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linux/drivers/net/ethernet/qlogic/netxen/netxen_nic_ctx.c
Rajesh Borundia 01da0c2b03 netxen_nic: Fix estimation of recv MSS in case of LRO 
o Linux stack estimates MSS from skb->len or skb_shinfo(skb)->gso_size.
In case of LRO skb->len is aggregate of len of number of packets hence MSS
obtained using skb->len would be incorrect. Incorrect estimation of recv MSS
would lead to delayed acks in some traffic patterns (which sends two or three
packets and wait for ack and only then send remaining packets). This leads to
drop in performance. Hence we need to set gso_size to MSS obtained from firmware.

o This is fixed recently in firmware hence the MSS is obtained based on
capability. If fw is capable of sending the MSS then only driver sets the gso_size.

Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-09 22:53:04 -04:00

948 lines
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/*
* Copyright (C) 2003 - 2009 NetXen, Inc.
* 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 "netxen_nic_hw.h"
#include "netxen_nic.h"
#define NXHAL_VERSION 1
static u32
netxen_poll_rsp(struct netxen_adapter *adapter)
{
u32 rsp = NX_CDRP_RSP_OK;
int timeout = 0;
do {
/* give atleast 1ms for firmware to respond */
msleep(1);
if (++timeout > NX_OS_CRB_RETRY_COUNT)
return NX_CDRP_RSP_TIMEOUT;
rsp = NXRD32(adapter, NX_CDRP_CRB_OFFSET);
} while (!NX_CDRP_IS_RSP(rsp));
return rsp;
}
static u32
netxen_issue_cmd(struct netxen_adapter *adapter, struct netxen_cmd_args *cmd)
{
u32 rsp;
u32 signature = 0;
u32 rcode = NX_RCODE_SUCCESS;
signature = NX_CDRP_SIGNATURE_MAKE(adapter->ahw.pci_func,
NXHAL_VERSION);
/* Acquire semaphore before accessing CRB */
if (netxen_api_lock(adapter))
return NX_RCODE_TIMEOUT;
NXWR32(adapter, NX_SIGN_CRB_OFFSET, signature);
NXWR32(adapter, NX_ARG1_CRB_OFFSET, cmd->req.arg1);
NXWR32(adapter, NX_ARG2_CRB_OFFSET, cmd->req.arg2);
NXWR32(adapter, NX_ARG3_CRB_OFFSET, cmd->req.arg3);
NXWR32(adapter, NX_CDRP_CRB_OFFSET, NX_CDRP_FORM_CMD(cmd->req.cmd));
rsp = netxen_poll_rsp(adapter);
if (rsp == NX_CDRP_RSP_TIMEOUT) {
printk(KERN_ERR "%s: card response timeout.\n",
netxen_nic_driver_name);
rcode = NX_RCODE_TIMEOUT;
} else if (rsp == NX_CDRP_RSP_FAIL) {
rcode = NXRD32(adapter, NX_ARG1_CRB_OFFSET);
printk(KERN_ERR "%s: failed card response code:0x%x\n",
netxen_nic_driver_name, rcode);
} else if (rsp == NX_CDRP_RSP_OK) {
cmd->rsp.cmd = NX_RCODE_SUCCESS;
if (cmd->rsp.arg2)
cmd->rsp.arg2 = NXRD32(adapter, NX_ARG2_CRB_OFFSET);
if (cmd->rsp.arg3)
cmd->rsp.arg3 = NXRD32(adapter, NX_ARG3_CRB_OFFSET);
}
if (cmd->rsp.arg1)
cmd->rsp.arg1 = NXRD32(adapter, NX_ARG1_CRB_OFFSET);
/* Release semaphore */
netxen_api_unlock(adapter);
return rcode;
}
static int
