diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt76x0/mcu.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76x0/mcu.c | 656 |
1 files changed, 0 insertions, 656 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x0/mcu.c b/drivers/net/wireless/mediatek/mt76/mt76x0/mcu.c deleted file mode 100644 index 8affacbab90a..000000000000 --- a/drivers/net/wireless/mediatek/mt76/mt76x0/mcu.c +++ /dev/null @@ -1,656 +0,0 @@ -/* - * (c) Copyright 2002-2010, Ralink Technology, Inc. - * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org> - * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl> - * Copyright (C) 2018 Stanislaw Gruszka <stf_xl@wp.pl> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <linux/kernel.h> -#include <linux/firmware.h> -#include <linux/delay.h> -#include <linux/usb.h> -#include <linux/skbuff.h> - -#include "mt76x0.h" -#include "dma.h" -#include "mcu.h" -#include "usb.h" -#include "trace.h" - -#define MCU_FW_URB_MAX_PAYLOAD 0x38f8 -#define MCU_FW_URB_SIZE (MCU_FW_URB_MAX_PAYLOAD + 12) -#define MCU_RESP_URB_SIZE 1024 - -static inline int firmware_running(struct mt76x0_dev *dev) -{ - return mt76_rr(dev, MT_MCU_COM_REG0) == 1; -} - -static inline void skb_put_le32(struct sk_buff *skb, u32 val) -{ - put_unaligned_le32(val, skb_put(skb, 4)); -} - -static inline void mt76x0_dma_skb_wrap_cmd(struct sk_buff *skb, - u8 seq, enum mcu_cmd cmd) -{ - WARN_ON(mt76x0_dma_skb_wrap(skb, CPU_TX_PORT, DMA_COMMAND, - FIELD_PREP(MT_TXD_CMD_SEQ, seq) | - FIELD_PREP(MT_TXD_CMD_TYPE, cmd))); -} - -static inline void trace_mt76x0_mcu_msg_send_cs(struct mt76_dev *dev, - struct sk_buff *skb, bool need_resp) -{ - u32 i, csum = 0; - - for (i = 0; i < skb->len / 4; i++) - csum ^= get_unaligned_le32(skb->data + i * 4); - - trace_mt76x0_mcu_msg_send(dev, skb, csum, need_resp); -} - -static struct sk_buff * -mt76x0_mcu_msg_alloc(struct mt76x0_dev *dev, const void *data, int len) -{ - struct sk_buff *skb; - - WARN_ON(len % 4); /* if length is not divisible by 4 we need to pad */ - - skb = alloc_skb(len + MT_DMA_HDR_LEN + 4, GFP_KERNEL); - if (skb) { - skb_reserve(skb, MT_DMA_HDR_LEN); - memcpy(skb_put(skb, len), data, len); - } - return skb; -} - -static void mt76x0_read_resp_regs(struct mt76x0_dev *dev, int len) -{ - int i; - int n = dev->mcu.reg_pairs_len; - u8 *buf = dev->mcu.resp.buf; - - buf += 4; - len -= 8; - - if (dev->mcu.burst_read) { - u32 reg = dev->mcu.reg_pairs[0].reg - dev->mcu.reg_base; - - WARN_ON_ONCE(len/4 != n); - for (i = 0; i < n; i++) { - u32 val = get_unaligned_le32(buf + 4*i); - - dev->mcu.reg_pairs[i].reg = reg++; - dev->mcu.reg_pairs[i].value = val; - } - } else { - WARN_ON_ONCE(len/8 != n); - for (i = 0; i < n; i++) { - u32 reg = get_unaligned_le32(buf + 8*i) - dev->mcu.reg_base; - u32 val = get_unaligned_le32(buf + 8*i + 4); - - WARN_ON_ONCE(dev->mcu.reg_pairs[i].reg != reg); - dev->mcu.reg_pairs[i].value = val; - } - } -} - -static int mt76x0_mcu_wait_resp(struct mt76x0_dev *dev, u8 seq) -{ - struct urb *urb = dev->mcu.resp.urb; - u32 rxfce; - int urb_status, ret, try = 5; - - while (try--) { - if (!wait_for_completion_timeout(&dev->mcu.resp_cmpl, - msecs_to_jiffies(300))) { - dev_warn(dev->mt76.dev, "Warning: %s retrying\n", __func__); - continue; - } - - /* Make copies of important data before reusing the urb */ - rxfce = get_unaligned_le32(dev->mcu.resp.buf); - urb_status = urb->status * mt76x0_urb_has_error(urb); - - if (urb_status == 0 && dev->mcu.reg_pairs) - mt76x0_read_resp_regs(dev, urb->actual_length); - - ret = mt76x0_usb_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP, - &dev->mcu.resp, GFP_KERNEL, - mt76x0_complete_urb, - &dev->mcu.resp_cmpl); - if (ret) - return ret; - - if (urb_status) - dev_err(dev->mt76.dev, "Error: MCU resp urb failed:%d\n", - urb_status); - - if (FIELD_GET(MT_RXD_CMD_INFO_CMD_SEQ, rxfce) == seq && - FIELD_GET(MT_RXD_CMD_INFO_EVT_TYPE, rxfce) == CMD_DONE) - return 0; - - dev_err(dev->mt76.dev, "Error: MCU resp evt:%lx seq:%hhx-%lx!\n", - FIELD_GET(MT_RXD_CMD_INFO_EVT_TYPE, rxfce), - seq, FIELD_GET(MT_RXD_CMD_INFO_CMD_SEQ, rxfce)); - } - - dev_err(dev->mt76.dev, "Error: %s timed out\n", __func__); - return -ETIMEDOUT; -} - -static int -__mt76x0_mcu_msg_send(struct mt76x0_dev *dev, struct sk_buff *skb, - enum mcu_cmd cmd, bool wait_resp) -{ - struct usb_device *usb_dev = mt76x0_to_usb_dev(dev); - unsigned cmd_pipe = usb_sndbulkpipe(usb_dev, - dev->out_ep[MT_EP_OUT_INBAND_CMD]); - int sent, ret; - u8 seq = 0; - - if (wait_resp) - while (!seq) - seq = ++dev->mcu.msg_seq & 0xf; - - mt76x0_dma_skb_wrap_cmd(skb, seq, cmd); - - if (dev->mcu.resp_cmpl.done) - dev_err(dev->mt76.dev, "Error: MCU response pre-completed!\n"); - - trace_mt76x0_mcu_msg_send_cs(&dev->mt76, skb, wait_resp); - trace_mt76x0_submit_urb_sync(&dev->mt76, cmd_pipe, skb->len); - - ret = usb_bulk_msg(usb_dev, cmd_pipe, skb->data, skb->len, &sent, 500); - if (ret) { - dev_err(dev->mt76.dev, "Error: send MCU cmd failed:%d\n", ret); - goto out; - } - if (sent != skb->len) - dev_err(dev->mt76.dev, "Error: %s sent != skb->len\n", __func__); - - if (wait_resp) - ret = mt76x0_mcu_wait_resp(dev, seq); - -out: - return ret; -} - -static int -mt76x0_mcu_msg_send(struct mt76x0_dev *dev, struct sk_buff *skb, - enum mcu_cmd cmd, bool wait_resp) -{ - int ret; - - if (test_bit(MT76_REMOVED, &dev->mt76.state)) - return 0; - - mutex_lock(&dev->mcu.mutex); - ret = __mt76x0_mcu_msg_send(dev, skb, cmd, wait_resp); - mutex_unlock(&dev->mcu.mutex); - - consume_skb(skb); - - return ret; -} - -int mt76x0_mcu_function_select(struct mt76x0_dev *dev, - enum mcu_function func, u32 val) -{ - struct sk_buff *skb; - struct { - __le32 id; - __le32 value; - } __packed __aligned(4) msg = { - .id = cpu_to_le32(func), - .value = cpu_to_le32(val), - }; - - skb = mt76x0_mcu_msg_alloc(dev, &msg, sizeof(msg)); - if (!skb) - return -ENOMEM; - return mt76x0_mcu_msg_send(dev, skb, CMD_FUN_SET_OP, func == 5); -} - -int -mt76x0_mcu_calibrate(struct mt76x0_dev *dev, enum mcu_calibrate cal, u32 val) -{ - struct sk_buff *skb; - struct { - __le32 id; - __le32 value; - } __packed __aligned(4) msg = { - .id = cpu_to_le32(cal), - .value = cpu_to_le32(val), - }; - - skb = mt76x0_mcu_msg_alloc(dev, &msg, sizeof(msg)); - if (!skb) - return -ENOMEM; - return mt76x0_mcu_msg_send(dev, skb, CMD_CALIBRATION_OP, true); -} - -int mt76x0_write_reg_pairs(struct mt76x0_dev *dev, u32 