From 3c8c20db769cd68e299b487035825e026b1a6ce9 Mon Sep 17 00:00:00 2001 From: Edwin Peer Date: Sun, 29 Aug 2021 03:34:58 -0400 Subject: bnxt_en: move HWRM API implementation into separate file Move all firmware messaging functions and definitions to new bnxt_hwrm.[ch]. The follow-on patches will make major modifications to these APIs. Signed-off-by: Edwin Peer Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 273 +----------------------------- 1 file changed, 1 insertion(+), 272 deletions(-) (limited to 'drivers/net/ethernet/broadcom/bnxt/bnxt.c') diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index dd2f80c394f5..10c39801ad5f 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -60,6 +60,7 @@ #include "bnxt_hsi.h" #include "bnxt.h" +#include "bnxt_hwrm.h" #include "bnxt_ulp.h" #include "bnxt_sriov.h" #include "bnxt_ethtool.h" @@ -4549,278 +4550,6 @@ static void bnxt_enable_int(struct bnxt *bp) } } -void bnxt_hwrm_cmd_hdr_init(struct bnxt *bp, void *request, u16 req_type, - u16 cmpl_ring, u16 target_id) -{ - struct input *req = request; - - req->req_type = cpu_to_le16(req_type); - req->cmpl_ring = cpu_to_le16(cmpl_ring); - req->target_id = cpu_to_le16(target_id); - req->resp_addr = cpu_to_le64(bp->hwrm_cmd_resp_dma_addr); -} - -static int bnxt_hwrm_to_stderr(u32 hwrm_err) -{ - switch (hwrm_err) { - case HWRM_ERR_CODE_SUCCESS: - return 0; - case HWRM_ERR_CODE_RESOURCE_LOCKED: - return -EROFS; - case HWRM_ERR_CODE_RESOURCE_ACCESS_DENIED: - return -EACCES; - case HWRM_ERR_CODE_RESOURCE_ALLOC_ERROR: - return -ENOSPC; - case HWRM_ERR_CODE_INVALID_PARAMS: - case HWRM_ERR_CODE_INVALID_FLAGS: - case HWRM_ERR_CODE_INVALID_ENABLES: - case HWRM_ERR_CODE_UNSUPPORTED_TLV: - case HWRM_ERR_CODE_UNSUPPORTED_OPTION_ERR: - return -EINVAL; - case HWRM_ERR_CODE_NO_BUFFER: - return -ENOMEM; - case HWRM_ERR_CODE_HOT_RESET_PROGRESS: - case HWRM_ERR_CODE_BUSY: - return -EAGAIN; - case HWRM_ERR_CODE_CMD_NOT_SUPPORTED: - return -EOPNOTSUPP; - default: - return -EIO; - } -} - -static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len, - int timeout, bool silent) -{ - int i, intr_process, rc, tmo_count; - struct input *req = msg; - u32 *data = msg; - u8 *valid; - u16 cp_ring_id, len = 0; - struct hwrm_err_output *resp = bp->hwrm_cmd_resp_addr; - u16 max_req_len = BNXT_HWRM_MAX_REQ_LEN; - struct hwrm_short_input short_input = {0}; - u32 doorbell_offset = BNXT_GRCPF_REG_CHIMP_COMM_TRIGGER; - u32 bar_offset = BNXT_GRCPF_REG_CHIMP_COMM; - u16 dst = BNXT_HWRM_CHNL_CHIMP; - - if (BNXT_NO_FW_ACCESS(bp) && - le16_to_cpu(req->req_type) != HWRM_FUNC_RESET) - return -EBUSY; - - if (msg_len > BNXT_HWRM_MAX_REQ_LEN) { - if (msg_len > bp->hwrm_max_ext_req_len || - !bp->hwrm_short_cmd_req_addr) - return -EINVAL; - } - - if (bnxt_kong_hwrm_message(bp, req)) { - dst = BNXT_HWRM_CHNL_KONG; - bar_offset = BNXT_GRCPF_REG_KONG_COMM; - doorbell_offset = BNXT_GRCPF_REG_KONG_COMM_TRIGGER; - } - - memset(resp, 0, PAGE_SIZE); - cp_ring_id = le16_to_cpu(req->cmpl_ring); - intr_process = (cp_ring_id == INVALID_HW_RING_ID) ? 