diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/usb_mcu.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/usb_mcu.c | 335 |
1 files changed, 0 insertions, 335 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/usb_mcu.c b/drivers/net/wireless/mediatek/mt76/usb_mcu.c index 362a6de73fc1..036be4163e69 100644 --- a/drivers/net/wireless/mediatek/mt76/usb_mcu.c +++ b/drivers/net/wireless/mediatek/mt76/usb_mcu.c @@ -14,34 +14,7 @@ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ -#include <linux/firmware.h> - #include "mt76.h" -#include "dma.h" - -#define MT_CMD_HDR_LEN 4 - -#define MT_FCE_DMA_ADDR 0x0230 -#define MT_FCE_DMA_LEN 0x0234 - -#define MT_TX_CPU_FROM_FCE_CPU_DESC_IDX 0x09a8 - -#define MT_INBAND_PACKET_MAX_LEN 192 - -static struct sk_buff * -mt76u_mcu_msg_alloc(const void *data, int len) -{ - struct sk_buff *skb; - - skb = alloc_skb(MT_CMD_HDR_LEN + len + 8, GFP_KERNEL); - if (!skb) - return NULL; - - skb_reserve(skb, MT_CMD_HDR_LEN); - skb_put_data(skb, data, len); - - return skb; -} void mt76u_mcu_complete_urb(struct urb *urb) { @@ -51,302 +24,6 @@ void mt76u_mcu_complete_urb(struct urb *urb) } EXPORT_SYMBOL_GPL(mt76u_mcu_complete_urb); -static void -mt76u_multiple_mcu_reads(struct mt76_dev *dev, u8 *data, - int len) -{ - struct mt76_usb *usb = &dev->usb; - u32 reg, val; - int i; - - if (usb->mcu.burst) { - WARN_ON_ONCE(len / 4 != usb->mcu.rp_len); - - reg = usb->mcu.rp[0].reg - usb->mcu.base; - for (i = 0; i < usb->mcu.rp_len; i++) { - val = get_unaligned_le32(data + 4 * i); - usb->mcu.rp[i].reg = reg++; - usb->mcu.rp[i].value = val; - } - } else { - WARN_ON_ONCE(len / 8 != usb->mcu.rp_len); - - for (i = 0; i < usb->mcu.rp_len; i++) { - reg = get_unaligned_le32(data + 8 * i) - - usb->mcu.base; - val = get_unaligned_le32(data + 8 * i + 4); - - WARN_ON_ONCE(usb->mcu.rp[i].reg != reg); - usb->mcu.rp[i].value = val; - } - } -} - -static int mt76u_mcu_wait_resp(struct mt76_dev *dev, u8 seq) -{ - struct mt76_usb *usb = &dev->usb; - struct mt76u_buf *buf = &usb->mcu.res; - int i, ret; - u32 rxfce; - u8 *data; - - for (i = 0; i < 5; i++) { - if (!wait_for_completion_timeout(&usb->mcu.cmpl, - msecs_to_jiffies(300))) - continue; - - if (buf->urb->status) - return -EIO; - - data = sg_virt(&buf->urb->sg[0]); - if (usb->mcu.rp) - mt76u_multiple_mcu_reads(dev, data + 4, - buf->urb->actual_length - 8); - - rxfce = get_unaligned_le32(data); - ret = mt76u_submit_buf(dev, USB_DIR_IN, - MT_EP_IN_CMD_RESP, - buf, GFP_KERNEL, - mt76u_mcu_complete_urb, - &usb->mcu.cmpl); - if (ret) - return ret; - - if (seq == FIELD_GET(MT_RX_FCE_INFO_CMD_SEQ, rxfce) && - FIELD_GET(MT_RX_FCE_INFO_EVT_TYPE, rxfce) == EVT_CMD_DONE) - return 0; - - dev_err(dev->dev, "error: MCU resp evt:%lx seq:%hhx-%lx\n", - FIELD_GET(MT_RX_FCE_INFO_EVT_TYPE, rxfce), - seq, FIELD_GET(MT_RX_FCE_INFO_CMD_SEQ, rxfce)); - } - - dev_err(dev->dev, "error: %s timed out\n", __func__); - return -ETIMEDOUT; -} - -static int -__mt76u_mcu_send_msg(struct mt76_dev *dev, struct sk_buff *skb, - int cmd, bool wait_resp) -{ - struct usb_interface *intf = to_usb_interface(dev->dev); - struct usb_device *udev = interface_to_usbdev(intf); - struct mt76_usb *usb = &dev->usb; - unsigned int pipe; - int ret, sent; - u8 seq = 0; - u32 info; - - if (test_bit(MT76_REMOVED, &dev->state)) - return 0; - - pipe = usb_sndbulkpipe(udev, usb->out_ep[MT_EP_OUT_INBAND_CMD]); - if (wait_resp) { - seq = ++usb->mcu.msg_seq & 0xf; - if (!seq) - seq = ++usb->mcu.msg_seq & 0xf; - } - - info = FIELD_PREP(MT_MCU_MSG_CMD_SEQ, seq) | - FIELD_PREP(MT_MCU_MSG_CMD_TYPE, cmd) | - MT_MCU_MSG_TYPE_CMD; - ret = mt76u_skb_dma_info(skb, CPU_TX_PORT, info); - if (ret) - return ret; - - ret = usb_bulk_msg(udev, pipe, skb->data, skb->len, &sent, 500); - if (ret) - return ret; - - if (wait_resp) - ret = mt76u_mcu_wait_resp(dev, seq); - - consume_skb(skb); - - return ret; -} - -static int -mt76u_mcu_send_msg(struct mt76_dev *dev, struct sk_buff *skb, - int