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1090 lines
24 KiB
C
1090 lines
24 KiB
C
/**
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* Marvell BT-over-SDIO driver: SDIO interface related functions.
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*
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* Copyright (C) 2009, Marvell International Ltd.
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*
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* This software file (the "File") is distributed by Marvell International
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* Ltd. under the terms of the GNU General Public License Version 2, June 1991
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* (the "License"). You may use, redistribute and/or modify this File in
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* accordance with the terms and conditions of the License, a copy of which
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* is available by writing to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
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* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
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*
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*
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* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
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* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
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* this warranty disclaimer.
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**/
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#include <linux/firmware.h>
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#include <linux/slab.h>
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#include <linux/mmc/sdio_ids.h>
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#include <linux/mmc/sdio_func.h>
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#include <linux/module.h>
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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#include "btmrvl_drv.h"
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#include "btmrvl_sdio.h"
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#define VERSION "1.0"
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/* The btmrvl_sdio_remove() callback function is called
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* when user removes this module from kernel space or ejects
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* the card from the slot. The driver handles these 2 cases
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* differently.
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* If the user is removing the module, a MODULE_SHUTDOWN_REQ
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* command is sent to firmware and interrupt will be disabled.
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* If the card is removed, there is no need to send command
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* or disable interrupt.
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*
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* The variable 'user_rmmod' is used to distinguish these two
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* scenarios. This flag is initialized as FALSE in case the card
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* is removed, and will be set to TRUE for module removal when
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* module_exit function is called.
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*/
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static u8 user_rmmod;
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static u8 sdio_ireg;
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static const struct btmrvl_sdio_card_reg btmrvl_reg_8688 = {
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.cfg = 0x03,
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.host_int_mask = 0x04,
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.host_intstatus = 0x05,
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.card_status = 0x20,
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.sq_read_base_addr_a0 = 0x10,
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.sq_read_base_addr_a1 = 0x11,
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.card_fw_status0 = 0x40,
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.card_fw_status1 = 0x41,
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.card_rx_len = 0x42,
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.card_rx_unit = 0x43,
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.io_port_0 = 0x00,
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.io_port_1 = 0x01,
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.io_port_2 = 0x02,
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};
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static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = {
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.cfg = 0x00,
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.host_int_mask = 0x02,
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.host_intstatus = 0x03,
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.card_status = 0x30,
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.sq_read_base_addr_a0 = 0x40,
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.sq_read_base_addr_a1 = 0x41,
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.card_revision = 0x5c,
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.card_fw_status0 = 0x60,
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.card_fw_status1 = 0x61,
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.card_rx_len = 0x62,
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.card_rx_unit = 0x63,
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.io_port_0 = 0x78,
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.io_port_1 = 0x79,
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.io_port_2 = 0x7a,
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};
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static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
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.helper = "sd8688_helper.bin",
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.firmware = "sd8688.bin",
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.reg = &btmrvl_reg_8688,
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.sd_blksz_fw_dl = 64,
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};
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static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
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.helper = NULL,
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.firmware = "mrvl/sd8787_uapsta.bin",
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.reg = &btmrvl_reg_87xx,
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.sd_blksz_fw_dl = 256,
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};
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static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
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.helper = NULL,
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.firmware = "mrvl/sd8797_uapsta.bin",
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.reg = &btmrvl_reg_87xx,
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.sd_blksz_fw_dl = 256,
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};
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static const struct sdio_device_id btmrvl_sdio_ids[] = {
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/* Marvell SD8688 Bluetooth device */
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{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105),
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.driver_data = (unsigned long) &btmrvl_sdio_sd8688 },
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/* Marvell SD8787 Bluetooth device */
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{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A),
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.driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
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/* Marvell SD8797 Bluetooth device */
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{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A),
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.driver_data = (unsigned long) &btmrvl_sdio_sd8797 },
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids);
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static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card)
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{
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u8 reg;
