diff options
Diffstat (limited to 'drivers/staging/heci/heci_init.c')
| -rw-r--r-- | drivers/staging/heci/heci_init.c | 1083 |
1 files changed, 0 insertions, 1083 deletions
diff --git a/drivers/staging/heci/heci_init.c b/drivers/staging/heci/heci_init.c deleted file mode 100644 index 31fd891c099d..000000000000 --- a/drivers/staging/heci/heci_init.c +++ /dev/null @@ -1,1083 +0,0 @@ -/* - * Part of Intel(R) Manageability Engine Interface Linux driver - * - * Copyright (c) 2003 - 2008 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 <linux/module.h> -#include <linux/pci.h> -#include <linux/reboot.h> -#include <linux/poll.h> -#include <linux/init.h> -#include <linux/kdev_t.h> -#include <linux/moduleparam.h> -#include <linux/wait.h> -#include <linux/delay.h> -#include <linux/kthread.h> - -#include "heci_data_structures.h" -#include "heci_interface.h" -#include "heci.h" - - -const __u8 heci_start_wd_params[] = { 0x02, 0x12, 0x13, 0x10 }; -const __u8 heci_stop_wd_params[] = { 0x02, 0x02, 0x14, 0x10 }; - -const __u8 heci_wd_state_independence_msg[3][4] = { - {0x05, 0x02, 0x51, 0x10}, - {0x05, 0x02, 0x52, 0x10}, - {0x07, 0x02, 0x01, 0x10} -}; - -static 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 - */ -static void heci_check_asf_mode(struct iamt_heci_device *dev); -static int host_start_message(struct iamt_heci_device *dev); -static int host_enum_clients_message(struct iamt_heci_device *dev); -static int allocate_me_clients_storage(struct iamt_heci_device *dev); -static void host_init_wd(struct iamt_heci_device *dev); -static void host_init_iamthif(struct iamt_heci_device *dev); -static int heci_wait_event_int_timeout(struct iamt_heci_device *dev, - long timeout); - - -/** - * heci_initialize_list - Sets up a queue list. - * - * @list: An instance of our list structure - * @dev: Device object for our driver - */ -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 = 0; - list->device_extension = dev; -} - -/** - * heci_flush_queues - flush our queues list belong to file_ext. - * - * @dev: Device object for our driver - * @file_ext: private data of the file object - */ -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 < HECI_IO_LISTS_NUMBER; i++) { - DBG("remove list entry belong to file_ext\n"); - heci_flush_list(dev->io_list_array[i], file_ext); - } -} - - -/** - * heci_flush_list - remove list entry belong to file_ext. - * - * @list: An instance of our list structure - * @file_ext: private data of the file object - */ -void heci_flush_list(struct io_heci_list *list, - struct heci_file_private *file_ext) -{ - struct heci_file_private *file_ext_tmp; - struct heci_cb_private *priv_cb_pos = NULL; - struct heci_cb_private *priv_cb_next = NULL; - - if (!list || !file_ext) - return; - - if (list->status != 0) - return; - - if (list_empty(&list->heci_cb.cb_list)) - return; - - 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 (heci_fe_same_id(file_ext, file_ext_tmp)) - list_del(&priv_cb_pos->cb_list); - } - } - } -} - -/** - * heci_reset_iamthif_params - initializes heci device iamthif - * - * @dev: The heci device structure - */ -static void heci_reset_iamthif_params(struct iamt_heci_device *dev) -{ - /* reset iamthif parameters. */ - dev->iamthif_current_cb = NULL; - dev->iamthif_msg_buf_size = 0; - dev->iamthif_msg_buf_index = 0; - dev->iamthif_canceled = 0; - dev->iamthif_file_ext.file = NULL; - dev->iamthif_ioctl = 0; - dev->iamthif_state = HECI_IAMTHIF_IDLE; - dev->iamthif_timer = 0; -} - -/** - * init_heci_device - allocates and initializes the heci device structure - * - * @pdev: The pci device structure - * - * returns 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 *dev; - - dev = kzalloc(sizeof(struct iamt_heci_device), GFP_KERNEL); - if (!dev) - return NULL; - - /* setup our list array */ - dev->io_list_array[0] = &dev->read_list; - dev->io_list_array[1] = &dev->write_list; - dev->io_list_array[2] = &dev->write_waiting_list; - dev->io_list_array[3] = &dev->ctrl_wr_list; - dev->io_list_array[4] = &dev->ctrl_rd_list; - dev->io_list_array[5] = &dev->pthi_cmd_list; - dev->io_list_array[6] = &dev->pthi_read_complete_list; - INIT_LIST_HEAD(&dev->file_list); - INIT_LIST_HEAD(&dev->wd_file_ext.link); - INIT_LIST_HEAD(&dev->iamthif_file_ext.link); - spin_lock_init(&dev->device_lock); - init_waitqueue_head(&dev->wait_recvd_msg); - init_waitqueue_head(&dev->wait_stop_wd); - dev->heci_state = HECI_INITIALIZING; - dev->iamthif_state = HECI_IAMTHIF_IDLE; - - /* init work for schedule work */ - INIT_WORK(&dev->work, NULL); - for (i = 0; i < HECI_IO_LISTS_NUMBER; i++) - heci_initialize_list(dev->io_list_array[i], dev); - dev->pdev = pdev; - return dev; -} - - - - -static int heci_wait_event_int_timeout(struct iamt_heci_device *dev, - long timeout) -{ - return wait_event_interruptible_timeout(dev->wait_recvd_msg, - (dev->recvd_msg), timeout); -} - -/** - * heci_hw_init - init host and fw to start work. - * - * @dev: Device object for our driver - * - * returns 0 on success, <0 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 */ - heci_csr_clear_his(dev); - } - dev->recvd_msg = 0; - DBG("reset in start the heci device.\n"); - - heci_reset(dev, 1); - - 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"); - - printk(KERN_ERR - "heci: link layer initialization failed.\n"); - return -ENODEV; - } - } - dev->recvd_msg = 0; - 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"); - printk(KERN_INFO "heci: link layer has been established.\n"); - return 0; -} - -/** - * heci_hw_reset - reset fw via heci csr register. - * - * @dev: Device object for our driver - * @interrupts: if interrupt should be enable after reset. - */ -static void heci_hw_reset(struct iamt_heci_device *dev, int interrupts) -{ - dev->host_hw_state |= (H_RST | H_IG); - - if (interrupts) - heci_csr_enable_interrupts(dev); - else - heci_csr_disable_interrupts(dev); - - BUG_ON((dev->host_hw_state & H_RST) != H_RST); - BUG_ON((dev->host_hw_state & H_RDY) != 0); -} - -/** - * heci_reset - reset host and fw. - * - * @dev: Device object for our driver - * @interrupts: if interrupt should be enable after reset. - */ -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; - int unexpected = 0; - - if (dev->heci_state == HECI_RECOVERING_FROM_RESET) { - dev->need_reset = 1; - return; - } - - if (dev->heci_state != HECI_INITIALIZING && - dev->heci_state != HECI_DISABLED && - dev->heci_state != HECI_POWER_DOWN && - dev->heci_state != HECI_POWER_UP) - unexpected = 1; - - if (dev->reinit_tsk != NULL) { - kthread_stop(dev->reinit_tsk); - dev->reinit_tsk = NULL; - } - - dev->host_hw_state = read_heci_register(dev, H_CSR); - - DBG("before reset host_hw_state = 0x%08x.\n", - dev->host_hw_state); - - heci_hw_reset(dev, interrupts); - - dev->host_hw_state &= ~H_RST; - dev->host_hw_state |= H_IG; - - heci_set_csr_register(dev); - - DBG("currently saved host_hw_state = 0x%08x.\n", - dev->host_hw_state); - - dev->need_reset = 0; - - if (dev->heci_state != HECI_INITIALIZING) { - if ((dev->heci_state != HECI_DISABLED) && - (dev->heci_state != HECI_POWER_DOWN)) - 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 iamthif 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->iamthif_file_ext.host_client_id); - - heci_reset_iamthif_params(dev); - dev->wd_due_counter = 0; - dev->extra_write_index = 0; - } - - dev->num_heci_me_clients = 0; - dev->rd_msg_hdr = 0; - dev->stop = 0; - 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 (unexpected) - printk(KERN_WARNING "heci: unexpected reset.