base, - const struct mt76_reg_pair *data, int n) -{ - const int max_vals_per_cmd = INBAND_PACKET_MAX_LEN / 8; - struct sk_buff *skb; - int cnt, i, ret; - - if (!n) - return 0; - - cnt = min(max_vals_per_cmd, n); - - skb = alloc_skb(cnt * 8 + MT_DMA_HDR_LEN + 4, GFP_KERNEL); - if (!skb) - return -ENOMEM; - skb_reserve(skb, MT_DMA_HDR_LEN); - - for (i = 0; i < cnt; i++) { - skb_put_le32(skb, base + data[i].reg); - skb_put_le32(skb, data[i].value); - } - - ret = mt76x0_mcu_msg_send(dev, skb, CMD_RANDOM_WRITE, cnt == n); - if (ret) - return ret; - - return mt76x0_write_reg_pairs(dev, base, data + cnt, n - cnt); -} - -int mt76x0_read_reg_pairs(struct mt76x0_dev *dev, u32 base, - struct mt76_reg_pair *data, int n) -{ - const int max_vals_per_cmd = INBAND_PACKET_MAX_LEN / 8; - struct sk_buff *skb; - int cnt, i, ret; - - if (!n) - return 0; - - cnt = min(max_vals_per_cmd, n); - if (cnt != n) - return -EINVAL; - - skb = alloc_skb(cnt * 8 + MT_DMA_HDR_LEN + 4, GFP_KERNEL); - if (!skb) - return -ENOMEM; - skb_reserve(skb, MT_DMA_HDR_LEN); - - for (i = 0; i < cnt; i++) { - skb_put_le32(skb, base + data[i].reg); - skb_put_le32(skb, data[i].value); - } - - mutex_lock(&dev->mcu.mutex); - - dev->mcu.reg_pairs = data; - dev->mcu.reg_pairs_len = n; - dev->mcu.reg_base = base; - dev->mcu.burst_read = false; - - ret = __mt76x0_mcu_msg_send(dev, skb, CMD_RANDOM_READ, true); - - dev->mcu.reg_pairs = NULL; - - mutex_unlock(&dev->mcu.mutex); - - consume_skb(skb); - - return ret; - -} - -int mt76x0_burst_write_regs(struct mt76x0_dev *dev, u32 offset, - const u32 *data, int n) -{ - const int max_regs_per_cmd = INBAND_PACKET_MAX_LEN / 4 - 1; - struct sk_buff *skb; - int cnt, i, ret; - - if (!n) - return 0; - - cnt = min(max_regs_per_cmd, n); - - skb = alloc_skb(cnt * 4 + MT_DMA_HDR_LEN + 4, GFP_KERNEL); - if (!skb) - return -ENOMEM; - skb_reserve(skb, MT_DMA_HDR_LEN); - - skb_put_le32(skb, MT_MCU_MEMMAP_WLAN + offset); - for (i = 0; i < cnt; i++) - skb_put_le32(skb, data[i]); - - ret = mt76x0_mcu_msg_send(dev, skb, CMD_BURST_WRITE, cnt == n); - if (ret) - return ret; - - return mt76x0_burst_write_regs(dev, offset + cnt * 4, - data + cnt, n - cnt); -} - -#if 0 -static int mt76x0_burst_read_regs(struct mt76x0_dev *dev, u32 base, - struct mt76_reg_pair *data, int n) -{ - const int max_vals_per_cmd = INBAND_PACKET_MAX_LEN / 4 - 1; - struct sk_buff *skb; - int cnt, ret; - - if (!n) - return 0; - - cnt = min(max_vals_per_cmd, n); - if (cnt != n) - return -EINVAL; - - skb = alloc_skb(cnt * 4 + MT_DMA_HDR_LEN + 4, GFP_KERNEL); - if (!skb) - return -ENOMEM; - skb_reserve(skb, MT_DMA_HDR_LEN); - - skb_put_le32(skb, base + data[0].reg); - skb_put_le32(skb, n); - - mutex_lock(&dev->mcu.mutex); - - dev->mcu.reg_pairs = data; - dev->mcu.reg_pairs_len = n; - dev->mcu.reg_base = base; - dev->mcu.burst_read = true; - - ret = __mt76x0_mcu_msg_send(dev, skb, CMD_BURST_READ, true); - - dev->mcu.reg_pairs = NULL; - - mutex_unlock(&dev->mcu.mutex); - - consume_skb(skb); - - return ret; -} -#endif - -struct mt76_fw_header { - __le32 ilm_len; - __le32 dlm_len; - __le16 build_ver; - __le16 fw_ver; - u8 pad[4]; - char build_time[16]; -}; - -struct mt76_fw { - struct