cmd, bool wait_resp) -{ - struct mt76_usb *usb = &dev->usb; - int err; - - mutex_lock(&usb->mcu.mutex); - err = __mt76u_mcu_send_msg(dev, skb, cmd, wait_resp); - mutex_unlock(&usb->mcu.mutex); - - return err; -} - -static inline void skb_put_le32(struct sk_buff *skb, u32 val) -{ - put_unaligned_le32(val, skb_put(skb, 4)); -} - -static int -mt76u_mcu_wr_rp(struct mt76_dev *dev, u32 base, - const struct mt76_reg_pair *data, int n) -{ - const int CMD_RANDOM_WRITE = 12; - const int max_vals_per_cmd = MT_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 = mt76u_mcu_send_msg(dev, skb, CMD_RANDOM_WRITE, cnt == n); - if (ret) - return ret; - - return mt76u_mcu_wr_rp(dev, base, data + cnt, n - cnt); -} - -static int -mt76u_mcu_rd_rp(struct mt76_dev *dev, u32 base, - struct mt76_reg_pair *data, int n) -{ - const int CMD_RANDOM_READ = 10; - const int max_vals_per_cmd = MT_INBAND_PACKET_MAX_LEN / 8; - struct mt76_usb *usb = &dev->usb; - 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(&usb->mcu.mutex); - - usb->mcu.rp = data; - usb->mcu.rp_len = n; - usb->mcu.base = base; - usb->mcu.burst = false; - - ret = __mt76u_mcu_send_msg(dev, skb, CMD_RANDOM_READ, true); - - usb->mcu.rp = NULL; - - mutex_unlock(&usb->mcu.mutex); - - return ret; -} - -void mt76u_mcu_fw_reset(struct mt76_dev *dev) -{ - mt76u_vendor_request(dev, MT_VEND_DEV_MODE, - USB_DIR_OUT | USB_TYPE_VENDOR, - 0x1, 0, NULL, 0); -} -EXPORT_SYMBOL_GPL(mt76u_mcu_fw_reset); - -static int -__mt76u_mcu_fw_send_data(struct mt76_dev *dev, struct mt76u_buf *buf, - const void *fw_data, int len, u32 dst_addr) -{ - u8 *data = sg_virt(&buf->urb->sg[0]); - DECLARE_COMPLETION_ONSTACK(cmpl); - __le32 info; - u32 val; - int err; - - info = cpu_to_le32(FIELD_PREP(MT_MCU_MSG_PORT, CPU_TX_PORT) | - FIELD_PREP(MT_MCU_MSG_LEN, len) | - MT_MCU_MSG_TYPE_CMD); - - memcpy(data, &info, sizeof(info)); - memcpy(data + sizeof(info), fw_data, len); - memset(data + sizeof(info) + len, 0, 4); - - mt76u_single_wr(dev, MT_VEND_WRITE_FCE, - MT_FCE_DMA_ADDR, dst_addr); - len = roundup(len, 4); - mt76u_single_wr(dev, MT_VEND_WRITE_FCE, - MT_FCE_DMA_LEN, len << 16); - - buf->len = MT_CMD_HDR_LEN + len + sizeof(info); - err = mt76u_submit_buf(dev, USB_DIR_OUT, - MT_EP_OUT_INBAND_CMD, - buf, GFP_KERNEL, - mt76u_mcu_complete_urb, &cmpl); - if (err < 0) - return err; - - if (!wait_for_completion_timeout(&cmpl, - msecs_to_jiffies(1000))) { - dev_err(dev->dev, "firmware upload timed out\n"); - usb_kill_urb(buf->urb); - return -ETIMEDOUT; - } - - if (mt76u_urb_error(buf->urb)) { - dev_err(dev->dev, "firmware upload failed: %d\n", - buf->urb->status); - return buf->urb->status; - } - - val = mt76u_rr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX); - val++; - mt76u_wr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX, val); - - return 0; -} - -int mt76u_mcu_fw_send_data(struct mt76_dev *dev, const void *data, - int data_len, u32 max_payload, u32 offset) -{ - int err, len, pos = 0, max_len = max_payload - 8; - struct mt76u_buf buf; - - err = mt76u_buf_alloc(dev, &buf, 1, max_payload, max_payload, - GFP_KERNEL); - if (err < 0) - return err; - - while (data_len > 0) { - len = min_t(int, data_len, max_len); - err = __mt76u_mcu_fw_send_data(dev, &buf, data + pos, - len, offset + pos); - if (err < 0) - break; - - data_len -= len; - pos += len; - usleep_range(5000, 10000); - } - mt76u_buf_free(&buf); - - return err; -} -EXPORT_SYMBOL_GPL(mt76u_mcu_fw_send_data); - int mt76u_mcu_init_rx(struct mt76_dev *dev) { struct mt76_usb *usb = &dev->usb; @@ -377,15 +54,3 @@ void mt76u_mcu_deinit(struct mt76_dev *dev) mt76u_buf_free(&usb->mcu.res); } EXPORT_SYMBOL_GPL(mt76u_mcu_deinit); - -void mt76u_init_mcu_ops(struct mt76_dev *dev) -{ - static const struct mt76_mcu_ops mt76u_mcu_ops = { - .mcu_msg_alloc = mt76u_mcu_msg_alloc, - .mcu_send_msg = mt76u_mcu_send_msg, - .mcu_wr_rp = mt76u_mcu_wr_rp, - .mcu_rd_rp = mt76u_mcu_rd_rp, - }; - - dev->mcu_ops = &mt76u_mcu_ops; -} |