---
drivers/net/wireless/nxp/nxpwifi/sdio.c | 2648 +++++++++++++++++++++++
1 file changed, 2648 insertions(+)
create mode 100644 drivers/net/wireless/nxp/nxpwifi/sdio.c
diff --git a/drivers/net/wireless/nxp/nxpwifi/sdio.c b/drivers/net/wireless/nxp/nxpwifi/sdio.c
new file mode 100644
index 000000000000..9bc6338c95ec
--- /dev/null
+++ b/drivers/net/wireless/nxp/nxpwifi/sdio.c
@@ -0,0 +1,2648 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * NXP Wireless LAN device driver: SDIO specific handling
+ *
+ * Copyright 2011-2024 NXP
+ */
+
+#include <linux/firmware.h>
+#include <linux/completion.h>
+#include <linux/mmc/sdio.h>
+#include <linux/mmc/sdio_ids.h>
+#include <linux/mmc/sdio_func.h>
+#include <linux/mmc/card.h>
+#include <linux/mmc/host.h>
+
+#include "decl.h"
+#include "cfg.h"
+#include "util.h"
+#include "fw.h"
+#include "main.h"
+#include "wmm.h"
+#include "11n.h"
+#include "sdio.h"
+
+#define SDIO_VERSION "1.0"
+
+static void nxpwifi_sdio_work(struct work_struct *work);
+
+static struct nxpwifi_if_ops sdio_ops;
+
+static const struct nxpwifi_sdio_card_reg nxpwifi_reg_iw61x = {
+ .start_rd_port = 0,
+ .start_wr_port = 0,
+ .base_0_reg = 0xF8,
+ .base_1_reg = 0xF9,
+ .poll_reg = 0x5C,
+ .host_int_enable = UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK |
+ CMD_PORT_UPLD_INT_MASK | CMD_PORT_DNLD_INT_MASK,
+ .host_int_rsr_reg = 0x4,
+ .host_int_status_reg = 0x0C,
+ .host_int_mask_reg = 0x08,
+ .host_strap_reg = 0xF4,
+ .host_strap_mask = 0x01,
+ .host_strap_value = 0x00,
+ .status_reg_0 = 0xE8,
+ .status_reg_1 = 0xE9,
+ .sdio_int_mask = 0xff,
+ .data_port_mask = 0xffffffff,
+ .io_port_0_reg = 0xE4,
+ .io_port_1_reg = 0xE5,
+ .io_port_2_reg = 0xE6,
+ .max_mp_regs = 196,
+ .rd_bitmap_l = 0x10,
+ .rd_bitmap_u = 0x11,
+ .rd_bitmap_1l = 0x12,
+ .rd_bitmap_1u = 0x13,
+ .wr_bitmap_l = 0x14,
+ .wr_bitmap_u = 0x15,
+ .wr_bitmap_1l = 0x16,
+ .wr_bitmap_1u = 0x17,
+ .rd_len_p0_l = 0x18,
+ .rd_len_p0_u = 0x19,
+ .card_misc_cfg_reg = 0xd8,
+ .card_cfg_2_1_reg = 0xd9,
+ .cmd_rd_len_0 = 0xc0,
+ .cmd_rd_len_1 = 0xc1,
+ .cmd_rd_len_2 = 0xc2,
+ .cmd_rd_len_3 = 0xc3,
+ .cmd_cfg_0 = 0xc4,
+ .cmd_cfg_1 = 0xc5,
+ .cmd_cfg_2 = 0xc6,
+ .cmd_cfg_3 = 0xc7,
+ .fw_dump_host_ready = 0xcc,
+ .fw_dump_ctrl = 0xf9,
+ .fw_dump_start = 0xf1,
+ .fw_dump_end = 0xf8,
+ .func1_dump_reg_start = 0x10,
+ .func1_dump_reg_end = 0x17,
+ .func1_scratch_reg = 0xE8,
+ .func1_spec_reg_num = 13,
+ .func1_spec_reg_table = {0x08, 0x58, 0x5C, 0x5D, 0x60,
+ 0x61, 0x62, 0x64, 0x65, 0x66,
+ 0x68, 0x69, 0x6a},
+};
+
+static const struct nxpwifi_sdio_device nxpwifi_sdio_iw61x = {
+ .firmware = IW61X_SDIO_FW_NAME,
+ .reg = &nxpwifi_reg_iw61x,
+ .max_ports = 32,
+ .mp_agg_pkt_limit = 16,
+ .tx_buf_size = NXPWIFI_TX_DATA_BUF_SIZE_4K,
+ .mp_tx_agg_buf_size = NXPWIFI_MP_AGGR_BSIZE_MAX,
+ .mp_rx_agg_buf_size = NXPWIFI_MP_AGGR_BSIZE_MAX,
+ .can_dump_fw = true,
+ .fw_dump_enh = true,
+ .can_ext_scan = true,
+};
+
+static struct memory_type_mapping generic_mem_type_map[] = {
+ {"DUMP", NULL, 0, 0xDD},
+};
+
+static struct memory_type_mapping mem_type_mapping_tbl[] = {
+ {"ITCM", NULL, 0, 0xF0},
+ {"DTCM", NULL, 0, 0xF1},
+ {"SQRAM", NULL, 0, 0xF2},
+ {"APU", NULL, 0, 0xF3},
+ {"CIU", NULL, 0, 0xF4},
+ {"ICU", NULL, 0, 0xF5},
+ {"MAC", NULL, 0, 0xF6},
+ {"EXT7", NULL, 0, 0xF7},
+ {"EXT8", NULL, 0, 0xF8},
+ {"EXT9", NULL, 0, 0xF9},
+ {"EXT10", NULL, 0, 0xFA},
+ {"EXT11", NULL, 0, 0xFB},
+ {"EXT12", NULL, 0, 0xFC},
+ {"EXT13", NULL, 0, 0xFD},
+ {"EXTLAST", NULL, 0, 0xFE},
+};
+
+static const struct of_device_id nxpwifi_sdio_of_match_table[] __maybe_unused = {
+ { .compatible = "nxp,iw61x" },
+ { }
+};
+
+/* This function parse device tree node using mmc subnode devicetree API.
+ * The device node is saved in card->plt_of_node.
+ * if the device tree node exist and include interrupts attributes, this
+ * function will also request platform specific wakeup interrupt.
+ */
+static int nxpwifi_sdio_probe_of(struct device *dev)
+{
+ if (!of_match_node(nxpwifi_sdio_of_match_table, dev->of_node)) {
+ dev_err(dev, "required compatible string missing\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* SDIO probe.
+ *
+ * This function probes an nxpwifi device and registers it. It allocates
+ * the card structure, enables SDIO function number and initiates the
+ * device registration and initialization procedure by adding a logical
+ * interface.
+ */
+static int
+nxpwifi_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
+{
+ int ret;
+ struct sdio_mmc_card *card = NULL;
+
+ pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n",
+ func->vendor, func->device, func->class, func->num);
+
+ card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
+ if (!card)
+ return -ENOMEM;
+
+ init_completion(&card->fw_done);
+
+ card->func = func;
+
+ func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
+
+ if (id->driver_data) {
+ struct nxpwifi_sdio_device *data = (void *)id->driver_data;
+
+ card->firmware = data->firmware;
+ card->firmware_sdiouart = data->firmware_sdiouart;
+ card->reg = data->reg;
+ card->max_ports = data->max_ports;
+ card->mp_agg_pkt_limit = data->mp_agg_pkt_limit;
+ card->tx_buf_size = data->tx_buf_size;
+ card->mp_tx_agg_buf_size = data->mp_tx_agg_buf_size;
+ card->mp_rx_agg_buf_size = data->mp_rx_agg_buf_size;
+ card->can_dump_fw = data->can_dump_fw;
+ card->fw_dump_enh = data->fw_dump_enh;
+ card->can_ext_scan = data->can_ext_scan;
+ INIT_WORK(&card->work, nxpwifi_sdio_work);
+ }
+
+ sdio_claim_host(func);
+ ret = sdio_enable_func(func);
+ sdio_release_host(func);
+
+ if (ret) {
+ dev_err(&func->dev, "failed to enable function\n");
+ return ret;
+ }
+
+ /* device tree node parsing and platform specific configuration*/
+ if (func->dev.of_node) {
+ ret = nxpwifi_sdio_probe_of(&func->dev);
+ if (ret)
+ goto err_disable;
+ }
+
+ ret = nxpwifi_add_card(card, &card->fw_done, &sdio_ops,
+ NXPWIFI_SDIO, &func->dev);
+ if (ret) {
+ dev_err(&func->dev, "add card failed\n");
+ goto err_disable;
+ }
+
+ return 0;
+
+err_disable:
+ sdio_claim_host(func);
+ sdio_disable_func(func);
+ sdio_release_host(func);
+
+ return ret;
+}
+
+/* SDIO resume.
+ *
+ * Kernel needs to suspend all functions separately. Therefore all
+ * registered functions must have drivers with suspend and resume
+ * methods. Failing that the kernel simply removes the whole card.
+ *
+ * If already not resumed, this function turns on the traffic and
+ * sends a host sleep cancel request to the firmware.
+ */
+static int nxpwifi_sdio_resume(struct device *dev)
+{
+ struct sdio_func *func = dev_to_sdio_func(dev);
+ struct sdio_mmc_card *card;
+ struct nxpwifi_adapter *adapter;
+
+ card = sdio_get_drvdata(func);
+ if (!card || !card->adapter) {
+ dev_err(dev, "resume: invalid card or adapter\n");
+ return 0;
+ }
+
+ adapter = card->adapter;
+
+ if (!test_bit(NXPWIFI_IS_SUSPENDED, &adapter->work_flags)) {
+ nxpwifi_dbg(adapter, WARN,
+ "device already resumed\n");
+ return 0;
+ }
+
+ clear_bit(NXPWIFI_IS_SUSPENDED, &adapter->work_flags);
+
+ /* Disable Host Sleep */
+ nxpwifi_cancel_hs(nxpwifi_get_priv(adapter, NXPWIFI_BSS_ROLE_STA),
+ NXPWIFI_SYNC_CMD);
+
+ nxpwifi_disable_wake(adapter);
+
+ return 0;
+}
+
+/* Write data into SDIO card register. Caller claims SDIO device. */
+static int
+nxpwifi_write_reg_locked(struct sdio_func *func, u32 reg, u8 data)
+{
+ int ret;
+
+ sdio_writeb(func, data, reg, &ret);
+ return ret;
+}
+
+/* This function writes data into SDIO card register.
+ */
+static int
+nxpwifi_write_reg(struct nxpwifi_adapter *adapter, u32 reg, u8 data)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ int ret;
+
+ sdio_claim_host(card->func);
+ ret = nxpwifi_write_reg_locked(card->func, reg, data);
+ sdio_release_host(card->func);
+
+ return ret;
+}
+
+/* This function reads data from SDIO card register.
+ */
+static int
+nxpwifi_read_reg(struct nxpwifi_adapter *adapter, u32 reg, u8 *data)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ int ret;
+ u8 val;
+
+ sdio_claim_host(card->func);
+ val = sdio_readb(card->func, reg, &ret);
+ sdio_release_host(card->func);
+
+ *data = val;
+
+ return ret;
+}
+
+/* This function writes multiple data into SDIO card memory.
+ *
+ * This does not work in suspended mode.
