; + } else { + version->build = VER_BUILD; + res_msg.size = sizeof(struct heci_driver_version); + } + rets = file_ext->status; + /* now copy the data to user space */ + if (copy_to_user(k_msg.data, res_msg.data, res_msg.size)) { + rets = -EFAULT; + goto end; + } + if (put_user(res_msg.size, &u_msg->size)) { + rets = -EFAULT; + goto end; + } +end: + kfree(res_msg.data); + return rets; +} + +/** + * heci_ioctl_connect_client - the connect to fw client IOCTL function + * @dev -Device object for our driver + * @if_num minor number + * @*u_msg pointer to user data struct in user space + * @k_msg data in kernel on the stack + * @file_ext -extension of the file object + * + * @return : + * 0 on success, + * negative on failure. + */ +int heci_ioctl_connect_client(struct iamt_heci_device *dev, int if_num, + struct heci_message_data *u_msg, + struct heci_message_data k_msg, + struct file *file) +{ + + int rets = ESUCCESS; + struct heci_message_data req_msg, res_msg; + struct heci_cb_private *priv_cb = NULL; + struct heci_client *client; + struct heci_file_private *file_ext = NULL; + struct heci_file_private *file_pos = NULL; + struct heci_file_private *file_next = NULL; + struct heci_file_private *file_ext_temp = NULL; + + struct heci_cb_private *priv_cb_pos = NULL; + struct heci_cb_private *priv_cb_next = NULL; + long timeout = 15; /*15 second */ + __u8 i; + int err = 0; + res_msg.data = NULL; + req_msg.data = NULL; + + if ((if_num != HECI_MINOR_NUMBER) || (!dev) + || (!file)) + return -ENODEV; + file_ext = file->private_data; + if (!file_ext) + return -ENODEV; + if (k_msg.size != sizeof(struct guid)) { + DBG("user buffer size is not equal to size of struct " + "guid(16).\n"); + return -EMSGSIZE; + } + req_msg.data = kmalloc(sizeof(struct guid), GFP_KERNEL); + res_msg.data = kmalloc(sizeof(struct heci_client), GFP_KERNEL); + + + if (!res_msg.data) { + DBG("failed allocation response buffer size = %d.\n", + (int) sizeof(struct heci_client)); + + kfree(req_msg.data); + req_msg.data = NULL; + goto fail; + + } + if (!req_msg.data) { + DBG("failed allocation request buffer size = %d.\n", + (int) sizeof(struct guid)); + + kfree(res_msg.data); + res_msg.data = NULL; + goto fail; + +fail: + return -ENOMEM; + } + req_msg.size = sizeof(struct guid); + res_msg.size = sizeof(struct heci_client); + if (!k_msg.data) { + rets = -EIO; + goto end; + } + + /* copy the message to kernel space - + * use a pointer already copied into kernel space + */ + if (copy_from_user(req_msg.data, k_msg.data, k_msg.size)) { + rets = -EFAULT; + goto end; + } + /* buffered ioctl cb */ + priv_cb = + kmalloc(sizeof(struct heci_cb_private), GFP_KERNEL); + if (!priv_cb) { + rets = -ENOMEM; + goto end; + } + INIT_LIST_HEAD(&priv_cb->cb_list); + priv_cb->response_buffer.data = res_msg.data; + priv_cb->response_buffer.size = res_msg.size; + priv_cb->request_buffer.data = req_msg.data; + priv_cb->request_buffer.size = req_msg.size; + priv_cb->major_file_operations = HECI_IOCTL; + spin_lock_bh(&dev->device_lock); + if (dev->heci_state != HECI_ENABLED) { + rets = -ENODEV; + spin_unlock_bh(&dev->device_lock); + goto end; + } + if ((file_ext->state != HECI_FILE_INITIALIZING) && + (file_ext->state != HECI_FILE_DISCONNECTED)) { + rets = -EBUSY; + spin_unlock_bh(&dev->device_lock); + goto end; + } + + /* find ME client we're trying to connect to */ + for (i = 0; i < dev->num_heci_me_clients; i++) { + if (0 == memcmp((struct guid *) req_msg.data, + &dev->me_clients[i].props.protocol_name, + sizeof(struct guid))) { + if (dev->me_clients[i].props.fixed_address == 0) { + file_ext->me_client_id = + dev->me_clients[i].client_id; + file_ext->state = + HECI_FILE_CONNECTING; + } + break; + } + } + /* if we're connecting to