+++ /dev/null
-/*
- * linux/drivers/net/wireless/libertas/if_sdio.c
- *
- * Copyright 2007-2008 Pierre Ossman
- *
- * Inspired by if_cs.c, Copyright 2007 Holger Schurig
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This hardware has more or less no CMD53 support, so all registers
- * must be accessed using sdio_readb()/sdio_writeb().
- *
- * Transfers must be in one transaction or the firmware goes bonkers.
- * This means that the transfer must either be small enough to do a
- * byte based transfer or it must be padded to a multiple of the
- * current block size.
- *
- * As SDIO is still new to the kernel, it is unfortunately common with
- * bugs in the host controllers related to that. One such bug is that
- * controllers cannot do transfers that aren't a multiple of 4 bytes.
- * If you don't have time to fix the host controller driver, you can
- * work around the problem by modifying if_sdio_host_to_card() and
- * if_sdio_card_to_host() to pad the data.
- */
-
-#include <linux/kernel.h>
-#include <linux/moduleparam.h>
-#include <linux/firmware.h>
-#include <linux/netdevice.h>
-#include <linux/delay.h>
-#include <linux/mmc/card.h>
-#include <linux/mmc/sdio_func.h>
-#include <linux/mmc/sdio_ids.h>
-
-#include "host.h"
-#include "decl.h"
-#include "defs.h"
-#include "dev.h"
-#include "cmd.h"
-#include "if_sdio.h"
-
-/* The if_sdio_remove() callback function is called when
- * user removes this module from kernel space or ejects
- * the card from the slot. The driver handles these 2 cases
- * differently for SD8688 combo chip.
- * If the user is removing the module, the FUNC_SHUTDOWN
- * command for SD8688 is sent to the firmware.
- * If the card is removed, there is no need to send this command.
- *
- * The variable 'user_rmmod' is used to distinguish these two
- * scenarios. This flag is initialized as FALSE in case the card
- * is removed, and will be set to TRUE for module removal when
- * module_exit function is called.
- */
-static u8 user_rmmod;
-
-static char *lbs_helper_name = NULL;
-module_param_named(helper_name, lbs_helper_name, charp, 0644);
-
-static char *lbs_fw_name = NULL;
-module_param_named(fw_name, lbs_fw_name, charp, 0644);
-
-static const struct sdio_device_id if_sdio_ids[] = {
- { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL,
- SDIO_DEVICE_ID_MARVELL_LIBERTAS) },
- { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL,
- SDIO_DEVICE_ID_MARVELL_8688WLAN) },
- { /* end: all zeroes */ },
-};
-
-MODULE_DEVICE_TABLE(sdio, if_sdio_ids);
-
-struct if_sdio_model {
- int model;
- const char *helper;
- const char *firmware;
-};
-
-static struct if_sdio_model if_sdio_models[] = {
- {
- /* 8385 */
- .model = IF_SDIO_MODEL_8385,
- .helper = "sd8385_helper.bin",
- .firmware = "sd8385.bin",
- },
- {
- /* 8686 */
- .model = IF_SDIO_MODEL_8686,
- .helper = "sd8686_helper.bin",
- .firmware = "sd8686.bin",
- },
- {
- /* 8688 */
- .model = IF_SDIO_MODEL_8688,
- .helper = "sd8688_helper.bin",
- .firmware = "sd8688.bin",
- },
-};
-
-struct if_sdio_packet {
- struct if_sdio_packet *next;
- u16 nb;
- u8 buffer[0] __attribute__((aligned(4)));
-};
-
-struct if_sdio_card {
- struct sdio_func *func;
- struct lbs_private *priv;
-
- int model;
- unsigned long ioport;
- unsigned int scratch_reg;
-
- const char *helper;
- const char *firmware;
-
- u8 buffer[65536];
-
- spinlock_t lock;
- struct if_sdio_packet *packets;
-
- struct workqueue_struct *workqueue;
- struct work_struct packet_worker;
-
- u8 rx_unit;
-};
-
-/********************************************************************/
-/* I/O */
-/********************************************************************/
-
-/*
- * For SD8385/SD8686, this function reads firmware status after
- * the image is downloaded, or reads RX packet length when
- * interrupt (with IF_SDIO_H_INT_UPLD bit set) is received.
