--- /dev/null
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/* Copyright (C) 2021 Martin Blumenstingl <martin.blumenstingl@googlemail.com>
+ * Copyright (C) 2021 Jernej Skrabec <jernej.skrabec@gmail.com>
+ *
+ * Based on rtw88/pci.c:
+ * Copyright(c) 2018-2019 Realtek Corporation
+ */
+
+#include <linux/module.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/sdio_func.h>
+#include "main.h"
+#include "debug.h"
+#include "fw.h"
+#include "ps.h"
+#include "reg.h"
+#include "rx.h"
+#include "sdio.h"
+#include "tx.h"
+
+#define RTW_SDIO_INDIRECT_RW_RETRIES 50
+
+static bool rtw_sdio_is_bus_addr(u32 addr)
+{
+ return !!(addr & RTW_SDIO_BUS_MSK);
+}
+
+static bool rtw_sdio_bus_claim_needed(struct rtw_sdio *rtwsdio)
+{
+ return !rtwsdio->irq_thread ||
+ rtwsdio->irq_thread != current;
+}
+
+static u32 rtw_sdio_to_bus_offset(struct rtw_dev *rtwdev, u32 addr)
+{
+ switch (addr & RTW_SDIO_BUS_MSK) {
+ case WLAN_IOREG_OFFSET:
+ addr &= WLAN_IOREG_REG_MSK;
+ addr |= FIELD_PREP(REG_SDIO_CMD_ADDR_MSK,
+ REG_SDIO_CMD_ADDR_MAC_REG);
+ break;
+ case SDIO_LOCAL_OFFSET:
+ addr &= SDIO_LOCAL_REG_MSK;
+ addr |= FIELD_PREP(REG_SDIO_CMD_ADDR_MSK,
+ REG_SDIO_CMD_ADDR_SDIO_REG);
+ break;
+ default:
+ rtw_warn(rtwdev, "Cannot convert addr 0x%08x to bus offset",
+ addr);
+ }
+
+ return addr;
+}
+
+static bool rtw_sdio_use_memcpy_io(struct rtw_dev *rtwdev, u32 addr,
+ u8 alignment)
+{
+ return IS_ALIGNED(addr, alignment) &&
+ test_bit(RTW_FLAG_POWERON, rtwdev->flags);
+}
+
+static void rtw_sdio_writel(struct rtw_dev *rtwdev, u32 val, u32 addr,
+ int *err_ret)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ u8 buf[4];
+ int i;
+
+ if (rtw_sdio_use_memcpy_io(rtwdev, addr, 4)) {
+ sdio_writel(rtwsdio->sdio_func, val, addr, err_ret);
+ return;
+ }
+
+ *(__le32 *)buf = cpu_to_le32(val);
+
+ for (i = 0; i < 4; i++) {
+ sdio_writeb(rtwsdio->sdio_func, buf[i], addr + i, err_ret);
+ if (*err_ret)
+ return;
+ }
+}
+
+static void rtw_sdio_writew(struct rtw_dev *rtwdev, u16 val, u32 addr,
+ int *err_ret)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ u8 buf[2];
+ int i;
+
+ if (rtw_sdio_use_memcpy_io(rtwdev, addr, 2)) {
+ sdio_writew(rtwsdio->sdio_func, val, addr, err_ret);
+ return;
+ }
+
+ *(__le16 *)buf = cpu_to_le16(val);
+
+ for (i = 0; i < 2; i++) {
+ sdio_writeb(rtwsdio->sdio_func, buf[i], addr + i, err_ret);
+ if (*err_ret)
+ return;
+ }
+}
+
+static u32 rtw_sdio_readl(struct rtw_dev *rtwdev, u32 addr, int *err_ret)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ u8 buf[4];
+ int i;
+
+ if (rtw_sdio_use_memcpy_io(rtwdev, addr, 4))
+ return sdio_readl(rtwsdio->sdio_func, addr, err_ret);
+
+ for (i = 0; i < 4; i++) {
+ buf[i] = sdio_readb(rtwsdio->sdio_func, addr + i, err_ret);
+ if (*err_ret)
+ return 0;
+ }
+
+ return le32_to_cpu(*(__le32 *)buf);
+}
+
+static u16 rtw_sdio_readw(struct rtw_dev *rtwdev, u32 addr, int *err_ret)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ u8 buf[2];
+ int i;
+
+ if (rtw_sdio_use_memcpy_io(rtwdev, addr, 2))
+ return sdio_readw(rtwsdio->sdio_func, addr, err_ret);
+
+ for (i = 0; i < 2; i++) {
+ buf[i] = sdio_readb(rtwsdio->sdio_func, addr + i, err_ret);
+ if (*err_ret)
+ return 0;
+ }
+
+ return le16_to_cpu(*(__le16 *)buf);
+}
+
+static u32 rtw_sdio_to_io_address(struct rtw_dev *rtwdev, u32 addr,
+ bool direct)
+{
+ if (!direct)
+ return addr;
+
+ if (!rtw_sdio_is_bus_addr(addr))
+ addr |= WLAN_IOREG_OFFSET;
+
+ return rtw_sdio_to_bus_offset(rtwdev, addr);
+}
+
+static bool rtw_sdio_use_direct_io(struct rtw_dev *rtwdev, u32 addr)
+{
+ return !rtw_sdio_is_sdio30_supported(rtwdev) ||
+ rtw_sdio_is_bus_addr(addr);
+}
+
+static int rtw_sdio_indirect_reg_cfg(struct rtw_dev *rtwdev, u32 addr, u32 cfg)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ unsigned int retry;
+ u32 reg_cfg;
+ int ret;
+ u8 tmp;
+
+ reg_cfg = rtw_sdio_to_bus_offset(rtwdev, REG_SDIO_INDIRECT_REG_CFG);
+
+ rtw_sdio_writel(rtwdev, addr | cfg | BIT_SDIO_INDIRECT_REG_CFG_UNK20,
+ reg_cfg, &ret);
+ if (ret)
+ return ret;
+
+ for (retry = 0; retry < RTW_SDIO_INDIRECT_RW_RETRIES; retry++) {
+ tmp = sdio_readb(rtwsdio->sdio_func, reg_cfg + 2, &ret);