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int ret;
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reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret);
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if (!ret)
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card->rx_unit = reg;
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return ret;
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}
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static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat)
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{
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u8 fws0, fws1;
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int ret;
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*dat = 0;
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fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
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if (ret)
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return -EIO;
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fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret);
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if (ret)
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return -EIO;
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*dat = (((u16) fws1) << 8) | fws0;
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return 0;
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}
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static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat)
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{
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u8 reg;
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int ret;
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reg = sdio_readb(card->func, card->reg->card_rx_len, &ret);
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if (!ret)
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*dat = (u16) reg << card->rx_unit;
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return ret;
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}
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static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card,
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u8 mask)
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{
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int ret;
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sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret);
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if (ret) {
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BT_ERR("Unable to enable the host interrupt!");
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ret = -EIO;
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}
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return ret;
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}
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static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card,
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u8 mask)
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{
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u8 host_int_mask;
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int ret;
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host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret);
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if (ret)
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return -EIO;
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host_int_mask &= ~mask;
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sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret);
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if (ret < 0) {
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BT_ERR("Unable to disable the host interrupt!");
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return -EIO;
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}
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return 0;
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}
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static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits)
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{
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unsigned int tries;
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u8 status;
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int ret;
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for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) {
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status = sdio_readb(card->func, card->reg->card_status, &ret);
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if (ret)
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goto failed;
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if ((status & bits) == bits)
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return ret;
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udelay(1);
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}
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ret = -ETIMEDOUT;
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failed:
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BT_ERR("FAILED! ret=%d", ret);
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return ret;
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}
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static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card,
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int pollnum)
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{
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int ret = -ETIMEDOUT;
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u16 firmwarestat;
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unsigned int tries;
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/* Wait for firmware to become ready */
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for (tries = 0; tries < pollnum; tries++) {
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if (btmrvl_sdio_read_fw_status(card, &firmwarestat) < 0)
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continue;
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if (firmwarestat == FIRMWARE_READY) {
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ret = 0;
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break;
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} else {
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msleep(10);
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}
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}
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return ret;
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}
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static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
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{
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const struct firmware *fw_helper = NULL;
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const u8 *helper = NULL;
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int ret;
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void *tmphlprbuf = NULL;
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int tmphlprbufsz, hlprblknow, helperlen;
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u8 *helperbuf;
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u32 tx_len;
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ret = request_firmware(&fw_helper, card->helper,
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&card->func->dev);
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if ((ret < 0) || !fw_helper) {
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BT_ERR("request_firmware(helper) failed, error code = %d",
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ret);
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ret = -ENOENT;
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goto done;
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}
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helper = fw_helper->data;
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helperlen = fw_helper->size;
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BT_DBG("Downloading helper image (%d bytes), block size %d bytes",
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helperlen, SDIO_BLOCK_SIZE);
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tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
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tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL);
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if (!tmphlprbuf) {
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BT_ERR("Unable to allocate buffer for helper."