netxen_get_minidump_template_size(struct netxen_adapter *adapter)
{
struct netxen_cmd_args cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.req.cmd = NX_CDRP_CMD_TEMP_SIZE;
memset(&cmd.rsp, 1, sizeof(struct _cdrp_cmd));
netxen_issue_cmd(adapter, &cmd);
if (cmd.rsp.cmd != NX_RCODE_SUCCESS) {
dev_info(&adapter->pdev->dev,
"Can't get template size %d\n", cmd.rsp.cmd);
return -EIO;
}
adapter->mdump.md_template_size = cmd.rsp.arg2;
adapter->mdump.md_template_ver = cmd.rsp.arg3;
return 0;
}
static int
netxen_get_minidump_template(struct netxen_adapter *adapter)
{
dma_addr_t md_template_addr;
void *addr;
u32 size;
struct netxen_cmd_args cmd;
size = adapter->mdump.md_template_size;
if (size == 0) {
dev_err(&adapter->pdev->dev, "Can not capture Minidump "
"template. Invalid template size.\n");
return NX_RCODE_INVALID_ARGS;
}
addr = pci_alloc_consistent(adapter->pdev, size, &md_template_addr);
if (!addr) {
dev_err(&adapter->pdev->dev, "Unable to allocate dmable memory for template.\n");
return -ENOMEM;
}
memset(addr, 0, size);
memset(&cmd, 0, sizeof(cmd));
memset(&cmd.rsp, 1, sizeof(struct _cdrp_cmd));
cmd.req.cmd = NX_CDRP_CMD_GET_TEMP_HDR;
cmd.req.arg1 = LSD(md_template_addr);
cmd.req.arg2 = MSD(md_template_addr);
cmd.req.arg3 |= size;
netxen_issue_cmd(adapter, &cmd);
if ((cmd.rsp.cmd == NX_RCODE_SUCCESS) && (size == cmd.rsp.arg2)) {
memcpy(adapter->mdump.md_template, addr, size);
} else {
dev_err(&adapter->pdev->dev, "Failed to get minidump template, "
"err_code : %d, requested_size : %d, actual_size : %d\n ",
cmd.rsp.cmd, size, cmd.rsp.arg2);
}
pci_free_consistent(adapter->pdev, size, addr, md_template_addr);
return 0;
}
static u32
netxen_check_template_checksum(struct netxen_adapter *adapter)
{
u64 sum = 0 ;
u32 *buff = adapter->mdump.md_template;
int count = adapter->mdump.md_template_size/sizeof(uint32_t) ;
while (count-- > 0)
sum += *buff++ ;
while (sum >> 32)
sum = (sum & 0xFFFFFFFF) + (sum >> 32) ;
return ~sum;
}
int
netxen_setup_minidump(struct netxen_adapter *adapter)
{
int err = 0, i;
u32 *template, *tmp_buf;
struct netxen_minidump_template_hdr *hdr;
err = netxen_get_minidump_template_size(adapter);
if (err) {
adapter->mdump.fw_supports_md = 0;
if ((err == NX_RCODE_CMD_INVALID) ||
(err == NX_RCODE_CMD_NOT_IMPL)) {
dev_info(&adapter->pdev->dev,
"Flashed firmware version does not support minidump, "
"minimum version required is [ %u.%u.%u ].\n ",
NX_MD_SUPPORT_MAJOR, NX_MD_SUPPORT_MINOR,
NX_MD_SUPPORT_SUBVERSION);
}
return err;
}
if (!adapter->mdump.md_template_size) {
dev_err(&adapter->pdev->dev, "Error : Invalid template size "
",should be non-zero.\n");
return -EIO;
}
adapter->mdump.md_template =
kmalloc(adapter->mdump.md_template_size, GFP_KERNEL);
if (!adapter->mdump.md_template) {
dev_err(&adapter->pdev->dev, "Unable to allocate memory "
