qlcnic: Qlogic ethernet driver for CNA devices
o 1G/10G Ethernet Driver for Qlgic QLE8240 and QLE8242 CNA devices.
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/qlcnic/qlcnic_ctx.c b/drivers/net/qlcnic/qlcnic_ctx.c
new file mode 100644
index 0000000..71c16a1
--- /dev/null
+++ b/drivers/net/qlcnic/qlcnic_ctx.c
@@ -0,0 +1,536 @@
+/*
+ * Copyright (C) 2009 - QLogic Corporation.
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called "COPYING".
+ *
+ */
+
+#include "qlcnic.h"
+
+#define QLCHAL_VERSION 1
+
+static u32
+qlcnic_poll_rsp(struct qlcnic_adapter *adapter)
+{
+ u32 rsp;
+ int timeout = 0;
+
+ do {
+ /* give atleast 1ms for firmware to respond */
+ msleep(1);
+
+ if (++timeout > QLCNIC_OS_CRB_RETRY_COUNT)
+ return QLCNIC_CDRP_RSP_TIMEOUT;
+
+ rsp = QLCRD32(adapter, QLCNIC_CDRP_CRB_OFFSET);
+ } while (!QLCNIC_CDRP_IS_RSP(rsp));
+
+ return rsp;
+}
+
+static u32
+qlcnic_issue_cmd(struct qlcnic_adapter *adapter,
+ u32 pci_fn, u32 version, u32 arg1, u32 arg2, u32 arg3, u32 cmd)
+{
+ u32 rsp;
+ u32 signature;
+ u32 rcode = QLCNIC_RCODE_SUCCESS;
+ struct pci_dev *pdev = adapter->pdev;
+
+ signature = QLCNIC_CDRP_SIGNATURE_MAKE(pci_fn, version);
+
+ /* Acquire semaphore before accessing CRB */
+ if (qlcnic_api_lock(adapter))
+ return QLCNIC_RCODE_TIMEOUT;
+
+ QLCWR32(adapter, QLCNIC_SIGN_CRB_OFFSET, signature);
+ QLCWR32(adapter, QLCNIC_ARG1_CRB_OFFSET, arg1);
+ QLCWR32(adapter, QLCNIC_ARG2_CRB_OFFSET, arg2);
+ QLCWR32(adapter, QLCNIC_ARG3_CRB_OFFSET, arg3);
+ QLCWR32(adapter, QLCNIC_CDRP_CRB_OFFSET, QLCNIC_CDRP_FORM_CMD(cmd));
+
+ rsp = qlcnic_poll_rsp(adapter);
+
+ if (rsp == QLCNIC_CDRP_RSP_TIMEOUT) {
+ dev_err(&pdev->dev, "card response timeout.\n");
+ rcode = QLCNIC_RCODE_TIMEOUT;
+ } else if (rsp == QLCNIC_CDRP_RSP_FAIL) {
+ rcode = QLCRD32(adapter, QLCNIC_ARG1_CRB_OFFSET);
+ dev_err(&pdev->dev, "failed card response code:0x%x\n",
+ rcode);
+ }
+
+ /* Release semaphore */
+ qlcnic_api_unlock(adapter);
+
+ return rcode;
+}
+
+int
+qlcnic_fw_cmd_set_mtu(struct qlcnic_adapter *adapter, int mtu)
+{
+ struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
+
+ if (recv_ctx->state == QLCNIC_HOST_CTX_STATE_ACTIVE) {
+ if (qlcnic_issue_cmd(adapter,
+ adapter->ahw.pci_func,
+ QLCHAL_VERSION,
+ recv_ctx->context_id,
+ mtu,
+ 0,
+ QLCNIC_CDRP_CMD_SET_MTU)) {
+
+ dev_err(&adapter->pdev->dev, "Failed to set mtu\n");
+ return -EIO;
+ }
+ }
+
+ return 0;
+}
+
+static int
+qlcnic_fw_cmd_create_rx_ctx(struct qlcnic_adapter *adapter)
+{
+ void *addr;
+ struct qlcnic_hostrq_rx_ctx *prq;
+ struct qlcnic_cardrsp_rx_ctx *prsp;
+ struct qlcnic_hostrq_rds_ring *prq_rds;
+ struct qlcnic_hostrq_sds_ring *prq_sds;
+ struct qlcnic_cardrsp_rds_ring *prsp_rds;
