From 26f3a021b37ccca6c76c8c7c90ff684f8468e350 Mon Sep 17 00:00:00 2001 From: Carl Huang Date: Fri, 14 Aug 2020 10:10:26 +0300 Subject: ath11k: allocate smaller chunks of memory for firmware On x86 it's sometimes difficult to allocate a large contigous DMA memory, so instead allocate blocks of small chunk memory. In ath11k_qmi_msg_mem_request_cb() the error handling was cleaned up to avoid an unused variable warning. Also changed the test from (ret < 0) to just (ret) as the functions don't return any positive values. Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1 Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.1.0.1-01238-QCAHKSWPL_SILICONZ-2 Signed-off-by: Carl Huang Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/1597389030-13887-8-git-send-email-kvalo@codeaurora.org --- drivers/net/wireless/ath/ath11k/qmi.c | 42 +++++++++++++++++++++++++---------- 1 file changed, 30 insertions(+), 12 deletions(-) (limited to 'drivers/net/wireless/ath/ath11k/qmi.c') diff --git a/drivers/net/wireless/ath/ath11k/qmi.c b/drivers/net/wireless/ath/ath11k/qmi.c index acf7a3f2fe77..b386ab4bd806 100644 --- a/drivers/net/wireless/ath/ath11k/qmi.c +++ b/drivers/net/wireless/ath/ath11k/qmi.c @@ -1640,19 +1640,30 @@ static int ath11k_qmi_respond_fw_mem_request(struct ath11k_base *ab) memset(&resp, 0, sizeof(resp)); - req->mem_seg_len = ab->qmi.mem_seg_count; + /* For QCA6390 by default FW requests a block of ~4M contiguous + * DMA memory, it's hard to allocate from OS. So host returns + * failure to FW and FW will then request mulitple blocks of small + * chunk size memory. + */ + if (!ab->bus_params.fixed_mem_region && ab->qmi.mem_seg_count <= 2) { + ath11k_dbg(ab, ATH11K_DBG_QMI, "qmi delays mem_request %d\n", + ab->qmi.mem_seg_count); + memset(req, 0, sizeof(*req)); + } else { + req->mem_seg_len = ab->qmi.mem_seg_count; + + for (i = 0; i < req->mem_seg_len ; i++) { + req->mem_seg[i].addr = ab->qmi.target_mem[i].paddr; + req->mem_seg[i].size = ab->qmi.target_mem[i].size; + req->mem_seg[i].type = ab->qmi.target_mem[i].type; + } + } ret = qmi_txn_init(&ab->qmi.handle, &txn, qmi_wlanfw_respond_mem_resp_msg_v01_ei, &resp); if (ret < 0) goto out; - for (i = 0; i < req->mem_seg_len ; i++) { - req->mem_seg[i].addr = ab->qmi.target_mem[i].paddr; - req->mem_seg[i].size = ab->qmi.target_mem[i].size; - req->mem_seg[i].type = ab->qmi.target_mem[i].type; - } - ret = qmi_send_request(&ab->qmi.handle, NULL, &txn, QMI_WLANFW_RESPOND_MEM_REQ_V01, QMI_WLANFW_RESPOND_MEM_REQ_MSG_V01_MAX_LEN, @@ -2411,13 +2422,20 @@ static void ath11k_qmi_msg_mem_request_cb(struct qmi_handle *qmi_hdl, msg->mem_seg[i].type, msg->mem_seg[i].size); } - if (ab->bus_params.fixed_mem_region) + if (ab->bus_params.fixed_mem_region) { ret = ath11k_qmi_assign_target_mem_chunk(ab); - else + if (ret) { + ath11k_warn(ab, "qmi failed to assign target memory: %d\n", + ret); + return; + } + } else if (msg->mem_seg_len > 2) { ret = ath11k_qmi_alloc_target_mem_chunk(ab); - if (ret < 0) { - ath11k_warn(ab, "qmi failed to alloc target memory:%d\n", ret); - return; + if (ret) { + ath11k_warn(ab, "qmi failed to alloc target memory: %d\n", + ret); + return; + } } ath11k_qmi_driver_event_post(qmi, ATH11K_QMI_EVENT_REQUEST_MEM, NULL); -- cgit v1.2.3