PTHI client so we will use the exist + * connection + */ + if (0 == memcmp((struct guid *) req_msg.data, &heci_pthi_guid, + sizeof(struct guid))) { + + if (dev->legacy_file_ext.state != HECI_FILE_CONNECTED) { + rets = -ENODEV; + spin_unlock_bh(&dev->device_lock); + goto end; + } + dev->heci_host_clients[file_ext->host_client_id / 8] &= + ~(1 << (file_ext->host_client_id % 8)); + list_for_each_entry_safe(file_pos, + file_next, &dev->file_list, link) { + if (same_id(file_ext, file_pos)) { + DBG("remove file extension node host" + " client = %d, ME client = %d\n", + file_pos->host_client_id, + file_pos->me_client_id); + list_del(&file_pos->link); + } + + } + DBG("free file extension memory\n"); + kfree(file_ext); + file_ext = NULL; + file->private_data = &dev->legacy_file_ext; + client = (struct heci_client *) res_msg.data; + client->max_msg_length = + dev->me_clients[i].props.max_msg_length; + client->protocol_version = + dev->me_clients[i].props.protocol_version; + rets = dev->legacy_file_ext.status; + spin_unlock_bh(&dev->device_lock); + + /* now copy the data to user space */ + if (copy_to_user(k_msg.data, res_msg.data, res_msg.size)) { + rets = -EFAULT; + goto end; + } + if (put_user(res_msg.size, &u_msg->size)) { + rets = -EFAULT; + goto end; + } + goto end; + } + spin_lock(&file_ext->file_lock); + if (file_ext->state != HECI_FILE_CONNECTING) { + rets = -ENODEV; + spin_unlock(&file_ext->file_lock); + spin_unlock_bh(&dev->device_lock); + goto end; + } + spin_unlock(&file_ext->file_lock); + /* prepare the output buffer */ + client = (struct heci_client *) res_msg.data; + client->max_msg_length = + dev->me_clients[i].props.max_msg_length; + client->protocol_version = + dev->me_clients[i].props.protocol_version; + if (dev->host_buffer_is_empty + && !other_client_is_connecting(dev, file_ext)) { + dev->host_buffer_is_empty = FALSE; + if (!heci_connect(dev, file_ext)) { + rets = -ENODEV; + spin_unlock_bh(&dev->device_lock); + goto end; + } else { + file_ext->timer_count = CONNECT_TIMEOUT; + priv_cb->file_private = file_ext; + list_add_tail(&priv_cb->cb_list, + &dev->ctrl_rd_list.heci_cb. + cb_list); + } + + + } else { + priv_cb->file_private = file_ext; + DBG("add connect cb to control write list\n"); + list_add_tail(&priv_cb->cb_list, + &dev->ctrl_wr_list.heci_cb.cb_list); + } + spin_unlock_bh(&dev->device_lock); + err = wait_event_timeout(dev->wait_recvd_msg, + (HECI_FILE_CONNECTED == file_ext->state + || HECI_FILE_DISCONNECTED == file_ext->state), + timeout * HZ); + + if (HECI_FILE_CONNECTED == file_ext->state) { + DBG("successfully to connect to FW client.\n"); + rets = file_ext->status; + /* now copy the data to user space */ + if (copy_to_user(k_msg.data, res_msg.data, res_msg.size)) { + rets = -EFAULT; + goto end; + } + if (put_user(res_msg.size, &u_msg->size)) { + rets = -EFAULT; + goto end; + } + goto end; + } else { + DBG("failed to connect to FW client.file_ext->state = %d\n", + file_ext->state); + if (!err) + DBG("wait_event_interruptible_timeout failed on client" + " connect message fw response message\n"); + + rets = -EFAULT; + goto remove_list; + } + +remove_list: + if (priv_cb) { + spin_lock_bh(&dev->device_lock); + if (dev->ctrl_rd_list.status == ESUCCESS && + !list_empty(&dev->ctrl_rd_list.heci_cb.cb_list)) { + list_for_each_entry_safe(priv_cb_pos, priv_cb_next, + &dev->ctrl_rd_list.heci_cb.cb_list, cb_list) { + file_ext_temp = + (struct heci_file_private *) + priv_cb_pos->file_private; + if (file_ext_temp) { + if (same_id(file_ext, file_ext_temp)) + list_del(&priv_cb_pos->cb_list); + + } + + } + } + if (dev->ctrl_wr_list.status == ESUCCESS && + !list_empty(&dev->ctrl_wr_list.heci_cb.cb_list)) { + list_for_each_entry_safe(priv_cb_pos, priv_cb_next, + &dev->ctrl_wr_list.heci_cb.cb_list, cb_list) { + file_ext_temp = + (struct heci_file_private *) + priv_cb_pos->file_private; + if (file_ext_temp) { + if (same_id(file_ext, file_ext_temp)) + list_del(&priv_cb_pos->cb_list); + + } + + } + } + spin_unlock_bh(&dev->device_lock); + } +end: + DBG("free connect cb memory"); + kfree(req_msg.data); + req_msg.data = NULL; + kfree(res_msg.data); + res_msg.data = NULL; + kfree(priv_cb); + priv_cb = NULL; + return rets; +} + +/** + * heci_ioctl_wd - the wd IOCTL function + * @dev -Device object for our driver + * @if_num minor number + * @k_msg data in kernel on the stack + * @file_ext -extension of the file object + * + * @return : + * 0 on success, + * negative on failure. + */ +int heci_ioctl_wd(struct iamt_heci_device *dev, int if_num, + struct heci_message_data k_msg, + struct heci_file_private *file_ext) +{ + int rets = ESUCCESS; + struct heci_message_data req_msg; /*in kernel on the stack */ + + if (if_num != HECI_MINOR_NUMBER) + return -ENODEV; + + spin_lock(&file_ext->file_lock); + if (k_msg.size != HECI_WATCHDOG_DATA_SIZE) { + DBG("User buffer has invalid size.\n"); + spin_unlock(&file_ext->file_lock); + return -EMSGSIZE; + } + spin_unlock(&file_ext->file_lock); + + req_msg.data = kmalloc(HECI_WATCHDOG_DATA_SIZE, GFP_KERNEL); + if (!req_msg.data) { + DBG("failed allocation request buffer size = %d.\n", + HECI_WATCHDOG_DATA_SIZE); + return -ENOMEM; + } + req_msg.size = HECI_WATCHDOG_DATA_SIZE; + + /* copy the message to kernel space - use a pointer already + * copied into kernel space + */ + if (copy_from_user(req_msg.data, k_msg.data, req_msg.size)) { + rets = -EFAULT; + goto end; + } + spin_lock_bh(&dev->device_lock); + if (dev->heci_state != HECI_ENABLED) { + rets = -ENODEV; + spin_unlock_bh(&dev->device_lock); + goto end; + } + + if (dev->wd_file_ext.state != HECI_FILE_CONNECTED) { + rets = -ENODEV; + spin_unlock_bh(&dev->device_lock); + goto end; + } + if (!dev->asf_mode) { + rets = -EIO; + spin_unlock_bh(&dev->device_lock); + goto end; + } + + memcpy(&dev->wd_data[HECI_WD_PARAMS_SIZE], req_msg.data, + HECI_WATCHDOG_DATA_SIZE); + + dev->wd_timeout = (req_msg.data[1] << 8) + req_msg.data[0]; + if (dev->wd_timeout == 0) { + memcpy(dev->wd_data, &stop_wd_params, + HECI_WD_PARAMS_SIZE); + dev->wd_pending = FALSE; + dev->wd_due_counter = 1; /* next timer */ + } else { + memcpy(dev->wd_data, &start_wd_params, + HECI_WD_PARAMS_SIZE); + dev->wd_pending = FALSE; + dev->wd_due_counter = 1; + } + spin_unlock_bh(&dev->device_lock); +end: + kfree(req_msg.data); + req_msg.data = NULL; + return rets; +} + + +/** + * heci_ioctl_bypass_wd - the bypass_wd IOCTL function + * @dev -Device object for our driver + * @if_num minor number + * @k_msg data in kernel on the stack + * @file_ext -extension of the file object + * + * @return : + * 0 on success, + * negative on failure. + */ +int heci_ioctl_bypass_wd(struct iamt_heci_device *dev, int if_num, + struct heci_message_data k_msg, + struct heci_file_private *file_ext) +{ + __u8 flag = 0; + int rets = ESUCCESS; + + if (if_num != HECI_MINOR_NUMBER) + return -ENODEV; + spin_lock(&file_ext->file_lock); + if (k_msg.size < 1) { + DBG("user buffer less than HECI_WATCHDOG_DATA_SIZE .\n"); + spin_unlock(&file_ext->file_lock); + return -EMSGSIZE; + } + spin_unlock(&file_ext->file_lock); + if (copy_from_user(&flag, k_msg.data, 1)) { + rets = -EFAULT; + goto end; + } + + spin_lock_bh(&dev->device_lock); + flag = flag ?