- * For SD8688, this function reads firmware status only.
- */
-static u16 if_sdio_read_scratch(struct if_sdio_card *card, int *err)
-{
- int ret;
- u16 scratch;
-
- scratch = sdio_readb(card->func, card->scratch_reg, &ret);
- if (!ret)
- scratch |= sdio_readb(card->func, card->scratch_reg + 1,
- &ret) << 8;
-
- if (err)
- *err = ret;
-
- if (ret)
- return 0xffff;
-
- return scratch;
-}
-
-static u8 if_sdio_read_rx_unit(struct if_sdio_card *card)
-{
- int ret;
- u8 rx_unit;
-
- rx_unit = sdio_readb(card->func, IF_SDIO_RX_UNIT, &ret);
-
- if (ret)
- rx_unit = 0;
-
- return rx_unit;
-}
-
-static u16 if_sdio_read_rx_len(struct if_sdio_card *card, int *err)
-{
- int ret;
- u16 rx_len;
-
- switch (card->model) {
- case IF_SDIO_MODEL_8385:
- case IF_SDIO_MODEL_8686:
- rx_len = if_sdio_read_scratch(card, &ret);
- break;
- case IF_SDIO_MODEL_8688:
- default: /* for newer chipsets */
- rx_len = sdio_readb(card->func, IF_SDIO_RX_LEN, &ret);
- if (!ret)
- rx_len <<= card->rx_unit;
- else
- rx_len = 0xffff; /* invalid length */
-
- break;
- }
-
- if (err)
- *err = ret;
-
- return rx_len;
-}
-
-static int if_sdio_handle_cmd(struct if_sdio_card *card,
- u8 *buffer, unsigned size)
-{
- struct lbs_private *priv = card->priv;
- int ret;
- unsigned long flags;
- u8 i;
-
- lbs_deb_enter(LBS_DEB_SDIO);
-
- if (size > LBS_CMD_BUFFER_SIZE) {
- lbs_deb_sdio("response packet too large (%d bytes)\n",
- (int)size);
- ret = -E2BIG;
- goto out;
- }
-
- spin_lock_irqsave(&priv->driver_lock, flags);
-
- i = (priv->resp_idx == 0) ? 1 : 0;
- BUG_ON(priv->resp_len[i]);
- priv->resp_len[i] = size;
- memcpy(priv->resp_buf[i], buffer, size);
- lbs_notify_command_response(priv, i);
-
- spin_unlock_irqrestore(&card->priv->driver_lock, flags);
-
- ret = 0;
-
-out:
- lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
- return ret;
-}
-
-static int if_sdio_handle_data(struct if_sdio_card *card,
- u8 *buffer, unsigned size)
-{
- int ret;
- struct sk_buff *skb;
- char *data;
-
- lbs_deb_enter(LBS_DEB_SDIO);
-
- if (size > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) {
- lbs_deb_sdio("response packet too large (%d bytes)\n",
- (int)size);
- ret = -E2BIG;
- goto out;
- }
-
- skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + NET_IP_ALIGN);
- if (!skb) {
- ret = -ENOMEM;
- goto out;
- }
-
- skb_reserve(skb, NET_IP_ALIGN);
-
- data = skb_put(skb, size);
-
- memcpy(data, buffer, size);
-
- lbs_process_rxed_packet(card->priv, skb);
-
- ret = 0;
-
-out:
- lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
-
- return ret;
-}
-
-static int if_sdio_handle_event(struct if_sdio_card *card,
- u8 *buffer, unsigned size)
-{
- int ret;
- u32 event;
-
- lbs_deb_enter(LBS_DEB_SDIO);
-
- if (card->model == IF_SDIO_MODEL_8385) {
- event = sdio_readb(card->func, IF_SDIO_EVENT, &ret);
- if (ret)
- goto out;
-
- /* right shift 3 bits to get the event id */
- event >>= 3;
- } else {
- if (size < 4) {
- lbs_deb_sdio("event packet too small (%d bytes)\n",
- (int)size);
- ret = -EINVAL;
- goto out;
- }
- event = buffer[3] << 24;
- event |= buffer[2] << 16;
- event |= buffer[1] << 8;
- event |= buffer[0] << 0;
- }
-
- lbs_queue_event(card->priv, event & 0xFF);