"for minidump template.\n");
return -ENOMEM;
}
err = netxen_get_minidump_template(adapter);
if (err) {
if (err == NX_RCODE_CMD_NOT_IMPL)
adapter->mdump.fw_supports_md = 0;
goto free_template;
}
if (netxen_check_template_checksum(adapter)) {
dev_err(&adapter->pdev->dev, "Minidump template checksum Error\n");
err = -EIO;
goto free_template;
}
adapter->mdump.md_capture_mask = NX_DUMP_MASK_DEF;
tmp_buf = (u32 *) adapter->mdump.md_template;
template = (u32 *) adapter->mdump.md_template;
for (i = 0; i < adapter->mdump.md_template_size/sizeof(u32); i++)
*template++ = __le32_to_cpu(*tmp_buf++);
hdr = (struct netxen_minidump_template_hdr *)
adapter->mdump.md_template;
adapter->mdump.md_capture_buff = NULL;
adapter->mdump.fw_supports_md = 1;
adapter->mdump.md_enabled = 0;
return err;
free_template:
kfree(adapter->mdump.md_template);
adapter->mdump.md_template = NULL;
return err;
}
int
nx_fw_cmd_set_mtu(struct netxen_adapter *adapter, int mtu)
{
u32 rcode = NX_RCODE_SUCCESS;
struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
struct netxen_cmd_args cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.req.cmd = NX_CDRP_CMD_SET_MTU;
cmd.req.arg1 = recv_ctx->context_id;
cmd.req.arg2 = mtu;
cmd.req.arg3 = 0;
if (recv_ctx->state == NX_HOST_CTX_STATE_ACTIVE)
netxen_issue_cmd(adapter, &cmd);
if (rcode != NX_RCODE_SUCCESS)
return -EIO;
return 0;
}
int
nx_fw_cmd_set_gbe_port(struct netxen_adapter *adapter,
u32 speed, u32 duplex, u32 autoneg)
{
struct netxen_cmd_args cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.req.cmd = NX_CDRP_CMD_CONFIG_GBE_PORT;
cmd.req.arg1 = speed;
cmd.req.arg2 = duplex;
cmd.req.arg3 = autoneg;
return netxen_issue_cmd(adapter, &cmd);
}
static int
nx_fw_cmd_create_rx_ctx(struct netxen_adapter *adapter)
{
void *addr;
nx_hostrq_rx_ctx_t *prq;
nx_cardrsp_rx_ctx_t *prsp;
nx_hostrq_rds_ring_t *prq_rds;
nx_hostrq_sds_ring_t *prq_sds;
nx_cardrsp_rds_ring_t *prsp_rds;
nx_cardrsp_sds_ring_t *prsp_sds;
struct nx_host_rds_ring *rds_ring;
struct nx_host_sds_ring *sds_ring;
struct netxen_cmd_args cmd;
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 netxen_recv_context *recv_ctx = &adapter->recv_ctx;
nrds_rings = adapter->max_rds_rings;
nsds_rings = adapter->max_sds_rings;
rq_size =
SIZEOF_HOSTRQ_RX(nx_hostrq_rx_ctx_t, nrds_rings, nsds_rings);
rsp_size =
SIZEOF_CARDRSP_RX(nx_cardrsp_rx_ctx_t, nrds_rings, nsds_rings);
addr = pci_alloc_consistent(adapter->pdev,
rq_size, &hostrq_phys_addr);
if (addr == NULL)
return -ENOMEM;
prq = addr;
addr = pci_alloc_consistent(adapter->pdev,
rsp_size, &cardrsp_phys_addr);
if (addr == NULL) {
err = -ENOMEM;
goto out_free_rq;
}
prsp = addr;
prq->host_rsp_dma_addr = cpu_to_le64(cardrsp_phys_addr);
cap = (NX_CAP0_LEGACY_CONTEXT | NX_CAP0_LEGACY_MN);