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" Terminating download");
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ret = -ENOMEM;
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goto done;
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}
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helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
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/* Perform helper data transfer */
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tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE)
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- SDIO_HEADER_LEN;
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hlprblknow = 0;
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do {
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ret = btmrvl_sdio_poll_card_status(card,
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CARD_IO_READY | DN_LD_CARD_RDY);
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if (ret < 0) {
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BT_ERR("Helper download poll status timeout @ %d",
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hlprblknow);
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goto done;
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}
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/* Check if there is more data? */
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if (hlprblknow >= helperlen)
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break;
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if (helperlen - hlprblknow < tx_len)
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tx_len = helperlen - hlprblknow;
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/* Little-endian */
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helperbuf[0] = ((tx_len & 0x000000ff) >> 0);
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helperbuf[1] = ((tx_len & 0x0000ff00) >> 8);
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helperbuf[2] = ((tx_len & 0x00ff0000) >> 16);
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helperbuf[3] = ((tx_len & 0xff000000) >> 24);
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memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow],
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tx_len);
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/* Now send the data */
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ret = sdio_writesb(card->func, card->ioport, helperbuf,
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FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE);
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if (ret < 0) {
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BT_ERR("IO error during helper download @ %d",
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hlprblknow);
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goto done;
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}
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hlprblknow += tx_len;
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} while (true);
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BT_DBG("Transferring helper image EOF block");
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memset(helperbuf, 0x0, SDIO_BLOCK_SIZE);
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ret = sdio_writesb(card->func, card->ioport, helperbuf,
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SDIO_BLOCK_SIZE);
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if (ret < 0) {
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BT_ERR("IO error in writing helper image EOF block");
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goto done;
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}
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ret = 0;
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done:
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kfree(tmphlprbuf);
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if (fw_helper)
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release_firmware(fw_helper);
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return ret;
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}
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static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
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{
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const struct firmware *fw_firmware = NULL;
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const u8 *firmware = NULL;
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int firmwarelen, tmpfwbufsz, ret;
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unsigned int tries, offset;
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u8 base0, base1;
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void *tmpfwbuf = NULL;
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u8 *fwbuf;
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u16 len, blksz_dl = card->sd_blksz_fw_dl;
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int txlen = 0, tx_blocks = 0, count = 0;
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ret = request_firmware(&fw_firmware, card->firmware,
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&card->func->dev);
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if ((ret < 0) || !fw_firmware) {
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BT_ERR("request_firmware(firmware) failed, error code = %d",
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ret);
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ret = -ENOENT;
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goto done;
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}
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firmware = fw_firmware->data;
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firmwarelen = fw_firmware->size;
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BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
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tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
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tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL);
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if (!tmpfwbuf) {
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BT_ERR("Unable to allocate buffer for firmware."
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" Terminating download");
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ret = -ENOMEM;
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goto done;
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}
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/* Ensure aligned firmware buffer */
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fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
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|
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/* Perform firmware data transfer */
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offset = 0;
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do {
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ret = btmrvl_sdio_poll_card_status(card,
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CARD_IO_READY | DN_LD_CARD_RDY);
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if (ret < 0) {
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BT_ERR("FW download with helper poll status"
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" timeout @ %d", offset);
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goto done;
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}
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|
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/* Check if there is more data ? */
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if (offset >= firmwarelen)
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break;
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for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
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base0 = sdio_readb(card->func,
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card->reg->sq_read_base_addr_a0, &ret);
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if (ret) {
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BT_ERR("BASE0 register read failed:"
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" base0 = 0x%04X(%d)."
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" Terminating download",
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base0, base0);
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ret = -EIO;
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goto done;
|
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}
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base1 = sdio_readb(card->func,
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card->reg->sq_read_base_addr_a1, &ret);
|
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if (ret) {
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BT_ERR("BASE1 register read failed:"
|
|
" base1 = 0x%04X(%d)."