(TRUE):(FALSE); + dev->wd_bypass = flag; + spin_unlock_bh(&dev->device_lock); +end: + return rets; +} + + +/** + * legacy_ioctl_send_msg - send cmd data to pthi client + * @dev -Device object for our driver + * @if_num minor number + * @*u_msg pointer to user data struct in user space + * @k_msg data in kernel on the stack + * @file_ext -extension of the file object + * + * @return : + * 0 on success, + * negative on failure. + */ +int legacy_ioctl_send_msg(struct iamt_heci_device *dev, int if_num, + struct heci_message_data k_msg, + struct file *file) +{ + + int rets = ESUCCESS; + struct heci_message_data req_msg, res_msg; /*in kernel on the stack */ + struct heci_cb_private *priv_cb = NULL; + struct heci_file_private *file_ext = file->private_data; + __u8 i; + req_msg.data = NULL; + res_msg.data = NULL; + + if ((if_num != LEGACY_MINOR_NUMBER) || (!dev)) + return -ENODEV; + if (!file_ext) + return -ENODEV; + + spin_lock_bh(&dev->device_lock); + for (i = 0; i < dev->num_heci_me_clients; i++) { + if (dev->me_clients[i].client_id == + dev->legacy_file_ext.me_client_id) + break; + } + + BUG_ON(dev->me_clients[i].client_id != file_ext->me_client_id); + if ((i == dev->num_heci_me_clients) || + (dev->me_clients[i].client_id != + dev->legacy_file_ext.me_client_id)) { + spin_unlock_bh(&dev->device_lock); + return -ENODEV; + } else if (k_msg.size > dev->me_clients[i].props.max_msg_length + || k_msg.size <= 0) { + spin_unlock_bh(&dev->device_lock); + return -EMSGSIZE; + } + + + spin_unlock_bh(&dev->device_lock); + req_msg.data = kmalloc(k_msg.size, GFP_KERNEL); + res_msg.data = kmalloc(LEGACY_MTU, GFP_KERNEL); + + if (!res_msg.data) { + DBG("failed allocation response buffer size = %d.\n", + (int) sizeof(struct heci_client)); + + kfree(req_msg.data); + req_msg.data = NULL; + return -ENOMEM; + + } + if (!req_msg.data) { + DBG("failed allocation request buffer size = %d.\n", + (int) sizeof(struct guid)); + kfree(res_msg.data); + res_msg.data = NULL; + return -ENOMEM; + } + req_msg.size = k_msg.size; + res_msg.size = LEGACY_MTU; + if (!k_msg.data) { + rets = -EIO; + goto end; + } + + /* copy the message to kernel space - use a pointer already + * copied into kernel space + */ + if (copy_from_user(req_msg.data, k_msg.data, k_msg.size)) { + rets = -EFAULT; + goto end; + } + /* buffered ioctl cb */ + priv_cb = + kmalloc(sizeof(struct heci_cb_private), GFP_KERNEL); + if (!priv_cb) { + rets = -ENOMEM; + goto end; + } + INIT_LIST_HEAD(&priv_cb->cb_list); + + priv_cb->request_buffer.data = req_msg.data; + priv_cb->request_buffer.size = req_msg.size; + priv_cb->response_buffer.data = res_msg.data; + priv_cb->response_buffer.size = res_msg.size; + priv_cb->major_file_operations = HECI_IOCTL; + priv_cb->information = 0; + priv_cb->file_object = file; + priv_cb->file_private = file_ext; + spin_lock_bh(&dev->device_lock); + + if (dev->heci_state != HECI_ENABLED) { + rets = -ENODEV; + spin_unlock_bh(&dev->device_lock); + goto end; + } + if (dev->legacy_file_ext.state != HECI_FILE_CONNECTED) { + rets = -ENODEV; + spin_unlock_bh(&dev->device_lock); + goto end; + } + + + if (!list_empty(&dev->pthi_cmd_list.heci_cb.cb_list) || + dev->legacy_state != HECI_LEGACY_IDLE) { + DBG("pthi_state = %d\n", (int) dev->legacy_state); + DBG("add PTHI cb to pthi cmd waiting list"); + list_add_tail(&priv_cb->cb_list, + &dev->pthi_cmd_list.heci_cb.cb_list); + + } else { + DBG("call pthi write\n"); + rets = pthi_write(dev, priv_cb); + + if (ESUCCESS != rets) { + DBG("pthi write failed with status = %d\n", + rets); + spin_unlock_bh(&dev->device_lock); + goto end; + } + } + spin_unlock_bh(&dev->device_lock); + return rets; +end: + kfree(req_msg.data); + req_msg.data = NULL; + kfree(res_msg.data); + res_msg.data = NULL; + kfree(priv_cb); + priv_cb = NULL; + return rets; +} + + +/** + * legacy_ioctl_recv_msg - receive cmd data from pthi client + * @dev -Device object for our driver + * @if_num minor number + * @*u_msg pointer to user data struct in user space + * @k_msg