\n"); - - /* Wake 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)) { - printk(KERN_INFO "heci: Waking up client!\n"); - wake_up_interruptible(&file_pos->rx_wait); - } - } - /* remove all waiting requests */ - if (dev->write_list.status == 0 && - !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); - heci_free_cb_private(priv_cb_pos); - } - } - } -} - -/** - * heci_initialize_clients - heci communication initialization. - * - * @dev: Device object for our driver - */ -int heci_initialize_clients(struct iamt_heci_device *dev) -{ - int status; - - msleep(100); /* FW needs time to be ready to talk with us */ - DBG("link is established start sending messages.\n"); - /* link is established start sending messages. */ - status = host_start_message(dev); - if (status != 0) { - spin_lock_bh(&dev->device_lock); - dev->heci_state = HECI_DISABLED; - spin_unlock_bh(&dev->device_lock); - DBG("start sending messages failed.\n"); - return status; - } - - /* enumerate clients */ - status = host_enum_clients_message(dev); - if (status != 0) { - spin_lock_bh(&dev->device_lock); - dev->heci_state = HECI_DISABLED; - spin_unlock_bh(&dev->device_lock); - DBG("enum clients failed.\n"); - return status; - } - /* allocate storage for ME clients representation */ - status = allocate_me_clients_storage(dev); - if (status != 0) { - spin_lock_bh(&dev->device_lock); - dev->num_heci_me_clients = 0; - dev->heci_state = HECI_DISABLED; - spin_unlock_bh(&dev->device_lock); - DBG("allocate clients failed.\n"); - return status; - } - - heci_check_asf_mode(dev); - /*heci initialization wd */ - host_init_wd(dev); - /*heci initialization iamthif client */ - host_init_iamthif(dev); - - spin_lock_bh(&dev->device_lock); - if (dev->need_reset) { - dev->need_reset = 0; - dev->heci_state = HECI_DISABLED; - spin_unlock_bh(&dev->device_lock); - 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; - spin_unlock_bh(&dev->device_lock); - DBG("initialization heci clients successful.\n"); - return 0; -} - -/** - * heci_task_initialize_clients - heci reinitialization task - * - * @data: Device object for our driver - */ -int heci_task_initialize_clients(void *data) -{ - int ret; - struct iamt_heci_device *dev = (struct iamt_heci_device *) data; - - spin_lock_bh(&dev->device_lock); - if (dev->reinit_tsk != NULL) { - spin_unlock_bh(&dev->device_lock); - DBG("reinit task already started.\n"); - return 0; - } - dev->reinit_tsk = current; - current->flags |= PF_NOFREEZE; - spin_unlock_bh(&dev->device_lock); - - ret = heci_initialize_clients(dev); - - spin_lock_bh(&dev->device_lock); - dev->reinit_tsk = NULL; - spin_unlock_bh(&dev->device_lock); - - return ret; -} - -/** - * host_start_message - heci host send start message. - * - * @dev: Device object for our driver - * - * returns 0 on success, <0 on failure. - */ -static 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 */ - 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(struct hbm_host_version_request)); - host_start_req->cmd.cmd = HOST_START_REQ_CMD; - host_start_req->host_version.major_version = HBM_MAJOR_VERSION; - host_start_req->host_version.minor_version = HBM_MINOR_VERSION; - dev->recvd_msg = 0; - if (!heci_write_message(dev, heci_hdr, - (unsigned char *) (host_start_req), - heci_hdr->length)) { - 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) { - DBG("wait_timeout failed on host start response message.