+ if (!ret && (tmp & BIT(4)))
+ return 0;
+ }
+
+ return -ETIMEDOUT;
+}
+
+static u8 rtw_sdio_indirect_read8(struct rtw_dev *rtwdev, u32 addr,
+ int *err_ret)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ u32 reg_data;
+
+ *err_ret = rtw_sdio_indirect_reg_cfg(rtwdev, addr,
+ BIT_SDIO_INDIRECT_REG_CFG_READ);
+ if (*err_ret)
+ return 0;
+
+ reg_data = rtw_sdio_to_bus_offset(rtwdev, REG_SDIO_INDIRECT_REG_DATA);
+ return sdio_readb(rtwsdio->sdio_func, reg_data, err_ret);
+}
+
+static int rtw_sdio_indirect_read_bytes(struct rtw_dev *rtwdev, u32 addr,
+ u8 *buf, int count)
+{
+ int i, ret = 0;
+
+ for (i = 0; i < count; i++) {
+ buf[i] = rtw_sdio_indirect_read8(rtwdev, addr + i, &ret);
+ if (ret)
+ break;
+ }
+
+ return ret;
+}
+
+static u16 rtw_sdio_indirect_read16(struct rtw_dev *rtwdev, u32 addr,
+ int *err_ret)
+{
+ u32 reg_data;
+ u8 buf[2];
+
+ if (!IS_ALIGNED(addr, 2)) {
+ *err_ret = rtw_sdio_indirect_read_bytes(rtwdev, addr, buf, 2);
+ if (*err_ret)
+ return 0;
+
+ return le16_to_cpu(*(__le16 *)buf);
+ }
+
+ *err_ret = rtw_sdio_indirect_reg_cfg(rtwdev, addr,
+ BIT_SDIO_INDIRECT_REG_CFG_READ);
+ if (*err_ret)
+ return 0;
+
+ reg_data = rtw_sdio_to_bus_offset(rtwdev, REG_SDIO_INDIRECT_REG_DATA);
+ return rtw_sdio_readw(rtwdev, reg_data, err_ret);
+}
+
+static u32 rtw_sdio_indirect_read32(struct rtw_dev *rtwdev, u32 addr,
+ int *err_ret)
+{
+ u32 reg_data;
+ u8 buf[4];
+
+ if (!IS_ALIGNED(addr, 4)) {
+ *err_ret = rtw_sdio_indirect_read_bytes(rtwdev, addr, buf, 4);
+ if (*err_ret)
+ return 0;
+
+ return le32_to_cpu(*(__le32 *)buf);
+ }
+
+ *err_ret = rtw_sdio_indirect_reg_cfg(rtwdev, addr,
+ BIT_SDIO_INDIRECT_REG_CFG_READ);
+ if (*err_ret)
+ return 0;
+
+ reg_data = rtw_sdio_to_bus_offset(rtwdev, REG_SDIO_INDIRECT_REG_DATA);
+ return rtw_sdio_readl(rtwdev, reg_data, err_ret);
+}
+
+static u8 rtw_sdio_read8(struct rtw_dev *rtwdev, u32 addr)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ bool direct, bus_claim;
+ int ret;
+ u8 val;
+
+ direct = rtw_sdio_use_direct_io(rtwdev, addr);
+ addr = rtw_sdio_to_io_address(rtwdev, addr, direct);
+ bus_claim = rtw_sdio_bus_claim_needed(rtwsdio);
+
+ if (bus_claim)
+ sdio_claim_host(rtwsdio->sdio_func);
+
+ if (direct)
+ val = sdio_readb(rtwsdio->sdio_func, addr, &ret);
+ else
+ val = rtw_sdio_indirect_read8(rtwdev, addr, &ret);
+
+ if (bus_claim)
+ sdio_release_host(rtwsdio->sdio_func);
+
+ if (ret)
+ rtw_warn(rtwdev, "sdio read8 failed (0x%x): %d", addr, ret);
+
+ return val;
+}
+
+static u16 rtw_sdio_read16(struct rtw_dev *rtwdev, u32 addr)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ bool direct, bus_claim;
+ int ret;
+ u16 val;
+
+ direct = rtw_sdio_use_direct_io(rtwdev, addr);
+ addr = rtw_sdio_to_io_address(rtwdev, addr, direct);
+ bus_claim = rtw_sdio_bus_claim_needed(rtwsdio);
+
+ if (bus_claim)
+ sdio_claim_host(rtwsdio->sdio_func);
+
+ if (direct)
+ val = rtw_sdio_readw(rtwdev, addr, &ret);
+ else
+ val = rtw_sdio_indirect_read16(rtwdev, addr, &ret);
+
+ if (bus_claim)
+ sdio_release_host(rtwsdio->sdio_func);
+
+ if (ret)
+ rtw_warn(rtwdev, "sdio read16 failed (0x%x): %d", addr, ret);
+
+ return val;
+}
+
+static u32 rtw_sdio_read32(struct rtw_dev *rtwdev, u32 addr)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ bool direct, bus_claim;
+ u32 val;
+ int ret;
+
+ direct = rtw_sdio_use_direct_io(rtwdev, addr);
+ addr = rtw_sdio_to_io_address(rtwdev, addr, direct);
+ bus_claim = rtw_sdio_bus_claim_needed(rtwsdio);
+
+ if (bus_claim)
+ sdio_claim_host(rtwsdio->sdio_func);
+
+ if (direct)
+ val = rtw_sdio_readl(rtwdev, addr, &ret);
+ else
+ val = rtw_sdio_indirect_read32(rtwdev, addr, &ret);
+
+ if (bus_claim)
+ sdio_release_host(rtwsdio->sdio_func);
+
+ if (ret)
+ rtw_warn(rtwdev, "sdio read32 failed (0x%x): %d", addr, ret);
+
+ return val;
+}
+
+static void rtw_sdio_indirect_write8(struct rtw_dev *rtwdev, u8 val, u32 addr,
+ int *err_ret)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ u32 reg_data;
+
+ reg_data = rtw_sdio_to_bus_offset(rtwdev, REG_SDIO_INDIRECT_REG_DATA);
+ sdio_writeb(rtwsdio->sdio_func, val, reg_data, err_ret);