0 : 1; - - req->seq_id = cpu_to_le16(bnxt_get_hwrm_seq_id(bp, dst)); - /* currently supports only one outstanding message */ - if (intr_process) - bp->hwrm_intr_seq_id = le16_to_cpu(req->seq_id); - - if ((bp->fw_cap & BNXT_FW_CAP_SHORT_CMD) || - msg_len > BNXT_HWRM_MAX_REQ_LEN) { - void *short_cmd_req = bp->hwrm_short_cmd_req_addr; - u16 max_msg_len; - - /* Set boundary for maximum extended request length for short - * cmd format. If passed up from device use the max supported - * internal req length. - */ - max_msg_len = bp->hwrm_max_ext_req_len; - - memcpy(short_cmd_req, req, msg_len); - if (msg_len < max_msg_len) - memset(short_cmd_req + msg_len, 0, - max_msg_len - msg_len); - - short_input.req_type = req->req_type; - short_input.signature = - cpu_to_le16(SHORT_REQ_SIGNATURE_SHORT_CMD); - short_input.size = cpu_to_le16(msg_len); - short_input.req_addr = - cpu_to_le64(bp->hwrm_short_cmd_req_dma_addr); - - data = (u32 *)&short_input; - msg_len = sizeof(short_input); - - /* Sync memory write before updating doorbell */ - wmb(); - - max_req_len = BNXT_HWRM_SHORT_REQ_LEN; - } - - /* Write request msg to hwrm channel */ - __iowrite32_copy(bp->bar0 + bar_offset, data, msg_len / 4); - - for (i = msg_len; i < max_req_len; i += 4) - writel(0, bp->bar0 + bar_offset + i); - - /* Ring channel doorbell */ - writel(1, bp->bar0 + doorbell_offset); - - if (!pci_is_enabled(bp->pdev)) - return -ENODEV; - - if (!timeout) - timeout = DFLT_HWRM_CMD_TIMEOUT; - /* Limit timeout to an upper limit */ - timeout = min(timeout, HWRM_CMD_MAX_TIMEOUT); - /* convert timeout to usec */ - timeout *= 1000; - - i = 0; - /* Short timeout for the first few iterations: - * number of loops = number of loops for short timeout + - * number of loops for standard timeout. - */ - tmo_count = HWRM_SHORT_TIMEOUT_COUNTER; - timeout = timeout - HWRM_SHORT_MIN_TIMEOUT * HWRM_SHORT_TIMEOUT_COUNTER; - tmo_count += DIV_ROUND_UP(timeout, HWRM_MIN_TIMEOUT); - - if (intr_process) { - u16 seq_id = bp->hwrm_intr_seq_id; - - /* Wait until hwrm response cmpl interrupt is processed */ - while (bp->hwrm_intr_seq_id != (u16)~seq_id && - i++ < tmo_count) { - /* Abort the wait for completion if the FW health - * check has failed. - */ - if (test_bit(BNXT_STATE_FW_FATAL_COND, &bp->state)) - return -EBUSY; - /* on first few passes, just barely sleep */ - if (i < HWRM_SHORT_TIMEOUT_COUNTER) { - usleep_range(HWRM_SHORT_MIN_TIMEOUT, - HWRM_SHORT_MAX_TIMEOUT); - } else { - if (HWRM_WAIT_MUST_ABORT(bp, req)) - break; - usleep_range(HWRM_MIN_TIMEOUT, - HWRM_MAX_TIMEOUT); - } - } - - if (bp->hwrm_intr_seq_id != (u16)~seq_id) { - if (!silent) - netdev_err(bp->dev, "Resp cmpl