\n"); - return -ENODEV; - } - dev->recvd_msg = 0; - 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(struct hbm_host_stop_request)); - host_stop_req->cmd.cmd = HOST_STOP_REQ_CMD; - host_stop_req->reason = DRIVER_STOP_REQUEST; - heci_write_message(dev, heci_hdr, - (unsigned char *) (host_stop_req), - heci_hdr->length); - DBG("version mismatch.\n"); - return -ENODEV; - } - - return 0; -} - -/** - * host_enum_clients_message - host send enumeration client request message. - * - * @dev: Device object for our driver - * - * returns 0 on success, <0 on failure. - */ -static 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; - int 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(struct hbm_host_enum_request)); - host_enum_req->cmd.cmd = HOST_ENUM_REQ_CMD; - if (!heci_write_message(dev, heci_hdr, - (unsigned char *) (host_enum_req), - heci_hdr->length)) { - DBG("send enumeration request failed.\n"); - return -ENODEV; - } - /* wait for response */ - dev->recvd_msg = 0; - err = heci_wait_event_int_timeout(dev, timeout * HZ); - if (!err && !dev->recvd_msg) { - DBG("wait_event_interruptible_timeout failed " - "on enumeration clients response message.\n"); - return -ENODEV; - } - dev->recvd_msg = 0; - - spin_lock_bh(&dev->device_lock); - /* 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++; - - } - } - spin_unlock_bh(&dev->device_lock); - - return 0; -} - -/** - * host_client_properties - reads properties for client - * - * @dev: Device object for our driver - * @idx: client index in me client array - * @client_id: id of the client - * - * returns 0 on success, <0 on failure. - */ -static int host_client_properties(struct iamt_heci_device *dev, - struct heci_me_client *client) -{ - struct heci_msg_hdr *heci_hdr; - struct hbm_props_request *host_cli_req; - int err; - - 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_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; - if (!heci_write_message(dev, heci_hdr, - (unsigned char *) (host_cli_req), - heci_hdr->length)) { - DBG("send props request failed.\n"); - return -ENODEV; - } - /* wait for response */ - dev->recvd_msg = 0; - err = heci_wait_event_int_timeout(dev, 10 * HZ); - if (!err && !dev->recvd_msg) { - DBG("wait failed on props resp msg.\n"); - return -ENODEV; - } - dev->recvd_msg = 0; - return 0; -} - -/** - * allocate_me_clients_storage - allocate storage for me clients - * - * @dev: Device object for our driver - * - * returns 0 on success, <0 on failure. - */ -static int allocate_me_clients_storage(struct iamt_heci_device *dev) -{ - struct heci_me_client *clients; - struct heci_me_client *client; - __u8 num, i, j; - int err; - - if (dev->num_heci_me_clients <= 0) - return 0; - - spin_lock_bh(&dev->device_lock); - kfree(dev->me_clients); - dev->me_clients = NULL; - spin_unlock_bh(&dev->device_lock); - - /* allocate storage for ME clients representation */ - clients = kcalloc(dev->num_heci_me_clients, - sizeof(struct heci_me_client), GFP_KERNEL); - if (!clients) { - DBG("memory allocation for ME clients failed.\n"); - return -ENOMEM; - } - - spin_lock_bh(&dev->device_lock); - dev->me_clients = clients; - spin_unlock_bh(&dev->device_lock); - - 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) { - client = &dev->me_clients[num]; - client->client_id = (i * 8) + j; - client->flow_ctrl_creds = 0; - err = host_client_properties(dev, client); - if (err != 0) { - spin_lock_bh(&dev->device_lock); - kfree(dev->me_clients); - dev->me_clients = NULL; - spin_unlock_bh(&dev->device_lock); - return err; - } - num++; - } - } - } - - return 0; -} - -/** - * heci_init_file_private - initializes private file structure. - * - * @priv: private file structure to be initialized - * @file: the file structure - */ -static void