cap |= (NX_CAP0_JUMBO_CONTIGUOUS | NX_CAP0_LRO_CONTIGUOUS);
if (adapter->flags & NETXEN_FW_MSS_CAP)
cap |= NX_CAP0_HW_LRO_MSS;
prq->capabilities[0] = cpu_to_le32(cap);
prq->host_int_crb_mode =
cpu_to_le32(NX_HOST_INT_CRB_MODE_SHARED);
prq->host_rds_crb_mode =
cpu_to_le32(NX_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(nx_hostrq_rds_ring_t) * nrds_rings);
prq->sds_ring_offset = cpu_to_le32(val);
prq_rds = (nx_hostrq_rds_ring_t *)(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 = (nx_hostrq_sds_ring_t *)(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;
memset(&cmd, 0, sizeof(cmd));
cmd.req.arg1 = (u32)(phys_addr >> 32);
cmd.req.arg2 = (u32)(phys_addr & 0xffffffff);
cmd.req.arg3 = rq_size;
cmd.req.cmd = NX_CDRP_CMD_CREATE_RX_CTX;
err = netxen_issue_cmd(adapter, &cmd);
if (err) {
printk(KERN_WARNING
"Failed to create rx ctx in firmware%d\n", err);
goto out_free_rsp;
}
prsp_rds = ((nx_cardrsp_rds_ring_t *)
&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 = netxen_get_ioaddr(adapter,
NETXEN_NIC_REG(reg - 0x200));
}
prsp_sds = ((nx_cardrsp_sds_ring_t *)
&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 = netxen_get_ioaddr(adapter,
NETXEN_NIC_REG(reg - 0x200));
reg = le32_to_cpu(prsp_sds[i].interrupt_crb);
sds_ring->crb_intr_mask = netxen_get_ioaddr(adapter,
NETXEN_NIC_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
nx_fw_cmd_destroy_rx_ctx(struct netxen_adapter *adapter)
{
struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
struct netxen_cmd_args cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.req.arg1 = recv_ctx->context_id;
cmd.req.arg2 = NX_DESTROY_CTX_RESET;
cmd.req.arg3 = 0;
cmd.req.cmd = NX_CDRP_CMD_DESTROY_RX_CTX;
if (netxen_issue_cmd(adapter, &cmd)) {
printk(KERN_WARNING
"%s: Failed to destroy rx ctx in firmware\n",
netxen_nic_driver_name);
}
}
static int
nx_fw_cmd_create_tx_ctx(struct netxen_adapter *adapter)
{
nx_hostrq_tx_ctx_t *prq;
nx_hostrq_cds_ring_t *prq_cds;
nx_cardrsp_tx_ctx_t *prsp;
void *rq_addr, *rsp_addr;
size_t rq_size, rsp_size;
u32 temp;
int err = 0;
u64 offset, phys_addr;
dma_addr_t rq_phys_addr, rsp_phys_addr;
struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
struct netxen_cmd_args cmd;
rq_size = SIZEOF_HOSTRQ_TX(nx_hostrq_tx_ctx_t);
rq_addr = pci_alloc_consistent(adapter->pdev,
rq_size, &rq_phys_addr);
if (!rq_addr)
return -ENOMEM;
rsp_size = SIZEOF_CARDRSP_TX(nx_cardrsp_tx_ctx_t);
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 = rq_addr;
memset(rsp_addr, 0, rsp_size);
prsp = rsp_addr;
prq->host_rsp_dma_addr = cpu_to_le64(rsp_phys_addr);
temp = (NX_CAP0_LEGACY_CONTEXT | NX_CAP0_LEGACY_MN | NX_CAP0_LSO);
prq->capabilities[0] = cpu_to_le32(temp);
prq->host_int_crb_mode =
cpu_to_le32(NX_HOST_INT_CRB_MODE_SHARED);
prq->interrupt_ctl = 0;