+ if (*err_ret)
+ return;
+
+ *err_ret = rtw_sdio_indirect_reg_cfg(rtwdev, addr,
+ BIT_SDIO_INDIRECT_REG_CFG_WRITE);
+}
+
+static void rtw_sdio_indirect_write16(struct rtw_dev *rtwdev, u16 val, u32 addr,
+ int *err_ret)
+{
+ u32 reg_data;
+
+ if (!IS_ALIGNED(addr, 2)) {
+ addr = rtw_sdio_to_io_address(rtwdev, addr, true);
+ rtw_sdio_writew(rtwdev, val, addr, err_ret);
+ return;
+ }
+
+ reg_data = rtw_sdio_to_bus_offset(rtwdev, REG_SDIO_INDIRECT_REG_DATA);
+ rtw_sdio_writew(rtwdev, val, reg_data, err_ret);
+ if (*err_ret)
+ return;
+
+ *err_ret = rtw_sdio_indirect_reg_cfg(rtwdev, addr,
+ BIT_SDIO_INDIRECT_REG_CFG_WRITE |
+ BIT_SDIO_INDIRECT_REG_CFG_WORD);
+}
+
+static void rtw_sdio_indirect_write32(struct rtw_dev *rtwdev, u32 val,
+ u32 addr, int *err_ret)
+{
+ u32 reg_data;
+
+ if (!IS_ALIGNED(addr, 4)) {
+ addr = rtw_sdio_to_io_address(rtwdev, addr, true);
+ rtw_sdio_writel(rtwdev, val, addr, err_ret);
+ return;
+ }
+
+ reg_data = rtw_sdio_to_bus_offset(rtwdev, REG_SDIO_INDIRECT_REG_DATA);
+ rtw_sdio_writel(rtwdev, val, reg_data, err_ret);
+
+ *err_ret = rtw_sdio_indirect_reg_cfg(rtwdev, addr,
+ BIT_SDIO_INDIRECT_REG_CFG_WRITE |
+ BIT_SDIO_INDIRECT_REG_CFG_DWORD);
+}
+
+static void rtw_sdio_write8(struct rtw_dev *rtwdev, u32 addr, u8 val)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ bool direct, bus_claim;
+ int ret;
+
+ direct = rtw_sdio_use_direct_io(rtwdev, addr);
+ addr = rtw_sdio_to_io_address(rtwdev, addr, direct);
+ bus_claim = rtw_sdio_bus_claim_needed(rtwsdio);
+
+ if (bus_claim)
+ sdio_claim_host(rtwsdio->sdio_func);
+
+ if (direct)
+ sdio_writeb(rtwsdio->sdio_func, val, addr, &ret);
+ else
+ rtw_sdio_indirect_write8(rtwdev, val, addr, &ret);
+
+ if (bus_claim)
+ sdio_release_host(rtwsdio->sdio_func);
+
+ if (ret)
+ rtw_warn(rtwdev, "sdio write8 failed (0x%x): %d", addr, ret);
+}
+
+static void rtw_sdio_write16(struct rtw_dev *rtwdev, u32 addr, u16 val)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ bool direct, bus_claim;
+ int ret;
+
+ direct = rtw_sdio_use_direct_io(rtwdev, addr);
+ addr = rtw_sdio_to_io_address(rtwdev, addr, direct);
+ bus_claim = rtw_sdio_bus_claim_needed(rtwsdio);
+
+ if (bus_claim)
+ sdio_claim_host(rtwsdio->sdio_func);
+
+ if (direct)
+ rtw_sdio_writew(rtwdev, val, addr, &ret);
+ else
+ rtw_sdio_indirect_write16(rtwdev, val, addr, &ret);
+
+ if (bus_claim)
+ sdio_release_host(rtwsdio->sdio_func);
+
+ if (ret)
+ rtw_warn(rtwdev, "sdio write16 failed (0x%x): %d", addr, ret);
+}
+
+static void rtw_sdio_write32(struct rtw_dev *rtwdev, u32 addr, u32 val)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ bool direct, bus_claim;
+ int ret;
+
+ direct = rtw_sdio_use_direct_io(rtwdev, addr);
+ addr = rtw_sdio_to_io_address(rtwdev, addr, direct);
+ bus_claim = rtw_sdio_bus_claim_needed(rtwsdio);
+
+ if (bus_claim)
+ sdio_claim_host(rtwsdio->sdio_func);
+
+ if (direct)
+ rtw_sdio_writel(rtwdev, val, addr, &ret);
+ else
+ rtw_sdio_indirect_write32(rtwdev, val, addr, &ret);
+
+ if (bus_claim)
+ sdio_release_host(rtwsdio->sdio_func);
+
+ if (ret)
+ rtw_warn(rtwdev, "sdio write32 failed (0x%x): %d", addr, ret);
+}
+
+static u32 rtw_sdio_get_tx_addr(struct rtw_dev *rtwdev, size_t size,
+ enum rtw_tx_queue_type queue)
+{
+ u32 txaddr;
+
+ switch (queue) {
+ case RTW_TX_QUEUE_BCN:
+ case RTW_TX_QUEUE_H2C:
+ case RTW_TX_QUEUE_HI0:
+ txaddr = FIELD_PREP(REG_SDIO_CMD_ADDR_MSK,
+ REG_SDIO_CMD_ADDR_TXFF_HIGH);
+ break;
+ case RTW_TX_QUEUE_VI:
+ case RTW_TX_QUEUE_VO:
+ txaddr = FIELD_PREP(REG_SDIO_CMD_ADDR_MSK,
+ REG_SDIO_CMD_ADDR_TXFF_NORMAL);
+ break;
+ case RTW_TX_QUEUE_BE:
+ case RTW_TX_QUEUE_BK:
+ txaddr = FIELD_PREP(REG_SDIO_CMD_ADDR_MSK,
+ REG_SDIO_CMD_ADDR_TXFF_LOW);
+ break;
+ case RTW_TX_QUEUE_MGMT:
+ txaddr = FIELD_PREP(REG_SDIO_CMD_ADDR_MSK,
+ REG_SDIO_CMD_ADDR_TXFF_EXTRA);
+ break;
+ default:
+ rtw_warn(rtwdev, "Unsupported queue for TX addr: 0x%02x\n",
+ queue);
+ return 0;
+ }
+
+ txaddr += DIV_ROUND_UP(size, 4);
+
+ return txaddr;
+};
+
+static int rtw_sdio_read_port(struct rtw_dev *rtwdev, u8 *buf, size_t count)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ bool bus_claim = rtw_sdio_bus_claim_needed(rtwsdio);