intr err msg: 0x%x\n", - le16_to_cpu(req->req_type)); - return -EBUSY; - } - len = le16_to_cpu(resp->resp_len); - valid = ((u8 *)resp) + len - 1; - } else { - int j; - - /* Check if response len is updated */ - for (i = 0; i < tmo_count; i++) { - /* Abort the wait for completion if the FW health - * check has failed. - */ - if (test_bit(BNXT_STATE_FW_FATAL_COND, &bp->state)) - return -EBUSY; - len = le16_to_cpu(resp->resp_len); - if (len) - break; - /* on first few passes, just barely sleep */ - if (i < HWRM_SHORT_TIMEOUT_COUNTER) { - usleep_range(HWRM_SHORT_MIN_TIMEOUT, - HWRM_SHORT_MAX_TIMEOUT); - } else { - if (HWRM_WAIT_MUST_ABORT(bp, req)) - goto timeout_abort; - usleep_range(HWRM_MIN_TIMEOUT, - HWRM_MAX_TIMEOUT); - } - } - - if (i >= tmo_count) { -timeout_abort: - if (!silent) - netdev_err(bp->dev, "Error (timeout: %d) msg {0x%x 0x%x} len:%d\n", - HWRM_TOTAL_TIMEOUT(i), - le16_to_cpu(req->req_type), - le16_to_cpu(req->seq_id), len); - return -EBUSY; - } - - /* Last byte of resp contains valid bit */ - valid = ((u8 *)resp) + len - 1; - for (j = 0; j < HWRM_VALID_BIT_DELAY_USEC; j++) { - /* make sure we read from updated DMA memory */ - dma_rmb(); - if (*valid) - break; - usleep_range(1, 5); - } - - if (j >= HWRM_VALID_BIT_DELAY_USEC) { - if (!silent) - netdev_err(bp->dev, "Error (timeout: %d) msg {0x%x 0x%x} len:%d v:%d\n", - HWRM_TOTAL_TIMEOUT(i), - le16_to_cpu(req->req_type), - le16_to_cpu(req->seq_id), len, - *valid); - return -EBUSY; - } - } - - /* Zero valid bit for compatibility. Valid bit in an older spec - * may become a new field in a newer spec. We must make sure that - * a new field not implemented by old spec will read zero. - */ - *valid = 0; - rc = le16_to_cpu(resp->error_code); - if (rc && !silent) - netdev_err(bp->dev, "hwrm req_type 0x%x seq id 0x%x error 0x%x\n", - le16_to_cpu(resp->req_type), - le16_to_cpu(resp->seq_id), rc); - return bnxt_hwrm_to_stderr(rc); -} - -int _hwrm_send_message(struct bnxt *bp, void *msg, u32 msg_len, int timeout) -{ - return bnxt_hwrm_do_send_msg(bp, msg, msg_len, timeout, false); -} - -int _hwrm_send_message_silent(struct bnxt *bp, void *msg, u32 msg_len, - int timeout) -{ - return bnxt_hwrm_do_send_msg(bp, msg, msg_len, timeout, true); -} - -int hwrm_send_message(struct bnxt *bp, void *msg, u32 msg_len, int timeout) -{ - int rc; - - mutex_lock(&bp->hwrm_cmd_lock); - rc = _hwrm_send_message(bp, msg, msg_len, timeout); - mutex_unlock(&bp->hwrm_cmd_lock); - return rc; -} - -int hwrm_send_message_silent(struct bnxt *bp, void *msg, u32 msg_len, - int timeout) -{ - int rc; - - mutex_lock(&bp->hwrm_cmd_lock); - rc = bnxt_hwrm_do_send_msg(bp, msg, msg_len, timeout, true); - mutex_unlock(&bp->hwrm_cmd_lock); - return rc; -} - int bnxt_hwrm_func_drv_rgtr(struct bnxt *bp, unsigned long *bmap, int bmap_size, bool async_only) { -- cgit v1.2.3-59-g8ed1b