+ */
+static int
+nxpwifi_write_data_sync(struct nxpwifi_adapter *adapter,
+ u8 *buffer, u32 pkt_len, u32 port)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ int ret;
+ u8 blk_mode =
+ (port & NXPWIFI_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE;
+ u32 blk_size = (blk_mode == BLOCK_MODE) ? NXPWIFI_SDIO_BLOCK_SIZE : 1;
+ u32 blk_cnt =
+ (blk_mode ==
+ BLOCK_MODE) ? (pkt_len /
+ NXPWIFI_SDIO_BLOCK_SIZE) : pkt_len;
+ u32 ioport = (port & NXPWIFI_SDIO_IO_PORT_MASK);
+
+ if (test_bit(NXPWIFI_IS_SUSPENDED, &adapter->work_flags)) {
+ nxpwifi_dbg(adapter, ERROR,
+ "%s: not allowed while suspended\n", __func__);
+ return -EPERM;
+ }
+
+ sdio_claim_host(card->func);
+
+ ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size);
+
+ sdio_release_host(card->func);
+
+ return ret;
+}
+
+/* This function reads multiple data from SDIO card memory.
+ */
+static int nxpwifi_read_data_sync(struct nxpwifi_adapter *adapter, u8 *buffer,
+ u32 len, u32 port, u8 claim)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ int ret;
+ u8 blk_mode = (port & NXPWIFI_SDIO_BYTE_MODE_MASK) ? BYTE_MODE
+ : BLOCK_MODE;
+ u32 blk_size = (blk_mode == BLOCK_MODE) ? NXPWIFI_SDIO_BLOCK_SIZE : 1;
+ u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / NXPWIFI_SDIO_BLOCK_SIZE)
+ : len;
+ u32 ioport = (port & NXPWIFI_SDIO_IO_PORT_MASK);
+
+ if (claim)
+ sdio_claim_host(card->func);
+
+ ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size);
+
+ if (claim)
+ sdio_release_host(card->func);
+
+ return ret;
+}
+
+/* This function reads the firmware status.
+ */
+static int
+nxpwifi_sdio_read_fw_status(struct nxpwifi_adapter *adapter, u16 *dat)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ const struct nxpwifi_sdio_card_reg *reg = card->reg;
+ u8 fws0, fws1;
+ int ret;
+
+ ret = nxpwifi_read_reg(adapter, reg->status_reg_0, &fws0);
+ if (ret)
+ return ret;
+
+ ret = nxpwifi_read_reg(adapter, reg->status_reg_1, &fws1);
+ if (ret)
+ return ret;
+
+ *dat = (u16)((fws1 << 8) | fws0);
+ return ret;
+}
+
+/* This function checks the firmware status in card.
+ */
+static int nxpwifi_check_fw_status(struct nxpwifi_adapter *adapter,
+ u32 poll_num)
+{
+ int ret = 0;
+ u16 firmware_stat = 0;
+ u32 tries;
+
+ for (tries = 0; tries < poll_num; tries++) {
+ ret = nxpwifi_sdio_read_fw_status(adapter, &firmware_stat);
+ if (ret)
+ continue;
+ if (firmware_stat == FIRMWARE_READY_SDIO) {
+ ret = 0;
+ break;
+ }
+
+ msleep(100);
+ ret = -EPERM;
+ }
+
+ if (firmware_stat == FIRMWARE_READY_SDIO)
+ /* firmware might pretend to be ready, when it's not.
+ * Wait a little bit more as a workaround.
+ */
+ msleep(100);
+
+ return ret;
+}
+
+/* This function checks if WLAN is the winner.
+ */
+static int nxpwifi_check_winner_status(struct nxpwifi_adapter *adapter)
+{
+ int ret;
+ u8 winner = 0;
+ struct sdio_mmc_card *card = adapter->card;
+
+ ret = nxpwifi_read_reg(adapter, card->reg->status_reg_0, &winner);
+ if (ret)
+ return ret;
+
+ if (winner)
+ adapter->winner = 0;
+ else
+ adapter->winner = 1;
+
+ return ret;
+}
+
+/* SDIO remove.
+ *
+ * This function removes the interface and frees up the card structure.
+ */
+static void
+nxpwifi_sdio_remove(struct sdio_func *func)
+{
+ struct sdio_mmc_card *card;
+ struct nxpwifi_adapter *adapter;
+ struct nxpwifi_private *priv;
+ int ret = 0;
+ u16 firmware_stat;
+
+ card = sdio_get_drvdata(func);
+ if (!card)
+ return;
+
+ wait_for_completion(&card->fw_done);
+
+ adapter = card->adapter;
+ if (!adapter || !adapter->priv_num)
+ return;
+
+ nxpwifi_dbg(adapter, INFO, "info: SDIO func num=%d\n", func->num);
+
+ ret = nxpwifi_sdio_read_fw_status(adapter, &firmware_stat);
+ if (!ret && firmware_stat == FIRMWARE_READY_SDIO) {
+ nxpwifi_deauthenticate_all(adapter);
+
+ priv = nxpwifi_get_priv(adapter, NXPWIFI_BSS_ROLE_ANY);
+ nxpwifi_disable_auto_ds(priv);
+ nxpwifi_init_shutdown_fw(priv, NXPWIFI_FUNC_SHUTDOWN);
+ }
+
+ nxpwifi_remove_card(adapter);
+}
+
+/* SDIO suspend.
+ *
+ * Kernel needs to suspend all functions separately. Therefore all
+ * registered functions must have drivers with suspend and resume
+ * methods. Failing that the kernel simply removes the whole card.
+ *
+ * If already not suspended, this function allocates and sends a host
+ * sleep activate request to the firmware and turns off the traffic.
+ */
+static int nxpwifi_sdio_suspend(struct device *dev)
+{
+ struct sdio_func *func = dev_to_sdio_func(dev);
+ struct sdio_mmc_card *card;
+ struct nxpwifi_adapter *adapter;
+ mmc_pm_flag_t pm_flag = 0;
+ int ret = 0;
+
+ pm_flag = sdio_get_host_pm_caps(func);
+ pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
+ sdio_func_id(func), pm_flag);
+ if (!(pm_flag & MMC_PM_KEEP_POWER)) {
+ dev_err(dev,
+ "%s: cannot remain alive while host is suspended\n",
+ sdio_func_id(func));
+ return -EPERM;
+ }
+
+ card = sdio_get_drvdata(func);
+ if (!card) {
+ dev_err(dev, "suspend: invalid card\n");
+ return 0;
+ }
+
+ /* Might still be loading firmware */
+ wait_for_completion(&card->fw_done);
+
+ adapter = card->adapter;
+ if (!adapter) {
+ dev_err(dev, "adapter is not valid\n");
+ return 0;
+ }
+
+ if (!adapter->is_up)
+ return -EBUSY;
+
+ nxpwifi_enable_wake(adapter);
+
+ /* Enable the Host Sleep */
+ if (!nxpwifi_enable_hs(adapter)) {
+ nxpwifi_dbg(adapter, ERROR,
+ "cmd: failed to suspend\n");
+ clear_bit(NXPWIFI_IS_HS_ENABLING, &adapter->work_flags);
+ nxpwifi_disable_wake(adapter);
+ return -EPERM;
+ }
+
+ nxpwifi_dbg(adapter, INFO,
+ "cmd: suspend with MMC_PM_KEEP_POWER\n");
+ ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
+
+ /* Indicate device suspended */
+ set_bit(NXPWIFI_IS_SUSPENDED, &adapter->work_flags);
+ clear_bit(NXPWIFI_IS_HS_ENABLING, &adapter->work_flags);
+
+ return ret;
+}
+
+static void nxpwifi_sdio_coredump(struct device *dev)
+{
+ struct sdio_func *func = dev_to_sdio_func(dev);
+ struct sdio_mmc_card *card;
+
+ card = sdio_get_drvdata(func);
+ if (!test_and_set_bit(NXPWIFI_IFACE_WORK_DEVICE_DUMP,
+ &card->work_flags))
+ nxpwifi_queue_work(card->adapter, &card->work);
+}
+
+/* WLAN IDs */
+static const struct sdio_device_id nxpwifi_ids[] = {
+ {SDIO_DEVICE(SDIO_VENDOR_ID_NXP, SDIO_DEVICE_ID_NXP_IW61X),
+ .driver_data = (unsigned long)&nxpwifi_sdio_iw61x},
+ {},
+};
+
+MODULE_DEVICE_TABLE(sdio, nxpwifi_ids);
+
+static const struct dev_pm_ops nxpwifi_sdio_pm_ops = {
+ .suspend = nxpwifi_sdio_suspend,
+ .resume = nxpwifi_sdio_resume,
+};
+
+static struct sdio_driver nxpwifi_sdio = {
+ .name = "nxpwifi_sdio",
+ .id_table = nxpwifi_ids,
+ .probe = nxpwifi_sdio_probe,
+ .remove = nxpwifi_sdio_remove,
+ .drv = {
+ .owner = THIS_MODULE,
+ .coredump = nxpwifi_sdio_coredump,
+ .pm = &nxpwifi_sdio_pm_ops,
+ }
+};
+
+/* This function wakes up the card.
+ *
+ * A host power up command is written to the card configuration
+ * register to wake up the card.
+ */
+static int nxpwifi_pm_wakeup_card(struct nxpwifi_adapter *adapter)
+{
+ nxpwifi_dbg(adapter, EVENT,
+ "event: wakeup device...\n");
+
+ return nxpwifi_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP);
+}
+
+/* This function is called after the card has woken up.
+ *
+ * The card configuration register is reset.
+ */
+static int nxpwifi_pm_wakeup_card_complete(struct nxpwifi_adapter *adapter)
+{
+ nxpwifi_dbg(adapter, EVENT,
+ "cmd: wakeup device completed\n");
+
+ return nxpwifi_write_reg(adapter, CONFIGURATION_REG, 0);
+}
+
+static int nxpwifi_sdio_dnld_fw(struct nxpwifi_adapter *adapter,
+ struct nxpwifi_fw_image *fw)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ int ret;
+
+ sdio_claim_host(card->func);
+ ret = nxpwifi_dnld_fw(adapter, fw);
+ sdio_release_host(card->func);
+
+ return ret;
+}
+
+/* This function is used to initialize IO ports for the
+ * chipsets supporting SDIO new mode.
+ */
+static int nxpwifi_init_sdio_new_mode(struct nxpwifi_adapter *adapter)
+{
+ u8 reg;
+ struct sdio_mmc_card *card = adapter->card;
+ int ret;
+
+ adapter->ioport = MEM_PORT;
+
+ /* enable sdio new mode */
+ ret = nxpwifi_read_reg(adapter, card->reg->card_cfg_2_1_reg, ®);
+ if (ret)
+ return ret;
+ ret = nxpwifi_write_reg(adapter, card->reg->card_cfg_2_1_reg,
+ reg | CMD53_NEW_MODE);
+ if (ret)
+ return ret;
+
+ /* Configure cmd port and enable reading rx length from the register */
+ ret = nxpwifi_read_reg(adapter, card->reg->cmd_cfg_0, ®);
+ if (ret)
+ return ret;
+ ret = nxpwifi_write_reg(adapter, card->reg->cmd_cfg_0,
+ reg | CMD_PORT_RD_LEN_EN);
+ if (ret)
+ return ret;
+
+ /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is
+ * completed
+ */
+ ret = nxpwifi_read_reg(adapter, card->reg->cmd_cfg_1, ®);
+ if (ret)
+ return ret;
+ ret = nxpwifi_write_reg(adapter, card->reg->cmd_cfg_1,
+ reg | CMD_PORT_AUTO_EN);
+
+ return ret;
+}
+
+/* This function initializes the IO ports.