- ret = 0;
-
-out:
- lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
-
- return ret;
-}
-
-static int if_sdio_card_to_host(struct if_sdio_card *card)
-{
- int ret;
- u8 status;
- u16 size, type, chunk;
- unsigned long timeout;
-
- lbs_deb_enter(LBS_DEB_SDIO);
-
- size = if_sdio_read_rx_len(card, &ret);
- if (ret)
- goto out;
-
- if (size < 4) {
- lbs_deb_sdio("invalid packet size (%d bytes) from firmware\n",
- (int)size);
- ret = -EINVAL;
- goto out;
- }
-
- timeout = jiffies + HZ;
- while (1) {
- status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
- if (ret)
- goto out;
- if (status & IF_SDIO_IO_RDY)
- break;
- if (time_after(jiffies, timeout)) {
- ret = -ETIMEDOUT;
- goto out;
- }
- mdelay(1);
- }
-
- /*
- * The transfer must be in one transaction or the firmware
- * goes suicidal. There's no way to guarantee that for all
- * controllers, but we can at least try.
- */
- chunk = sdio_align_size(card->func, size);
-
- ret = sdio_readsb(card->func, card->buffer, card->ioport, chunk);
- if (ret)
- goto out;
-
- chunk = card->buffer[0] | (card->buffer[1] << 8);
- type = card->buffer[2] | (card->buffer[3] << 8);
-
- lbs_deb_sdio("packet of type %d and size %d bytes\n",
- (int)type, (int)chunk);
-
- if (chunk > size) {
- lbs_deb_sdio("packet fragment (%d > %d)\n",
- (int)chunk, (int)size);
- ret = -EINVAL;
- goto out;
- }
-
- if (chunk < size) {
- lbs_deb_sdio("packet fragment (%d < %d)\n",
- (int)chunk, (int)size);
- }
-
- switch (type) {
- case MVMS_CMD:
- ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4);
- if (ret)
- goto out;
- break;
- case MVMS_DAT:
- ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4);
- if (ret)
- goto out;
- break;
- case MVMS_EVENT:
- ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4);
- if (ret)
- goto out;
- break;
- default:
- lbs_deb_sdio("invalid type (%d) from firmware\n",
- (int)type);
- ret = -EINVAL;
- goto out;
- }
-
-out:
- if (ret)
- lbs_pr_err("problem fetching packet from firmware\n");
-
- lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
-
- return ret;
-}
-
-static void if_sdio_host_to_card_worker(struct work_struct *work)
-{
- struct if_sdio_card *card;
- struct if_sdio_packet *packet;
- unsigned long timeout;
- u8 status;
- int ret;
- unsigned long flags;
-
- lbs_deb_enter(LBS_DEB_SDIO);
-
- card = container_of(work, struct if_sdio_card, packet_worker);
-
- while (1) {
- spin_lock_irqsave(&card->lock, flags);
- packet = card->packets;
- if (packet)
- card->packets = packet->next;
- spin_unlock_irqrestore(&card->lock, flags);
-
- if (!packet)
- break;
-
- sdio_claim_host(card->func);
-
- timeout = jiffies + HZ;
- while (1) {
- status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
- if (ret)
- goto release;
- if (status & IF_SDIO_IO_RDY)
- break;
- if (time_after(jiffies, timeout)) {
- ret = -ETIMEDOUT;
- goto release;
- }
- mdelay(1);
- }
-
- ret = sdio_writesb(card->func, card->ioport,
- packet->buffer, packet->nb);
- if (ret)
- goto release;
-release:
- sdio_release_host(card->func);
-
- kfree(packet);
- }
-
- lbs_deb_leave(LBS_DEB_SDIO);
-}
-
-/********************************************************************/
-/* Firmware */
