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path: root/drivers/net/wireless/iwmc3200wifi/sdio.c
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Diffstat (limited to 'drivers/net/wireless/iwmc3200wifi/sdio.c')
-rw-r--r--drivers/net/wireless/iwmc3200wifi/sdio.c509
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 0042f204b07f..000000000000
--- 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);