+ *
+ * The following operations are performed -
+ * - Read the IO ports (0, 1 and 2)
+ * - Set host interrupt Reset-To-Read to clear
+ * - Set auto re-enable interrupt
+ */
+static int nxpwifi_init_sdio_ioport(struct nxpwifi_adapter *adapter)
+{
+ u8 reg;
+ struct sdio_mmc_card *card = adapter->card;
+ int ret;
+
+ ret = nxpwifi_init_sdio_new_mode(adapter);
+ if (ret)
+ return ret;
+
+ nxpwifi_dbg(adapter, INFO,
+ "info: SDIO FUNC1 IO port: %#x\n", adapter->ioport);
+
+ /* Set Host interrupt reset to read to clear */
+ ret = nxpwifi_read_reg(adapter, card->reg->host_int_rsr_reg, ®);
+ if (ret)
+ return ret;
+ ret = nxpwifi_write_reg(adapter, card->reg->host_int_rsr_reg,
+ reg | card->reg->sdio_int_mask);
+ if (ret)
+ return ret;
+
+ /* Dnld/Upld ready set to auto reset */
+ ret = nxpwifi_read_reg(adapter, card->reg->card_misc_cfg_reg, ®);
+ if (ret)
+ return ret;
+ ret = nxpwifi_write_reg(adapter, card->reg->card_misc_cfg_reg,
+ reg | AUTO_RE_ENABLE_INT);
+
+ return ret;
+}
+
+/* This function sends data to the card.
+ */
+static int nxpwifi_write_data_to_card(struct nxpwifi_adapter *adapter,
+ u8 *payload, u32 pkt_len, u32 port)
+{
+ u32 i = 0;
+ int ret;
+
+ do {
+ ret = nxpwifi_write_data_sync(adapter, payload, pkt_len, port);
+ if (ret) {
+ i++;
+ nxpwifi_dbg(adapter, ERROR,
+ "host_to_card, write iomem\t"
+ "(%d) failed: %d\n", i, ret);
+ if (nxpwifi_write_reg(adapter, CONFIGURATION_REG, 0x04))
+ nxpwifi_dbg(adapter, ERROR,
+ "write CFG reg failed\n");
+
+ if (i > MAX_WRITE_IOMEM_RETRY)
+ return ret;
+ }
+ } while (ret);
+
+ return ret;
+}
+
+/* This function gets the read port.
+ *
+ * If control port bit is set in MP read bitmap, the control port
+ * is returned, otherwise the current read port is returned and
+ * the value is increased (provided it does not reach the maximum
+ * limit, in which case it is reset to 1)
+ */
+static int nxpwifi_get_rd_port(struct nxpwifi_adapter *adapter, u8 *port)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ const struct nxpwifi_sdio_card_reg *reg = card->reg;
+ u32 rd_bitmap = card->mp_rd_bitmap;
+
+ nxpwifi_dbg(adapter, DATA,
+ "data: mp_rd_bitmap=0x%08x\n", rd_bitmap);
+
+ if (!(rd_bitmap & reg->data_port_mask))
+ return -EINVAL;
+
+ if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port)))
+ return -EINVAL;
+
+ /* We are now handling the SDIO data ports */
+ card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port));
+ *port = card->curr_rd_port;
+
+ if (++card->curr_rd_port == card->max_ports)
+ card->curr_rd_port = reg->start_rd_port;
+
+ nxpwifi_dbg(adapter, DATA,
+ "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n",
+ *port, rd_bitmap, card->mp_rd_bitmap);
+
+ return 0;
+}
+
+/* This function gets the write port for data.
+ *
+ * The current write port is returned if available and the value is
+ * increased (provided it does not reach the maximum limit, in which
+ * case it is reset to 1)
+ */
+static int nxpwifi_get_wr_port_data(struct nxpwifi_adapter *adapter, u32 *port)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ const struct nxpwifi_sdio_card_reg *reg = card->reg;
+ u32 wr_bitmap = card->mp_wr_bitmap;
+
+ nxpwifi_dbg(adapter, DATA,
+ "data: mp_wr_bitmap=0x%08x\n", wr_bitmap);
+
+ if (!(wr_bitmap & card->mp_data_port_mask)) {
+ adapter->data_sent = true;
+ return -EBUSY;
+ }
+
+ if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) {
+ card->mp_wr_bitmap &= (u32)(~(1 << card->curr_wr_port));
+ *port = card->curr_wr_port;
+ if (++card->curr_wr_port == card->mp_end_port)
+ card->curr_wr_port = reg->start_wr_port;
+ } else {
+ adapter->data_sent = true;
+ return -EBUSY;
+ }
+
+ nxpwifi_dbg(adapter, DATA,
+ "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
+ *port, wr_bitmap, card->mp_wr_bitmap);
+
+ return 0;
+}
+
+/* This function polls the card status.
+ */
+static int
+nxpwifi_sdio_poll_card_status(struct nxpwifi_adapter *adapter, u8 bits)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ u32 tries;
+ u8 cs;
+ int ret;
+
+ for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
+ ret = nxpwifi_read_reg(adapter, card->reg->poll_reg, &cs);
+ if (ret)
+ break;
+ else if ((cs & bits) == bits)
+ return 0;
+
+ usleep_range(10, 20);
+ }
+
+ nxpwifi_dbg(adapter, ERROR,
+ "poll card status failed, tries = %d\n", tries);
+
+ return ret;
+}
+
+/* This function disables the host interrupt.
+ *
+ * The host interrupt mask is read, the disable bit is reset and
+ * written back to the card host interrupt mask register.
+ */
+static void nxpwifi_sdio_disable_host_int(struct nxpwifi_adapter *adapter)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ struct sdio_func *func = card->func;
+
+ sdio_claim_host(func);
+ nxpwifi_write_reg_locked(func, card->reg->host_int_mask_reg, 0);
+ sdio_release_irq(func);
+ sdio_release_host(func);
+}
+
+/* This function reads the interrupt status from card.
+ */
+static void nxpwifi_interrupt_status(struct nxpwifi_adapter *adapter)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ u8 sdio_ireg;
+ unsigned long flags;
+
+ if (nxpwifi_read_data_sync(adapter, card->mp_regs,
+ card->reg->max_mp_regs,
+ REG_PORT | NXPWIFI_SDIO_BYTE_MODE_MASK, 0)) {
+ nxpwifi_dbg(adapter, ERROR, "read mp_regs failed\n");
+ return;
+ }
+
+ sdio_ireg = card->mp_regs[card->reg->host_int_status_reg];
+ if (sdio_ireg) {
+ nxpwifi_dbg(adapter, INTR,
+ "int: sdio_ireg = %#x\n", sdio_ireg);
+ spin_lock_irqsave(&adapter->int_lock, flags);
+ adapter->int_status |= sdio_ireg;
+ spin_unlock_irqrestore(&adapter->int_lock, flags);
+ }
+}
+
+/* SDIO interrupt handler.
+ *
+ * This function reads the interrupt status from firmware and handles
+ * the interrupt in current thread (ksdioirqd) right away.
+ */
+static void
+nxpwifi_sdio_interrupt(struct sdio_func *func)
+{
+ struct nxpwifi_adapter *adapter;
+ struct sdio_mmc_card *card;
+
+ card = sdio_get_drvdata(func);
+ if (!card || !card->adapter) {
+ pr_err("int: func=%p card=%p adapter=%p\n",
+ func, card, card ? card->adapter : NULL);
+ return;
+ }
+ adapter = card->adapter;
+
+ if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP)
+ adapter->ps_state = PS_STATE_AWAKE;
+
+ nxpwifi_interrupt_status(adapter);
+ nxpwifi_main_process(adapter);
+}
+
+/* This function enables the host interrupt.
+ *
+ * The host interrupt enable mask is written to the card
+ * host interrupt mask register.
+ */
+static int nxpwifi_sdio_enable_host_int(struct nxpwifi_adapter *adapter)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ struct sdio_func *func = card->func;
+ int ret;
+
+ sdio_claim_host(func);
+
+ /* Request the SDIO IRQ */
+ ret = sdio_claim_irq(func, nxpwifi_sdio_interrupt);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR,
+ "claim irq failed: ret=%d\n", ret);
+ goto done;
+ }
+
+ /* Simply write the mask to the register */
+ ret = nxpwifi_write_reg_locked(func, card->reg->host_int_mask_reg,
+ card->reg->host_int_enable);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR,
+ "enable host interrupt failed\n");
+ sdio_release_irq(func);
+ }
+
+done:
+ sdio_release_host(func);
+ return ret;
+}
+
+/* This function gets a data buffer from the card.
+ */
+static int nxpwifi_sdio_card_to_host(struct nxpwifi_adapter *adapter,
+ u32 *type, u8 *buffer,
+ u32 npayload, u32 ioport)
+{
+ int ret;
+ u32 nb;
+
+ if (!buffer) {
+ nxpwifi_dbg(adapter, ERROR,
+ "%s: buffer is NULL\n", __func__);
+ return -EINVAL;
+ }
+
+ ret = nxpwifi_read_data_sync(adapter, buffer, npayload, ioport, 1);
+
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR,
+ "%s: read iomem failed: %d\n", __func__,
+ ret);
+ return ret;
+ }
+
+ nb = get_unaligned_le16((buffer));
+ if (nb > npayload) {
+ nxpwifi_dbg(adapter, ERROR,
+ "%s: invalid packet, nb=%d npayload=%d\n",
+ __func__, nb, npayload);
+ return -EINVAL;
+ }
+
+ *type = get_unaligned_le16((buffer + 2));
+
+ return ret;
+}
+
+/* This function downloads the firmware to the card.
+ *
+ * Firmware is downloaded to the card in blocks. Every block download
+ * is tested for CRC errors, and retried a number of times before
+ * returning failure.