+ u32 rxaddr = rtwsdio->rx_addr++;
+ int ret;
+
+ if (bus_claim)
+ sdio_claim_host(rtwsdio->sdio_func);
+
+ ret = sdio_memcpy_fromio(rtwsdio->sdio_func, buf,
+ RTW_SDIO_ADDR_RX_RX0FF_GEN(rxaddr), count);
+ if (ret)
+ rtw_warn(rtwdev,
+ "Failed to read %zu byte(s) from SDIO port 0x%08x",
+ count, rxaddr);
+
+ if (bus_claim)
+ sdio_release_host(rtwsdio->sdio_func);
+
+ return ret;
+}
+
+static int rtw_sdio_check_free_txpg(struct rtw_dev *rtwdev, u8 queue,
+ size_t count)
+{
+ unsigned int pages_free, pages_needed;
+
+ if (rtw_chip_wcpu_11n(rtwdev)) {
+ u32 free_txpg;
+
+ free_txpg = rtw_sdio_read32(rtwdev, REG_SDIO_FREE_TXPG);
+
+ switch (queue) {
+ case RTW_TX_QUEUE_BCN:
+ case RTW_TX_QUEUE_H2C:
+ case RTW_TX_QUEUE_HI0:
+ case RTW_TX_QUEUE_MGMT:
+ /* high */
+ pages_free = free_txpg & 0xff;
+ break;
+ case RTW_TX_QUEUE_VI:
+ case RTW_TX_QUEUE_VO:
+ /* normal */
+ pages_free = (free_txpg >> 8) & 0xff;
+ break;
+ case RTW_TX_QUEUE_BE:
+ case RTW_TX_QUEUE_BK:
+ /* low */
+ pages_free = (free_txpg >> 16) & 0xff;
+ break;
+ default:
+ rtw_warn(rtwdev, "Unknown mapping for queue %u\n", queue);
+ return -EINVAL;
+ }
+
+ /* add the pages from the public queue */
+ pages_free += (free_txpg >> 24) & 0xff;
+ } else {
+ u32 free_txpg[3];
+
+ free_txpg[0] = rtw_sdio_read32(rtwdev, REG_SDIO_FREE_TXPG);
+ free_txpg[1] = rtw_sdio_read32(rtwdev, REG_SDIO_FREE_TXPG + 4);
+ free_txpg[2] = rtw_sdio_read32(rtwdev, REG_SDIO_FREE_TXPG + 8);
+
+ switch (queue) {
+ case RTW_TX_QUEUE_BCN:
+ case RTW_TX_QUEUE_H2C:
+ case RTW_TX_QUEUE_HI0:
+ /* high */
+ pages_free = free_txpg[0] & 0xfff;
+ break;
+ case RTW_TX_QUEUE_VI:
+ case RTW_TX_QUEUE_VO:
+ /* normal */
+ pages_free = (free_txpg[0] >> 16) & 0xfff;
+ break;
+ case RTW_TX_QUEUE_BE:
+ case RTW_TX_QUEUE_BK:
+ /* low */
+ pages_free = free_txpg[1] & 0xfff;
+ break;
+ case RTW_TX_QUEUE_MGMT:
+ /* extra */
+ pages_free = free_txpg[2] & 0xfff;
+ break;
+ default:
+ rtw_warn(rtwdev, "Unknown mapping for queue %u\n", queue);
+ return -EINVAL;
+ }
+
+ /* add the pages from the public queue */
+ pages_free += (free_txpg[1] >> 16) & 0xfff;
+ }
+
+ pages_needed = DIV_ROUND_UP(count, rtwdev->chip->page_size);
+
+ if (pages_needed > pages_free) {
+ rtw_dbg(rtwdev, RTW_DBG_SDIO,
+ "Not enough free pages (%u needed, %u free) in queue %u for %zu bytes\n",
+ pages_needed, pages_free, queue, count);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static int rtw_sdio_write_port(struct rtw_dev *rtwdev, struct sk_buff *skb,
+ enum rtw_tx_queue_type queue)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ bool bus_claim;
+ size_t txsize;
+ u32 txaddr;
+ int ret;
+
+ txaddr = rtw_sdio_get_tx_addr(rtwdev, skb->len, queue);
+ if (!txaddr)
+ return -EINVAL;
+
+ txsize = sdio_align_size(rtwsdio->sdio_func, skb->len);
+
+ ret = rtw_sdio_check_free_txpg(rtwdev, queue, txsize);
+ if (ret)
+ return ret;
+
+ if (!IS_ALIGNED((unsigned long)skb->data, RTW_SDIO_DATA_PTR_ALIGN))
+ rtw_warn(rtwdev, "Got unaligned SKB in %s() for queue %u\n",
+ __func__, queue);
+
+ bus_claim = rtw_sdio_bus_claim_needed(rtwsdio);
+
+ if (bus_claim)
+ sdio_claim_host(rtwsdio->sdio_func);
+
+ ret = sdio_memcpy_toio(rtwsdio->sdio_func, txaddr, skb->data, txsize);
+
+ if (bus_claim)
+ sdio_release_host(rtwsdio->sdio_func);
+
+ if (ret)
+ rtw_warn(rtwdev,
+ "Failed to write %zu byte(s) to SDIO port 0x%08x",
+ txsize, txaddr);
+
+ return ret;
+}
+
+static void rtw_sdio_init(struct rtw_dev *rtwdev)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+
+ rtwsdio->irq_mask = REG_SDIO_HIMR_RX_REQUEST | REG_SDIO_HIMR_CPWM1;
+}
+
+static void rtw_sdio_enable_rx_aggregation(struct rtw_dev *rtwdev)
+{
+ u8 size, timeout;
+
+ if (rtw_chip_wcpu_11n(rtwdev)) {
+ size = 0x6;
+ timeout = 0x6;
+ } else {
+ size = 0xff;
+ timeout = 0x1;
+ }
+
+ /* Make the firmware honor the size limit configured below */
+ rtw_write32_set(rtwdev, REG_RXDMA_AGG_PG_TH, BIT_EN_PRE_CALC);
+
+ rtw_write8_set(rtwdev, REG_TXDMA_PQ_MAP, BIT_RXDMA_AGG_EN);
+
+ rtw_write16(rtwdev, REG_RXDMA_AGG_PG_TH,
+ FIELD_PREP(BIT_RXDMA_AGG_PG_TH, size) |
+ FIELD_PREP(BIT_DMA_AGG_TO_V1, timeout));