-/********************************************************************/
-
-static int if_sdio_prog_helper(struct if_sdio_card *card)
-{
- int ret;
- u8 status;
- const struct firmware *fw;
- unsigned long timeout;
- u8 *chunk_buffer;
- u32 chunk_size;
- const u8 *firmware;
- size_t size;
-
- lbs_deb_enter(LBS_DEB_SDIO);
-
- ret = request_firmware(&fw, card->helper, &card->func->dev);
- if (ret) {
- lbs_pr_err("can't load helper firmware\n");
- goto out;
- }
-
- chunk_buffer = kzalloc(64, GFP_KERNEL);
- if (!chunk_buffer) {
- ret = -ENOMEM;
- goto release_fw;
- }
-
- sdio_claim_host(card->func);
-
- ret = sdio_set_block_size(card->func, 32);
- if (ret)
- goto release;
-
- firmware = fw->data;
- size = fw->size;
-
- while (size) {
- timeout = jiffies + HZ;
- while (1) {
- status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
- if (ret)
- goto release;
- if ((status & IF_SDIO_IO_RDY) &&
- (status & IF_SDIO_DL_RDY))
- break;
- if (time_after(jiffies, timeout)) {
- ret = -ETIMEDOUT;
- goto release;
- }
- mdelay(1);
- }
-
- chunk_size = min(size, (size_t)60);
-
- *((__le32*)chunk_buffer) = cpu_to_le32(chunk_size);
- memcpy(chunk_buffer + 4, firmware, chunk_size);
-/*
- lbs_deb_sdio("sending %d bytes chunk\n", chunk_size);
-*/
- ret = sdio_writesb(card->func, card->ioport,
- chunk_buffer, 64);
- if (ret)
- goto release;
-
- firmware += chunk_size;
- size -= chunk_size;
- }
-
- /* an empty block marks the end of the transfer */
- memset(chunk_buffer, 0, 4);
- ret = sdio_writesb(card->func, card->ioport, chunk_buffer, 64);
- if (ret)
- goto release;
-
- lbs_deb_sdio("waiting for helper to boot...\n");
-
- /* wait for the helper to boot by looking at the size register */
- timeout = jiffies + HZ;
- while (1) {
- u16 req_size;
-
- req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
- if (ret)
- goto release;
-
- req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
- if (ret)
- goto release;
-
- if (req_size != 0)
- break;
-
- if (time_after(jiffies, timeout)) {
- ret = -ETIMEDOUT;
- goto release;
- }
-
- msleep(10);
- }
-
- ret = 0;
-
-release:
- sdio_release_host(card->func);
- kfree(chunk_buffer);
-release_fw:
- release_firmware(fw);
-
-out:
- if (ret)
- lbs_pr_err("failed to load helper firmware\n");
-
- lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
-
- return ret;
-}
-
-static int if_sdio_prog_real(struct if_sdio_card *card)
-{
- int ret;
- u8 status;
- const struct firmware *fw;
- unsigned long timeout;
- u8 *chunk_buffer;
- u32 chunk_size;
- const u8 *firmware;
- size_t size, req_size;
-
- lbs_deb_enter(LBS_DEB_SDIO);
-
- ret = request_firmware(&fw, card->firmware, &card->func->dev);
- if (ret) {
- lbs_pr_err("can't load firmware\n");
- goto out;
- }
-
- chunk_buffer = kzalloc(512, GFP_KERNEL);
- if (!chunk_buffer) {
- ret = -ENOMEM;
- goto release_fw;
- }
-
- sdio_claim_host(card->func);
-
- ret = sdio_set_block_size(card->func, 32);
- if (ret)
- goto release;
-
- firmware = fw->data;
- size = fw->size;
-
- while (size) {
- timeout = jiffies + HZ;
- while (1) {
- status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
- if (ret)
- goto release;
- if ((status & IF_SDIO_IO_RDY) &&
- (status & IF_SDIO_DL_RDY))