data in kernel on the stack + * @file_ext -extension of the file object + * + * @return : + * 0 on success, + * negative on failure. + */ +int legacy_ioctl_recv_msg(struct iamt_heci_device *dev, int if_num, + struct heci_message_data *u_msg, + struct heci_message_data k_msg, + struct file *file) +{ + + int rets = ESUCCESS; + struct heci_message_data req_msg, res_msg; + struct heci_cb_private *priv_cb = NULL; + struct heci_file_private *file_ext = file->private_data; + __u8 i; + struct heci_file_private *file_ext_list_temp = NULL; + struct heci_cb_private *priv_cb_pos = NULL; + struct heci_cb_private *priv_cb_next = NULL; + + + res_msg.data = NULL; + req_msg.data = NULL; + + if ((if_num != LEGACY_MINOR_NUMBER) || (!dev)) + return -ENODEV; + spin_lock_bh(&dev->device_lock); + if (!file_ext) { + spin_unlock_bh(&dev->device_lock); + return -ENODEV; + } + for (i = 0; i < dev->num_heci_me_clients; i++) + if (dev->me_clients[i].client_id == + dev->legacy_file_ext.me_client_id) + break; + + BUG_ON(dev->me_clients[i].client_id != + file_ext->me_client_id); + if ((i == dev->num_heci_me_clients) + || (dev->me_clients[i].client_id != + dev->legacy_file_ext.me_client_id)) { + spin_unlock_bh(&dev->device_lock); + return -ENODEV; + } + + if (dev->pthi_read_complete_list.status == ESUCCESS) { + list_for_each_entry_safe(priv_cb_pos, priv_cb_next, + &dev->pthi_read_complete_list.heci_cb.cb_list, + cb_list) { + file_ext_list_temp = + (struct heci_file_private *) + priv_cb_pos->file_private; + if (file_ext_list_temp) { + if ((file_ext == &dev->legacy_file_ext) && + (priv_cb_pos->file_object == file)) { + list_del(&priv_cb_pos->cb_list); + priv_cb = + priv_cb_pos; + break; + } + } + + } + } + if (!priv_cb) { + spin_unlock_bh(&dev->device_lock); + return -EAGAIN; + } + + + res_msg.data = priv_cb->response_buffer.data; + res_msg.size = priv_cb->response_buffer.size; + req_msg.data = priv_cb->request_buffer.data; + req_msg.size = priv_cb->request_buffer.size; + DBG("pthi priv_cb->response_buffer size - %d\n", + priv_cb->response_buffer.size); + DBG("pthi priv_cb->information - %lu\n", + priv_cb->information); + spin_unlock_bh(&dev->device_lock); + + if (res_msg.size < priv_cb->information) { + rets = -EMSGSIZE; + goto end; + } + /* now copy the data to user space */ + if (copy_to_user(k_msg.data, + res_msg.data, + priv_cb->information)) { + rets = -EFAULT; + goto end; + } + if (put_user(priv_cb->information, &u_msg->size)) { + rets = -EFAULT; + goto end; + } +end: + kfree(req_msg.data); + kfree(res_msg.data); + kfree(priv_cb); + return rets; +} + +/** + * find_pthi_read_list_entry - finds a PTHIlist entry for current file + * @dev -Device object for our driver + * + * @return : + * returned a list entry on success, + * NULL on failure. + */ +struct heci_cb_private *find_pthi_read_list_entry( + struct iamt_heci_device *dev, + struct file *file, + struct heci_file_private *file_ext) +{ + struct heci_file_private *file_ext_temp = NULL; + struct heci_cb_private *priv_cb_pos = NULL; + struct heci_cb_private *priv_cb_next = NULL; + + if (dev->pthi_read_complete_list.status == ESUCCESS && + !list_empty(&dev->pthi_read_complete_list.heci_cb.cb_list)) { + list_for_each_entry_safe(priv_cb_pos, priv_cb_next, + &dev->pthi_read_complete_list.heci_cb.cb_list, + cb_list) { + file_ext_temp = (struct heci_file_private *) + priv_cb_pos->file_private; + if (file_ext_temp) { + if ((file_ext == &dev->legacy_file_ext) && + (priv_cb_pos->file_object == file)) + return priv_cb_pos; + } + } + } + return NULL; +} +/** + * pthi_read - read data from pthi client + * @dev -Device object for our driver + * @if_num minor number + * @*u_msg pointer to user data in user space + * @length-user data length + * + * @return : + * returned data length on success, + * zero if no data to read, + * negative on failure. + */ +int pthi_read(struct iamt_heci_device *dev, int if_num, struct file *file, + char *ubuf, size_t length, loff_t *offset) +{ + + int rets = ESUCCESS; + struct heci_cb_private *priv_cb = NULL; + struct heci_file_private *file_ext = file->private_data; + __u8 i; + unsigned long currtime = get_seconds(); + + if ((if_num != HECI_MINOR_NUMBER) || (!dev)) + return -ENODEV; + + if (!file_ext) + return -ENODEV; + + spin_lock_bh(&dev->device_lock); + for (i = 0; i < dev->num_heci_me_clients; i++) + if (dev->me_clients[i].client_id == + dev->legacy_file_ext.me_client_id) + break; + BUG_ON(dev->me_clients[i].client_id != file_ext->me_client_id); + if ((i == dev->num_heci_me_clients) + || (dev->me_clients[i].client_id != + dev->legacy_file_ext.me_client_id)) { + DBG("PTHI client not found\n"); + spin_unlock_bh(&dev->device_lock); + return -ENODEV; + } + priv_cb = find_pthi_read_list_entry(dev, file, file_ext); + if (!priv_cb) { + spin_unlock_bh(&dev->device_lock); + return 0; /* No more data to read */ + } else { + /* 15 sec for the message has expired */ + if (priv_cb && + currtime - priv_cb->read_time > LEGACY_READ_TIMER) { + list_del(&priv_cb->cb_list); + spin_unlock_bh(&dev->device_lock); + rets = -ETIMEDOUT; + goto free; + } + /* if the whole message will fit remove it from the list */ + if ((priv_cb->information >= *offset) && + (length >= (priv_cb->information - *offset))) + list_del(&priv_cb->cb_list); + + /* end of the message has been reached */ + else if ((priv_cb->information > 0) && + (priv_cb->information <= *offset)) { + list_del(&priv_cb->cb_list); + rets = 0; + spin_unlock_bh(&dev->device_lock); + goto free; + } + /* else means that not full buffer will be read and do not + * remove message from deletion list + */ + } + DBG("pthi priv_cb->response_buffer size - %d\n", + priv_cb->response_buffer.size); + DBG("pthi priv_cb->information - %lu\n", + priv_cb->information); + spin_unlock_bh(&dev->device_lock); + + /* length is being turncated to PAGE_SIZE, however, + * the information may be longer */ + length = length < (priv_cb->information - *offset) ? + length : (priv_cb->information - *offset); + + if (copy_to_user + (ubuf, priv_cb->response_buffer.data + *offset, length)) { + rets = -EFAULT; + } else { + rets = length; + if ((*offset + length) < priv_cb->information) { + *offset += length; + goto out; + } + } + DBG("free pthi cb memory\n"); +free: + *offset = 0; + kfree(priv_cb->request_buffer.data); + kfree(priv_cb->response_buffer.data); + kfree(priv_cb); +out: + return rets; +} + +/** + * heci_start_read - the start read client message function. + * @dev -Device object for our driver + * @if_num minor number + * @file_ext -extension of the file object + * + * @return : + * 0 on success, + * negative on failure. + */ +int heci_start_read(struct iamt_heci_device *dev, int if_num, + struct heci_file_private *file_ext) +{ + int rets = ESUCCESS; + __u8 i; + struct heci_cb_private *priv_cb = NULL; + + if ((if_num != HECI_MINOR_NUMBER) || (!dev) || (!file_ext)) { + DBG("receive wrong function input param\n."); + return -ENODEV; + } + if (file_ext->state != HECI_FILE_CONNECTED) + return -ENODEV; + spin_lock_bh(&dev->device_lock); + if (dev->heci_state != HECI_ENABLED) { + spin_unlock_bh(&dev->device_lock); + return -ENODEV; + } + spin_unlock_bh(&dev->device_lock); + DBG("check if read is pending\n"); + if (file_ext->read_pending || file_ext->read_cb != NULL) { + DBG("read is pending"); + return -EBUSY; + } + priv_cb = kmalloc(sizeof(struct heci_cb_private), GFP_KERNEL); + if (!priv_cb) + return -ENOMEM; + + DBG("allocation call back success\n"); + DBG("host