+
+ rtw_write8_set(rtwdev, REG_RXDMA_MODE, BIT_DMA_MODE);
+}
+
+static void rtw_sdio_enable_interrupt(struct rtw_dev *rtwdev)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+
+ rtw_write32(rtwdev, REG_SDIO_HIMR, rtwsdio->irq_mask);
+}
+
+static void rtw_sdio_disable_interrupt(struct rtw_dev *rtwdev)
+{
+ rtw_write32(rtwdev, REG_SDIO_HIMR, 0x0);
+}
+
+static u8 rtw_sdio_get_tx_qsel(struct rtw_dev *rtwdev, struct sk_buff *skb,
+ u8 queue)
+{
+ switch (queue) {
+ case RTW_TX_QUEUE_BCN:
+ return TX_DESC_QSEL_BEACON;
+ case RTW_TX_QUEUE_H2C:
+ return TX_DESC_QSEL_H2C;
+ case RTW_TX_QUEUE_MGMT:
+ if (rtw_chip_wcpu_11n(rtwdev))
+ return TX_DESC_QSEL_HIGH;
+ else
+ return TX_DESC_QSEL_MGMT;
+ case RTW_TX_QUEUE_HI0:
+ return TX_DESC_QSEL_HIGH;
+ default:
+ return skb->priority;
+ }
+}
+
+static int rtw_sdio_setup(struct rtw_dev *rtwdev)
+{
+ /* nothing to do */
+ return 0;
+}
+
+static int rtw_sdio_start(struct rtw_dev *rtwdev)
+{
+ rtw_sdio_enable_rx_aggregation(rtwdev);
+ rtw_sdio_enable_interrupt(rtwdev);
+
+ return 0;
+}
+
+static void rtw_sdio_stop(struct rtw_dev *rtwdev)
+{
+ rtw_sdio_disable_interrupt(rtwdev);
+}
+
+static void rtw_sdio_deep_ps_enter(struct rtw_dev *rtwdev)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ bool tx_empty = true;
+ u8 queue;
+
+ if (!rtw_fw_feature_check(&rtwdev->fw, FW_FEATURE_TX_WAKE)) {
+ /* Deep PS state is not allowed to TX-DMA */
+ for (queue = 0; queue < RTK_MAX_TX_QUEUE_NUM; queue++) {
+ /* BCN queue is rsvd page, does not have DMA interrupt
+ * H2C queue is managed by firmware
+ */
+ if (queue == RTW_TX_QUEUE_BCN ||
+ queue == RTW_TX_QUEUE_H2C)
+ continue;
+
+ /* check if there is any skb DMAing */
+ if (skb_queue_len(&rtwsdio->tx_queue[queue])) {
+ tx_empty = false;
+ break;
+ }
+ }
+ }
+
+ if (!tx_empty) {
+ rtw_dbg(rtwdev, RTW_DBG_PS,
+ "TX path not empty, cannot enter deep power save state\n");
+ return;
+ }
+
+ set_bit(RTW_FLAG_LEISURE_PS_DEEP, rtwdev->flags);
+ rtw_power_mode_change(rtwdev, true);
+}
+
+static void rtw_sdio_deep_ps_leave(struct rtw_dev *rtwdev)
+{
+ if (test_and_clear_bit(RTW_FLAG_LEISURE_PS_DEEP, rtwdev->flags))
+ rtw_power_mode_change(rtwdev, false);
+}
+
+static void rtw_sdio_deep_ps(struct rtw_dev *rtwdev, bool enter)
+{
+ if (enter && !test_bit(RTW_FLAG_LEISURE_PS_DEEP, rtwdev->flags))
+ rtw_sdio_deep_ps_enter(rtwdev);
+
+ if (!enter && test_bit(RTW_FLAG_LEISURE_PS_DEEP, rtwdev->flags))
+ rtw_sdio_deep_ps_leave(rtwdev);
+}
+
+static void rtw_sdio_tx_kick_off(struct rtw_dev *rtwdev)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+
+ queue_work(rtwsdio->txwq, &rtwsdio->tx_handler_data->work);
+}
+
+static void rtw_sdio_link_ps(struct rtw_dev *rtwdev, bool enter)
+{
+ /* nothing to do */
+}
+
+static void rtw_sdio_interface_cfg(struct rtw_dev *rtwdev)
+{
+ u32 val;
+
+ rtw_read32(rtwdev, REG_SDIO_FREE_TXPG);
+
+ val = rtw_read32(rtwdev, REG_SDIO_TX_CTRL);
+ val &= 0xfff8;
+ rtw_write32(rtwdev, REG_SDIO_TX_CTRL, val);
+}
+
+static struct rtw_sdio_tx_data *rtw_sdio_get_tx_data(struct sk_buff *skb)
+{
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+
+ BUILD_BUG_ON(sizeof(struct rtw_sdio_tx_data) >
+ sizeof(info->status.status_driver_data));
+
+ return (struct rtw_sdio_tx_data *)info->status.status_driver_data;
+}
+
+static void rtw_sdio_tx_skb_prepare(struct rtw_dev *rtwdev,
+ struct rtw_tx_pkt_info *pkt_info,
+ struct sk_buff *skb,
+ enum rtw_tx_queue_type queue)
+{
+ const struct rtw_chip_info *chip = rtwdev->chip;
+ unsigned long data_addr, aligned_addr;
+ size_t offset;
+ u8 *pkt_desc;
+
+ pkt_desc = skb_push(skb, chip->tx_pkt_desc_sz);
+
+ data_addr = (unsigned long)pkt_desc;
+ aligned_addr = ALIGN(data_addr, RTW_SDIO_DATA_PTR_ALIGN);
+
+ if (data_addr != aligned_addr) {
+ /* Ensure that the start of the pkt_desc is always aligned at
+ * RTW_SDIO_DATA_PTR_ALIGN.
+ */
+ offset = RTW_SDIO_DATA_PTR_ALIGN - (aligned_addr - data_addr);
+
+ pkt_desc = skb_push(skb, offset);
+
+ /* By inserting padding to align the start of the pkt_desc we
+ * need to inform the firmware that the actual data starts at
+ * a different offset than normal.
