1073 lines
21 KiB
C
1073 lines
21 KiB
C
/*
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* linux/drivers/net/wireless/libertas/if_sdio.c
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*
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* Copyright 2007 Pierre Ossman
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*
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* Inspired by if_cs.c, Copyright 2007 Holger Schurig
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This hardware has more or less no CMD53 support, so all registers
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* must be accessed using sdio_readb()/sdio_writeb().
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*
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* Transfers must be in one transaction or the firmware goes bonkers.
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* This means that the transfer must either be small enough to do a
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* byte based transfer or it must be padded to a multiple of the
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* current block size.
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*
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* As SDIO is still new to the kernel, it is unfortunately common with
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* bugs in the host controllers related to that. One such bug is that
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* controllers cannot do transfers that aren't a multiple of 4 bytes.
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* If you don't have time to fix the host controller driver, you can
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* work around the problem by modifying if_sdio_host_to_card() and
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* if_sdio_card_to_host() to pad the data.
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*/
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#include <linux/moduleparam.h>
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#include <linux/firmware.h>
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#include <linux/netdevice.h>
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#include <linux/delay.h>
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#include <linux/mmc/card.h>
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#include <linux/mmc/sdio_func.h>
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#include <linux/mmc/sdio_ids.h>
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#include "host.h"
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#include "decl.h"
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#include "defs.h"
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#include "dev.h"
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#include "if_sdio.h"
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static char *lbs_helper_name = NULL;
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module_param_named(helper_name, lbs_helper_name, charp, 0644);
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static char *lbs_fw_name = NULL;
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module_param_named(fw_name, lbs_fw_name, charp, 0644);
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static const struct sdio_device_id if_sdio_ids[] = {
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{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_LIBERTAS) },
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{ /* end: all zeroes */ },
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};
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MODULE_DEVICE_TABLE(sdio, if_sdio_ids);
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struct if_sdio_model {
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int model;
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const char *helper;
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const char *firmware;
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};
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static struct if_sdio_model if_sdio_models[] = {
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{
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/* 8385 */
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.model = 0x04,
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.helper = "sd8385_helper.bin",
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.firmware = "sd8385.bin",
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},
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{
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/* 8686 */
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.model = 0x0B,
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.helper = "sd8686_helper.bin",
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.firmware = "sd8686.bin",
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},
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};
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struct if_sdio_packet {
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struct if_sdio_packet *next;
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u16 nb;
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u8 buffer[0] __attribute__((aligned(4)));
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};
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struct if_sdio_card {
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struct sdio_func *func;
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struct lbs_private *priv;
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int model;
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unsigned long ioport;
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const char *helper;
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const char *firmware;
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u8 buffer[65536];
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u8 int_cause;
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u32 event;
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spinlock_t lock;
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struct if_sdio_packet *packets;
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struct work_struct packet_worker;
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};
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/********************************************************************/
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/* I/O */
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/********************************************************************/
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static u16 if_sdio_read_scratch(struct if_sdio_card *card, int *err)
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{
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int ret, reg;
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u16 scratch;
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if (card->model == 0x04)
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reg = IF_SDIO_SCRATCH_OLD;
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else
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reg = IF_SDIO_SCRATCH;
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scratch = sdio_readb(card->func, reg, &ret);
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if (!ret)
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scratch |= sdio_readb(card->func, reg + 1, &ret) << 8;
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if (err)
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*err = ret;
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if (ret)
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return 0xffff;
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return scratch;
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}
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static int if_sdio_handle_cmd(struct if_sdio_card *card,
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u8 *buffer, unsigned size)
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{
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int ret;
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unsigned long flags;
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lbs_deb_enter(LBS_DEB_SDIO);
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spin_lock_irqsave(&card->priv->driver_lock, flags);
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if (size > LBS_CMD_BUFFER_SIZE) {
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lbs_deb_sdio("response packet too large (%d bytes)\n",
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(int)size);
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ret = -E2BIG;
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goto out;
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}
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memcpy(card->priv->upld_buf, buffer, size);
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card->priv->upld_len = size;
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card->int_cause |= MRVDRV_CMD_UPLD_RDY;
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lbs_interrupt(card->priv);