+ */
+static int nxpwifi_prog_fw_w_helper(struct nxpwifi_adapter *adapter,
+ struct nxpwifi_fw_image *fw)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ const struct nxpwifi_sdio_card_reg *reg = card->reg;
+ int ret;
+ u8 *firmware = fw->fw_buf;
+ u32 firmware_len = fw->fw_len;
+ u32 offset = 0;
+ u8 base0, base1;
+ u8 *fwbuf;
+ u16 len = 0;
+ u32 txlen, tx_blocks = 0, tries;
+ u32 i = 0;
+
+ if (!firmware_len) {
+ nxpwifi_dbg(adapter, ERROR,
+ "firmware image not found! Terminating download\n");
+ return -EINVAL;
+ }
+
+ nxpwifi_dbg(adapter, INFO,
+ "info: downloading FW image (%d bytes)\n",
+ firmware_len);
+
+ /* Assume that the allocated buffer is 8-byte aligned */
+ fwbuf = kzalloc(NXPWIFI_UPLD_SIZE, GFP_KERNEL);
+ if (!fwbuf)
+ return -ENOMEM;
+
+ sdio_claim_host(card->func);
+
+ /* Perform firmware data transfer */
+ do {
+ /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
+ * bits
+ */
+ ret = nxpwifi_sdio_poll_card_status(adapter, CARD_IO_READY |
+ DN_LD_CARD_RDY);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR,
+ "FW download with helper:\t"
+ "poll status timeout @ %d\n", offset);
+ goto done;
+ }
+
+ /* More data? */
+ if (offset >= firmware_len)
+ break;
+
+ for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
+ ret = nxpwifi_read_reg(adapter, reg->base_0_reg,
+ &base0);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR,
+ "dev BASE0 register read failed:\t"
+ "base0=%#04X(%d). Terminating dnld\n",
+ base0, base0);
+ goto done;
+ }
+ ret = nxpwifi_read_reg(adapter, reg->base_1_reg,
+ &base1);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR,
+ "dev BASE1 register read failed:\t"
+ "base1=%#04X(%d). Terminating dnld\n",
+ base1, base1);
+ goto done;
+ }
+ len = (u16)(((base1 & 0xff) << 8) | (base0 & 0xff));
+
+ if (len)
+ break;
+
+ usleep_range(10, 20);
+ }
+
+ if (!len) {
+ break;
+ } else if (len > NXPWIFI_UPLD_SIZE) {
+ nxpwifi_dbg(adapter, ERROR,
+ "FW dnld failed @ %d, invalid length %d\n",
+ offset, len);
+ ret = -EINVAL;
+ goto done;
+ }
+
+ txlen = len;
+
+ if (len & BIT(0)) {
+ i++;
+ if (i > MAX_WRITE_IOMEM_RETRY) {
+ nxpwifi_dbg(adapter, ERROR,
+ "FW dnld failed @ %d, over max retry\n",
+ offset);
+ ret = -EIO;
+ goto done;
+ }
+ nxpwifi_dbg(adapter, ERROR,
+ "CRC indicated by the helper:\t"
+ "len = 0x%04X, txlen = %d\n", len, txlen);
+ len &= ~BIT(0);
+ /* Setting this to 0 to resend from same offset */
+ txlen = 0;
+ } else {
+ i = 0;
+
+ /* Set blocksize to transfer - checking for last
+ * block
+ */
+ if (firmware_len - offset < txlen)
+ txlen = firmware_len - offset;
+
+ tx_blocks = (txlen + NXPWIFI_SDIO_BLOCK_SIZE - 1)
+ / NXPWIFI_SDIO_BLOCK_SIZE;
+
+ /* Copy payload to buffer */
+ memmove(fwbuf, &firmware[offset], txlen);
+ }
+
+ ret = nxpwifi_write_data_sync(adapter, fwbuf, tx_blocks *
+ NXPWIFI_SDIO_BLOCK_SIZE,
+ adapter->ioport);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR,
+ "FW download, write iomem (%d) failed @ %d\n",
+ i, offset);
+ if (nxpwifi_write_reg(adapter, CONFIGURATION_REG, 0x04))
+ nxpwifi_dbg(adapter, ERROR,
+ "write CFG reg failed\n");
+
+ goto done;
+ }
+
+ offset += txlen;
+ } while (true);
+
+ nxpwifi_dbg(adapter, MSG,
+ "info: FW download over, size %d bytes\n", offset);
+
+ ret = 0;
+done:
+ sdio_release_host(card->func);
+ kfree(fwbuf);
+ return ret;
+}
+
+/* This function decodes sdio aggregation pkt.
+ *
+ * Based on the data block size and pkt_len,
+ * skb data will be decoded to few packets.
+ */
+static void nxpwifi_deaggr_sdio_pkt(struct nxpwifi_adapter *adapter,
+ struct sk_buff *skb)
+{
+ u32 total_pkt_len, pkt_len;
+ struct sk_buff *skb_deaggr;
+ u16 blk_size;
+ u8 blk_num;
+ u8 *data;
+
+ data = skb->data;
+ total_pkt_len = skb->len;
+
+ while (total_pkt_len >= (SDIO_HEADER_OFFSET + adapter->intf_hdr_len)) {
+ if (total_pkt_len < adapter->sdio_rx_block_size)
+ break;
+ blk_num = *(data + BLOCK_NUMBER_OFFSET);
+ blk_size = adapter->sdio_rx_block_size * blk_num;
+ if (blk_size > total_pkt_len) {
+ nxpwifi_dbg(adapter, ERROR,
+ "%s: error in blk_size,\t"
+ "blk_num=%d, blk_size=%d, total_pkt_len=%d\n",
+ __func__, blk_num, blk_size, total_pkt_len);
+ break;
+ }
+ pkt_len = get_unaligned_le16((data +
+ SDIO_HEADER_OFFSET));
+ if ((pkt_len + SDIO_HEADER_OFFSET) > blk_size) {
+ nxpwifi_dbg(adapter, ERROR,
+ "%s: error in pkt_len,\t"
+ "pkt_len=%d, blk_size=%d\n",
+ __func__, pkt_len, blk_size);
+ break;
+ }
+
+ skb_deaggr = nxpwifi_alloc_dma_align_buf(pkt_len, GFP_KERNEL);
+ if (!skb_deaggr)
+ break;
+ skb_put(skb_deaggr, pkt_len);
+ memcpy(skb_deaggr->data, data + SDIO_HEADER_OFFSET, pkt_len);
+ skb_pull(skb_deaggr, adapter->intf_hdr_len);
+
+ nxpwifi_handle_rx_packet(adapter, skb_deaggr);
+ data += blk_size;
+ total_pkt_len -= blk_size;
+ }
+}
+
+/* This function decodes a received packet.
+ *
+ * Based on the type, the packet is treated as either a data, or
+ * a command response, or an event, and the correct handler
+ * function is invoked.
+ */
+static void nxpwifi_decode_rx_packet(struct nxpwifi_adapter *adapter,
+ struct sk_buff *skb, u32 upld_typ)
+{
+ u8 *cmd_buf;
+ u16 pkt_len;
+ struct nxpwifi_rxinfo *rx_info;
+
+ pkt_len = get_unaligned_le16(skb->data);
+
+ if (upld_typ != NXPWIFI_TYPE_AGGR_DATA) {
+ skb_trim(skb, pkt_len);
+ skb_pull(skb, adapter->intf_hdr_len);
+ }
+
+ switch (upld_typ) {
+ case NXPWIFI_TYPE_AGGR_DATA:
+ nxpwifi_dbg(adapter, INFO,
+ "info: --- Rx: Aggr Data packet ---\n");
+ rx_info = NXPWIFI_SKB_RXCB(skb);
+ rx_info->buf_type = NXPWIFI_TYPE_AGGR_DATA;
+ skb_queue_tail(&adapter->rx_data_q, skb);
+ adapter->data_received = true;
+ tasklet_schedule(&adapter->rx_task);
+ break;
+
+ case NXPWIFI_TYPE_DATA:
+ nxpwifi_dbg(adapter, DATA,
+ "info: --- Rx: Data packet ---\n");
+ skb_queue_tail(&adapter->rx_data_q, skb);
+ adapter->data_received = true;
+ tasklet_schedule(&adapter->rx_task);
+ break;
+
+ case NXPWIFI_TYPE_CMD:
+ nxpwifi_dbg(adapter, CMD,
+ "info: --- Rx: Cmd Response ---\n");
+ /* take care of curr_cmd = NULL case */
+ if (!adapter->curr_cmd) {
+ cmd_buf = adapter->upld_buf;
+
+ if (adapter->ps_state == PS_STATE_SLEEP_CFM)
+ nxpwifi_process_sleep_confirm_resp(adapter,
+ skb->data,
+ skb->len);
+
+ memcpy(cmd_buf, skb->data,
+ min_t(u32, NXPWIFI_SIZE_OF_CMD_BUFFER,
+ skb->len));
+
+ dev_kfree_skb_any(skb);
+ } else {
+ adapter->cmd_resp_received = true;
+ adapter->curr_cmd->resp_skb = skb;
+ }
+ break;
+
+ case NXPWIFI_TYPE_EVENT:
+ nxpwifi_dbg(adapter, EVENT,
+ "info: --- Rx: Event ---\n");
+ adapter->event_cause = get_unaligned_le32(skb->data);
+
+ if (skb->len > 0 && skb->len < MAX_EVENT_SIZE)
+ memcpy(adapter->event_body,
+ skb->data + NXPWIFI_EVENT_HEADER_LEN,
+ skb->len);
+
+ /* event cause has been saved to adapter->event_cause */
+ adapter->event_received = true;
+ adapter->event_skb = skb;
+
+ break;
+
+ default:
+ nxpwifi_dbg(adapter, ERROR,
+ "unknown upload type %#x\n", upld_typ);
+ dev_kfree_skb_any(skb);
+ break;
+ }
+}
+
+/* This function transfers received packets from card to driver, performing
+ * aggregation if required.
+ *
+ * For data received on control port, or if aggregation is disabled, the
+ * received buffers are uploaded as separate packets. However, if aggregation
+ * is enabled and required, the buffers are copied onto an aggregation buffer,
+ * provided there is space left, processed and finally uploaded.