|
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" Terminating download",
|
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base1, base1);
|
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ret = -EIO;
|
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goto done;
|
|
}
|
|
|
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len = (((u16) base1) << 8) | base0;
|
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if (len)
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break;
|
|
|
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udelay(10);
|
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}
|
|
|
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if (!len)
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break;
|
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else if (len > BTM_UPLD_SIZE) {
|
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BT_ERR("FW download failure @%d, invalid length %d",
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offset, len);
|
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ret = -EINVAL;
|
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goto done;
|
|
}
|
|
|
|
txlen = len;
|
|
|
|
if (len & BIT(0)) {
|
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count++;
|
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if (count > MAX_WRITE_IOMEM_RETRY) {
|
|
BT_ERR("FW download failure @%d, "
|
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"over max retry count", offset);
|
|
ret = -EIO;
|
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goto done;
|
|
}
|
|
BT_ERR("FW CRC error indicated by the helper: "
|
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"len = 0x%04X, txlen = %d", len, txlen);
|
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len &= ~BIT(0);
|
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/* Set txlen to 0 so as to resend from same offset */
|
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txlen = 0;
|
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} else {
|
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count = 0;
|
|
|
|
/* Last block ? */
|
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if (firmwarelen - offset < txlen)
|
|
txlen = firmwarelen - offset;
|
|
|
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tx_blocks = (txlen + blksz_dl - 1) / blksz_dl;
|
|
|
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memcpy(fwbuf, &firmware[offset], txlen);
|
|
}
|
|
|
|
ret = sdio_writesb(card->func, card->ioport, fwbuf,
|
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tx_blocks * blksz_dl);
|
|
|
|
if (ret < 0) {
|
|
BT_ERR("FW download, writesb(%d) failed @%d",
|
|
count, offset);
|
|
sdio_writeb(card->func, HOST_CMD53_FIN,
|
|
card->reg->cfg, &ret);
|
|
if (ret)
|
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BT_ERR("writeb failed (CFG)");
|
|
}
|
|
|
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offset += txlen;
|
|
} while (true);
|
|
|
|
BT_DBG("FW download over, size %d bytes", offset);
|
|
|
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ret = 0;
|
|
|
|
done:
|
|
kfree(tmpfwbuf);
|
|
|
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if (fw_firmware)
|
|
release_firmware(fw_firmware);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
|
|
{
|
|
u16 buf_len = 0;
|
|
int ret, buf_block_len, blksz;
|
|
struct sk_buff *skb = NULL;
|
|
u32 type;
|
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u8 *payload = NULL;
|
|
struct hci_dev *hdev = priv->btmrvl_dev.hcidev;
|
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struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
|
|
|
|
if (!card || !card->func) {
|
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BT_ERR("card or function is NULL!");