mt76_fw_header hdr; - u8 ivb[MT_MCU_IVB_SIZE]; - u8 ilm[]; -}; - -static int __mt76x0_dma_fw(struct mt76x0_dev *dev, - const struct mt76x0_dma_buf *dma_buf, - const void *data, u32 len, u32 dst_addr) -{ - DECLARE_COMPLETION_ONSTACK(cmpl); - struct mt76x0_dma_buf buf = *dma_buf; /* we need to fake length */ - __le32 reg; - u32 val; - int ret; - - reg = cpu_to_le32(FIELD_PREP(MT_TXD_INFO_TYPE, DMA_COMMAND) | - FIELD_PREP(MT_TXD_INFO_D_PORT, CPU_TX_PORT) | - FIELD_PREP(MT_TXD_INFO_LEN, len)); - memcpy(buf.buf, ®, sizeof(reg)); - memcpy(buf.buf + sizeof(reg), data, len); - memset(buf.buf + sizeof(reg) + len, 0, 8); - - ret = mt76x0_vendor_single_wr(dev, MT_VEND_WRITE_FCE, - MT_FCE_DMA_ADDR, dst_addr); - if (ret) - return ret; - len = roundup(len, 4); - ret = mt76x0_vendor_single_wr(dev, MT_VEND_WRITE_FCE, - MT_FCE_DMA_LEN, len << 16); - if (ret) - return ret; - - buf.len = MT_DMA_HDR_LEN + len + 4; - ret = mt76x0_usb_submit_buf(dev, USB_DIR_OUT, MT_EP_OUT_INBAND_CMD, - &buf, GFP_KERNEL, - mt76x0_complete_urb, &cmpl); - if (ret) - return ret; - - if (!wait_for_completion_timeout(&cmpl, msecs_to_jiffies(1000))) { - dev_err(dev->mt76.dev, "Error: firmware upload timed out\n"); - usb_kill_urb(buf.urb); - return -ETIMEDOUT; - } - if (mt76x0_urb_has_error(buf.urb)) { - dev_err(dev->mt76.dev, "Error: firmware upload urb failed:%d\n", - buf.urb->status); - return buf.urb->status; - } - - val = mt76_rr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX); - val++; - mt76_wr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX, val); - - msleep(5); - - return 0; -} - -static int -mt76x0_dma_fw(struct mt76x0_dev *dev, struct mt76x0_dma_buf *dma_buf, - const void *data, int len, u32 dst_addr) -{ - int n, ret; - - if (len == 0) - return 0; - - n = min(MCU_FW_URB_MAX_PAYLOAD, len); - ret = __mt76x0_dma_fw(dev, dma_buf, data, n, dst_addr); - if (ret) - return ret; - -#if 0 - if (!mt76_poll_msec(dev, MT_MCU_COM_REG1, BIT(31), BIT(31), 500)) - return -ETIMEDOUT; -#endif - - return mt76x0_dma_fw(dev, dma_buf, data + n, len - n, dst_addr + n); -} - -static int -mt76x0_upload_firmware(struct mt76x0_dev *dev, const struct mt76_fw *fw) -{ - struct mt76x0_dma_buf dma_buf; - void *ivb; - u32 ilm_len, dlm_len; - int i, ret; - - ivb = kmemdup(fw->ivb, sizeof(fw->ivb), GFP_KERNEL); - if (!ivb) - return -ENOMEM; - if (mt76x0_usb_alloc_buf(dev, MCU_FW_URB_SIZE, &dma_buf)) { - ret = -ENOMEM; - goto error; - } - - ilm_len = le32_to_cpu(fw->hdr.ilm_len) - sizeof(fw->ivb); - dev_dbg(dev->mt76.dev, "loading FW - ILM %u + IVB %zu\n", - ilm_len, sizeof(fw->ivb)); - ret = mt76x0_dma_fw(dev, &dma_buf, fw->ilm, ilm_len, sizeof(fw->ivb)); - if (ret) - goto error; - - dlm_len = le32_to_cpu(fw->hdr.dlm_len); - dev_dbg(dev->mt76.dev, "loading FW - DLM %u\n", dlm_len); - ret = mt76x0_dma_fw(dev, &dma_buf, fw->ilm + ilm_len, - dlm_len, MT_MCU_DLM_OFFSET); - if (ret) - goto error; - - ret = mt76x0_vendor_request(dev, MT_VEND_DEV_MODE, USB_DIR_OUT, - 0x12, 0, ivb, sizeof(fw->ivb)); - if (ret < 0) - goto error; - ret = 0; - - for (i = 100; i && !firmware_running(dev); i--) - msleep(10); - if (!i) { - ret = -ETIMEDOUT; - goto error; - } - - dev_dbg(dev->mt76.dev, "Firmware running!