heci_init_file_private(struct heci_file_private *priv, - struct file *file) -{ - memset(priv, 0, sizeof(struct heci_file_private)); - 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; -} - -/** - * heci_find_me_client - search for ME client guid - * sets client_id in heci_file_private if found - * @dev: Device object for our driver - * @priv: private file structure to set client_id in - * @cguid: searched guid of ME client - * @client_id: id of host client to be set in file private structure - * - * returns ME client index - */ -static __u8 heci_find_me_client(struct iamt_heci_device *dev, - struct heci_file_private *priv, - const struct guid *cguid, __u8 client_id) -{ - __u8 i; - - if ((dev == NULL) || (priv == NULL) || (cguid == NULL)) - return 0; - - for (i = 0; i < dev->num_heci_me_clients; i++) { - if (memcmp(cguid, - &dev->me_clients[i].props.protocol_name, - sizeof(struct guid)) == 0) { - priv->me_client_id = dev->me_clients[i].client_id; - priv->state = HECI_FILE_CONNECTING; - priv->host_client_id = client_id; - - list_add_tail(&priv->link, &dev->file_list); - return i; - } - } - return 0; -} - -/** - * heci_check_asf_mode - check for ASF client - * - * @dev: Device object for our driver - */ -static void heci_check_asf_mode(struct iamt_heci_device *dev) -{ - __u8 i; - - spin_lock_bh(&dev->device_lock); - dev->asf_mode = 0; - /* 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 = 1; - spin_unlock_bh(&dev->device_lock); - DBG("found ME ASF client.\n"); - return; - } - } - spin_unlock_bh(&dev->device_lock); - DBG("assume AMT mode.\n"); -} - -/** - * heci_connect_me_client - connect ME client - * @dev: Device object for our driver - * @priv: private file structure - * @timeout: connect timeout in seconds - * - * returns 1 - if connected, 0 - if not - */ -static __u8 heci_connect_me_client(struct iamt_heci_device *dev, - struct heci_file_private *priv, - long timeout) -{ - int err = 0; - - if ((dev == NULL) || (priv == NULL)) - return 0; - - if (!heci_connect(dev, priv)) { - DBG("failed to call heci_connect for client_id=%d.\n", - priv->host_client_id); - spin_lock_bh(&dev->device_lock); - heci_remove_client_from_file_list(dev, priv->host_client_id); - priv->state = HECI_FILE_DISCONNECTED; - spin_unlock_bh(&dev->device_lock); - return 0; - } - - err = wait_event_timeout(dev->wait_recvd_msg, - (HECI_FILE_CONNECTED == priv->state || - HECI_FILE_DISCONNECTED == priv->state), - timeout * HZ); - if (HECI_FILE_CONNECTED != priv->state) { - spin_lock_bh(&dev->device_lock); - heci_remove_client_from_file_list(dev, priv->host_client_id); - DBG("failed to connect client_id=%d state=%d.\n", - priv->host_client_id, priv->state); - if (err) - DBG("failed connect err=%08x\n", err); - priv->state = HECI_FILE_DISCONNECTED; - spin_unlock_bh(&dev->device_lock); - return 0; - } - DBG("successfully connected client_id=%d.\n", - priv->host_client_id); - return 1; -} - -/** - * host_init_wd - heci initialization wd. - * - * @dev: Device object for our driver - */ -static void host_init_wd(struct iamt_heci_device *dev) -{ - spin_lock_bh(&dev->device_lock); - - heci_init_file_private(&dev->wd_file_ext, NULL); - - /* look for WD client and connect to it */ - dev->wd_file_ext.state = HECI_FILE_DISCONNECTED; - dev->wd_timeout = 0; - - if (dev->asf_mode) { - memcpy(dev->wd_data, heci_stop_wd_params, HECI_WD_PARAMS_SIZE); - } else { - /* AMT mode */ - dev->wd_timeout = AMT_WD_VALUE; - DBG("dev->wd_timeout=%d.