|
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ret = -EINVAL;
|
|
goto exit;
|
|
}
|
|
|
|
/* Read the length of data to be transferred */
|
|
ret = btmrvl_sdio_read_rx_len(card, &buf_len);
|
|
if (ret < 0) {
|
|
BT_ERR("read rx_len failed");
|
|
ret = -EIO;
|
|
goto exit;
|
|
}
|
|
|
|
blksz = SDIO_BLOCK_SIZE;
|
|
buf_block_len = (buf_len + blksz - 1) / blksz;
|
|
|
|
if (buf_len <= SDIO_HEADER_LEN
|
|
|| (buf_block_len * blksz) > ALLOC_BUF_SIZE) {
|
|
BT_ERR("invalid packet length: %d", buf_len);
|
|
ret = -EINVAL;
|
|
goto exit;
|
|
}
|
|
|
|
/* Allocate buffer */
|
|
skb = bt_skb_alloc(buf_block_len * blksz + BTSDIO_DMA_ALIGN,
|
|
GFP_ATOMIC);
|
|
if (skb == NULL) {
|
|
BT_ERR("No free skb");
|
|
goto exit;
|
|
}
|
|
|
|
if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
|
|
skb_put(skb, (unsigned long) skb->data &
|
|
(BTSDIO_DMA_ALIGN - 1));
|
|
skb_pull(skb, (unsigned long) skb->data &
|
|
(BTSDIO_DMA_ALIGN - 1));
|
|
}
|
|
|
|
payload = skb->data;
|
|
|
|
ret = sdio_readsb(card->func, payload, card->ioport,
|
|
buf_block_len * blksz);
|
|
if (ret < 0) {
|
|
BT_ERR("readsb failed: %d", ret);
|
|
ret = -EIO;
|
|
goto exit;
|
|
}
|
|
|
|
/* This is SDIO specific header length: byte[2][1][0], type: byte[3]
|
|
* (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor)
|
|
*/
|
|
|
|
buf_len = payload[0];
|
|
buf_len |= (u16) payload[1] << 8;
|
|
type = payload[3];
|
|
|
|
switch (type) {
|
|
case HCI_ACLDATA_PKT:
|
|
case HCI_SCODATA_PKT:
|
|
case HCI_EVENT_PKT:
|
|
bt_cb(skb)->pkt_type = type;
|
|
skb->dev = (void *)hdev;
|
|
skb_put(skb, buf_len);
|
|
skb_pull(skb, SDIO_HEADER_LEN);
|
|
|
|
if (type == HCI_EVENT_PKT)
|
|
btmrvl_check_evtpkt(priv, skb);
|
|
|
|
hci_recv_frame(skb);
|
|
hdev->stat.byte_rx += buf_len;
|
|
break;
|
|
|
|
case MRVL_VENDOR_PKT:
|
|
bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
|
|
skb->dev = (void *)hdev;
|
|
skb_put(skb, buf_len);
|
|
skb_pull(skb, SDIO_HEADER_LEN);
|
|
|
|
if (btmrvl_process_event(priv, skb))
|
|
hci_recv_frame(skb);
|
|
|
|
hdev->stat.byte_rx += buf_len;
|
|
break;
|
|
|
|
default:
|
|
BT_ERR("Unknown packet type:%d", type);
|
|
print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, payload,
|
|
blksz * buf_block_len);
|
|
|
|
kfree_skb(skb);
|
|
skb = NULL;
|
|
break;
|
|
}
|
|
|
|
exit:
|
|
if (ret) {
|
|
hdev->stat.err_rx++;
|
|
if (skb)
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv)
|
|
{
|
|
ulong flags;
|
|
u8 ireg;
|
|
struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
|
|
|
|
spin_lock_irqsave(&priv->driver_lock, flags);
|
|
ireg = sdio_ireg;
|
|
sdio_ireg = 0;
|
|
spin_unlock_irqrestore(&priv->driver_lock, flags);
|
|
|
|
sdio_claim_host(card->func);
|
|
if (ireg & DN_LD_HOST_INT_STATUS) {
|
|
if (priv->btmrvl_dev.tx_dnld_rdy)
|
|
BT_DBG("tx_done already received: "
|
|
" int_status=0x%x", ireg);
|
|
else
|
|
priv->btmrvl_dev.tx_dnld_rdy = true;
|
|
}
|
|
|
|
if (ireg & UP_LD_HOST_INT_STATUS)
|
|
btmrvl_sdio_card_to_host(priv);
|
|
|
|
sdio_release_host(card->func);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void btmrvl_sdio_interrupt(struct sdio_func *func)
|
|
{
|
|
struct btmrvl_private *priv;
|
|
struct btmrvl_sdio_card *card;
|
|
ulong flags;
|
|
u8 ireg = 0;
|
|
int ret;
|
|
|
|
card = sdio_get_drvdata(func);
|
|
if (!card || !card->priv) {
|
|
BT_ERR("sbi_interrupt(%p) card or priv is "
|
|
"NULL, card=%p\n", func, card);
|
|
return;
|
|
}
|
|
|
|
priv = card->priv;
|
|
|
|
ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret);
|
|
if (ret) {
|
|
BT_ERR("sdio_readb: read int status register failed");
|
|
return;
|
|
}
|
|
|
|
if (ireg != 0) {
|
|
/*
|
|
* DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
|
|
* Clear the interrupt status register and re-enable the
|
|
* interrupt.