- break;
- if (time_after(jiffies, timeout)) {
- ret = -ETIMEDOUT;
- goto release;
- }
- mdelay(1);
- }
-
- req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
- if (ret)
- goto release;
-
- req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
- if (ret)
- goto release;
-/*
- lbs_deb_sdio("firmware wants %d bytes\n", (int)req_size);
-*/
- if (req_size == 0) {
- lbs_deb_sdio("firmware helper gave up early\n");
- ret = -EIO;
- goto release;
- }
-
- if (req_size & 0x01) {
- lbs_deb_sdio("firmware helper signalled error\n");
- ret = -EIO;
- goto release;
- }
-
- if (req_size > size)
- req_size = size;
-
- while (req_size) {
- chunk_size = min(req_size, (size_t)512);
-
- memcpy(chunk_buffer, firmware, chunk_size);
-/*
- lbs_deb_sdio("sending %d bytes (%d bytes) chunk\n",
- chunk_size, (chunk_size + 31) / 32 * 32);
-*/
- ret = sdio_writesb(card->func, card->ioport,
- chunk_buffer, roundup(chunk_size, 32));
- if (ret)
- goto release;
-
- firmware += chunk_size;
- size -= chunk_size;
- req_size -= chunk_size;
- }
- }
-
- ret = 0;
-
- lbs_deb_sdio("waiting for firmware to boot...\n");
-
- /* wait for the firmware to boot */
- timeout = jiffies + HZ;
- while (1) {
- u16 scratch;
-
- scratch = if_sdio_read_scratch(card, &ret);
- if (ret)
- goto release;
-
- if (scratch == IF_SDIO_FIRMWARE_OK)
- break;
-
- if (time_after(jiffies, timeout)) {
- ret = -ETIMEDOUT;
- goto release;
- }
-
- msleep(10);
- }
-
- ret = 0;
-
-release:
- sdio_release_host(card->func);
- kfree(chunk_buffer);
-release_fw:
- release_firmware(fw);
-
-out:
- if (ret)
- lbs_pr_err("failed to load firmware\n");
-
- lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
-
- return ret;
-}
-
-static int if_sdio_prog_firmware(struct if_sdio_card *card)
-{
- int ret;
- u16 scratch;
-
- lbs_deb_enter(LBS_DEB_SDIO);
-
- sdio_claim_host(card->func);
- scratch = if_sdio_read_scratch(card, &ret);
- sdio_release_host(card->func);
-
- if (ret)
- goto out;
-
- lbs_deb_sdio("firmware status = %#x\n", scratch);
-
- if (scratch == IF_SDIO_FIRMWARE_OK) {
- lbs_deb_sdio("firmware already loaded\n");
- goto success;
- }
-
- ret = if_sdio_prog_helper(card);
- if (ret)
- goto out;
-
- ret = if_sdio_prog_real(card);
- if (ret)
- goto out;
-
-success:
- sdio_claim_host(card->func);
- sdio_set_block_size(card->func, IF_SDIO_BLOCK_SIZE);
- sdio_release_host(card->func);
- ret = 0;
-
-out:
- lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
-
- return ret;
-}
-
-/*******************************************************************/
-/* Libertas callbacks */
-/*******************************************************************/
-
-static int if_sdio_host_to_card(struct lbs_private *priv,
- u8 type, u8 *buf, u16 nb)
-{
- int ret;
- struct if_sdio_card *card;
- struct if_sdio_packet *packet, *cur;
- u16 size;
- unsigned long flags;
-
- lbs_deb_enter_args(LBS_DEB_SDIO, "type %d, bytes %d", type, nb);
-
- card = priv->card;
-
- if (nb > (65536 - sizeof(struct if_sdio_packet) - 4)) {
- ret = -EINVAL;
- goto out;
- }
-
- /*
- * The transfer must be in one transaction or the firmware
- * goes suicidal. There's no way to guarantee that for all
- * controllers, but we can at least try.