client = %d, ME client = %d\n", + file_ext->host_client_id, file_ext->me_client_id); + spin_lock_bh(&dev->device_lock); + for (i = 0; i < dev->num_heci_me_clients; i++) + if (dev->me_clients[i].client_id == file_ext->me_client_id) + break; + + BUG_ON(dev->me_clients[i].client_id != file_ext->me_client_id); + if ((i == dev->num_heci_me_clients)) { + rets = -ENODEV; + goto unlock; + } + + priv_cb->response_buffer.size = + dev->me_clients[i].props.max_msg_length; + spin_unlock_bh(&dev->device_lock); + priv_cb->response_buffer.data = + kmalloc(priv_cb->response_buffer.size, GFP_KERNEL); + if (!priv_cb->response_buffer.data) { + rets = -ENOMEM; + goto fail; + } + DBG("allocation call back data success\n"); + priv_cb->major_file_operations = HECI_READ; + /* make sure information is zero before we start */ + priv_cb->information = 0; + priv_cb->file_private = (void *) file_ext; + file_ext->read_cb = priv_cb; + spin_lock_bh(&dev->device_lock); + if (dev->host_buffer_is_empty) { + dev->host_buffer_is_empty = FALSE; + if (!heci_send_flow_control(dev, file_ext)) { + rets = -ENODEV; + goto unlock; + } else { + list_add_tail(&priv_cb->cb_list, + &dev->read_list.heci_cb.cb_list); + } + } else { + list_add_tail(&priv_cb->cb_list, + &dev->ctrl_wr_list.heci_cb.cb_list); + } + spin_unlock_bh(&dev->device_lock); + return rets; +unlock: + spin_unlock_bh(&dev->device_lock); +fail: + kfree(priv_cb->response_buffer.data); + priv_cb->response_buffer.data = NULL; + priv_cb->file_private = NULL; + kfree(priv_cb); + return rets; +} + +/** + * pthi_write - write legacy data to pthi client + * @dev -Device object for our driver + * @priv_cb - heci call back struct + * @return : + * 0 on success, + * negative on failure. + */ +int pthi_write(struct iamt_heci_device *dev, + struct heci_cb_private *priv_cb) +{ + int rets = ESUCCESS; + struct heci_msg_hdr heci_hdr; + + if ((!dev) || (!priv_cb)) + return -ENODEV; + + DBG("write data to pthi client\n"); + + dev->legacy_state = HECI_LEGACY_WRITING; + dev->legacy_current_cb = priv_cb; + dev->legacy_file_object = priv_cb->file_object; + dev->legacy_canceled = FALSE; + dev->legacy_ioctl = TRUE; + dev->legacy_msg_buf_size = + priv_cb->request_buffer.size; + memcpy(dev->legacy_msg_buf, + priv_cb->request_buffer.data, + priv_cb->request_buffer.size); + + if (flow_ctrl_creds(dev, &dev->legacy_file_ext) && + dev->host_buffer_is_empty) { + dev->host_buffer_is_empty = FALSE; + if (priv_cb->request_buffer.size > + (((dev->host_hw_state & H_CBD) >> 24) * + sizeof(__u32)) - sizeof(struct heci_msg_hdr)) { + heci_hdr.length = + (((dev->host_hw_state & H_CBD) >> 24) * + sizeof(__u32)) - sizeof(struct heci_msg_hdr); + heci_hdr.msg_complete = 0; + } else { + heci_hdr.length = priv_cb->request_buffer.size; + heci_hdr.msg_complete = 1; + } + + heci_hdr.host_addr = dev->legacy_file_ext.host_client_id; + heci_hdr.me_addr = dev->legacy_file_ext.me_client_id; + heci_hdr.reserved = 0; + dev->legacy_msg_buf_index += heci_hdr.length; + if (!heci_write_message(dev, &heci_hdr, + (unsigned char *) (dev->legacy_msg_buf), + heci_hdr.length)) + return -ENODEV; + + if (heci_hdr.msg_complete) { + + flow_ctrl_reduce(dev, &dev->legacy_file_ext); + dev->legacy_flow_control_pending = TRUE; + dev->legacy_state = HECI_LEGACY_FLOW_CONTROL; + DBG("add pthi cb to write waiting list\n"); + dev->legacy_current_cb = priv_cb; + dev->legacy_file_object = priv_cb->file_object; + list_add_tail(&priv_cb->cb_list, + &dev->write_waiting_list.heci_cb.cb_list); + + } else { + DBG("message does not complete, " + "so add pthi cb to write list\n"); + list_add_tail(&priv_cb->cb_list, + &dev->write_list.heci_cb.cb_list); + } + + } else { + if (TRUE != dev->host_buffer_is_empty) + DBG("host