|
|
*/
|
|
BT_DBG("ireg = 0x%x", ireg);
|
|
|
|
sdio_writeb(card->func, ~(ireg) & (DN_LD_HOST_INT_STATUS |
|
|
UP_LD_HOST_INT_STATUS),
|
|
card->reg->host_intstatus, &ret);
|
|
if (ret) {
|
|
BT_ERR("sdio_writeb: clear int status register failed");
|
|
return;
|
|
}
|
|
}
|
|
|
|
spin_lock_irqsave(&priv->driver_lock, flags);
|
|
sdio_ireg |= ireg;
|
|
spin_unlock_irqrestore(&priv->driver_lock, flags);
|
|
|
|
btmrvl_interrupt(priv);
|
|
}
|
|
|
|
static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
|
|
{
|
|
struct sdio_func *func;
|
|
u8 reg;
|
|
int ret = 0;
|
|
|
|
if (!card || !card->func) {
|
|
BT_ERR("Error: card or function is NULL!");
|
|
ret = -EINVAL;
|
|
goto failed;
|
|
}
|
|
|
|
func = card->func;
|
|
|
|
sdio_claim_host(func);
|
|
|
|
ret = sdio_enable_func(func);
|
|
if (ret) {
|
|
BT_ERR("sdio_enable_func() failed: ret=%d", ret);
|
|
ret = -EIO;
|
|
goto release_host;
|
|
}
|
|
|
|
ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
|
|
if (ret) {
|
|
BT_ERR("sdio_claim_irq failed: ret=%d", ret);
|
|
ret = -EIO;
|
|
goto disable_func;
|
|
}
|
|
|
|
ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
|
|
if (ret) {
|
|
BT_ERR("cannot set SDIO block size");
|
|
ret = -EIO;
|
|
goto release_irq;
|
|
}
|
|
|
|
reg = sdio_readb(func, card->reg->io_port_0, &ret);
|
|
if (ret < 0) {
|
|
ret = -EIO;
|
|
goto release_irq;
|
|
}
|
|
|
|
card->ioport = reg;
|
|
|
|
reg = sdio_readb(func, card->reg->io_port_1, &ret);
|
|
if (ret < 0) {
|
|
ret = -EIO;
|
|
goto release_irq;
|
|
}
|
|
|
|
card->ioport |= (reg << 8);
|
|
|
|
reg = sdio_readb(func, card->reg->io_port_2, &ret);
|
|
if (ret < 0) {
|
|
ret = -EIO;
|
|
goto release_irq;
|
|
}
|
|
|
|
card->ioport |= (reg << 16);
|
|
|
|
BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
|
|
|
|
sdio_set_drvdata(func, card);
|
|
|
|
sdio_release_host(func);
|
|
|
|
return 0;
|
|
|
|
release_irq:
|
|
sdio_release_irq(func);
|
|
|
|
disable_func:
|
|
sdio_disable_func(func);
|
|
|
|
release_host:
|
|
sdio_release_host(func);
|
|
|
|
failed:
|
|
return ret;
|
|
}
|
|
|
|
static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
|
|
{
|
|
if (card && card->func) {
|
|
sdio_claim_host(card->func);
|
|
sdio_release_irq(card->func);
|
|
sdio_disable_func(card->func);
|
|
sdio_release_host(card->func);
|
|
sdio_set_drvdata(card->func, NULL);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
|
|
{
|
|
int ret;
|
|
|
|
if (!card || !card->func)
|
|
return -EINVAL;
|
|
|
|
sdio_claim_host(card->func);
|
|
|
|
ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
|
|
|
|
btmrvl_sdio_get_rx_unit(card);
|
|
|
|
sdio_release_host(card->func);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
|
|
{
|
|
int ret;
|
|
|
|
if (!card || !card->func)
|
|
return -EINVAL;
|
|
|
|
sdio_claim_host(card->func);
|
|
|
|
ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
|
|
|
|
sdio_release_host(card->func);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
|
|
u8 *payload, u16 nb)
|
|
{
|
|
struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
|
|
int ret = 0;
|
|
int buf_block_len;
|
|
int blksz;
|
|
int i = 0;
|
|
u8 *buf = NULL;
|
|
void *tmpbuf = NULL;
|
|
int tmpbufsz;
|
|
|
|
if (!card || !card->func) {
|
|
BT_ERR("card or function is NULL!");