+ */
+ pkt_info->offset += offset;
+ }
+
+ memset(pkt_desc, 0, chip->tx_pkt_desc_sz);
+
+ pkt_info->qsel = rtw_sdio_get_tx_qsel(rtwdev, skb, queue);
+
+ rtw_tx_fill_tx_desc(pkt_info, skb);
+ rtw_tx_fill_txdesc_checksum(rtwdev, pkt_info, pkt_desc);
+}
+
+static int rtw_sdio_write_data(struct rtw_dev *rtwdev,
+ struct rtw_tx_pkt_info *pkt_info,
+ struct sk_buff *skb,
+ enum rtw_tx_queue_type queue)
+{
+ int ret;
+
+ rtw_sdio_tx_skb_prepare(rtwdev, pkt_info, skb, queue);
+
+ ret = rtw_sdio_write_port(rtwdev, skb, queue);
+ dev_kfree_skb_any(skb);
+
+ return ret;
+}
+
+static int rtw_sdio_write_data_rsvd_page(struct rtw_dev *rtwdev, u8 *buf,
+ u32 size)
+{
+ struct rtw_tx_pkt_info pkt_info = {};
+ struct sk_buff *skb;
+
+ skb = rtw_tx_write_data_rsvd_page_get(rtwdev, &pkt_info, buf, size);
+ if (!skb)
+ return -ENOMEM;
+
+ return rtw_sdio_write_data(rtwdev, &pkt_info, skb, RTW_TX_QUEUE_BCN);
+}
+
+static int rtw_sdio_write_data_h2c(struct rtw_dev *rtwdev, u8 *buf, u32 size)
+{
+ struct rtw_tx_pkt_info pkt_info = {};
+ struct sk_buff *skb;
+
+ skb = rtw_tx_write_data_h2c_get(rtwdev, &pkt_info, buf, size);
+ if (!skb)
+ return -ENOMEM;
+
+ return rtw_sdio_write_data(rtwdev, &pkt_info, skb, RTW_TX_QUEUE_H2C);
+}
+
+static int rtw_sdio_tx_write(struct rtw_dev *rtwdev,
+ struct rtw_tx_pkt_info *pkt_info,
+ struct sk_buff *skb)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ enum rtw_tx_queue_type queue = rtw_tx_queue_mapping(skb);
+ struct rtw_sdio_tx_data *tx_data;
+
+ rtw_sdio_tx_skb_prepare(rtwdev, pkt_info, skb, queue);
+
+ tx_data = rtw_sdio_get_tx_data(skb);
+ tx_data->sn = pkt_info->sn;
+
+ skb_queue_tail(&rtwsdio->tx_queue[queue], skb);
+
+ return 0;
+}
+
+static void rtw_sdio_tx_err_isr(struct rtw_dev *rtwdev)
+{
+ u32 val = rtw_read32(rtwdev, REG_TXDMA_STATUS);
+
+ rtw_write32(rtwdev, REG_TXDMA_STATUS, val);
+}
+
+static void rtw_sdio_rx_skb(struct rtw_dev *rtwdev, struct sk_buff *skb,
+ u32 pkt_offset, struct rtw_rx_pkt_stat *pkt_stat,
+ struct ieee80211_rx_status *rx_status)
+{
+ *IEEE80211_SKB_RXCB(skb) = *rx_status;
+
+ if (pkt_stat->is_c2h) {
+ skb_put(skb, pkt_stat->pkt_len + pkt_offset);
+ rtw_fw_c2h_cmd_rx_irqsafe(rtwdev, pkt_offset, skb);
+ return;
+ }
+
+ skb_put(skb, pkt_stat->pkt_len);
+ skb_reserve(skb, pkt_offset);
+
+ rtw_rx_stats(rtwdev, pkt_stat->vif, skb);
+
+ ieee80211_rx_irqsafe(rtwdev->hw, skb);
+}
+
+static void rtw_sdio_rxfifo_recv(struct rtw_dev *rtwdev, u32 rx_len)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ const struct rtw_chip_info *chip = rtwdev->chip;
+ u32 pkt_desc_sz = chip->rx_pkt_desc_sz;
+ struct ieee80211_rx_status rx_status;
+ struct rtw_rx_pkt_stat pkt_stat;
+ struct sk_buff *skb, *split_skb;
+ u32 pkt_offset, curr_pkt_len;
+ size_t bufsz;
+ u8 *rx_desc;
+ int ret;
+
+ bufsz = sdio_align_size(rtwsdio->sdio_func, rx_len);
+
+ skb = dev_alloc_skb(bufsz);
+ if (!skb)
+ return;
+
+ ret = rtw_sdio_read_port(rtwdev, skb->data, bufsz);
+ if (ret) {
+ dev_kfree_skb_any(skb);
+ return;
+ }
+
+ while (true) {
+ rx_desc = skb->data;
+ chip->ops->query_rx_desc(rtwdev, rx_desc, &pkt_stat,
+ &rx_status);
+ pkt_offset = pkt_desc_sz + pkt_stat.drv_info_sz +
+ pkt_stat.shift;
+
+ curr_pkt_len = ALIGN(pkt_offset + pkt_stat.pkt_len,
+ RTW_SDIO_DATA_PTR_ALIGN);
+
+ if ((curr_pkt_len + pkt_desc_sz) >= rx_len) {
+ /* Use the original skb (with it's adjusted offset)
+ * when processing the last (or even the only) entry to
+ * have it's memory freed automatically.
+ */
+ rtw_sdio_rx_skb(rtwdev, skb, pkt_offset, &pkt_stat,
+ &rx_status);
+ break;
+ }
+
+ split_skb = dev_alloc_skb(curr_pkt_len);
+ if (!split_skb) {
+ rtw_sdio_rx_skb(rtwdev, skb, pkt_offset, &pkt_stat,
+ &rx_status);
+ break;
+ }
+
+ skb_copy_header(split_skb, skb);
+ memcpy(split_skb->data, skb->data, curr_pkt_len);
+
+ rtw_sdio_rx_skb(rtwdev, split_skb, pkt_offset, &pkt_stat,
+ &rx_status);
+
+ /* Move to the start of the next RX descriptor */
+ skb_reserve(skb, curr_pkt_len);
+ rx_len -= curr_pkt_len;
+ }
+}
+
+static void rtw_sdio_rx_isr(struct rtw_dev *rtwdev)
+{
+ u32 rx_len, total_rx_bytes = 0;
+
+ while (total_rx_bytes < SZ_64K) {
+ if (rtw_chip_wcpu_11n(rtwdev))
+ rx_len = rtw_read16(rtwdev, REG_SDIO_RX0_REQ_LEN);
+ else
+ rx_len = rtw_read32(rtwdev, REG_SDIO_RX0_REQ_LEN);
+
+ if (!rx_len)
+ break;
+
+ rtw_sdio_rxfifo_recv(rtwdev, rx_len);
+
+ total_rx_bytes += rx_len;
+ }
+}
+
+static void rtw_sdio_handle_interrupt(struct sdio_func *sdio_func)
+{
+ struct ieee80211_hw *hw = sdio_get_drvdata(sdio_func);