prq->msi_index = 0;
prq->dummy_dma_addr = cpu_to_le64(adapter->dummy_dma.phys_addr);
offset = recv_ctx->phys_addr + sizeof(struct netxen_ring_ctx);
prq->cmd_cons_dma_addr = cpu_to_le64(offset);
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;
memset(&cmd, 0, sizeof(cmd));
cmd.req.arg1 = (u32)(phys_addr >> 32);
cmd.req.arg2 = ((u32)phys_addr & 0xffffffff);
cmd.req.arg3 = rq_size;
cmd.req.cmd = NX_CDRP_CMD_CREATE_TX_CTX;
err = netxen_issue_cmd(adapter, &cmd);
if (err == NX_RCODE_SUCCESS) {
temp = le32_to_cpu(prsp->cds_ring.host_producer_crb);
tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
NETXEN_NIC_REG(temp - 0x200));
#if 0
adapter->tx_state =
le32_to_cpu(prsp->host_ctx_state);
#endif
adapter->tx_context_id =
le16_to_cpu(prsp->context_id);
} else {
printk(KERN_WARNING
"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
nx_fw_cmd_destroy_tx_ctx(struct netxen_adapter *adapter)
{
struct netxen_cmd_args cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.req.arg1 = adapter->tx_context_id;
cmd.req.arg2 = NX_DESTROY_CTX_RESET;
cmd.req.arg3 = 0;
cmd.req.cmd = NX_CDRP_CMD_DESTROY_TX_CTX;
if (netxen_issue_cmd(adapter, &cmd)) {
printk(KERN_WARNING
"%s: Failed to destroy tx ctx in firmware\n",
netxen_nic_driver_name);
}
}
int
nx_fw_cmd_query_phy(struct netxen_adapter *adapter, u32 reg, u32 *val)
{
u32 rcode;
struct netxen_cmd_args cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.req.arg1 = reg;
cmd.req.arg2 = 0;
cmd.req.arg3 = 0;
cmd.req.cmd = NX_CDRP_CMD_READ_PHY;
cmd.rsp.arg1 = 1;
rcode = netxen_issue_cmd(adapter, &cmd);
if (rcode != NX_RCODE_SUCCESS)
return -EIO;
if (val == NULL)
return -EIO;
*val = cmd.rsp.arg1;
return 0;
}
int
nx_fw_cmd_set_phy(struct netxen_adapter *adapter, u32 reg, u32 val)
{
u32 rcode;
struct netxen_cmd_args cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.req.arg1 = reg;
cmd.req.arg2 = val;
cmd.req.arg3 = 0;
cmd.req.cmd = NX_CDRP_CMD_WRITE_PHY;
rcode = netxen_issue_cmd(adapter, &cmd);
if (rcode != NX_RCODE_SUCCESS)
return -EIO;
return 0;
}
static u64 ctx_addr_sig_regs[][3] = {
{NETXEN_NIC_REG(0x188), NETXEN_NIC_REG(0x18c), NETXEN_NIC_REG(0x1c0)},
{NETXEN_NIC_REG(0x190), NETXEN_NIC_REG(0x194), NETXEN_NIC_REG(0x1c4)},
{NETXEN_NIC_REG(0x198), NETXEN_NIC_REG(0x19c), NETXEN_NIC_REG(0x1c8)},
{NETXEN_NIC_REG(0x1a0), NETXEN_NIC_REG(0x1a4), NETXEN_NIC_REG(0x1cc)}
};
#define CRB_CTX_ADDR_REG_LO(FUNC_ID) (ctx_addr_sig_regs[FUNC_ID][0])
#define CRB_CTX_ADDR_REG_HI(FUNC_ID) (ctx_addr_sig_regs[FUNC_ID][2])
#define CRB_CTX_SIGNATURE_REG(FUNC_ID) (ctx_addr_sig_regs[FUNC_ID][1])
#define lower32(x) ((u32)((x) & 0xffffffff))
#define upper32(x) ((u32)(((u64)(x) >> 32) & 0xffffffff))
static struct netxen_recv_crb recv_crb_registers[] = {
/* Instance 0 */
{
/* crb_rcv_producer: */