- */
- size = sdio_align_size(card->func, nb + 4);
-
- packet = kzalloc(sizeof(struct if_sdio_packet) + size,
- GFP_ATOMIC);
- if (!packet) {
- ret = -ENOMEM;
- goto out;
- }
-
- packet->next = NULL;
- packet->nb = size;
-
- /*
- * SDIO specific header.
- */
- packet->buffer[0] = (nb + 4) & 0xff;
- packet->buffer[1] = ((nb + 4) >> 8) & 0xff;
- packet->buffer[2] = type;
- packet->buffer[3] = 0;
-
- memcpy(packet->buffer + 4, buf, nb);
-
- spin_lock_irqsave(&card->lock, flags);
-
- if (!card->packets)
- card->packets = packet;
- else {
- cur = card->packets;
- while (cur->next)
- cur = cur->next;
- cur->next = packet;
- }
-
- switch (type) {
- case MVMS_CMD:
- priv->dnld_sent = DNLD_CMD_SENT;
- break;
- case MVMS_DAT:
- priv->dnld_sent = DNLD_DATA_SENT;
- break;
- default:
- lbs_deb_sdio("unknown packet type %d\n", (int)type);
- }
-
- spin_unlock_irqrestore(&card->lock, flags);
-
- queue_work(card->workqueue, &card->packet_worker);
-
- ret = 0;
-
-out:
- lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
-
- return ret;
-}
-
-/*******************************************************************/
-/* SDIO callbacks */
-/*******************************************************************/
-
-static void if_sdio_interrupt(struct sdio_func *func)
-{
- int ret;
- struct if_sdio_card *card;
- u8 cause;
-
- lbs_deb_enter(LBS_DEB_SDIO);
-
- card = sdio_get_drvdata(func);
-
- cause = sdio_readb(card->func, IF_SDIO_H_INT_STATUS, &ret);
- if (ret)
- goto out;
-
- lbs_deb_sdio("interrupt: 0x%X\n", (unsigned)cause);
-
- sdio_writeb(card->func, ~cause, IF_SDIO_H_INT_STATUS, &ret);
- if (ret)
- goto out;
-
- /*
- * Ignore the define name, this really means the card has
- * successfully received the command.
- */
- if (cause & IF_SDIO_H_INT_DNLD)
- lbs_host_to_card_done(card->priv);
-
-
- if (cause & IF_SDIO_H_INT_UPLD) {
- ret = if_sdio_card_to_host(card);
- if (ret)
- goto out;
- }
-
- ret = 0;
-
-out:
- lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
-}
-
-static int if_sdio_probe(struct sdio_func *func,
- const struct sdio_device_id *id)
-{
- struct if_sdio_card *card;
- struct lbs_private *priv;
- int ret, i;
- unsigned int model;
- struct if_sdio_packet *packet;
-
- lbs_deb_enter(LBS_DEB_SDIO);
-
- for (i = 0;i < func->card->num_info;i++) {
- if (sscanf(func->card->info[i],
- "802.11 SDIO ID: %x", &model) == 1)
- break;
- if (sscanf(func->card->info[i],
- "ID: %x", &model) == 1)
- break;
- if (!strcmp(func->card->info[i], "IBIS Wireless SDIO Card")) {