buffer is not empty"); + DBG("No flow control credentials, " + "so add legacy cb to write list\n"); + list_add_tail(&priv_cb->cb_list, + &dev->write_list.heci_cb.cb_list); + } + return rets; +} + +/** + * legacy_ioctl_send_msg - send cmd data to pthi client + * @dev -Device object for our driver + * @return : + * 0 on success, + * negative on failure. + */ +void run_next_legacy_cmd(struct iamt_heci_device *dev) +{ + struct heci_file_private *file_ext_tmp = NULL; + struct heci_cb_private *priv_cb_pos = NULL; + struct heci_cb_private *priv_cb_next = NULL; + int status = ESUCCESS; + + if (!dev) + return; + dev->legacy_msg_buf_size = 0; + dev->legacy_msg_buf_index = 0; + dev->legacy_canceled = FALSE; + dev->legacy_ioctl = TRUE; + dev->legacy_state = HECI_LEGACY_IDLE; + dev->legacy_timer = 0; + dev->legacy_file_object = NULL; + + if (dev->pthi_cmd_list.status == ESUCCESS && + !list_empty(&dev->pthi_cmd_list.heci_cb.cb_list)) { + DBG("complete pthi cmd_list CB\n "); + + list_for_each_entry_safe(priv_cb_pos, priv_cb_next, + &dev->pthi_cmd_list.heci_cb.cb_list, cb_list){ + + list_del(&priv_cb_pos->cb_list); + file_ext_tmp = (struct heci_file_private *) + priv_cb_pos->file_private; + + if ((file_ext_tmp) && + (file_ext_tmp == &dev->legacy_file_ext)) { + status = pthi_write(dev, priv_cb_pos); + if (status != ESUCCESS) { + DBG("pthi write failed status = %d\n", + status); + return; + } + break; + } + } + } + return; +} diff -uprN -X a/Documentation/dontdiff a/drivers/char/heci/Kconfig b/drivers/char/heci/Kconfig --- a/drivers/char/heci/Kconfig 1969-12-31 19:00:00.000000000 -0500 +++ b/drivers/char/heci/Kconfig 2007-10-22 10:30:35.000000000 -0400 @@ -0,0 +1,12 @@ +# +# HECI device configuration +# + +config HECI + tristate "Intel Manageability Engine Interface (HECI) Support" + depends on EXPERIMENTAL + help + The Intel Manageability Engine Interface driver allows + applications to access the Active Management Technology + firmware via host interface (as opposed to a network interface). + diff -uprN -X a/Documentation/dontdiff a/drivers/char/heci/Makefile b/drivers/char/heci/Makefile --- a/drivers/char/heci/Makefile 1969-12-31 19:00:00.000000000 -0500 +++ b/drivers/char/heci/Makefile 2007-10-22 10:30:35.000000000 -0400 @@ -0,0 +1,7 @@ +# +## Makefile for the Intel MEI driver (heci) +# + +obj-$(CONFIG_HECI) += heci.o + +heci-objs := heci_init.o heci_interface.o heci_main.o interrupt.o io_heci.o diff -uprN -X a/Documentation/dontdiff a/drivers/char/Kconfig b/drivers/char/Kconfig --- a/drivers/char/Kconfig 2007-10-12 12:43:44.000000000 -0400 +++ b/drivers/char/Kconfig 2007-10-22 10:30:35.000000000 -0400 @@ -1063,6 +1063,7 @@ config DEVPORT default y source "drivers/s390/char/Kconfig" +source "drivers/char/heci/Kconfig" endmenu diff -uprN -X a/Documentation/dontdiff a/drivers/char/Makefile b/drivers/char/Makefile --- a/drivers/char/Makefile 2007-10-12 12:43:44.000000000 -0400 +++ b/drivers/char/Makefile 2007-10-22 10:30:35.000000000 -0400 @@ -105,6 +105,7 @@ obj-$(CONFIG_IPMI_HANDLER) += ipmi/ obj-$(CONFIG_HANGCHECK_TIMER) += hangcheck-timer.o obj-$(CONFIG_TCG_TPM) += tpm/ +obj-$(CONFIG_HECI) += heci/ obj-$(CONFIG_PS3_FLASH) += ps3flash.o diff -uprN -X a/Documentation/dontdiff a/MAINTAINERS b/MAINTAINERS --- a/MAINTAINERS 2007-10-12 12:43:44.000000000 -0400 +++ b/MAINTAINERS 2007-10-22 10:30:35.000000000 -0400 @@ -1993,6 +1993,15 @@ M: kernel@wantstofly.org L: netdev@vger.kernel.org S: Maintained +INTEL MANAGEABILITY ENGINE INTERFACE (HECI) +P: Anas Nashif +M: anas.nashif@intel.com +P: Marek Dabek +M: marek.dabek@intel.com +W: http://www.openamt.org +L: openamt-devel@lists.sourceforge.net +S: Supported + INTEL PRO/100 ETHERNET SUPPORT P: John Ronciak M: john.ronciak@intel.com