{
NETXEN_NIC_REG(0x100),
/* Jumbo frames */
NETXEN_NIC_REG(0x110),
/* LRO */
NETXEN_NIC_REG(0x120)
},
/* crb_sts_consumer: */
{
NETXEN_NIC_REG(0x138),
NETXEN_NIC_REG_2(0x000),
NETXEN_NIC_REG_2(0x004),
NETXEN_NIC_REG_2(0x008),
},
/* sw_int_mask */
{
CRB_SW_INT_MASK_0,
NETXEN_NIC_REG_2(0x044),
NETXEN_NIC_REG_2(0x048),
NETXEN_NIC_REG_2(0x04c),
},
},
/* Instance 1 */
{
/* crb_rcv_producer: */
{
NETXEN_NIC_REG(0x144),
/* Jumbo frames */
NETXEN_NIC_REG(0x154),
/* LRO */
NETXEN_NIC_REG(0x164)
},
/* crb_sts_consumer: */
{
NETXEN_NIC_REG(0x17c),
NETXEN_NIC_REG_2(0x020),
NETXEN_NIC_REG_2(0x024),
NETXEN_NIC_REG_2(0x028),
},
/* sw_int_mask */
{
CRB_SW_INT_MASK_1,
NETXEN_NIC_REG_2(0x064),
NETXEN_NIC_REG_2(0x068),
NETXEN_NIC_REG_2(0x06c),
},
},
/* Instance 2 */
{
/* crb_rcv_producer: */
{
NETXEN_NIC_REG(0x1d8),
/* Jumbo frames */
NETXEN_NIC_REG(0x1f8),
/* LRO */
NETXEN_NIC_REG(0x208)
},
/* crb_sts_consumer: */
{
NETXEN_NIC_REG(0x220),
NETXEN_NIC_REG_2(0x03c),
NETXEN_NIC_REG_2(0x03c),
NETXEN_NIC_REG_2(0x03c),
},
/* sw_int_mask */
{
CRB_SW_INT_MASK_2,
NETXEN_NIC_REG_2(0x03c),
NETXEN_NIC_REG_2(0x03c),
NETXEN_NIC_REG_2(0x03c),
},
},
/* Instance 3 */
{
/* crb_rcv_producer: */
{
NETXEN_NIC_REG(0x22c),
/* Jumbo frames */
NETXEN_NIC_REG(0x23c),
/* LRO */
NETXEN_NIC_REG(0x24c)
},
/* crb_sts_consumer: */
{
NETXEN_NIC_REG(0x264),
NETXEN_NIC_REG_2(0x03c),
NETXEN_NIC_REG_2(0x03c),
NETXEN_NIC_REG_2(0x03c),
},
/* sw_int_mask */
{
CRB_SW_INT_MASK_3,
NETXEN_NIC_REG_2(0x03c),
NETXEN_NIC_REG_2(0x03c),
NETXEN_NIC_REG_2(0x03c),
},
},
};
static int
netxen_init_old_ctx(struct netxen_adapter *adapter)
{
struct netxen_recv_context *recv_ctx;
struct nx_host_rds_ring *rds_ring;
struct nx_host_sds_ring *sds_ring;
struct nx_host_tx_ring *tx_ring;
int ring;
int port = adapter->portnum;
struct netxen_ring_ctx *hwctx;
u32 signature;
tx_ring = adapter->tx_ring;
recv_ctx = &adapter->recv_ctx;
hwctx = recv_ctx->hwctx;
hwctx->cmd_ring_addr = cpu_to_le64(tx_ring->phys_addr);
hwctx->cmd_ring_size = cpu_to_le32(tx_ring->num_desc);
for (ring = 0; ring < adapter->max_rds_rings; ring++) {
rds_ring = &recv_ctx->rds_rings[ring];
hwctx->rcv_rings[ring].addr =
cpu_to_le64(rds_ring->phys_addr);
hwctx->rcv_rings[ring].size =
cpu_to_le32(rds_ring->num_desc);
}
for (ring = 0; ring < adapter->max_sds_rings; ring++) {
sds_ring = &recv_ctx->sds_rings[ring];
if (ring == 0) {
hwctx->sts_ring_addr = cpu_to_le64(sds_ring->phys_addr);
hwctx->sts_ring_size = cpu_to_le32(sds_ring->num_desc);
}
hwctx->sts_rings[ring].addr = cpu_to_le64(sds_ring->phys_addr);
hwctx->sts_rings[ring].size = cpu_to_le32(sds_ring->num_desc);
hwctx->sts_rings[ring].msi_index = cpu_to_le16(ring);
}
hwctx->sts_ring_count = cpu_to_le32(adapter->max_sds_rings);
signature = (adapter->max_sds_rings > 1) ?