+ struct qlcnic_cardrsp_sds_ring *prsp_sds;
+ struct qlcnic_host_rds_ring *rds_ring;
+ struct qlcnic_host_sds_ring *sds_ring;
+
+ dma_addr_t hostrq_phys_addr, cardrsp_phys_addr;
+ u64 phys_addr;
+
+ int i, nrds_rings, nsds_rings;
+ size_t rq_size, rsp_size;
+ u32 cap, reg, val;
+ int err;
+
+ struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
+
+ nrds_rings = adapter->max_rds_rings;
+ nsds_rings = adapter->max_sds_rings;
+
+ rq_size =
+ SIZEOF_HOSTRQ_RX(struct qlcnic_hostrq_rx_ctx, nrds_rings,
+ nsds_rings);
+ rsp_size =
+ SIZEOF_CARDRSP_RX(struct qlcnic_cardrsp_rx_ctx, nrds_rings,
+ nsds_rings);
+
+ addr = pci_alloc_consistent(adapter->pdev,
+ rq_size, &hostrq_phys_addr);
+ if (addr == NULL)
+ return -ENOMEM;
+ prq = (struct qlcnic_hostrq_rx_ctx *)addr;
+
+ addr = pci_alloc_consistent(adapter->pdev,
+ rsp_size, &cardrsp_phys_addr);
+ if (addr == NULL) {
+ err = -ENOMEM;
+ goto out_free_rq;
+ }
+ prsp = (struct qlcnic_cardrsp_rx_ctx *)addr;
+
+ prq->host_rsp_dma_addr = cpu_to_le64(cardrsp_phys_addr);
+
+ cap = (QLCNIC_CAP0_LEGACY_CONTEXT | QLCNIC_CAP0_LEGACY_MN);
+ cap |= (QLCNIC_CAP0_JUMBO_CONTIGUOUS | QLCNIC_CAP0_LRO_CONTIGUOUS);
+
+ prq->capabilities[0] = cpu_to_le32(cap);
+ prq->host_int_crb_mode =
+ cpu_to_le32(QLCNIC_HOST_INT_CRB_MODE_SHARED);
+ prq->host_rds_crb_mode =
+ cpu_to_le32(QLCNIC_HOST_RDS_CRB_MODE_UNIQUE);
+
+ prq->num_rds_rings = cpu_to_le16(nrds_rings);
+ prq->num_sds_rings = cpu_to_le16(nsds_rings);
+ prq->rds_ring_offset = cpu_to_le32(0);
+
+ val = le32_to_cpu(prq->rds_ring_offset) +
+ (sizeof(struct qlcnic_hostrq_rds_ring) * nrds_rings);
+ prq->sds_ring_offset = cpu_to_le32(val);
+
+ prq_rds = (struct qlcnic_hostrq_rds_ring *)(prq->data +
+ le32_to_cpu(prq->rds_ring_offset));
+
+ for (i = 0; i < nrds_rings; i++) {
+
+ rds_ring = &recv_ctx->rds_rings[i];
+
+ prq_rds[i].host_phys_addr = cpu_to_le64(rds_ring->phys_addr);
+ prq_rds[i].ring_size = cpu_to_le32(rds_ring->num_desc);
+ prq_rds[i].ring_kind = cpu_to_le32(i);
+ prq_rds[i].buff_size = cpu_to_le64(rds_ring->dma_size);
+ }
+
+ prq_sds = (struct qlcnic_hostrq_sds_ring *)(prq->data +
+ le32_to_cpu(prq->sds_ring_offset));
+
+ for (i = 0; i < nsds_rings; i++) {
+
+ sds_ring = &recv_ctx->sds_rings[i];
+
+ prq_sds[i].host_phys_addr = cpu_to_le64(sds_ring->phys_addr);
+ prq_sds[i].ring_size = cpu_to_le32(sds_ring->num_desc);
+ prq_sds[i].msi_index = cpu_to_le16(i);
+ }
+
+ phys_addr = hostrq_phys_addr;
+ err = qlcnic_issue_cmd(adapter,
+ adapter->ahw.pci_func,
+ QLCHAL_VERSION,
+ (u32)(phys_addr >> 32),
+ (u32)(phys_addr & 0xffffffff),
+ rq_size,
+ QLCNIC_CDRP_CMD_CREATE_RX_CTX);
+ if (err) {
+ dev_err(&adapter->pdev->dev,
+ "Failed to create rx ctx in firmware%d\n", err);