- model = IF_SDIO_MODEL_8385;
- break;
- }
- }
-
- if (i == func->card->num_info) {
- lbs_pr_err("unable to identify card model\n");
- return -ENODEV;
- }
-
- card = kzalloc(sizeof(struct if_sdio_card), GFP_KERNEL);
- if (!card)
- return -ENOMEM;
-
- card->func = func;
- card->model = model;
-
- switch (card->model) {
- case IF_SDIO_MODEL_8385:
- card->scratch_reg = IF_SDIO_SCRATCH_OLD;
- break;
- case IF_SDIO_MODEL_8686:
- card->scratch_reg = IF_SDIO_SCRATCH;
- break;
- case IF_SDIO_MODEL_8688:
- default: /* for newer chipsets */
- card->scratch_reg = IF_SDIO_FW_STATUS;
- break;
- }
-
- spin_lock_init(&card->lock);
- card->workqueue = create_workqueue("libertas_sdio");
- INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker);
-
- for (i = 0;i < ARRAY_SIZE(if_sdio_models);i++) {
- if (card->model == if_sdio_models[i].model)
- break;
- }
-
- if (i == ARRAY_SIZE(if_sdio_models)) {
- lbs_pr_err("unkown card model 0x%x\n", card->model);
- ret = -ENODEV;
- goto free;
- }
-
- card->helper = if_sdio_models[i].helper;
- card->firmware = if_sdio_models[i].firmware;
-
- if (lbs_helper_name) {
- lbs_deb_sdio("overriding helper firmware: %s\n",
- lbs_helper_name);
- card->helper = lbs_helper_name;
- }
-
- if (lbs_fw_name) {
- lbs_deb_sdio("overriding firmware: %s\n", lbs_fw_name);
- card->firmware = lbs_fw_name;
- }
-
- sdio_claim_host(func);
-
- ret = sdio_enable_func(func);
- if (ret)
- goto release;
-
- ret = sdio_claim_irq(func, if_sdio_interrupt);
- if (ret)
- goto disable;
-
- card->ioport = sdio_readb(func, IF_SDIO_IOPORT, &ret);
- if (ret)
- goto release_int;
-
- card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 1, &ret) << 8;
- if (ret)
- goto release_int;
-
- card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 2, &ret) << 16;
- if (ret)
- goto release_int;
-
- sdio_release_host(func);
-
- sdio_set_drvdata(func, card);
-
- lbs_deb_sdio("class = 0x%X, vendor = 0x%X, "
- "device = 0x%X, model = 0x%X, ioport = 0x%X\n",
- func->class, func->vendor, func->device,
- model, (unsigned)card->ioport);
-
- ret = if_sdio_prog_firmware(card);
- if (ret)
- goto reclaim;
-
- priv = lbs_add_card(card, &func->dev);
- if (!priv) {
- ret = -ENOMEM;
- goto reclaim;
- }
-
- card->priv = priv;
-
- priv->card = card;
- priv->hw_host_to_card = if_sdio_host_to_card;
-
- priv->fw_ready = 1;
-
- sdio_claim_host(func);
-
- /*
- * Get rx_unit if the chip is SD8688 or newer.
- * SD8385 & SD8686 do not have rx_unit.