+ */
+static int nxpwifi_sdio_card_to_host_mp_aggr(struct nxpwifi_adapter *adapter,
+ u16 rx_len, u8 port)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ s32 f_do_rx_aggr = 0;
+ s32 f_do_rx_cur = 0;
+ s32 f_aggr_cur = 0;
+ s32 f_post_aggr_cur = 0;
+ struct sk_buff *skb_deaggr;
+ struct sk_buff *skb = NULL;
+ u32 pkt_len, pkt_type, mport, pind;
+ u8 *curr_ptr;
+ int ret = 0;
+
+ if (!card->mpa_rx.enabled) {
+ nxpwifi_dbg(adapter, WARN,
+ "info: %s: rx aggregation disabled\n",
+ __func__);
+
+ f_do_rx_cur = 1;
+ goto rx_curr_single;
+ }
+
+ if (card->mp_rd_bitmap & card->reg->data_port_mask) {
+ /* Some more data RX pending */
+ nxpwifi_dbg(adapter, INFO,
+ "info: %s: not last packet\n", __func__);
+
+ if (MP_RX_AGGR_IN_PROGRESS(card)) {
+ if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) {
+ f_aggr_cur = 1;
+ } else {
+ /* No room in Aggr buf, do rx aggr now */
+ f_do_rx_aggr = 1;
+ f_post_aggr_cur = 1;
+ }
+ } else {
+ /* Rx aggr not in progress */
+ f_aggr_cur = 1;
+ }
+
+ } else {
+ /* No more data RX pending */
+ nxpwifi_dbg(adapter, INFO,
+ "info: %s: last packet\n", __func__);
+
+ if (MP_RX_AGGR_IN_PROGRESS(card)) {
+ f_do_rx_aggr = 1;
+ if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len))
+ f_aggr_cur = 1;
+ else
+ /* No room in Aggr buf, do rx aggr now */
+ f_do_rx_cur = 1;
+ } else {
+ f_do_rx_cur = 1;
+ }
+ }
+
+ if (f_aggr_cur) {
+ nxpwifi_dbg(adapter, INFO,
+ "info: current packet aggregation\n");
+ /* Curr pkt can be aggregated */
+ mp_rx_aggr_setup(card, rx_len, port);
+
+ if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) ||
+ mp_rx_aggr_port_limit_reached(card)) {
+ nxpwifi_dbg(adapter, INFO,
+ "info: %s: aggregated packet\t"
+ "limit reached\n", __func__);
+ /* No more pkts allowed in Aggr buf, rx it */
+ f_do_rx_aggr = 1;
+ }
+ }
+
+ if (f_do_rx_aggr) {
+ u32 port_count;
+ int i;
+
+ /* do aggr RX now */
+ nxpwifi_dbg(adapter, DATA,
+ "info: do_rx_aggr: num of packets: %d\n",
+ card->mpa_rx.pkt_cnt);
+
+ for (i = 0, port_count = 0; i < card->max_ports; i++)
+ if (card->mpa_rx.ports & BIT(i))
+ port_count++;
+
+ /* Reading data from "start_port + 0" to "start_port +
+ * port_count -1", so decrease the count by 1
+ */
+ port_count--;
+ mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
+ (port_count << 8)) + card->mpa_rx.start_port;
+
+ if (card->mpa_rx.pkt_cnt == 1)
+ mport = adapter->ioport + card->mpa_rx.start_port;
+
+ ret = nxpwifi_read_data_sync(adapter, card->mpa_rx.buf,
+ card->mpa_rx.buf_len, mport, 1);
+ if (ret)
+ goto error;
+
+ curr_ptr = card->mpa_rx.buf;
+
+ for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
+ u32 *len_arr = card->mpa_rx.len_arr;
+
+ /* get curr PKT len & type */
+ pkt_len = get_unaligned_le16(&curr_ptr[0]);
+ pkt_type = get_unaligned_le16(&curr_ptr[2]);
+
+ /* copy pkt to deaggr buf */
+ skb_deaggr = nxpwifi_alloc_dma_align_buf(len_arr[pind],
+ GFP_KERNEL);
+ if (!skb_deaggr) {
+ nxpwifi_dbg(adapter, ERROR, "skb allocation failure\t"
+ "drop pkt len=%d type=%d\n",
+ pkt_len, pkt_type);
+ curr_ptr += len_arr[pind];
+ continue;
+ }
+
+ skb_put(skb_deaggr, len_arr[pind]);
+
+ if ((pkt_type == NXPWIFI_TYPE_DATA ||
+ (pkt_type == NXPWIFI_TYPE_AGGR_DATA &&
+ adapter->sdio_rx_aggr_enable)) &&
+ pkt_len <= len_arr[pind]) {
+ memcpy(skb_deaggr->data, curr_ptr, pkt_len);
+
+ skb_trim(skb_deaggr, pkt_len);
+
+ /* Process de-aggr packet */
+ nxpwifi_decode_rx_packet(adapter, skb_deaggr,
+ pkt_type);
+ } else {
+ nxpwifi_dbg(adapter, ERROR,
+ "drop wrong aggr pkt:\t"
+ "sdio_single_port_rx_aggr=%d\t"
+ "type=%d len=%d max_len=%d\n",
+ adapter->sdio_rx_aggr_enable,
+ pkt_type, pkt_len, len_arr[pind]);
+ dev_kfree_skb_any(skb_deaggr);
+ }
+ curr_ptr += len_arr[pind];
+ }
+ MP_RX_AGGR_BUF_RESET(card);
+ }
+
+rx_curr_single:
+ if (f_do_rx_cur) {
+ nxpwifi_dbg(adapter, INFO, "info: RX: port: %d, rx_len: %d\n",
+ port, rx_len);
+
+ skb = nxpwifi_alloc_dma_align_buf(rx_len, GFP_KERNEL);
+ if (!skb) {
+ nxpwifi_dbg(adapter, ERROR,
+ "single skb allocated fail,\t"
+ "drop pkt port=%d len=%d\n", port, rx_len);
+ ret = nxpwifi_sdio_card_to_host(adapter, &pkt_type,
+ card->mpa_rx.buf,
+ rx_len,
+ adapter->ioport + port);
+ if (ret)
+ goto error;
+ return 0;
+ }
+
+ skb_put(skb, rx_len);
+
+ ret = nxpwifi_sdio_card_to_host(adapter, &pkt_type,
+ skb->data, skb->len,
+ adapter->ioport + port);
+ if (ret)
+ goto error;
+ if (!adapter->sdio_rx_aggr_enable &&
+ pkt_type == NXPWIFI_TYPE_AGGR_DATA) {
+ nxpwifi_dbg(adapter, ERROR, "drop wrong pkt type %d\t"
+ "current SDIO RX Aggr not enabled\n",
+ pkt_type);
+ dev_kfree_skb_any(skb);
+ return 0;
+ }
+
+ nxpwifi_decode_rx_packet(adapter, skb, pkt_type);
+ }
+ if (f_post_aggr_cur) {
+ nxpwifi_dbg(adapter, INFO,
+ "info: current packet aggregation\n");
+ /* Curr pkt can be aggregated */
+ mp_rx_aggr_setup(card, rx_len, port);
+ }
+
+ return 0;
+error:
+ if (MP_RX_AGGR_IN_PROGRESS(card))
+ MP_RX_AGGR_BUF_RESET(card);
+
+ if (f_do_rx_cur && skb)
+ /* Single transfer pending. Free curr buff also */
+ dev_kfree_skb_any(skb);
+
+ return ret;
+}
+
+/* This function checks the current interrupt status.
+ *
+ * The following interrupts are checked and handled by this function -
+ * - Data sent
+ * - Command sent
+ * - Packets received
+ *
+ * Since the firmware does not generate download ready interrupt if the
+ * port updated is command port only, command sent interrupt checking
+ * should be done manually, and for every SDIO interrupt.
+ *
+ * In case of Rx packets received, the packets are uploaded from card to
+ * host and processed accordingly.
+ */
+static int nxpwifi_process_int_status(struct nxpwifi_adapter *adapter)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ const struct nxpwifi_sdio_card_reg *reg = card->reg;
+ int ret = 0;
+ u8 sdio_ireg;
+ struct sk_buff *skb;
+ u8 port;
+ u32 len_reg_l, len_reg_u;
+ u32 rx_blocks;
+ u16 rx_len;
+ unsigned long flags;
+ u32 bitmap;
+ u8 cr;
+
+ spin_lock_irqsave(&adapter->int_lock, flags);
+ sdio_ireg = adapter->int_status;
+ adapter->int_status = 0;
+ spin_unlock_irqrestore(&adapter->int_lock, flags);
+
+ if (!sdio_ireg)
+ return ret;
+
+ if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent)
+ adapter->cmd_sent = false;
+
+ if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) {
+ u32 pkt_type;
+
+ /* read the len of control packet */
+ rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8;
+ rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0];
+ rx_blocks = DIV_ROUND_UP(rx_len, NXPWIFI_SDIO_BLOCK_SIZE);
+ if (rx_len <= adapter->intf_hdr_len ||
+ (rx_blocks * NXPWIFI_SDIO_BLOCK_SIZE) >
+ NXPWIFI_RX_DATA_BUF_SIZE)
+ return -EINVAL;
+ rx_len = (u16)(rx_blocks * NXPWIFI_SDIO_BLOCK_SIZE);
+ nxpwifi_dbg(adapter, INFO, "info: rx_len = %d\n", rx_len);
+
+ skb = nxpwifi_alloc_dma_align_buf(rx_len, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+ skb_put(skb, rx_len);
+
+ ret = nxpwifi_sdio_card_to_host(adapter, &pkt_type, skb->data,
+ skb->len, adapter->ioport |
+ CMD_PORT_SLCT);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR,
+ "%s: failed to card_to_host", __func__);
+ dev_kfree_skb_any(skb);
+ goto term_cmd;
+ }
+
+ if (pkt_type != NXPWIFI_TYPE_CMD &&
+ pkt_type != NXPWIFI_TYPE_EVENT)
+ nxpwifi_dbg(adapter, ERROR,
+ "%s:Received wrong packet on cmd port",
+ __func__);
+
+ nxpwifi_decode_rx_packet(adapter, skb, pkt_type);
+ }
+
+ if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
+ bitmap = (u32)card->mp_regs[reg->wr_bitmap_l];
+ bitmap |= ((u32)card->mp_regs[reg->wr_bitmap_u]) << 8;
+ bitmap |= ((u32)card->mp_regs[reg->wr_bitmap_1l]) << 16;
+ bitmap |= ((u32)card->mp_regs[reg->wr_bitmap_1u]) << 24;
+ card->mp_wr_bitmap = bitmap;
+
+ nxpwifi_dbg(adapter, INTR,
+ "int: DNLD: wr_bitmap=0x%x\n",
+ card->mp_wr_bitmap);
+ if (adapter->data_sent &&
+ (card->mp_wr_bitmap & card->mp_data_port_mask)) {
+ nxpwifi_dbg(adapter, INTR,
+ "info: <--- Tx DONE Interrupt --->\n");
+ adapter->data_sent = false;
+ }
+ }
+
+ nxpwifi_dbg(adapter, INTR, "info: cmd_sent=%d data_sent=%d\n",
+ adapter->cmd_sent, adapter->data_sent);
+ if (sdio_ireg & UP_LD_HOST_INT_STATUS) {
+ bitmap = (u32)card->mp_regs[reg->rd_bitmap_l];
+ bitmap |= ((u32)card->mp_regs[reg->rd_bitmap_u]) << 8;
+ bitmap |= ((u32)card->mp_regs[reg->rd_bitmap_1l]) << 16;
+ bitmap |= ((u32)card->mp_regs[reg->rd_bitmap_1u]) << 24;
+ card->mp_rd_bitmap = bitmap;
+ nxpwifi_dbg(adapter, INTR,
+ "int: UPLD: rd_bitmap=0x%x\n",
+ card->mp_rd_bitmap);
+
+ while (true) {
+ ret = nxpwifi_get_rd_port(adapter, &port);
+ if (ret) {
+ nxpwifi_dbg(adapter, INFO,
+ "info: no more rd_port available\n");
+ break;
+ }
+ len_reg_l = reg->rd_len_p0_l + (port << 1);
+ len_reg_u = reg->rd_len_p0_u + (port << 1);
+ rx_len = ((u16)card->mp_regs[len_reg_u]) << 8;
+ rx_len |= (u16)card->mp_regs[len_reg_l];
+ nxpwifi_dbg(adapter, INFO,
+ "info: RX: port=%d rx_len=%u\n",
+ port, rx_len);
+ rx_blocks =
+ (rx_len + NXPWIFI_SDIO_BLOCK_SIZE -
+ 1) / NXPWIFI_SDIO_BLOCK_SIZE;
+ if (rx_len <= adapter->intf_hdr_len ||
+ (card->mpa_rx.enabled &&
+ ((rx_blocks * NXPWIFI_SDIO_BLOCK_SIZE) >
+ card->mpa_rx.buf_size))) {
+ nxpwifi_dbg(adapter, ERROR,
+ "invalid rx_len=%d\n",
+ rx_len);
+ return -EINVAL;
+ }
+
+ rx_len = (u16)(rx_blocks * NXPWIFI_SDIO_BLOCK_SIZE);
+ nxpwifi_dbg(adapter, INFO, "info: rx_len = %d\n",
+ rx_len);
+
+ ret = nxpwifi_sdio_card_to_host_mp_aggr(adapter, rx_len,
+ port);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR,
+ "card_to_host_mpa failed: int status=%#x\n",
+ sdio_ireg);
+ goto term_cmd;
+ }
+ }
+ }
+
+ return 0;
+
+term_cmd:
+ /* terminate cmd */
+ if (nxpwifi_read_reg(adapter, CONFIGURATION_REG, &cr))
+ nxpwifi_dbg(adapter, ERROR, "read CFG reg failed\n");
+ else
+ nxpwifi_dbg(adapter, INFO,
+ "info: CFG reg val = %d\n", cr);
+
+ if (nxpwifi_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04)))
+ nxpwifi_dbg(adapter, ERROR,
+ "write CFG reg failed\n");
+ else
+ nxpwifi_dbg(adapter, INFO, "info: write success\n");
+
+ if (nxpwifi_read_reg(adapter, CONFIGURATION_REG, &cr))
+ nxpwifi_dbg(adapter, ERROR,
+ "read CFG reg failed\n");
+ else
+ nxpwifi_dbg(adapter, INFO,
+ "info: CFG reg val =%x\n", cr);
+
+ return ret;
+}
+
+/* This function aggregates transmission buffers in driver and downloads
+ * the aggregated packet to card.
+ *
+ * The individual packets are aggregated by copying into an aggregation
+ * buffer and then downloaded to the card. Previous unsent packets in the
+ * aggregation buffer are pre-copied first before new packets are added.
+ * Aggregation is done till there is space left in the aggregation buffer,
+ * or till new packets are available.
+ *
+ * The function will only download the packet to the card when aggregation
+ * stops, otherwise it will just aggregate the packet in aggregation buffer
+ * and return.