\n", dev->wd_timeout); - memcpy(dev->wd_data, heci_start_wd_params, HECI_WD_PARAMS_SIZE); - memcpy(dev->wd_data + HECI_WD_PARAMS_SIZE, - &dev->wd_timeout, sizeof(__u16)); - } - - /* find ME WD client */ - heci_find_me_client(dev, &dev->wd_file_ext, - &heci_wd_guid, HECI_WD_HOST_CLIENT_ID); - spin_unlock_bh(&dev->device_lock); - - DBG("check wd_file_ext\n"); - if (HECI_FILE_CONNECTING == dev->wd_file_ext.state) { - if (heci_connect_me_client(dev, &dev->wd_file_ext, 15) == 1) { - 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 connected to WD client.\n"); - } - } else - DBG("failed to find WD client.\n"); - - - spin_lock_bh(&dev->device_lock); - dev->wd_timer.function = &heci_wd_timer; - dev->wd_timer.data = (unsigned long) dev; - spin_unlock_bh(&dev->device_lock); -} - - -/** - * host_init_iamthif - heci initialization iamthif client. - * - * @dev: Device object for our driver - * - */ -static void host_init_iamthif(struct iamt_heci_device *dev) -{ - __u8 i; - - spin_lock_bh(&dev->device_lock); - - heci_init_file_private(&dev->iamthif_file_ext, NULL); - dev->iamthif_file_ext.state = HECI_FILE_DISCONNECTED; - - /* find ME PTHI client */ - i = heci_find_me_client(dev, &dev->iamthif_file_ext, - &heci_pthi_guid, HECI_IAMTHIF_HOST_CLIENT_ID); - if (dev->iamthif_file_ext.state != HECI_FILE_CONNECTING) { - DBG("failed to find iamthif client.\n"); - spin_unlock_bh(&dev->device_lock); - return; - } - - BUG_ON(dev->me_clients[i].props.max_msg_length != IAMTHIF_MTU); - - spin_unlock_bh(&dev->device_lock); - if (heci_connect_me_client(dev, &dev->iamthif_file_ext, 15) == 1) { - DBG("connected to iamthif client.\n"); - dev->iamthif_state = HECI_IAMTHIF_IDLE; - } -} - -/** - * heci_alloc_file_private - allocates a private file structure and set it up. - * @file: the file structure - * - * returns The allocated file or NULL on failure - */ -struct heci_file_private *heci_alloc_file_private(struct file *file) -{ - struct heci_file_private *priv; - - priv = kmalloc(sizeof(struct heci_file_private), GFP_KERNEL); - if (!priv) - return NULL; - - heci_init_file_private(priv, file); - - return priv; -} - - - -/** - * heci_disconnect_host_client - send disconnect message to fw from host client. - * - * @dev: Device object for our driver - * @file_ext: private data of the file object - * - * returns 0 on success, <0 on failure. - */ -int heci_disconnect_host_client(struct iamt_heci_device *dev, - struct heci_file_private *file_ext) -{ - int rets, err; - long timeout = 15; /* 15 seconds */ - struct heci_cb_private *priv_cb; - - if ((!dev) || (!file_ext)) - return -ENODEV; - - spin_lock_bh(&dev->device_lock); - if (file_ext->state != HECI_FILE_DISCONNECTING) { - spin_unlock_bh(&dev->device_lock); - return 0; - } - spin_unlock_bh(&dev->device_lock); - - priv_cb = kzalloc(sizeof(struct heci_cb_private), GFP_KERNEL); - if (!priv_cb) - return -ENOMEM; - - 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 = 0; - if (heci_disconnect(dev, file_ext)) { - mdelay(10); /* Wait for hardware disconnection ready */ - 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 { - 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); - - spin_lock_bh(&dev->device_lock); - if (HECI_FILE_DISCONNECTED == file_ext->state) { - rets = 0; - DBG("successfully disconnected 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 disconnect from fw client.\n"); - } - - heci_flush_list(&dev->ctrl_rd_list, file_ext); - heci_flush_list(&dev->ctrl_wr_list, file_ext); - spin_unlock_bh(&dev->device_lock); -free: - heci_free_cb_private(priv_cb); - return rets; -} - -/** - * heci_remove_client_from_file_list - - * remove file private data from device file list - * - * @dev: Device object for our driver - * @host_client_id: host client id to be removed - */ -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_init(&file_pos->link); - break; - } - } -} |