NETXEN_CTX_SIGNATURE_V2 : NETXEN_CTX_SIGNATURE;
NXWR32(adapter, CRB_CTX_ADDR_REG_LO(port),
lower32(recv_ctx->phys_addr));
NXWR32(adapter, CRB_CTX_ADDR_REG_HI(port),
upper32(recv_ctx->phys_addr));
NXWR32(adapter, CRB_CTX_SIGNATURE_REG(port),
signature | port);
return 0;
}
int netxen_alloc_hw_resources(struct netxen_adapter *adapter)
{
void *addr;
int err = 0;
int ring;
struct netxen_recv_context *recv_ctx;
struct nx_host_rds_ring *rds_ring;
struct nx_host_sds_ring *sds_ring;
struct nx_host_tx_ring *tx_ring;
struct pci_dev *pdev = adapter->pdev;
struct net_device *netdev = adapter->netdev;
int port = adapter->portnum;
recv_ctx = &adapter->recv_ctx;
tx_ring = adapter->tx_ring;
addr = pci_alloc_consistent(pdev,
sizeof(struct netxen_ring_ctx) + sizeof(uint32_t),
&recv_ctx->phys_addr);
if (addr == NULL) {
dev_err(&pdev->dev, "failed to allocate hw context\n");
return -ENOMEM;
}
memset(addr, 0, sizeof(struct netxen_ring_ctx));
recv_ctx->hwctx = addr;
recv_ctx->hwctx->ctx_id = cpu_to_le32(port);
recv_ctx->hwctx->cmd_consumer_offset =
cpu_to_le64(recv_ctx->phys_addr +
sizeof(struct netxen_ring_ctx));
tx_ring->hw_consumer =
(__le32 *)(((char *)addr) + sizeof(struct netxen_ring_ctx));
/* cmd desc ring */
addr = pci_alloc_consistent(pdev, TX_DESC_RINGSIZE(tx_ring),
&tx_ring->phys_addr);
if (addr == NULL) {
dev_err(&pdev->dev, "%s: failed to allocate tx desc ring\n",
netdev->name);
err = -ENOMEM;
goto err_out_free;
}
tx_ring->desc_head = 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,
"%s: failed to allocate rds ring [%d]\n",
netdev->name, ring);
err = -ENOMEM;
goto err_out_free;
}
rds_ring->desc_head = addr;
if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
rds_ring->crb_rcv_producer =
netxen_get_ioaddr(adapter,
recv_crb_registers[port].crb_rcv_producer[ring]);
}
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,
"%s: failed to allocate sds ring [%d]\n",
netdev->name, ring);
err = -ENOMEM;
goto err_out_free;
}
sds_ring->desc_head = addr;
if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
sds_ring->crb_sts_consumer =
netxen_get_ioaddr(adapter,
recv_crb_registers[port].crb_sts_consumer[ring]);
sds_ring->crb_intr_mask =
netxen_get_ioaddr(adapter,
recv_crb_registers[port].sw_int_mask[ring]);
}
}
if (!NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
if (test_and_set_bit(__NX_FW_ATTACHED, &adapter->state))
goto done;
err = nx_fw_cmd_create_rx_ctx(adapter);
if (err)
goto err_out_free;
err = nx_fw_cmd_create_tx_ctx(adapter);
if (err)
goto err_out_free;
} else {
err = netxen_init_old_ctx(adapter);
if (err)
goto err_out_free;
}
done:
return 0;
err_out_free:
netxen_free_hw_resources(adapter);
return err;
}
void netxen_free_hw_resources(struct netxen_adapter *adapter)
{
struct netxen_recv_context *recv_ctx;
struct nx_host_rds_ring *rds_ring;
struct nx_host_sds_ring *sds_ring;
struct nx_host_tx_ring *tx_ring;
int ring;
int port = adapter->portnum;
if (!NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
if (!test_and_clear_bit(__NX_FW_ATTACHED, &adapter->state))
goto done;
nx_fw_cmd_destroy_rx_ctx(adapter);
nx_fw_cmd_destroy_tx_ctx(adapter);
} else {
netxen_api_lock(adapter);
NXWR32(adapter, CRB_CTX_SIGNATURE_REG(port),
NETXEN_CTX_D3_RESET | port);
netxen_api_unlock(adapter);
}
/* Allow dma queues to drain after context reset */
msleep(20);
done:
recv_ctx = &adapter->recv_ctx;
if (recv_ctx->hwctx != NULL) {
pci_free_consistent(adapter->pdev,
sizeof(struct netxen_ring_ctx) +
sizeof(uint32_t),
recv_ctx->hwctx,
recv_ctx->phys_addr);
recv_ctx->hwctx = NULL;
}
tx_ring = adapter->tx_ring;
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;
}
}
}
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