|
|
return -EINVAL;
|
|
}
|
|
|
|
buf = payload;
|
|
if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) {
|
|
tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN);
|
|
tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
|
|
if (!tmpbuf)
|
|
return -ENOMEM;
|
|
buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
|
|
memcpy(buf, payload, nb);
|
|
}
|
|
|
|
blksz = SDIO_BLOCK_SIZE;
|
|
buf_block_len = (nb + blksz - 1) / blksz;
|
|
|
|
sdio_claim_host(card->func);
|
|
|
|
do {
|
|
/* Transfer data to card */
|
|
ret = sdio_writesb(card->func, card->ioport, buf,
|
|
buf_block_len * blksz);
|
|
if (ret < 0) {
|
|
i++;
|
|
BT_ERR("i=%d writesb failed: %d", i, ret);
|
|
print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
|
|
payload, nb);
|
|
ret = -EIO;
|
|
if (i > MAX_WRITE_IOMEM_RETRY)
|
|
goto exit;
|
|
}
|
|
} while (ret);
|
|
|
|
priv->btmrvl_dev.tx_dnld_rdy = false;
|
|
|
|
exit:
|
|
sdio_release_host(card->func);
|
|
kfree(tmpbuf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
|
|
{
|
|
int ret = 0;
|
|
u8 fws0;
|
|
int pollnum = MAX_POLL_TRIES;
|
|
|
|
if (!card || !card->func) {
|
|
BT_ERR("card or function is NULL!");
|
|
return -EINVAL;
|
|
}
|
|
sdio_claim_host(card->func);
|
|
|
|
if (!btmrvl_sdio_verify_fw_download(card, 1)) {
|
|
BT_DBG("Firmware already downloaded!");
|
|
goto done;
|
|
}
|
|
|
|
/* Check if other function driver is downloading the firmware */
|
|
fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
|
|
if (ret) {
|
|
BT_ERR("Failed to read FW downloading status!");
|
|
ret = -EIO;
|
|
goto done;
|
|
}
|
|
if (fws0) {
|
|
BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0);
|
|
|
|
/* Give other function more time to download the firmware */
|
|
pollnum *= 10;
|
|
} else {
|
|
if (card->helper) {
|
|
ret = btmrvl_sdio_download_helper(card);
|
|
if (ret) {
|
|
BT_ERR("Failed to download helper!");
|
|
ret = -EIO;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
if (btmrvl_sdio_download_fw_w_helper(card)) {
|
|
BT_ERR("Failed to download firmware!");
|
|
ret = -EIO;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
if (btmrvl_sdio_verify_fw_download(card, pollnum)) {
|
|
BT_ERR("FW failed to be active in time!");
|
|
ret = -ETIMEDOUT;
|
|
goto done;
|
|
}
|
|
|
|
done:
|
|
sdio_release_host(card->func);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
|
|
{
|
|
struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
|
|
int ret = 0;
|
|
|
|
if (!card || !card->func) {
|
|
BT_ERR("card or function is NULL!");
|
|
return -EINVAL;
|
|
}
|
|
|
|
sdio_claim_host(card->func);
|
|
|
|
sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret);
|
|
|
|
sdio_release_host(card->func);
|
|
|
|
BT_DBG("wake up firmware");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int btmrvl_sdio_probe(struct sdio_func *func,
|
|
const struct sdio_device_id *id)
|
|
{
|
|
int ret = 0;
|
|
struct btmrvl_private *priv = NULL;
|
|
struct btmrvl_sdio_card *card = NULL;
|
|
|
|
BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
|
|
id->vendor, id->device, id->class, func->num);
|
|
|
|
card = kzalloc(sizeof(*card), GFP_KERNEL);
|
|
if (!card) {
|
|
ret = -ENOMEM;
|
|
goto done;
|
|
}
|
|
|
|
card->func = func;
|
|
|
|