+ */
+static int nxpwifi_host_to_card_mp_aggr(struct nxpwifi_adapter *adapter,
+ u8 *payload, u32 pkt_len, u32 port,
+ u32 next_pkt_len)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ int ret = 0;
+ s32 f_send_aggr_buf = 0;
+ s32 f_send_cur_buf = 0;
+ s32 f_precopy_cur_buf = 0;
+ s32 f_postcopy_cur_buf = 0;
+ u32 mport;
+ int index;
+
+ if (!card->mpa_tx.enabled || port == CMD_PORT_SLCT) {
+ nxpwifi_dbg(adapter, WARN,
+ "info: %s: tx aggregation disabled\n",
+ __func__);
+
+ f_send_cur_buf = 1;
+ goto tx_curr_single;
+ }
+
+ if (next_pkt_len) {
+ /* More pkt in TX queue */
+ nxpwifi_dbg(adapter, INFO,
+ "info: %s: more packets in queue.\n",
+ __func__);
+
+ if (MP_TX_AGGR_IN_PROGRESS(card)) {
+ if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
+ f_precopy_cur_buf = 1;
+
+ if (!(card->mp_wr_bitmap &
+ (1 << card->curr_wr_port)) ||
+ !MP_TX_AGGR_BUF_HAS_ROOM
+ (card, pkt_len + next_pkt_len))
+ f_send_aggr_buf = 1;
+ } else {
+ /* No room in Aggr buf, send it */
+ f_send_aggr_buf = 1;
+
+ if (!(card->mp_wr_bitmap &
+ (1 << card->curr_wr_port)))
+ f_send_cur_buf = 1;
+ else
+ f_postcopy_cur_buf = 1;
+ }
+ } else {
+ if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) &&
+ (card->mp_wr_bitmap & (1 << card->curr_wr_port)))
+ f_precopy_cur_buf = 1;
+ else
+ f_send_cur_buf = 1;
+ }
+ } else {
+ /* Last pkt in TX queue */
+ nxpwifi_dbg(adapter, INFO,
+ "info: %s: Last packet in Tx Queue.\n",
+ __func__);
+
+ if (MP_TX_AGGR_IN_PROGRESS(card)) {
+ /* some packs in Aggr buf already */
+ f_send_aggr_buf = 1;
+
+ if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len))
+ f_precopy_cur_buf = 1;
+ else
+ /* No room in Aggr buf, send it */
+ f_send_cur_buf = 1;
+ } else {
+ f_send_cur_buf = 1;
+ }
+ }
+
+ if (f_precopy_cur_buf) {
+ nxpwifi_dbg(adapter, DATA,
+ "data: %s: precopy current buffer\n",
+ __func__);
+ MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
+
+ if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) ||
+ mp_tx_aggr_port_limit_reached(card))
+ /* No more pkts allowed in Aggr buf, send it */
+ f_send_aggr_buf = 1;
+ }
+
+ if (f_send_aggr_buf) {
+ u32 port_count;
+ int i;
+
+ nxpwifi_dbg(adapter, DATA,
+ "data: %s: send aggr buffer: %d %d\n",
+ __func__, card->mpa_tx.start_port,
+ card->mpa_tx.ports);
+
+ for (i = 0, port_count = 0; i < card->max_ports; i++)
+ if (card->mpa_tx.ports & BIT(i))
+ port_count++;
+
+ /* Writing data from "start_port + 0" to "start_port +
+ * port_count -1", so decrease the count by 1
+ */
+ port_count--;
+ mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
+ (port_count << 8)) + card->mpa_tx.start_port;
+
+ if (card->mpa_tx.pkt_cnt == 1)
+ mport = adapter->ioport + card->mpa_tx.start_port;
+
+ ret = nxpwifi_write_data_to_card(adapter, card->mpa_tx.buf,
+ card->mpa_tx.buf_len, mport);
+
+ /* Save the last multi port tx aggregation info to debug log */
+ index = adapter->dbg.last_sdio_mp_index;
+ index = (index + 1) % NXPWIFI_DBG_SDIO_MP_NUM;
+ adapter->dbg.last_sdio_mp_index = index;
+ adapter->dbg.last_mp_wr_ports[index] = mport;
+ adapter->dbg.last_mp_wr_bitmap[index] = card->mp_wr_bitmap;
+ adapter->dbg.last_mp_wr_len[index] = card->mpa_tx.buf_len;
+ adapter->dbg.last_mp_curr_wr_port[index] = card->curr_wr_port;
+
+ MP_TX_AGGR_BUF_RESET(card);
+ }
+
+tx_curr_single:
+ if (f_send_cur_buf) {
+ nxpwifi_dbg(adapter, DATA,
+ "data: %s: send current buffer %d\n",
+ __func__, port);
+ ret = nxpwifi_write_data_to_card(adapter, payload, pkt_len,
+ adapter->ioport + port);
+ }
+
+ if (f_postcopy_cur_buf) {
+ nxpwifi_dbg(adapter, DATA,
+ "data: %s: postcopy current buffer\n",
+ __func__);
+ MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
+ }
+
+ return ret;
+}
+
+/* This function downloads data from driver to card.
+ *
+ * Both commands and data packets are transferred to the card by this
+ * function.
+ *
+ * This function adds the SDIO specific header to the front of the buffer
+ * before transferring. The header contains the length of the packet and
+ * the type. The firmware handles the packets based upon this set type.
+ */
+static int nxpwifi_sdio_host_to_card(struct nxpwifi_adapter *adapter,
+ u8 type, struct sk_buff *skb,
+ struct nxpwifi_tx_param *tx_param)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ int ret;
+ u32 buf_block_len;
+ u32 blk_size;
+ u32 port;
+ u8 *payload = (u8 *)skb->data;
+ u32 pkt_len = skb->len;
+
+ /* Allocate buffer and copy payload */
+ blk_size = NXPWIFI_SDIO_BLOCK_SIZE;
+ buf_block_len = (pkt_len + blk_size - 1) / blk_size;
+ put_unaligned_le16((u16)pkt_len, payload + 0);
+ put_unaligned_le16((u16)type, payload + 2);
+
+ /* This is SDIO specific header
+ * u16 length,
+ * u16 type (NXPWIFI_TYPE_DATA = 0, NXPWIFI_TYPE_CMD = 1,
+ * NXPWIFI_TYPE_EVENT = 3)
+ */
+ if (type == NXPWIFI_TYPE_DATA) {
+ ret = nxpwifi_get_wr_port_data(adapter, &port);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR,
+ "%s: no wr_port available\n",
+ __func__);
+ return ret;
+ }
+ } else {
+ adapter->cmd_sent = true;
+
+ if (pkt_len <= adapter->intf_hdr_len ||
+ pkt_len > NXPWIFI_UPLD_SIZE)
+ nxpwifi_dbg(adapter, ERROR,
+ "%s: payload=%p, nb=%d\n",
+ __func__, payload, pkt_len);
+
+ port = CMD_PORT_SLCT;
+ }
+
+ /* Transfer data to card */
+ pkt_len = buf_block_len * blk_size;
+
+ if (tx_param)
+ ret = nxpwifi_host_to_card_mp_aggr(adapter, payload, pkt_len,
+ port, tx_param->next_pkt_len
+ );
+ else
+ ret = nxpwifi_host_to_card_mp_aggr(adapter, payload, pkt_len,
+ port, 0);
+
+ if (ret) {
+ if (type == NXPWIFI_TYPE_CMD ||
+ type == NXPWIFI_TYPE_VDLL)
+ adapter->cmd_sent = false;
+ if (type == NXPWIFI_TYPE_DATA) {
+ adapter->data_sent = false;
+ /* restore curr_wr_port in error cases */
+ card->curr_wr_port = port;
+ card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port);
+ }
+ } else {
+ if (type == NXPWIFI_TYPE_DATA) {
+ if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port)))
+ adapter->data_sent = true;
+ else
+ adapter->data_sent = false;
+ }
+ }
+
+ return ret;
+}
+
+/* This function allocates the MPA Tx and Rx buffers.
+ */
+static int nxpwifi_alloc_sdio_mpa_buffers(struct nxpwifi_adapter *adapter,
+ u32 mpa_tx_buf_size,
+ u32 mpa_rx_buf_size)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ u32 rx_buf_size;
+ int ret = 0;
+
+ card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL);
+ if (!card->mpa_tx.buf) {
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ card->mpa_tx.buf_size = mpa_tx_buf_size;
+
+ rx_buf_size = max_t(u32, mpa_rx_buf_size,
+ (u32)SDIO_MAX_AGGR_BUF_SIZE);
+ card->mpa_rx.buf = kzalloc(rx_buf_size, GFP_KERNEL);
+ if (!card->mpa_rx.buf) {
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ card->mpa_rx.buf_size = rx_buf_size;
+
+error:
+ if (ret) {
+ kfree(card->mpa_tx.buf);
+ kfree(card->mpa_rx.buf);
+ card->mpa_tx.buf_size = 0;
+ card->mpa_rx.buf_size = 0;
+ card->mpa_tx.buf = NULL;
+ card->mpa_rx.buf = NULL;
+ }
+
+ return ret;
+}
+
+/* This function unregisters the SDIO device.
+ *
+ * The function is disabled and driver
+ * data is set to null.
+ */
+static void
+nxpwifi_unregister_dev(struct nxpwifi_adapter *adapter)
+{
+ struct sdio_mmc_card *card = adapter->card;
+
+ if (adapter->card) {
+ card->adapter = NULL;
+ sdio_claim_host(card->func);
+ sdio_disable_func(card->func);
+ sdio_release_host(card->func);
+ }
+}
+
+/* This function registers the SDIO device.
+ *
+ * SDIO IRQ is claimed, block size is set and driver data is initialized.
+ */
+static int nxpwifi_register_dev(struct nxpwifi_adapter *adapter)
+{
+ int ret;
+ struct sdio_mmc_card *card = adapter->card;
+ struct sdio_func *func = card->func;
+ const char *firmware = card->firmware;
+
+ /* save adapter pointer in card */
+ card->adapter = adapter;
+ adapter->tx_buf_size = card->tx_buf_size;
+
+ sdio_claim_host(func);
+
+ /* Set block size */
+ ret = sdio_set_block_size(card->func, NXPWIFI_SDIO_BLOCK_SIZE);
+ sdio_release_host(func);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR,
+ "cannot set SDIO block size\n");
+ return ret;
+ }
+
+ /* Select correct firmware (sdsd or sdiouart) firmware based on the strapping
+ * option
+ */
+ if (card->firmware_sdiouart) {
+ u8 val;
+
+ nxpwifi_read_reg(adapter, card->reg->host_strap_reg, &val);
+ if ((val & card->reg->host_strap_mask) == card->reg->host_strap_value)
+ firmware = card->firmware_sdiouart;
+ }
+ strscpy(adapter->fw_name, firmware, sizeof(adapter->fw_name));
+
+ if (card->fw_dump_enh) {
+ adapter->mem_type_mapping_tbl = generic_mem_type_map;
+ adapter->num_mem_types = 1;
+ } else {
+ adapter->mem_type_mapping_tbl = mem_type_mapping_tbl;
+ adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl);
+ }
+
+ return 0;
+}
+
+/* This function initializes the SDIO driver.