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ret = 0;
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out:
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spin_unlock_irqrestore(&card->priv->driver_lock, flags);
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lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
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return ret;
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}
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static int if_sdio_handle_data(struct if_sdio_card *card,
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u8 *buffer, unsigned size)
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{
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int ret;
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struct sk_buff *skb;
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char *data;
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lbs_deb_enter(LBS_DEB_SDIO);
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if (size > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) {
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lbs_deb_sdio("response packet too large (%d bytes)\n",
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(int)size);
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ret = -E2BIG;
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goto out;
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}
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skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + NET_IP_ALIGN);
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if (!skb) {
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ret = -ENOMEM;
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goto out;
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}
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skb_reserve(skb, NET_IP_ALIGN);
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data = skb_put(skb, size);
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memcpy(data, buffer, size);
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lbs_process_rxed_packet(card->priv, skb);
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ret = 0;
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out:
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lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
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return ret;
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}
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static int if_sdio_handle_event(struct if_sdio_card *card,
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u8 *buffer, unsigned size)
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{
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int ret;
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unsigned long flags;
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u32 event;
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lbs_deb_enter(LBS_DEB_SDIO);
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if (card->model == 0x04) {
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event = sdio_readb(card->func, IF_SDIO_EVENT, &ret);
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if (ret)
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goto out;
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} else {
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if (size < 4) {
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lbs_deb_sdio("event packet too small (%d bytes)\n",
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(int)size);
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ret = -EINVAL;
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goto out;
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}
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event = buffer[3] << 24;
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event |= buffer[2] << 16;
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event |= buffer[1] << 8;
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event |= buffer[0] << 0;
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event <<= SBI_EVENT_CAUSE_SHIFT;
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}
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spin_lock_irqsave(&card->priv->driver_lock, flags);
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card->event = event;
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card->int_cause |= MRVDRV_CARDEVENT;
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lbs_interrupt(card->priv);
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spin_unlock_irqrestore(&card->priv->driver_lock, flags);
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ret = 0;
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out:
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lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
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return ret;
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}
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static int if_sdio_card_to_host(struct if_sdio_card *card)
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{
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int ret;
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u8 status;
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u16 size, type, chunk;
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unsigned long timeout;
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lbs_deb_enter(LBS_DEB_SDIO);
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size = if_sdio_read_scratch(card, &ret);
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if (ret)
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goto out;
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if (size < 4) {
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lbs_deb_sdio("invalid packet size (%d bytes) from firmware\n",
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(int)size);
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ret = -EINVAL;
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goto out;
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}
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timeout = jiffies + HZ;
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while (1) {
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status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
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if (ret)
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goto out;
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if (status & IF_SDIO_IO_RDY)
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break;
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if (time_after(jiffies, timeout)) {
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ret = -ETIMEDOUT;
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goto out;
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}
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mdelay(1);
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}
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/*
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* The transfer must be in one transaction or the firmware
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* goes suicidal.
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*/
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chunk = size;
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if ((chunk > card->func->cur_blksize) || (chunk > 512)) {
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chunk = (chunk + card->func->cur_blksize - 1) /
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card->func->cur_blksize * card->func->cur_blksize;
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}
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ret = sdio_readsb(card->func, card->buffer, card->ioport, chunk);
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if (ret)
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goto out;
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chunk = card->buffer[0] | (card->buffer[1] << 8);
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type = card->buffer[2] | (card->buffer[3] << 8);
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lbs_deb_sdio("packet of type %d and size %d bytes\n",
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(int)type, (int)chunk);
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if (chunk > size) {
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lbs_deb_sdio("packet fragment (%d > %d)\n",
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(int)chunk, (int)size);
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ret = -EINVAL;
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goto out;
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}
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if (chunk < size) {
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lbs_deb_sdio("packet fragment (%d < %d)\n",
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(int)chunk, (int)size);
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}