if (id->driver_data) {
|
|
struct btmrvl_sdio_device *data = (void *) id->driver_data;
|
|
card->helper = data->helper;
|
|
card->firmware = data->firmware;
|
|
card->reg = data->reg;
|
|
card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
|
|
}
|
|
|
|
if (btmrvl_sdio_register_dev(card) < 0) {
|
|
BT_ERR("Failed to register BT device!");
|
|
ret = -ENODEV;
|
|
goto free_card;
|
|
}
|
|
|
|
/* Disable the interrupts on the card */
|
|
btmrvl_sdio_disable_host_int(card);
|
|
|
|
if (btmrvl_sdio_download_fw(card)) {
|
|
BT_ERR("Downloading firmware failed!");
|
|
ret = -ENODEV;
|
|
goto unreg_dev;
|
|
}
|
|
|
|
msleep(100);
|
|
|
|
btmrvl_sdio_enable_host_int(card);
|
|
|
|
priv = btmrvl_add_card(card);
|
|
if (!priv) {
|
|
BT_ERR("Initializing card failed!");
|
|
ret = -ENODEV;
|
|
goto disable_host_int;
|
|
}
|
|
|
|
card->priv = priv;
|
|
|
|
/* Initialize the interface specific function pointers */
|
|
priv->hw_host_to_card = btmrvl_sdio_host_to_card;
|
|
priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
|
|
priv->hw_process_int_status = btmrvl_sdio_process_int_status;
|
|
|
|
if (btmrvl_register_hdev(priv)) {
|
|
BT_ERR("Register hdev failed!");
|
|
ret = -ENODEV;
|
|
goto disable_host_int;
|
|
}
|
|
|
|
priv->btmrvl_dev.psmode = 1;
|
|
btmrvl_enable_ps(priv);
|
|
|
|
return 0;
|
|
|
|
disable_host_int:
|
|
btmrvl_sdio_disable_host_int(card);
|
|
unreg_dev:
|
|
btmrvl_sdio_unregister_dev(card);
|
|
free_card:
|
|
kfree(card);
|
|
done:
|
|
return ret;
|
|
}
|
|
|
|
static void btmrvl_sdio_remove(struct sdio_func *func)
|
|
{
|
|
struct btmrvl_sdio_card *card;
|
|
|
|
if (func) {
|
|
card = sdio_get_drvdata(func);
|
|
if (card) {
|
|
/* Send SHUTDOWN command & disable interrupt
|
|
* if user removes the module.
|
|
*/
|
|
if (user_rmmod) {
|
|
btmrvl_send_module_cfg_cmd(card->priv,
|
|
MODULE_SHUTDOWN_REQ);
|
|
btmrvl_sdio_disable_host_int(card);
|
|
}
|
|
BT_DBG("unregester dev");
|
|
btmrvl_sdio_unregister_dev(card);
|
|
btmrvl_remove_card(card->priv);
|
|
kfree(card);
|
|
}
|
|
}
|
|
}
|
|
|
|
static struct sdio_driver bt_mrvl_sdio = {
|
|
.name = "btmrvl_sdio",
|
|
.id_table = btmrvl_sdio_ids,
|
|
.probe = btmrvl_sdio_probe,
|
|
.remove = btmrvl_sdio_remove,
|
|
};
|
|
|
|
static int __init btmrvl_sdio_init_module(void)
|
|
{
|
|
if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
|
|
BT_ERR("SDIO Driver Registration Failed");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Clear the flag in case user removes the card. */
|
|
user_rmmod = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit btmrvl_sdio_exit_module(void)
|
|
{
|
|
/* Set the flag as user is removing this module. */
|
|
user_rmmod = 1;
|
|
|
|
sdio_unregister_driver(&bt_mrvl_sdio);
|
|
}
|
|
|
|
module_init(btmrvl_sdio_init_module);
|
|
module_exit(btmrvl_sdio_exit_module);
|
|
|
|
MODULE_AUTHOR("Marvell International Ltd.");
|
|
MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
|
|
MODULE_VERSION(VERSION);
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_FIRMWARE("sd8688_helper.bin");
|
|
MODULE_FIRMWARE("sd8688.bin");
|
|
MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
|
|
MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");
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