+ goto out_free_rsp;
+ }
+
+
+ prsp_rds = ((struct qlcnic_cardrsp_rds_ring *)
+ &prsp->data[le32_to_cpu(prsp->rds_ring_offset)]);
+
+ for (i = 0; i < le16_to_cpu(prsp->num_rds_rings); i++) {
+ rds_ring = &recv_ctx->rds_rings[i];
+
+ reg = le32_to_cpu(prsp_rds[i].host_producer_crb);
+ rds_ring->crb_rcv_producer = qlcnic_get_ioaddr(adapter,
+ QLCNIC_REG(reg - 0x200));
+ }
+
+ prsp_sds = ((struct qlcnic_cardrsp_sds_ring *)
+ &prsp->data[le32_to_cpu(prsp->sds_ring_offset)]);
+
+ for (i = 0; i < le16_to_cpu(prsp->num_sds_rings); i++) {
+ sds_ring = &recv_ctx->sds_rings[i];
+
+ reg = le32_to_cpu(prsp_sds[i].host_consumer_crb);
+ sds_ring->crb_sts_consumer = qlcnic_get_ioaddr(adapter,
+ QLCNIC_REG(reg - 0x200));
+
+ reg = le32_to_cpu(prsp_sds[i].interrupt_crb);
+ sds_ring->crb_intr_mask = qlcnic_get_ioaddr(adapter,
+ QLCNIC_REG(reg - 0x200));
+ }
+
+ recv_ctx->state = le32_to_cpu(prsp->host_ctx_state);
+ recv_ctx->context_id = le16_to_cpu(prsp->context_id);
+ recv_ctx->virt_port = prsp->virt_port;
+
+out_free_rsp:
+ pci_free_consistent(adapter->pdev, rsp_size, prsp, cardrsp_phys_addr);
+out_free_rq:
+ pci_free_consistent(adapter->pdev, rq_size, prq, hostrq_phys_addr);
+ return err;
+}
+
+static void
+qlcnic_fw_cmd_destroy_rx_ctx(struct qlcnic_adapter *adapter)
+{
+ struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
+
+ if (qlcnic_issue_cmd(adapter,
+ adapter->ahw.pci_func,
+ QLCHAL_VERSION,
+ recv_ctx->context_id,
+ QLCNIC_DESTROY_CTX_RESET,
+ 0,
+ QLCNIC_CDRP_CMD_DESTROY_RX_CTX)) {
+
+ dev_err(&adapter->pdev->dev,
+ "Failed to destroy rx ctx in firmware\n");
+ }
+}
+
+static int
+qlcnic_fw_cmd_create_tx_ctx(struct qlcnic_adapter *adapter)
+{
+ struct qlcnic_hostrq_tx_ctx *prq;
+ struct qlcnic_hostrq_cds_ring *prq_cds;
+ struct qlcnic_cardrsp_tx_ctx *prsp;
+ void *rq_addr, *rsp_addr;
+ size_t rq_size, rsp_size;
+ u32 temp;
+ int err;
+ u64 phys_addr;
+ dma_addr_t rq_phys_addr, rsp_phys_addr;
+ struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
+
+ rq_size = SIZEOF_HOSTRQ_TX(struct qlcnic_hostrq_tx_ctx);
+ rq_addr = pci_alloc_consistent(adapter->pdev,
+ rq_size, &rq_phys_addr);
+ if (!rq_addr)
+ return -ENOMEM;
+
+ rsp_size = SIZEOF_CARDRSP_TX(struct qlcnic_cardrsp_tx_ctx);
+ rsp_addr = pci_alloc_consistent(adapter->pdev,
+ rsp_size, &rsp_phys_addr);
+ if (!rsp_addr) {
+ err = -ENOMEM;
+ goto out_free_rq;
+ }
+
+ memset(rq_addr, 0, rq_size);
+ prq = (struct qlcnic_hostrq_tx_ctx *)rq_addr;
+
+ memset(rsp_addr, 0, rsp_size);
+ prsp = (struct qlcnic_cardrsp_tx_ctx *)rsp_addr;
+
+ prq->host_rsp_dma_addr = cpu_to_le64(rsp_phys_addr);
+
+ temp = (QLCNIC_CAP0_LEGACY_CONTEXT | QLCNIC_CAP0_LEGACY_MN |
+ QLCNIC_CAP0_LSO);
+ prq->capabilities[0] = cpu_to_le32(temp);