+ struct rtw_sdio *rtwsdio;
+ struct rtw_dev *rtwdev;
+ u32 hisr;
+
+ rtwdev = hw->priv;
+ rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+
+ rtwsdio->irq_thread = current;
+
+ hisr = rtw_read32(rtwdev, REG_SDIO_HISR);
+
+ if (hisr & REG_SDIO_HISR_TXERR)
+ rtw_sdio_tx_err_isr(rtwdev);
+ if (hisr & REG_SDIO_HISR_RX_REQUEST) {
+ hisr &= ~REG_SDIO_HISR_RX_REQUEST;
+ rtw_sdio_rx_isr(rtwdev);
+ }
+
+ rtw_write32(rtwdev, REG_SDIO_HISR, hisr);
+
+ rtwsdio->irq_thread = NULL;
+}
+
+static int __maybe_unused rtw_sdio_suspend(struct device *dev)
+{
+ struct sdio_func *func = dev_to_sdio_func(dev);
+ struct ieee80211_hw *hw = dev_get_drvdata(dev);
+ struct rtw_dev *rtwdev = hw->priv;
+ int ret;
+
+ ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
+ if (ret)
+ rtw_err(rtwdev, "Failed to host PM flag MMC_PM_KEEP_POWER");
+
+ return ret;
+}
+
+static int __maybe_unused rtw_sdio_resume(struct device *dev)
+{
+ return 0;
+}
+
+SIMPLE_DEV_PM_OPS(rtw_sdio_pm_ops, rtw_sdio_suspend, rtw_sdio_resume);
+EXPORT_SYMBOL(rtw_sdio_pm_ops);
+
+static int rtw_sdio_claim(struct rtw_dev *rtwdev, struct sdio_func *sdio_func)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ int ret;
+
+ sdio_claim_host(sdio_func);
+
+ ret = sdio_enable_func(sdio_func);
+ if (ret) {
+ rtw_err(rtwdev, "Failed to enable SDIO func");
+ goto err_release_host;
+ }
+
+ ret = sdio_set_block_size(sdio_func, RTW_SDIO_BLOCK_SIZE);
+ if (ret) {
+ rtw_err(rtwdev, "Failed to set SDIO block size to 512");
+ goto err_disable_func;
+ }
+
+ rtwsdio->sdio_func = sdio_func;
+
+ rtwsdio->sdio3_bus_mode = mmc_card_uhs(sdio_func->card);
+
+ sdio_set_drvdata(sdio_func, rtwdev->hw);
+ SET_IEEE80211_DEV(rtwdev->hw, &sdio_func->dev);
+
+ sdio_release_host(sdio_func);
+
+ return 0;
+
+err_disable_func:
+ sdio_disable_func(sdio_func);
+err_release_host:
+ sdio_release_host(sdio_func);
+ return ret;
+}
+
+static void rtw_sdio_declaim(struct rtw_dev *rtwdev,
+ struct sdio_func *sdio_func)
+{
+ sdio_claim_host(sdio_func);
+ sdio_disable_func(sdio_func);
+ sdio_release_host(sdio_func);
+}
+
+static struct rtw_hci_ops rtw_sdio_ops = {
+ .tx_write = rtw_sdio_tx_write,
+ .tx_kick_off = rtw_sdio_tx_kick_off,
+ .setup = rtw_sdio_setup,
+ .start = rtw_sdio_start,
+ .stop = rtw_sdio_stop,
+ .deep_ps = rtw_sdio_deep_ps,
+ .link_ps = rtw_sdio_link_ps,
+ .interface_cfg = rtw_sdio_interface_cfg,
+
+ .read8 = rtw_sdio_read8,
+ .read16 = rtw_sdio_read16,
+ .read32 = rtw_sdio_read32,
+ .write8 = rtw_sdio_write8,
+ .write16 = rtw_sdio_write16,
+ .write32 = rtw_sdio_write32,
+ .write_data_rsvd_page = rtw_sdio_write_data_rsvd_page,
+ .write_data_h2c = rtw_sdio_write_data_h2c,
+};
+
+static int rtw_sdio_request_irq(struct rtw_dev *rtwdev,
+ struct sdio_func *sdio_func)
+{
+ int ret;
+
+ sdio_claim_host(sdio_func);
+ ret = sdio_claim_irq(sdio_func, &rtw_sdio_handle_interrupt);
+ sdio_release_host(sdio_func);
+
+ if (ret) {
+ rtw_err(rtwdev, "failed to claim SDIO IRQ");
+ return ret;
+ }
+
+ return 0;
+}
+
+static void rtw_sdio_indicate_tx_status(struct rtw_dev *rtwdev,
+ struct sk_buff *skb)
+{
+ struct rtw_sdio_tx_data *tx_data = rtw_sdio_get_tx_data(skb);
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_hw *hw = rtwdev->hw;
+
+ /* enqueue to wait for tx report */
+ if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) {
+ rtw_tx_report_enqueue(rtwdev, skb, tx_data->sn);
+ return;
+ }
+
+ /* always ACK for others, then they won't be marked as drop */
+ ieee80211_tx_info_clear_status(info);
+ if (info->flags & IEEE80211_TX_CTL_NO_ACK)
+ info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
+ else
+ info->flags |= IEEE80211_TX_STAT_ACK;
+
+ ieee80211_tx_status_irqsafe(hw, skb);
+}
+
+static void rtw_sdio_process_tx_queue(struct rtw_dev *rtwdev,
+ enum rtw_tx_queue_type queue)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ struct sk_buff *skb;
+ int ret;
+
+ skb = skb_dequeue(&rtwsdio->tx_queue[queue]);
+ if (!skb)
+ return;
+
+ ret = rtw_sdio_write_port(rtwdev, skb, queue);
+ if (ret) {
+ skb_queue_head(&rtwsdio->tx_queue[queue], skb);
+ return;
+ }
+
+ if (queue <= RTW_TX_QUEUE_VO)
+ rtw_sdio_indicate_tx_status(rtwdev, skb);
+ else
+ dev_kfree_skb_any(skb);
+}
+
+static void rtw_sdio_tx_handler(struct work_struct *work)
+{
+ struct rtw_sdio_work_data *work_data =
+ container_of(work, struct rtw_sdio_work_data, work);
+ struct rtw_sdio *rtwsdio;
+ struct rtw_dev *rtwdev;
+ int limit, queue;
+
+ rtwdev = work_data->rtwdev;
+ rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+
+ if (!rtw_fw_feature_check(&rtwdev->fw, FW_FEATURE_TX_WAKE))
+ rtw_sdio_deep_ps_leave(rtwdev);
+
+ for (queue = RTK_MAX_TX_QUEUE_NUM - 1; queue >= 0; queue--) {
+ for (limit = 0; limit < 1000; limit++) {
+ rtw_sdio_process_tx_queue(rtwdev, queue);
+
+ if (skb_queue_empty(&rtwsdio->tx_queue[queue]))
+ break;
+ }
+ }
+}
+
+static void rtw_sdio_free_irq(struct rtw_dev *rtwdev,
+ struct sdio_func *sdio_func)
+{
+ sdio_claim_host(sdio_func);
+ sdio_release_irq(sdio_func);
+ sdio_release_host(sdio_func);
+}
+
+static int rtw_sdio_init_tx(struct rtw_dev *rtwdev)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ int i;
+
+ rtwsdio->txwq = create_singlethread_workqueue("rtw88_sdio: tx wq");
+ if (!rtwsdio->txwq) {
+ rtw_err(rtwdev, "failed to create TX work queue\n");
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < RTK_MAX_TX_QUEUE_NUM; i++)
+ skb_queue_head_init(&rtwsdio->tx_queue[i]);
+ rtwsdio->tx_handler_data = kmalloc(sizeof(*rtwsdio->tx_handler_data),
+ GFP_KERNEL);
+ if (!rtwsdio->tx_handler_data)
+ goto err_destroy_wq;
+
+ rtwsdio->tx_handler_data->rtwdev = rtwdev;
+ INIT_WORK(&rtwsdio->tx_handler_data->work, rtw_sdio_tx_handler);
+
+ return 0;
+
+err_destroy_wq:
+ destroy_workqueue(rtwsdio->txwq);
+ return -ENOMEM;
+}
+
+static void rtw_sdio_deinit_tx(struct rtw_dev *rtwdev)
+{
+ struct rtw_sdio *rtwsdio = (struct rtw_sdio *)rtwdev->priv;
+ int i;
+
+ for (i = 0; i < RTK_MAX_TX_QUEUE_NUM; i++)
+ skb_queue_purge(&rtwsdio->tx_queue[i]);
+
+ flush_workqueue(rtwsdio->txwq);
+ destroy_workqueue(rtwsdio->txwq);
+ kfree(rtwsdio->tx_handler_data);
+}
+
+int rtw_sdio_probe(struct sdio_func *sdio_func,
+ const struct sdio_device_id *id)
+{
+ struct ieee80211_hw *hw;
+ struct rtw_dev *rtwdev;
+ int drv_data_size;
+ int ret;
+
+ drv_data_size = sizeof(struct rtw_dev) + sizeof(struct rtw_sdio);
+ hw = ieee80211_alloc_hw(drv_data_size, &rtw_ops);
+ if (!hw) {
+ dev_err(&sdio_func->dev, "failed to allocate hw");
+ return -ENOMEM;
+ }
+
+ rtwdev = hw->priv;
+ rtwdev->hw = hw;
+ rtwdev->dev = &sdio_func->dev;
+ rtwdev->chip = (struct rtw_chip_info *)id->driver_data;
+ rtwdev->hci.ops = &rtw_sdio_ops;
+ rtwdev->hci.type = RTW_HCI_TYPE_SDIO;
+
+ ret = rtw_core_init(rtwdev);
+ if (ret)
+ goto err_release_hw;
+
+ rtw_dbg(rtwdev, RTW_DBG_SDIO,
+ "rtw88 SDIO probe: vendor=0x%04x device=%04x class=%02x",
+ id->vendor, id->device, id->class);
+
+ ret = rtw_sdio_claim(rtwdev, sdio_func);
+ if (ret) {
+ rtw_err(rtwdev, "failed to claim SDIO device");
+ goto err_deinit_core;
+ }
+
+ rtw_sdio_init(rtwdev);
+
+ ret = rtw_sdio_init_tx(rtwdev);
+ if (ret) {
+ rtw_err(rtwdev, "failed to init SDIO TX queue\n");
+ goto err_sdio_declaim;
+ }
+
+ ret = rtw_chip_info_setup(rtwdev);
+ if (ret) {
+ rtw_err(rtwdev, "failed to setup chip information");
+ goto err_destroy_txwq;
+ }
+
+ ret = rtw_sdio_request_irq(rtwdev, sdio_func);
+ if (ret)
+ goto err_destroy_txwq;
+
+ ret = rtw_register_hw(rtwdev, hw);
+ if (ret) {
+ rtw_err(rtwdev, "failed to register hw");
+ goto err_free_irq;
+ }
+
+ return 0;
+
+err_free_irq:
+ rtw_sdio_free_irq(rtwdev, sdio_func);
+err_destroy_txwq:
+ rtw_sdio_deinit_tx(rtwdev);
+err_sdio_declaim:
+ rtw_sdio_declaim(rtwdev, sdio_func);
+err_deinit_core:
+ rtw_core_deinit(rtwdev);
+err_release_hw:
+ ieee80211_free_hw(hw);
+
+ return ret;
+}
+EXPORT_SYMBOL(rtw_sdio_probe);
+
+void rtw_sdio_remove(struct sdio_func *sdio_func)
+{
+ struct ieee80211_hw *hw = sdio_get_drvdata(sdio_func);
+ struct rtw_dev *rtwdev;
+
+ if (!hw)
+ return;
+
+ rtwdev = hw->priv;
+
+ rtw_unregister_hw(rtwdev, hw);
+ rtw_sdio_disable_interrupt(rtwdev);
+ rtw_sdio_free_irq(rtwdev, sdio_func);
+ rtw_sdio_declaim(rtwdev, sdio_func);
+ rtw_sdio_deinit_tx(rtwdev);
+ rtw_core_deinit(rtwdev);
+ ieee80211_free_hw(hw);
+}
+EXPORT_SYMBOL(rtw_sdio_remove);
+
+void rtw_sdio_shutdown(struct device *dev)
+{
+ struct sdio_func *sdio_func = dev_to_sdio_func(dev);
+ const struct rtw_chip_info *chip;
+ struct ieee80211_hw *hw;
+ struct rtw_dev *rtwdev;
+
+ hw = sdio_get_drvdata(sdio_func);
+ if (!hw)
+ return;
+
+ rtwdev = hw->priv;
+ chip = rtwdev->chip;
+
+ if (chip->ops->shutdown)
+ chip->ops->shutdown(rtwdev);
+}
+EXPORT_SYMBOL(rtw_sdio_shutdown);
+
+MODULE_AUTHOR("Martin Blumenstingl");
+MODULE_AUTHOR("Jernej Skrabec");
+MODULE_DESCRIPTION("Realtek 802.11ac wireless SDIO driver");
+MODULE_LICENSE("Dual BSD/GPL");
projects / platform / kernel / linux-rpi.git / commitdiff