diff options
Diffstat (limited to 'drivers/net/wireless/iwmc3200wifi/sdio.c')
| -rw-r--r-- | drivers/net/wireless/iwmc3200wifi/sdio.c | 509 |
1 files changed, 0 insertions, 509 deletions
diff --git a/drivers/net/wireless/iwmc3200wifi/sdio.c b/drivers/net/wireless/iwmc3200wifi/sdio.c deleted file mode 100644 index 0042f20..0000000 --- a/drivers/net/wireless/iwmc3200wifi/sdio.c +++ /dev/null @@ -1,509 +0,0 @@ -/* - * Intel Wireless Multicomm 3200 WiFi driver - * - * Copyright (C) 2009 Intel Corporation. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * 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 MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * 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 DAMAGE. - * - * - * Intel Corporation <ilw@linux.intel.com> - * Samuel Ortiz <samuel.ortiz@intel.com> - * Zhu Yi <yi.zhu@intel.com> - * - */ - -/* - * This is the SDIO bus specific hooks for iwm. - * It also is the module's entry point. - * - * Interesting code paths: - * iwm_sdio_probe() (Called by an SDIO bus scan) - * -> iwm_if_alloc() (netdev.c) - * -> iwm_wdev_alloc() (cfg80211.c, allocates and register our wiphy) - * -> wiphy_new() - * -> wiphy_register() - * -> alloc_netdev_mq() - * -> register_netdev() - * - * iwm_sdio_remove() - * -> iwm_if_free() (netdev.c) - * -> unregister_netdev() - * -> iwm_wdev_free() (cfg80211.c) - * -> wiphy_unregister() - * -> wiphy_free() - * - * iwm_sdio_isr() (called in process context from the SDIO core code) - * -> queue_work(.., isr_worker) - * -- [async] --> iwm_sdio_isr_worker() - * -> iwm_rx_handle() - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/netdevice.h> -#include <linux/debugfs.h> -#include <linux/mmc/sdio_ids.h> -#include <linux/mmc/sdio.h> -#include <linux/mmc/sdio_func.h> - -#include "iwm.h" -#include "debug.h" -#include "bus.h" -#include "sdio.h" - -static void iwm_sdio_isr_worker(struct work_struct *work) -{ - struct iwm_sdio_priv *hw; - struct iwm_priv *iwm; - struct iwm_rx_info *rx_info; - struct sk_buff *skb; - u8 *rx_buf; - unsigned long rx_size; - - hw = container_of(work, struct iwm_sdio_priv, isr_worker); - iwm = hw_to_iwm(hw); - - while (!skb_queue_empty(&iwm->rx_list)) { - skb = skb_dequeue(&iwm->rx_list); - rx_info = skb_to_rx_info(skb); - rx_size = rx_info->rx_size; - rx_buf = skb->data; - - IWM_HEXDUMP(iwm, DBG, SDIO, "RX: ", rx_buf, rx_size); - if (iwm_rx_handle(iwm, rx_buf, rx_size) < 0) - IWM_WARN(iwm, "RX error\n"); - - kfree_skb(skb); - } -} - -static void iwm_sdio_isr(struct sdio_func *func) -{ - struct iwm_priv *iwm; - struct iwm_sdio_priv *hw; - struct iwm_rx_info *rx_info; - struct sk_buff *skb; - unsigned long buf_size, read_size; - int ret; - u8 val; - - hw = sdio_get_drvdata(func); - iwm = hw_to_iwm(hw); - - buf_size = hw->blk_size; - - /* We're checking the status */ - val = sdio_readb(func, IWM_SDIO_INTR_STATUS_ADDR, &ret); - if (val == 0 || ret < 0) { - IWM_ERR(iwm, "Wrong INTR_STATUS\n"); - return; - } - - /* See if we have free buffers */ - if (skb_queue_len(&iwm->rx_list) > IWM_RX_LIST_SIZE) { - IWM_ERR(iwm, "No buffer for more Rx frames\n"); - return; - } - - /* We first read the transaction size */ - read_size = sdio_readb(func, IWM_SDIO_INTR_GET_SIZE_ADDR + 1, &ret); - read_size = read_size << 8; - - if (ret < 0) { - IWM_ERR(iwm, "Couldn't read the xfer size\n"); - return; - } - - /* We need to clear the INT register */ - sdio_writeb(func, 1, IWM_SDIO_INTR_CLEAR_ADDR, &ret); - if (ret < 0) { - IWM_ERR(iwm, "Couldn't clear the INT register\n"); - return; - } - - while (buf_size < read_size) - buf_size <<= 1; - - skb = dev_alloc_skb(buf_size); - if (!skb) { - IWM_ERR(iwm, "Couldn't alloc RX skb\n"); - return; - } - rx_info = skb_to_rx_info(skb); - rx_info->rx_size = read_size; - rx_info->rx_buf_size = buf_size; - - /* Now we can read the actual buffer */ - ret = sdio_memcpy_fromio(func, skb_put(skb, read_size), - IWM_SDIO_DATA_ADDR, read_size); - - /* The skb is put on a driver's specific Rx SKB list */ - skb_queue_tail(&iwm->rx_list, skb); - - /* We can now schedule the actual worker */ - queue_work(hw->isr_wq, &hw->isr_worker); -} - -static void iwm_sdio_rx_free(struct iwm_sdio_priv *hw) -{ - struct iwm_priv *iwm = hw_to_iwm(hw); - - flush_workqueue(hw->isr_wq); - - skb_queue_purge(&iwm->rx_list); -} - -/* Bus ops */ -static int if_sdio_enable(struct iwm_priv *iwm) -{ - struct iwm_sdio_priv *hw = iwm_to_if_sdio(iwm); - int ret; - - sdio_claim_host(hw->func); - - ret = sdio_enable_func(hw->func); - if (ret) { - IWM_ERR(iwm, "Couldn't enable the device: is TOP driver " - "loaded and functional?\n"); - goto release_host; - } - - iwm_reset(iwm); - - ret = sdio_claim_irq(hw->func, iwm_sdio_isr); - if (ret) { - IWM_ERR(iwm, "Failed to claim irq: %d\n", ret); - goto release_host; - } - - sdio_writeb(hw->func, 1, IWM_SDIO_INTR_ENABLE_ADDR, &ret); - if (ret < 0) { - IWM_ERR(iwm, "Couldn't enable INTR: %d\n", ret); - goto release_irq; - } - - sdio_release_host(hw->func); - - IWM_DBG_SDIO(iwm, INFO, "IWM SDIO enable\n"); - - return 0; - - release_irq: - sdio_release_irq(hw->func); - release_host: - sdio_release_host(hw->func); - - return ret; -} - -static int if_sdio_disable(struct iwm_priv *iwm) -{ - struct iwm_sdio_priv *hw = iwm_to_if_sdio(iwm); - int ret; - - sdio_claim_host(hw->func); - sdio_writeb(hw->func, 0, IWM_SDIO_INTR_ENABLE_ADDR, &ret); - if (ret < 0) - IWM_WARN(iwm, "Couldn't disable INTR: %d\n", ret); - - sdio_release_irq(hw->func); - sdio_disable_func(hw->func); - sdio_release_host(hw->func); - - iwm_sdio_rx_free(hw); - - iwm_reset(iwm); - - IWM_DBG_SDIO(iwm, INFO, "IWM SDIO disable\n"); - - return 0; -} - -static int if_sdio_send_chunk(struct iwm_priv *iwm, u8 *buf, int count) -{ - struct iwm_sdio_priv *hw = iwm_to_if_sdio(iwm); - int aligned_count = ALIGN(count, hw->blk_size); - int ret; - - if ((unsigned long)buf & 0x3) { - IWM_ERR(iwm, "buf <%p> is not dword aligned\n", buf); - /* TODO: Is this a hardware limitation? use get_unligned */ - return -EINVAL; - } - - sdio_claim_host(hw->func); - ret = sdio_memcpy_toio(hw->func, IWM_SDIO_DATA_ADDR, buf, - aligned_count); - sdio_release_host(hw->func); - - return ret; -} - -static ssize_t iwm_debugfs_sdio_read(struct file *filp, char __user *buffer, - size_t count, loff_t *ppos) -{ - struct iwm_priv *iwm = filp->private_data; - struct iwm_sdio_priv *hw = iwm_to_if_sdio(iwm); - char *buf; - u8 cccr; - int buf_len = 4096, ret; - size_t len = 0; - - if (*ppos != 0) - return 0; - if (count < sizeof(buf)) - return -ENOSPC; - - buf = kzalloc(buf_len, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - sdio_claim_host(hw->func); - - cccr = sdio_f0_readb(hw->func, SDIO_CCCR_IOEx, &ret); - if (ret) { - IWM_ERR(iwm, "Could not read SDIO_CCCR_IOEx\n"); - goto err; - } - len += snprintf(buf + len, buf_len - len, "CCCR_IOEx: 0x%x\n", cccr); - - cccr = sdio_f0_readb(hw->func, SDIO_CCCR_IORx, &ret); - if (ret) { - IWM_ERR(iwm, "Could not read SDIO_CCCR_IORx\n"); - goto err; - } - len += snprintf(buf + len, buf_len - len, "CCCR_IORx: 0x%x\n", cccr); - - - cccr = sdio_f0_readb(hw->func, SDIO_CCCR_IENx, &ret); - if (ret) { - IWM_ERR(iwm, "Could not read SDIO_CCCR_IENx\n"); - goto err; - } - len += snprintf(buf + len, buf_len - len, "CCCR_IENx: 0x%x\n", cccr); - - - cccr = sdio_f0_readb(hw->func, SDIO_CCCR_INTx, &ret); - if (ret) { - IWM_ERR(iwm, "Could not read SDIO_CCCR_INTx\n"); - goto err; - } - len += snprintf(buf + len, buf_len - len, "CCCR_INTx: 0x%x\n", cccr); - - - cccr = sdio_f0_readb(hw->func, SDIO_CCCR_ABORT, &ret); - if (ret) { - IWM_ERR(iwm, "Could not read SDIO_CCCR_ABORTx\n"); - goto err; - } - len += snprintf(buf + len, buf_len - len, "CCCR_ABORT: 0x%x\n", cccr); - - cccr = sdio_f0_readb(hw->func, SDIO_CCCR_IF, &ret); - if (ret) { - IWM_ERR(iwm, "Could not read SDIO_CCCR_IF\n"); - goto err; - } - len += snprintf(buf + len, buf_len - len, "CCCR_IF: 0x%x\n", cccr); - - - cccr = sdio_f0_readb(hw->func, SDIO_CCCR_CAPS, &ret); - if (ret) { - IWM_ERR(iwm, "Could not read SDIO_CCCR_CAPS\n"); - goto err; - } - len += snprintf(buf + len, buf_len - len, "CCCR_CAPS: 0x%x\n", cccr); - - cccr = sdio_f0_readb(hw->func, SDIO_CCCR_CIS, &ret); - if (ret) { - IWM_ERR(iwm, "Could not read SDIO_CCCR_CIS\n"); - goto err; - } - len += snprintf(buf + len, buf_len - len, "CCCR_CIS: 0x%x\n", cccr); - - ret = simple_read_from_buffer(buffer, len, ppos, buf, buf_len); -err: - sdio_release_host(hw->func); - - kfree(buf); - - return ret; -} - -static const struct file_operations iwm_debugfs_sdio_fops = { - .owner = THIS_MODULE, - .open = simple_open, - .read = iwm_debugfs_sdio_read, - .llseek = default_llseek, -}; - -static void if_sdio_debugfs_init(struct iwm_priv *iwm, struct dentry *parent_dir) -{ - struct iwm_sdio_priv *hw = iwm_to_if_sdio(iwm); - - hw->cccr_dentry = debugfs_create_file("cccr", 0200, - parent_dir, iwm, - &iwm_debugfs_sdio_fops); -} - -static void if_sdio_debugfs_exit(struct iwm_priv *iwm) -{ - struct iwm_sdio_priv *hw = iwm_to_if_sdio(iwm); - - debugfs_remove(hw->cccr_dentry); -} - -static struct iwm_if_ops if_sdio_ops = { - .enable = if_sdio_enable, - .disable = if_sdio_disable, - .send_chunk = if_sdio_send_chunk, - .debugfs_init = if_sdio_debugfs_init, - .debugfs_exit = if_sdio_debugfs_exit, - .umac_name = "iwmc3200wifi-umac-sdio.bin", - .calib_lmac_name = "iwmc3200wifi-calib-sdio.bin", - .lmac_name = "iwmc3200wifi-lmac-sdio.bin", -}; -MODULE_FIRMWARE("iwmc3200wifi-umac-sdio.bin"); -MODULE_FIRMWARE("iwmc3200wifi-calib-sdio.bin"); -MODULE_FIRMWARE("iwmc3200wifi-lmac-sdio.bin"); - -static int iwm_sdio_probe(struct sdio_func *func, - const struct sdio_device_id *id) -{ - struct iwm_priv *iwm; - struct iwm_sdio_priv *hw; - struct device *dev = &func->dev; - int ret; - - /* check if TOP has already initialized the card */ - sdio_claim_host(func); - ret = sdio_enable_func(func); - if (ret) { - dev_err(dev, "wait for TOP to enable the device\n"); - sdio_release_host(func); - return ret; - } - - ret = sdio_set_block_size(func, IWM_SDIO_BLK_SIZE); - - sdio_disable_func(func); - sdio_release_host(func); - - if (ret < 0) { - dev_err(dev, "Failed to set block size: %d\n", ret); - return ret; - } - - iwm = iwm_if_alloc(sizeof(struct iwm_sdio_priv), dev, &if_sdio_ops); - if (IS_ERR(iwm)) { - dev_err(dev, "allocate SDIO interface failed\n"); - return PTR_ERR(iwm); - } - - hw = iwm_private(iwm); - hw->iwm = iwm; - - iwm_debugfs_init(iwm); - - sdio_set_drvdata(func, hw); - - hw->func = func; - hw->blk_size = IWM_SDIO_BLK_SIZE; - - hw->isr_wq = create_singlethread_workqueue(KBUILD_MODNAME "_sdio"); - if (!hw->isr_wq) { - ret = -ENOMEM; - goto debugfs_exit; - } - - INIT_WORK(&hw->isr_worker, iwm_sdio_isr_worker); - - ret = iwm_if_add(iwm); - if (ret) { - dev_err(dev, "add SDIO interface failed\n"); - goto destroy_wq; - } - - dev_info(dev, "IWM SDIO probe\n"); - - return 0; - - destroy_wq: - destroy_workqueue(hw->isr_wq); - debugfs_exit: - iwm_debugfs_exit(iwm); - iwm_if_free(iwm); - return ret; -} - -static void iwm_sdio_remove(struct sdio_func *func) -{ - struct iwm_sdio_priv *hw = sdio_get_drvdata(func); - struct iwm_priv *iwm = hw_to_iwm(hw); - struct device *dev = &func->dev; - - iwm_if_remove(iwm); - destroy_workqueue(hw->isr_wq); - iwm_debugfs_exit(iwm); - iwm_if_free(iwm); - - sdio_set_drvdata(func, NULL); - - dev_info(dev, "IWM SDIO remove\n"); -} - -static const struct sdio_device_id iwm_sdio_ids[] = { - /* Global/AGN SKU */ - { SDIO_DEVICE(SDIO_VENDOR_ID_INTEL, 0x1403) }, - /* BGN SKU */ - { SDIO_DEVICE(SDIO_VENDOR_ID_INTEL, 0x1408) }, - { /* end: all zeroes */ }, -}; -MODULE_DEVICE_TABLE(sdio, iwm_sdio_ids); - -static struct sdio_driver iwm_sdio_driver = { - .name = "iwm_sdio", - .id_table = iwm_sdio_ids, - .probe = iwm_sdio_probe, - .remove = iwm_sdio_remove, -}; - -static int __init iwm_sdio_init_module(void) -{ - return sdio_register_driver(&iwm_sdio_driver); -} - -static void __exit iwm_sdio_exit_module(void) -{ - sdio_unregister_driver(&iwm_sdio_driver); -} - -module_init(iwm_sdio_init_module); -module_exit(iwm_sdio_exit_module); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR(IWM_COPYRIGHT " " IWM_AUTHOR); |