- */
- if ((card->model != IF_SDIO_MODEL_8385)
- && (card->model != IF_SDIO_MODEL_8686))
- card->rx_unit = if_sdio_read_rx_unit(card);
- else
- card->rx_unit = 0;
-
- /*
- * Enable interrupts now that everything is set up
- */
- sdio_writeb(func, 0x0f, IF_SDIO_H_INT_MASK, &ret);
- sdio_release_host(func);
- if (ret)
- goto reclaim;
-
- /*
- * FUNC_INIT is required for SD8688 WLAN/BT multiple functions
- */
- if (card->model == IF_SDIO_MODEL_8688) {
- struct cmd_header cmd;
-
- memset(&cmd, 0, sizeof(cmd));
-
- lbs_deb_sdio("send function INIT command\n");
- if (__lbs_cmd(priv, CMD_FUNC_INIT, &cmd, sizeof(cmd),
- lbs_cmd_copyback, (unsigned long) &cmd))
- lbs_pr_alert("CMD_FUNC_INIT cmd failed\n");
- }
-
- ret = lbs_start_card(priv);
- if (ret)
- goto err_activate_card;
-
-out:
- lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
-
- return ret;
-
-err_activate_card:
- flush_workqueue(card->workqueue);
- lbs_remove_card(priv);
-reclaim:
- sdio_claim_host(func);
-release_int:
- sdio_release_irq(func);
-disable:
- sdio_disable_func(func);
-release:
- sdio_release_host(func);
-free:
- destroy_workqueue(card->workqueue);
- while (card->packets) {
- packet = card->packets;
- card->packets = card->packets->next;
- kfree(packet);
- }
-
- kfree(card);
-
- goto out;
-}
-
-static void if_sdio_remove(struct sdio_func *func)
-{
- struct if_sdio_card *card;
- struct if_sdio_packet *packet;
-
- lbs_deb_enter(LBS_DEB_SDIO);
-
- card = sdio_get_drvdata(func);
-
- if (user_rmmod && (card->model == IF_SDIO_MODEL_8688)) {
- /*
- * FUNC_SHUTDOWN is required for SD8688 WLAN/BT
- * multiple functions
- */
- struct cmd_header cmd;
-
- memset(&cmd, 0, sizeof(cmd));
-
- lbs_deb_sdio("send function SHUTDOWN command\n");
- if (__lbs_cmd(card->priv, CMD_FUNC_SHUTDOWN,
- &cmd, sizeof(cmd), lbs_cmd_copyback,
- (unsigned long) &cmd))
- lbs_pr_alert("CMD_FUNC_SHUTDOWN cmd failed\n");
- }
-
-
- lbs_deb_sdio("call remove card\n");
- lbs_stop_card(card->priv);
- lbs_remove_card(card->priv);
- card->priv->surpriseremoved = 1;
-
- flush_workqueue(card->workqueue);
- destroy_workqueue(card->workqueue);
-
- sdio_claim_host(func);
- sdio_release_irq(func);
- sdio_disable_func(func);
- sdio_release_host(func);
-
- while (card->packets) {
- packet = card->packets;
- card->packets = card->packets->next;
- kfree(packet);
- }
-
- kfree(card);
-
- lbs_deb_leave(LBS_DEB_SDIO);
-}
-
-static struct sdio_driver if_sdio_driver = {
- .name = "libertas_sdio",
- .id_table = if_sdio_ids,
- .probe = if_sdio_probe,
- .remove = if_sdio_remove,
-};
-
-/*******************************************************************/
-/* Module functions */
-/*******************************************************************/
-
-static int __init if_sdio_init_module(void)
-{
- int ret = 0;
-
- lbs_deb_enter(LBS_DEB_SDIO);
-
- printk(KERN_INFO "libertas_sdio: Libertas SDIO driver\n");
- printk(KERN_INFO "libertas_sdio: Copyright Pierre Ossman\n");
-
- ret = sdio_register_driver(&if_sdio_driver);
-
- /* Clear the flag in case user removes the card. */
- user_rmmod = 0;
-
- lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
-
- return ret;
-}
-
-static void __exit if_sdio_exit_module(void)
-{
- lbs_deb_enter(LBS_DEB_SDIO);
-
- /* Set the flag as user is removing this module. */
- user_rmmod = 1;
-
- sdio_unregister_driver(&if_sdio_driver);
-
- lbs_deb_leave(LBS_DEB_SDIO);
-}
-
-module_init(if_sdio_init_module);
-module_exit(if_sdio_exit_module);
-
-MODULE_DESCRIPTION("Libertas SDIO WLAN Driver");
-MODULE_AUTHOR("Pierre Ossman");
-MODULE_LICENSE("GPL");
projects / firefly-linux-kernel-4.4.55.git / commitdiff