\n"); -error: - kfree(ivb); - mt76x0_usb_free_buf(dev, &dma_buf); - - return ret; -} - -static int mt76x0_load_firmware(struct mt76x0_dev *dev) -{ - const struct firmware *fw; - const struct mt76_fw_header *hdr; - int len, ret; - u32 val; - - mt76_wr(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN | - MT_USB_DMA_CFG_TX_BULK_EN)); - - if (firmware_running(dev)) - return 0; - - ret = request_firmware(&fw, MT7610_FIRMWARE, dev->mt76.dev); - if (ret) - return ret; - - if (!fw || !fw->data || fw->size < sizeof(*hdr)) - goto err_inv_fw; - - hdr = (const struct mt76_fw_header *) fw->data; - - if (le32_to_cpu(hdr->ilm_len) <= MT_MCU_IVB_SIZE) - goto err_inv_fw; - - len = sizeof(*hdr); - len += le32_to_cpu(hdr->ilm_len); - len += le32_to_cpu(hdr->dlm_len); - - if (fw->size != len) - goto err_inv_fw; - - val = le16_to_cpu(hdr->fw_ver); - dev_dbg(dev->mt76.dev, - "Firmware Version: %d.%d.%02d Build: %x Build time: %.16s\n", - (val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf, - le16_to_cpu(hdr->build_ver), hdr->build_time); - - len = le32_to_cpu(hdr->ilm_len); - - mt76_wr(dev, 0x1004, 0x2c); - - mt76_set(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN | - MT_USB_DMA_CFG_TX_BULK_EN) | - FIELD_PREP(MT_USB_DMA_CFG_RX_BULK_AGG_TOUT, 0x20)); - mt76x0_vendor_reset(dev); - msleep(5); -/* - mt76x0_rmw(dev, MT_PBF_CFG, 0, (MT_PBF_CFG_TX0Q_EN | - MT_PBF_CFG_TX1Q_EN | - MT_PBF_CFG_TX2Q_EN | - MT_PBF_CFG_TX3Q_EN)); -*/ - - mt76_wr(dev, MT_FCE_PSE_CTRL, 1); - - /* FCE tx_fs_base_ptr */ - mt76_wr(dev, MT_TX_CPU_FROM_FCE_BASE_PTR, 0x400230); - /* FCE tx_fs_max_cnt */ - mt76_wr(dev, MT_TX_CPU_FROM_FCE_MAX_COUNT, 1); - /* FCE pdma enable */ - mt76_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44); - /* FCE skip_fs_en */ - mt76_wr(dev, MT_FCE_SKIP_FS, 3); - - val = mt76_rr(dev, MT_USB_DMA_CFG); - val |= MT_USB_DMA_CFG_TX_WL_DROP; - mt76_wr(dev, MT_USB_DMA_CFG, val); - val &= ~MT_USB_DMA_CFG_TX_WL_DROP; - mt76_wr(dev, MT_USB_DMA_CFG, val); - - ret = mt76x0_upload_firmware(dev, (const struct mt76_fw *)fw->data); - release_firmware(fw); - - mt76_wr(dev, MT_FCE_PSE_CTRL, 1); - - return ret; - -err_inv_fw: - dev_err(dev->mt76.dev, "Invalid firmware image\n"); - release_firmware(fw); - return -ENOENT; -} - -int mt76x0_mcu_init(struct mt76x0_dev *dev) -{ - int ret; - - mutex_init(&dev->mcu.mutex); - - ret = mt76x0_load_firmware(dev); - if (ret) - return ret; - - set_bit(MT76_STATE_MCU_RUNNING, &dev->mt76.state); - - return 0; -} - -int mt76x0_mcu_cmd_init(struct mt76x0_dev *dev) -{ - int ret; - - ret = mt76x0_mcu_function_select(dev, Q_SELECT, 1); - if (ret) - return ret; - - init_completion(&dev->mcu.resp_cmpl); - if (mt76x0_usb_alloc_buf(dev, MCU_RESP_URB_SIZE, &dev->mcu.resp)) { - mt76x0_usb_free_buf(dev, &dev->mcu.resp); - return -ENOMEM; - } - - ret = mt76x0_usb_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP, - &dev->mcu.resp, GFP_KERNEL, - mt76x0_complete_urb, &dev->mcu.resp_cmpl); - if (ret) { - mt76x0_usb_free_buf(dev, &dev->mcu.resp); - return ret; - } - - return 0; -} - -void mt76x0_mcu_cmd_deinit(struct mt76x0_dev *dev) -{ - usb_kill_urb(dev->mcu.resp.urb); - mt76x0_usb_free_buf(dev, &dev->mcu.resp); -} |