+ *
+ * The following initializations steps are followed -
+ * - Read the Host interrupt status register to acknowledge
+ * the first interrupt got from bootloader
+ * - Disable host interrupt mask register
+ * - Get SDIO port
+ * - Initialize SDIO variables in card
+ * - Allocate MP registers
+ * - Allocate MPA Tx and Rx buffers
+ */
+static int nxpwifi_init_sdio(struct nxpwifi_adapter *adapter)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ const struct nxpwifi_sdio_card_reg *reg = card->reg;
+ int ret;
+ u8 sdio_ireg;
+
+ sdio_set_drvdata(card->func, card);
+
+ /* Read the host_int_status_reg for ACK the first interrupt got
+ * from the bootloader. If we don't do this we get a interrupt
+ * as soon as we register the irq.
+ */
+ nxpwifi_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
+
+ /* Get SDIO ioport */
+ if (nxpwifi_init_sdio_ioport(adapter))
+ return -EIO;
+
+ /* Initialize SDIO variables in card */
+ card->mp_rd_bitmap = 0;
+ card->mp_wr_bitmap = 0;
+ card->curr_rd_port = reg->start_rd_port;
+ card->curr_wr_port = reg->start_wr_port;
+
+ card->mp_data_port_mask = reg->data_port_mask;
+
+ card->mpa_tx.buf_len = 0;
+ card->mpa_tx.pkt_cnt = 0;
+ card->mpa_tx.start_port = 0;
+
+ card->mpa_tx.enabled = 1;
+ card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit;
+
+ card->mpa_rx.buf_len = 0;
+ card->mpa_rx.pkt_cnt = 0;
+ card->mpa_rx.start_port = 0;
+
+ card->mpa_rx.enabled = 1;
+ card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit;
+
+ /* Allocate buffers for SDIO MP-A */
+ card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL);
+ if (!card->mp_regs)
+ return -ENOMEM;
+
+ card->mpa_rx.len_arr = kcalloc(card->mp_agg_pkt_limit,
+ sizeof(*card->mpa_rx.len_arr),
+ GFP_KERNEL);
+ if (!card->mpa_rx.len_arr) {
+ kfree(card->mp_regs);
+ return -ENOMEM;
+ }
+
+ ret = nxpwifi_alloc_sdio_mpa_buffers(adapter,
+ card->mp_tx_agg_buf_size,
+ card->mp_rx_agg_buf_size);
+
+ /* Allocate 32k MPA Tx/Rx buffers if 64k memory allocation fails */
+ if (ret && (card->mp_tx_agg_buf_size == NXPWIFI_MP_AGGR_BSIZE_MAX ||
+ card->mp_rx_agg_buf_size == NXPWIFI_MP_AGGR_BSIZE_MAX)) {
+ /* Disable rx single port aggregation */
+ adapter->host_disable_sdio_rx_aggr = true;
+
+ ret = nxpwifi_alloc_sdio_mpa_buffers(adapter,
+ NXPWIFI_MP_AGGR_BSIZE_32K,
+ NXPWIFI_MP_AGGR_BSIZE_32K);
+ if (ret) {
+ /* Disable multi port aggregation */
+ card->mpa_tx.enabled = 0;
+ card->mpa_rx.enabled = 0;
+ }
+ }
+
+ adapter->ext_scan = card->can_ext_scan;
+ return ret;
+}
+
+/* This function resets the MPA Tx and Rx buffers.
+ */
+static void nxpwifi_cleanup_mpa_buf(struct nxpwifi_adapter *adapter)
+{
+ struct sdio_mmc_card *card = adapter->card;
+
+ MP_TX_AGGR_BUF_RESET(card);
+ MP_RX_AGGR_BUF_RESET(card);
+}
+
+/* This function cleans up the allocated card buffers.
+ *
+ * The following are freed by this function -
+ * - MP registers
+ * - MPA Tx buffer
+ * - MPA Rx buffer
+ */
+static void nxpwifi_cleanup_sdio(struct nxpwifi_adapter *adapter)
+{
+ struct sdio_mmc_card *card = adapter->card;
+
+ cancel_work_sync(&card->work);
+
+ kfree(card->mp_regs);
+ kfree(card->mpa_rx.len_arr);
+ kfree(card->mpa_tx.buf);
+ kfree(card->mpa_rx.buf);
+}
+
+/* This function updates the MP end port in card.
+ */
+static void
+nxpwifi_update_mp_end_port(struct nxpwifi_adapter *adapter, u16 port)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ const struct nxpwifi_sdio_card_reg *reg = card->reg;
+ int i;
+
+ card->mp_end_port = port;
+
+ card->mp_data_port_mask = reg->data_port_mask;
+
+ if (reg->start_wr_port) {
+ for (i = 1; i <= card->max_ports - card->mp_end_port; i++)
+ card->mp_data_port_mask &=
+ ~(1 << (card->max_ports - i));
+ }
+
+ card->curr_wr_port = reg->start_wr_port;
+
+ nxpwifi_dbg(adapter, CMD,
+ "cmd: mp_end_port %d, data port mask 0x%x\n",
+ port, card->mp_data_port_mask);
+}
+
+static void nxpwifi_sdio_card_reset_work(struct nxpwifi_adapter *adapter)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ struct sdio_func *func = card->func;
+ int ret;
+
+ /* Prepare the adapter for the reset. */
+ nxpwifi_shutdown_sw(adapter);
+ clear_bit(NXPWIFI_IFACE_WORK_DEVICE_DUMP, &card->work_flags);
+ clear_bit(NXPWIFI_IFACE_WORK_CARD_RESET, &card->work_flags);
+
+ /* Run a HW reset of the SDIO interface. */
+ sdio_claim_host(func);
+ ret = mmc_hw_reset(func->card);
+ sdio_release_host(func);
+
+ switch (ret) {
+ case 1:
+ dev_dbg(&func->dev, "SDIO HW reset asynchronous\n");
+ complete_all(adapter->fw_done);
+ break;
+ case 0:
+ ret = nxpwifi_reinit_sw(adapter);
+ if (ret)
+ dev_err(&func->dev, "reinit failed: %d\n", ret);
+ break;
+ default:
+ dev_err(&func->dev, "SDIO HW reset failed: %d\n", ret);
+ break;
+ }
+}
+
+/* This function read/write firmware */
+static enum
+rdwr_status nxpwifi_sdio_rdwr_firmware(struct nxpwifi_adapter *adapter,
+ u8 doneflag)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ int ret, tries;
+ u8 ctrl_data = 0;
+
+ sdio_writeb(card->func, card->reg->fw_dump_host_ready,
+ card->reg->fw_dump_ctrl, &ret);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR, "SDIO Write ERR\n");
+ return RDWR_STATUS_FAILURE;
+ }
+ for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
+ ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
+ &ret);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR, "SDIO read err\n");
+ return RDWR_STATUS_FAILURE;
+ }
+ if (ctrl_data == FW_DUMP_DONE)
+ break;
+ if (doneflag && ctrl_data == doneflag)
+ return RDWR_STATUS_DONE;
+ if (ctrl_data != card->reg->fw_dump_host_ready) {
+ nxpwifi_dbg(adapter, WARN,
+ "The ctrl reg was changed, re-try again\n");
+ sdio_writeb(card->func, card->reg->fw_dump_host_ready,
+ card->reg->fw_dump_ctrl, &ret);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR, "SDIO write err\n");
+ return RDWR_STATUS_FAILURE;
+ }
+ }
+ usleep_range(100, 200);
+ }
+ if (ctrl_data == card->reg->fw_dump_host_ready) {
+ nxpwifi_dbg(adapter, ERROR,
+ "Fail to pull ctrl_data\n");
+ return RDWR_STATUS_FAILURE;
+ }
+
+ return RDWR_STATUS_SUCCESS;
+}
+
+/* This function dump firmware memory to file */
+static void nxpwifi_sdio_fw_dump(struct nxpwifi_adapter *adapter)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ int ret = 0;
+ unsigned int reg, reg_start, reg_end;
+ u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0;
+ enum rdwr_status stat;
+ u32 memory_size;
+
+ if (!card->can_dump_fw)
+ return;
+
+ for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
+ struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
+
+ if (entry->mem_ptr) {
+ vfree(entry->mem_ptr);
+ entry->mem_ptr = NULL;
+ }
+ entry->mem_size = 0;
+ }
+
+ nxpwifi_pm_wakeup_card(adapter);
+ sdio_claim_host(card->func);
+
+ nxpwifi_dbg(adapter, MSG, "== nxpwifi firmware dump start ==\n");
+
+ stat = nxpwifi_sdio_rdwr_firmware(adapter, doneflag);
+ if (stat == RDWR_STATUS_FAILURE)
+ goto done;
+
+ reg = card->reg->fw_dump_start;
+ /* Read the number of the memories which will dump */
+ dump_num = sdio_readb(card->func, reg, &ret);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR, "SDIO read memory length err\n");
+ goto done;
+ }
+
+ /* Read the length of every memory which will dump */
+ for (idx = 0; idx < dump_num; idx++) {
+ struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
+
+ stat = nxpwifi_sdio_rdwr_firmware(adapter, doneflag);
+ if (stat == RDWR_STATUS_FAILURE)
+ goto done;
+
+ memory_size = 0;
+ reg = card->reg->fw_dump_start;
+ for (i = 0; i < 4; i++) {
+ read_reg = sdio_readb(card->func, reg, &ret);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR, "SDIO read err\n");
+ goto done;
+ }
+ memory_size |= (read_reg << i * 8);
+ reg++;
+ }
+
+ if (memory_size == 0) {
+ nxpwifi_dbg(adapter, DUMP, "Firmware dump Finished!\n");
+ ret = nxpwifi_write_reg(adapter,
+ card->reg->fw_dump_ctrl,
+ FW_DUMP_READ_DONE);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR, "SDIO write err\n");
+ return;
+ }
+ break;
+ }
+
+ nxpwifi_dbg(adapter, DUMP,
+ "%s_SIZE=0x%x\n", entry->mem_name, memory_size);
+ entry->mem_ptr = vmalloc(memory_size + 1);
+ entry->mem_size = memory_size;
+ if (!entry->mem_ptr)
+ goto done;
+ dbg_ptr = entry->mem_ptr;
+ end_ptr = dbg_ptr + memory_size;
+
+ doneflag = entry->done_flag;
+ nxpwifi_dbg(adapter, DUMP,
+ "Start %s output, please wait...\n",
+ entry->mem_name);
+
+ do {
+ stat = nxpwifi_sdio_rdwr_firmware(adapter, doneflag);
+ if (stat == RDWR_STATUS_FAILURE)
+ goto done;
+
+ reg_start = card->reg->fw_dump_start;
+ reg_end = card->reg->fw_dump_end;
+ for (reg = reg_start; reg <= reg_end; reg++) {
+ *dbg_ptr = sdio_readb(card->func, reg, &ret);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR,
+ "SDIO read err\n");
+ goto done;
+ }
+ if (dbg_ptr < end_ptr)
+ dbg_ptr++;
+ else
+ nxpwifi_dbg(adapter, ERROR,
+ "Allocated buf not enough\n");
+ }
+
+ if (stat != RDWR_STATUS_DONE)
+ continue;
+