+
+ prq->host_int_crb_mode =
+ cpu_to_le32(QLCNIC_HOST_INT_CRB_MODE_SHARED);
+
+ prq->interrupt_ctl = 0;
+ prq->msi_index = 0;
+ prq->cmd_cons_dma_addr = cpu_to_le64(tx_ring->hw_cons_phys_addr);
+
+ prq_cds = &prq->cds_ring;
+
+ prq_cds->host_phys_addr = cpu_to_le64(tx_ring->phys_addr);
+ prq_cds->ring_size = cpu_to_le32(tx_ring->num_desc);
+
+ phys_addr = rq_phys_addr;
+ err = qlcnic_issue_cmd(adapter,
+ adapter->ahw.pci_func,
+ QLCHAL_VERSION,
+ (u32)(phys_addr >> 32),
+ ((u32)phys_addr & 0xffffffff),
+ rq_size,
+ QLCNIC_CDRP_CMD_CREATE_TX_CTX);
+
+ if (err == QLCNIC_RCODE_SUCCESS) {
+ temp = le32_to_cpu(prsp->cds_ring.host_producer_crb);
+ tx_ring->crb_cmd_producer = qlcnic_get_ioaddr(adapter,
+ QLCNIC_REG(temp - 0x200));
+
+ adapter->tx_context_id =
+ le16_to_cpu(prsp->context_id);
+ } else {
+ dev_err(&adapter->pdev->dev,
+ "Failed to create tx ctx in firmware%d\n", err);
+ err = -EIO;
+ }
+
+ pci_free_consistent(adapter->pdev, rsp_size, rsp_addr, rsp_phys_addr);
+
+out_free_rq:
+ pci_free_consistent(adapter->pdev, rq_size, rq_addr, rq_phys_addr);
+
+ return err;
+}
+
+static void
+qlcnic_fw_cmd_destroy_tx_ctx(struct qlcnic_adapter *adapter)
+{
+ if (qlcnic_issue_cmd(adapter,
+ adapter->ahw.pci_func,
+ QLCHAL_VERSION,
+ adapter->tx_context_id,
+ QLCNIC_DESTROY_CTX_RESET,
+ 0,
+ QLCNIC_CDRP_CMD_DESTROY_TX_CTX)) {
+
+ dev_err(&adapter->pdev->dev,
+ "Failed to destroy tx ctx in firmware\n");
+ }
+}
+
+int
+qlcnic_fw_cmd_query_phy(struct qlcnic_adapter *adapter, u32 reg, u32 *val)
+{
+
+ if (qlcnic_issue_cmd(adapter,
+ adapter->ahw.pci_func,
+ QLCHAL_VERSION,
+ reg,
+ 0,
+ 0,
+ QLCNIC_CDRP_CMD_READ_PHY)) {
+
+ return -EIO;
+ }
+
+ return QLCRD32(adapter, QLCNIC_ARG1_CRB_OFFSET);
+}
+
+int
+qlcnic_fw_cmd_set_phy(struct qlcnic_adapter *adapter, u32 reg, u32 val)
+{
+ return qlcnic_issue_cmd(adapter,
+ adapter->ahw.pci_func,
+ QLCHAL_VERSION,
+ reg,
+ val,
+ 0,
+ QLCNIC_CDRP_CMD_WRITE_PHY);
+}
+
+int qlcnic_alloc_hw_resources(struct qlcnic_adapter *adapter)
+{
+ void *addr;
+ int err;
+ int ring;
+ struct qlcnic_recv_context *recv_ctx;
+ struct qlcnic_host_rds_ring *rds_ring;
+ struct qlcnic_host_sds_ring *sds_ring;
+ struct qlcnic_host_tx_ring *tx_ring;
+
+ struct pci_dev *pdev = adapter->pdev;
+
+ recv_ctx = &adapter->recv_ctx;
+ tx_ring = adapter->tx_ring;
+
+ tx_ring->hw_consumer = (__le32 *)pci_alloc_consistent(pdev, sizeof(u32),
+ &tx_ring->hw_cons_phys_addr);
+ if (tx_ring->hw_consumer == NULL) {
+ dev_err(&pdev->dev, "failed to allocate tx consumer\n");
+ return -ENOMEM;
+ }
+ *(tx_ring->hw_consumer) = 0;
+
+ /* cmd desc ring */
+ addr = pci_alloc_consistent(pdev, TX_DESC_RINGSIZE(tx_ring),
+ &tx_ring->phys_addr);
+
+ if (addr == NULL) {