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switch (type) {
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case MVMS_CMD:
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ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4);
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if (ret)
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goto out;
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break;
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case MVMS_DAT:
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ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4);
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if (ret)
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goto out;
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break;
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case MVMS_EVENT:
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ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4);
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if (ret)
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goto out;
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break;
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default:
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lbs_deb_sdio("invalid type (%d) from firmware\n",
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(int)type);
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ret = -EINVAL;
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goto out;
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}
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out:
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if (ret)
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lbs_pr_err("problem fetching packet from firmware\n");
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lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
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return ret;
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}
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static void if_sdio_host_to_card_worker(struct work_struct *work)
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{
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struct if_sdio_card *card;
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struct if_sdio_packet *packet;
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unsigned long timeout;
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u8 status;
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int ret;
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unsigned long flags;
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lbs_deb_enter(LBS_DEB_SDIO);
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card = container_of(work, struct if_sdio_card, packet_worker);
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while (1) {
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spin_lock_irqsave(&card->lock, flags);
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packet = card->packets;
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if (packet)
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card->packets = packet->next;
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spin_unlock_irqrestore(&card->lock, flags);
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if (!packet)
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break;
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sdio_claim_host(card->func);
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timeout = jiffies + HZ;
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while (1) {
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status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
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if (ret)
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goto release;
|
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if (status & IF_SDIO_IO_RDY)
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break;
|
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if (time_after(jiffies, timeout)) {
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|
ret = -ETIMEDOUT;
|
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goto release;
|
|
}
|
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mdelay(1);
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|
}
|
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|
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ret = sdio_writesb(card->func, card->ioport,
|
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packet->buffer, packet->nb);
|
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if (ret)
|
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goto release;
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|
release:
|
|
sdio_release_host(card->func);
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|
|
|
kfree(packet);
|
|
}
|
|
|
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lbs_deb_leave(LBS_DEB_SDIO);
|
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}
|
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|
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/********************************************************************/
|
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/* Firmware */
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/********************************************************************/
|
|
|
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static int if_sdio_prog_helper(struct if_sdio_card *card)
|
|
{
|
|
int ret;
|
|
u8 status;
|
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const struct firmware *fw;
|
|
unsigned long timeout;
|
|
u8 *chunk_buffer;
|
|
u32 chunk_size;
|
|
u8 *firmware;
|
|
size_t size;
|
|
|
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lbs_deb_enter(LBS_DEB_SDIO);
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|
|
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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;
|
|
}
|
|
|
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sdio_claim_host(card->func);
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|
|
|
ret = sdio_set_block_size(card->func, 32);
|
|
if (ret)
|
|
goto release;
|
|
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firmware = fw->data;
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|
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) &&
|
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(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_set_block_size(card->func, 0);
|
|
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;
|
|
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, (chunk_size + 31) / 32 * 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_set_block_size(card->func, 0);
|
|
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;
|
|
|
|
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:
|
|
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.
|
|
*/
|
|
size = nb + 4;
|
|
if ((size > card->func->cur_blksize) || (size > 512)) {
|
|
size = (size + card->func->cur_blksize - 1) /
|
|
card->func->cur_blksize * card->func->cur_blksize;
|
|
}
|
|
|
|
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);
|
|
|
|
schedule_work(&card->packet_worker);
|
|
|
|
ret = 0;
|
|
|
|
out:
|
|
lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int if_sdio_get_int_status(struct lbs_private *priv, u8 *ireg)
|
|
{
|
|
struct if_sdio_card *card;
|
|
|
|
lbs_deb_enter(LBS_DEB_SDIO);
|
|
|
|
card = priv->card;
|
|
|
|
*ireg = card->int_cause;
|
|
card->int_cause = 0;
|
|
|
|
lbs_deb_leave(LBS_DEB_SDIO);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int if_sdio_read_event_cause(struct lbs_private *priv)
|
|
{
|
|
struct if_sdio_card *card;
|
|
|
|
lbs_deb_enter(LBS_DEB_SDIO);
|
|
|
|
card = priv->card;
|
|
|
|
priv->eventcause = card->event;
|
|
|
|
lbs_deb_leave(LBS_DEB_SDIO);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*******************************************************************/
|
|
/* 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 (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;
|
|
spin_lock_init(&card->lock);
|
|
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->hw_get_int_status = if_sdio_get_int_status;
|
|
priv->hw_read_event_cause = if_sdio_read_event_cause;
|
|
|
|
priv->fw_ready = 1;
|
|
|
|
/*
|
|
* Enable interrupts now that everything is set up
|
|
*/
|
|
sdio_claim_host(func);
|
|
sdio_writeb(func, 0x0f, IF_SDIO_H_INT_MASK, &ret);
|
|
sdio_release_host(func);
|
|
if (ret)
|
|
goto reclaim;
|
|
|
|
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_scheduled_work();
|
|
free_netdev(priv->dev);
|
|
kfree(priv);
|
|
reclaim:
|
|
sdio_claim_host(func);
|
|
release_int:
|
|
sdio_release_irq(func);
|
|
disable:
|
|
sdio_disable_func(func);
|
|
release:
|
|
sdio_release_host(func);
|
|
free:
|
|
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);
|
|
|
|
card->priv->surpriseremoved = 1;
|
|
|
|
lbs_deb_sdio("call remove card\n");
|
|
lbs_stop_card(card->priv);
|
|
lbs_remove_card(card->priv);
|
|
|
|
flush_scheduled_work();
|
|
|
|
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);
|
|
|
|
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);
|
|
|
|
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");
|