+ nxpwifi_dbg(adapter, DUMP, "%s done: size=0x%tx\n",
+ entry->mem_name, dbg_ptr - entry->mem_ptr);
+ break;
+ } while (1);
+ }
+ nxpwifi_dbg(adapter, MSG, "== nxpwifi firmware dump end ==\n");
+
+done:
+ sdio_release_host(card->func);
+}
+
+static void nxpwifi_sdio_generic_fw_dump(struct nxpwifi_adapter *adapter)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ struct memory_type_mapping *entry = &generic_mem_type_map[0];
+ unsigned int reg, reg_start, reg_end;
+ u8 start_flag = 0, done_flag = 0;
+ u8 *dbg_ptr, *end_ptr;
+ enum rdwr_status stat;
+ int ret = -EPERM, tries;
+
+ if (!card->fw_dump_enh)
+ return;
+
+ if (entry->mem_ptr) {
+ vfree(entry->mem_ptr);
+ entry->mem_ptr = NULL;
+ }
+ entry->mem_size = 0;
+
+ nxpwifi_pm_wakeup_card(adapter);
+ sdio_claim_host(card->func);
+
+ nxpwifi_dbg(adapter, MSG, "== nxpwifi firmware dump start ==\n");
+
+ stat = nxpwifi_sdio_rdwr_firmware(adapter, done_flag);
+ if (stat == RDWR_STATUS_FAILURE)
+ goto done;
+
+ reg_start = card->reg->fw_dump_start;
+ reg_end = card->reg->fw_dump_end;
+ for (reg = reg_start; reg <= reg_end; reg++) {
+ for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
+ start_flag = sdio_readb(card->func, reg, &ret);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR,
+ "SDIO read err\n");
+ goto done;
+ }
+ if (start_flag == 0)
+ break;
+ if (tries == MAX_POLL_TRIES) {
+ nxpwifi_dbg(adapter, ERROR,
+ "FW not ready to dump\n");
+ ret = -EPERM;
+ goto done;
+ }
+ }
+ usleep_range(100, 200);
+ }
+
+ entry->mem_ptr = vmalloc(0xf0000 + 1);
+ if (!entry->mem_ptr) {
+ ret = -ENOMEM;
+ goto done;
+ }
+ dbg_ptr = entry->mem_ptr;
+ entry->mem_size = 0xf0000;
+ end_ptr = dbg_ptr + entry->mem_size;
+
+ done_flag = entry->done_flag;
+ nxpwifi_dbg(adapter, DUMP,
+ "Start %s output, please wait...\n", entry->mem_name);
+
+ while (true) {
+ stat = nxpwifi_sdio_rdwr_firmware(adapter, done_flag);
+ if (stat == RDWR_STATUS_FAILURE)
+ goto done;
+ for (reg = reg_start; reg <= reg_end; reg++) {
+ *dbg_ptr = sdio_readb(card->func, reg, &ret);
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR,
+ "SDIO read err\n");
+ goto done;
+ }
+ dbg_ptr++;
+ if (dbg_ptr >= end_ptr) {
+ u8 *tmp_ptr;
+
+ tmp_ptr = vmalloc(entry->mem_size + 0x4000 + 1);
+ if (!tmp_ptr)
+ goto done;
+
+ memcpy(tmp_ptr, entry->mem_ptr,
+ entry->mem_size);
+ vfree(entry->mem_ptr);
+ entry->mem_ptr = tmp_ptr;
+ tmp_ptr = NULL;
+ dbg_ptr = entry->mem_ptr + entry->mem_size;
+ entry->mem_size += 0x4000;
+ end_ptr = entry->mem_ptr + entry->mem_size;
+ }
+ }
+ if (stat == RDWR_STATUS_DONE) {
+ entry->mem_size = dbg_ptr - entry->mem_ptr;
+ nxpwifi_dbg(adapter, DUMP, "dump %s done size=0x%x\n",
+ entry->mem_name, entry->mem_size);
+ ret = 0;
+ break;
+ }
+ }
+ nxpwifi_dbg(adapter, MSG, "== nxpwifi firmware dump end ==\n");
+
+done:
+ if (ret) {
+ nxpwifi_dbg(adapter, ERROR, "firmware dump failed\n");
+ if (entry->mem_ptr) {
+ vfree(entry->mem_ptr);
+ entry->mem_ptr = NULL;
+ }
+ entry->mem_size = 0;
+ }
+ sdio_release_host(card->func);
+}
+
+static void nxpwifi_sdio_device_dump_work(struct nxpwifi_adapter *adapter)
+{
+ struct sdio_mmc_card *card = adapter->card;
+
+ adapter->devdump_data = vzalloc(NXPWIFI_FW_DUMP_SIZE);
+ if (!adapter->devdump_data)
+ return;
+
+ nxpwifi_drv_info_dump(adapter);
+ if (card->fw_dump_enh)
+ nxpwifi_sdio_generic_fw_dump(adapter);
+ else
+ nxpwifi_sdio_fw_dump(adapter);
+ nxpwifi_prepare_fw_dump_info(adapter);
+ nxpwifi_upload_device_dump(adapter);
+}
+
+static void nxpwifi_sdio_work(struct work_struct *work)
+{
+ struct sdio_mmc_card *card =
+ container_of(work, struct sdio_mmc_card, work);
+
+ if (test_and_clear_bit(NXPWIFI_IFACE_WORK_DEVICE_DUMP,
+ &card->work_flags))
+ nxpwifi_sdio_device_dump_work(card->adapter);
+ if (test_and_clear_bit(NXPWIFI_IFACE_WORK_CARD_RESET,
+ &card->work_flags))
+ nxpwifi_sdio_card_reset_work(card->adapter);
+}
+
+/* This function resets the card */
+static void nxpwifi_sdio_card_reset(struct nxpwifi_adapter *adapter)
+{
+ struct sdio_mmc_card *card = adapter->card;
+
+ if (!test_and_set_bit(NXPWIFI_IFACE_WORK_CARD_RESET, &card->work_flags))
+ nxpwifi_queue_work(adapter, &card->work);
+}
+
+/* This function dumps FW information */
+static void nxpwifi_sdio_device_dump(struct nxpwifi_adapter *adapter)
+{
+ struct sdio_mmc_card *card = adapter->card;
+
+ if (!test_and_set_bit(NXPWIFI_IFACE_WORK_DEVICE_DUMP,
+ &card->work_flags))
+ nxpwifi_queue_work(adapter, &card->work);
+}
+
+/* Function to dump SDIO function registers and SDIO scratch registers in case
+ * of FW crash
+ */
+static int
+nxpwifi_sdio_reg_dump(struct nxpwifi_adapter *adapter, char *drv_buf)
+{
+ char *p = drv_buf;
+ struct sdio_mmc_card *cardp = adapter->card;
+ int ret = 0;
+ u8 count, func, data, index = 0, size = 0;
+ u8 reg, reg_start, reg_end;
+ char buf[256], *ptr;
+
+ if (!p)
+ return 0;
+
+ nxpwifi_dbg(adapter, MSG, "SDIO register dump start\n");
+
+ nxpwifi_pm_wakeup_card(adapter);
+
+ sdio_claim_host(cardp->func);
+
+ for (count = 0; count < 5; count++) {
+ memset(buf, 0, sizeof(buf));
+ ptr = buf;
+
+ switch (count) {
+ case 0:
+ /* Read the registers of SDIO function0 */
+ func = count;
+ reg_start = 0;
+ reg_end = 9;
+ break;
+ case 1:
+ /* Read the registers of SDIO function1 */
+ func = count;
+ reg_start = cardp->reg->func1_dump_reg_start;
+ reg_end = cardp->reg->func1_dump_reg_end;
+ break;
+ case 2:
+ index = 0;
+ func = 1;
+ reg_start = cardp->reg->func1_spec_reg_table[index++];
+ size = cardp->reg->func1_spec_reg_num;
+ reg_end = cardp->reg->func1_spec_reg_table[size - 1];
+ break;
+ default:
+ /* Read the scratch registers of SDIO function1 */
+ if (count == 4)
+ mdelay(100);
+ func = 1;
+ reg_start = cardp->reg->func1_scratch_reg;
+ reg_end = reg_start + NXPWIFI_SDIO_SCRATCH_SIZE;
+ }
+
+ if (count != 2)
+ ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
+ func, reg_start, reg_end);
+ else
+ ptr += sprintf(ptr, "SDIO Func%d: ", func);
+
+ for (reg = reg_start; reg <= reg_end;) {
+ if (func == 0)
+ data = sdio_f0_readb(cardp->func, reg, &ret);
+ else
+ data = sdio_readb(cardp->func, reg, &ret);
+
+ if (count == 2)
+ ptr += sprintf(ptr, "(%#x) ", reg);
+ if (!ret) {
+ ptr += sprintf(ptr, "%02x ", data);
+ } else {
+ ptr += sprintf(ptr, "ERR");
+ break;
+ }
+
+ if (count == 2 && reg < reg_end)
+ reg = cardp->reg->func1_spec_reg_table[index++];
+ else
+ reg++;
+ }
+
+ nxpwifi_dbg(adapter, MSG, "%s\n", buf);
+ p += sprintf(p, "%s\n", buf);
+ }
+
+ sdio_release_host(cardp->func);
+
+ nxpwifi_dbg(adapter, MSG, "SDIO register dump end\n");
+
+ return p - drv_buf;
+}
+
+/* sdio device/function initialization, code is extracted
+ * from init_if handler and register_dev handler.
+ */
+static void nxpwifi_sdio_up_dev(struct nxpwifi_adapter *adapter)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ u8 sdio_ireg;
+
+ sdio_claim_host(card->func);
+ sdio_enable_func(card->func);
+ sdio_set_block_size(card->func, NXPWIFI_SDIO_BLOCK_SIZE);
+ sdio_release_host(card->func);
+
+ /* tx_buf_size might be changed to 3584 by firmware during
+ * data transfer, we will reset to default size.
+ */
+ adapter->tx_buf_size = card->tx_buf_size;
+
+ /* Read the host_int_status_reg for ACK the first interrupt got
+ * from the bootloader. If we don't do this we get a interrupt
+ * as soon as we register the irq.
+ */
+ nxpwifi_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
+
+ if (nxpwifi_init_sdio_ioport(adapter))
+ dev_err(&card->func->dev, "error enabling SDIO port\n");
+}
+
+static struct nxpwifi_if_ops sdio_ops = {
+ .init_if = nxpwifi_init_sdio,
+ .cleanup_if = nxpwifi_cleanup_sdio,
+ .check_fw_status = nxpwifi_check_fw_status,
+ .check_winner_status = nxpwifi_check_winner_status,
+ .prog_fw = nxpwifi_prog_fw_w_helper,
+ .register_dev = nxpwifi_register_dev,
+ .unregister_dev = nxpwifi_unregister_dev,
+ .enable_int = nxpwifi_sdio_enable_host_int,
+ .disable_int = nxpwifi_sdio_disable_host_int,
+ .process_int_status = nxpwifi_process_int_status,
+ .host_to_card = nxpwifi_sdio_host_to_card,
+ .wakeup = nxpwifi_pm_wakeup_card,
+ .wakeup_complete = nxpwifi_pm_wakeup_card_complete,
+
+ /* SDIO specific */
+ .update_mp_end_port = nxpwifi_update_mp_end_port,
+ .cleanup_mpa_buf = nxpwifi_cleanup_mpa_buf,
+ .cmdrsp_complete = nxpwifi_sdio_cmdrsp_complete,
+ .event_complete = nxpwifi_sdio_event_complete,
+ .dnld_fw = nxpwifi_sdio_dnld_fw,
+ .card_reset = nxpwifi_sdio_card_reset,
+ .reg_dump = nxpwifi_sdio_reg_dump,
+ .device_dump = nxpwifi_sdio_device_dump,
+ .deaggr_pkt = nxpwifi_deaggr_sdio_pkt,
+ .up_dev = nxpwifi_sdio_up_dev,
+};
+
+module_driver(nxpwifi_sdio, sdio_register_driver, sdio_unregister_driver);
+
+MODULE_AUTHOR("NXP International Ltd.");
+MODULE_DESCRIPTION("NXP WiFi SDIO Driver version " SDIO_VERSION);
+MODULE_VERSION(SDIO_VERSION);
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE(IW61X_SDIO_FW_NAME);
--
2.34.1