+ dev_err(&pdev->dev, "failed to allocate tx desc ring\n");
+ return -ENOMEM;
+ }
+
+ tx_ring->desc_head = (struct cmd_desc_type0 *)addr;
+
+ for (ring = 0; ring < adapter->max_rds_rings; ring++) {
+ rds_ring = &recv_ctx->rds_rings[ring];
+ addr = pci_alloc_consistent(adapter->pdev,
+ RCV_DESC_RINGSIZE(rds_ring),
+ &rds_ring->phys_addr);
+ if (addr == NULL) {
+ dev_err(&pdev->dev,
+ "failed to allocate rds ring [%d]\n", ring);
+ err = -ENOMEM;
+ goto err_out_free;
+ }
+ rds_ring->desc_head = (struct rcv_desc *)addr;
+
+ }
+
+ for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+ sds_ring = &recv_ctx->sds_rings[ring];
+
+ addr = pci_alloc_consistent(adapter->pdev,
+ STATUS_DESC_RINGSIZE(sds_ring),
+ &sds_ring->phys_addr);
+ if (addr == NULL) {
+ dev_err(&pdev->dev,
+ "failed to allocate sds ring [%d]\n", ring);
+ err = -ENOMEM;
+ goto err_out_free;
+ }
+ sds_ring->desc_head = (struct status_desc *)addr;
+ }
+
+
+ err = qlcnic_fw_cmd_create_rx_ctx(adapter);
+ if (err)
+ goto err_out_free;
+ err = qlcnic_fw_cmd_create_tx_ctx(adapter);
+ if (err)
+ goto err_out_free;
+
+ set_bit(__QLCNIC_FW_ATTACHED, &adapter->state);
+ return 0;
+
+err_out_free:
+ qlcnic_free_hw_resources(adapter);
+ return err;
+}
+
+void qlcnic_free_hw_resources(struct qlcnic_adapter *adapter)
+{
+ struct qlcnic_recv_context *recv_ctx;
+ struct qlcnic_host_rds_ring *rds_ring;
+ struct qlcnic_host_sds_ring *sds_ring;
+ struct qlcnic_host_tx_ring *tx_ring;
+ int ring;
+
+
+ if (test_and_clear_bit(__QLCNIC_FW_ATTACHED, &adapter->state)) {
+ qlcnic_fw_cmd_destroy_rx_ctx(adapter);
+ qlcnic_fw_cmd_destroy_tx_ctx(adapter);
+
+ /* Allow dma queues to drain after context reset */
+ msleep(20);
+ }
+
+ recv_ctx = &adapter->recv_ctx;
+
+ tx_ring = adapter->tx_ring;
+ if (tx_ring->hw_consumer != NULL) {
+ pci_free_consistent(adapter->pdev,
+ sizeof(u32),
+ tx_ring->hw_consumer,
+ tx_ring->hw_cons_phys_addr);
+ tx_ring->hw_consumer = NULL;
+ }
+
+ if (tx_ring->desc_head != NULL) {
+ pci_free_consistent(adapter->pdev,
+ TX_DESC_RINGSIZE(tx_ring),
+ tx_ring->desc_head, tx_ring->phys_addr);
+ tx_ring->desc_head = NULL;
+ }
+
+ for (ring = 0; ring < adapter->max_rds_rings; ring++) {
+ rds_ring = &recv_ctx->rds_rings[ring];
+
+ if (rds_ring->desc_head != NULL) {
+ pci_free_consistent(adapter->pdev,
+ RCV_DESC_RINGSIZE(rds_ring),
+ rds_ring->desc_head,
+ rds_ring->phys_addr);
+ rds_ring->desc_head = NULL;
+ }
+ }
+
+ for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+ sds_ring = &recv_ctx->sds_rings[ring];
+
+ if (sds_ring->desc_head != NULL) {
+ pci_free_consistent(adapter->pdev,
+ STATUS_DESC_RINGSIZE(sds_ring),
+ sds_ring->desc_head,
+ sds_ring->phys_addr);
+ sds_ring->desc_head = NULL;
+ }
+ }
+}
+