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linux-kernel-test/drivers/net/netxen/netxen_nic_init.c
Dhananjay Phadke cb2107be43 netxen: fix tx ring accounting 
This forces every update of tx ring producer to check for
availability of space for next full TSO command. Earlier
firmware control commands didn't care to pause tx queue.

Stop the tx queue if there's not enough space to transmit one full
LSO command left on the tx ring after current transmit. This avoids
returning NETDEV_TX_BUSY after checking distance between producer
and consumer on every cpu.

Restart the tx queue only if we have cleaned up enough tx
descriptors.

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-18 00:46:14 -07:00

1463 lines
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/*
* Copyright (C) 2003 - 2009 NetXen, Inc.
* 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 LICENSE.
*
* Contact Information:
* info@netxen.com
* NetXen Inc,
* 18922 Forge Drive
* Cupertino, CA 95014-0701
*
*/
#include <linux/netdevice.h>
#include <linux/delay.h>
#include "netxen_nic.h"
#include "netxen_nic_hw.h"
#include "netxen_nic_phan_reg.h"
struct crb_addr_pair {
u32 addr;
u32 data;
};
#define NETXEN_MAX_CRB_XFORM 60
static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
#define NETXEN_ADDR_ERROR (0xffffffff)
#define crb_addr_transform(name) \
crb_addr_xform[NETXEN_HW_PX_MAP_CRB_##name] = \
NETXEN_HW_CRB_HUB_AGT_ADR_##name << 20
#define NETXEN_NIC_XDMA_RESET 0x8000ff
static void
netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
struct nx_host_rds_ring *rds_ring);
static void crb_addr_transform_setup(void)
{
crb_addr_transform(XDMA);
crb_addr_transform(TIMR);
crb_addr_transform(SRE);
crb_addr_transform(SQN3);
crb_addr_transform(SQN2);
crb_addr_transform(SQN1);
crb_addr_transform(SQN0);
crb_addr_transform(SQS3);
crb_addr_transform(SQS2);
crb_addr_transform(SQS1);
crb_addr_transform(SQS0);
crb_addr_transform(RPMX7);
crb_addr_transform(RPMX6);
crb_addr_transform(RPMX5);
crb_addr_transform(RPMX4);
crb_addr_transform(RPMX3);
crb_addr_transform(RPMX2);
crb_addr_transform(RPMX1);
crb_addr_transform(RPMX0);
crb_addr_transform(ROMUSB);
crb_addr_transform(SN);
crb_addr_transform(QMN);
crb_addr_transform(QMS);
crb_addr_transform(PGNI);
crb_addr_transform(PGND);
crb_addr_transform(PGN3);
crb_addr_transform(PGN2);
crb_addr_transform(PGN1);
crb_addr_transform(PGN0);
crb_addr_transform(PGSI);
crb_addr_transform(PGSD);
crb_addr_transform(PGS3);
crb_addr_transform(PGS2);
crb_addr_transform(PGS1);
crb_addr_transform(PGS0);
crb_addr_transform(PS);
crb_addr_transform(PH);
crb_addr_transform(NIU);
crb_addr_transform(I2Q);
crb_addr_transform(EG);
crb_addr_transform(MN);
crb_addr_transform(MS);
crb_addr_transform(CAS2);
crb_addr_transform(CAS1);
crb_addr_transform(CAS0);
crb_addr_transform(CAM);
crb_addr_transform(C2C1);
crb_addr_transform(C2C0);
crb_addr_transform(SMB);
crb_addr_transform(OCM0);
crb_addr_transform(I2C0);
}
void netxen_release_rx_buffers(struct netxen_adapter *adapter)
{
struct netxen_recv_context *recv_ctx;
struct nx_host_rds_ring *rds_ring;
struct netxen_rx_buffer *rx_buf;
int i, ring;
recv_ctx = &adapter->recv_ctx;
for (ring = 0; ring < adapter->max_rds_rings; ring++) {
rds_ring = &recv_ctx->rds_rings[ring];
for (i = 0; i < rds_ring->num_desc; ++i) {
rx_buf = &(rds_ring->rx_buf_arr[i]);
if (rx_buf->state == NETXEN_BUFFER_FREE)
continue;
pci_unmap_single(adapter->pdev,
rx_buf->dma,
rds_ring->dma_size,
PCI_DMA_FROMDEVICE);
if (rx_buf->skb != NULL)
dev_kfree_skb_any(rx_buf->skb);
}
}
}
void netxen_release_tx_buffers(struct netxen_adapter *adapter)
{
struct netxen_cmd_buffer *cmd_buf;
struct netxen_skb_frag *buffrag;
int i, j;
struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
cmd_buf = tx_ring->cmd_buf_arr;
for (i = 0; i < tx_ring->num_desc; i++) {
buffrag = cmd_buf->frag_array;
if (buffrag->dma) {
pci_unmap_single(adapter->pdev, buffrag->dma,
buffrag->length, PCI_DMA_TODEVICE);
buffrag->dma = 0ULL;
}
for (j = 0; j < cmd_buf->frag_count; j++) {
buffrag++;
if (buffrag->dma) {
pci_unmap_page(adapter->pdev, buffrag->dma,
buffrag->length,
PCI_DMA_TODEVICE);
buffrag->dma = 0ULL;
}
}
if (cmd_buf->skb) {
dev_kfree_skb_any(cmd_buf->skb);
cmd_buf->skb = NULL;
}
cmd_buf++;
}
}
void netxen_free_sw_resources(struct netxen_adapter *adapter)
{
struct netxen_recv_context *recv_ctx;
struct nx_host_rds_ring *rds_ring;
struct nx_host_tx_ring *tx_ring;
int ring;
recv_ctx = &adapter->recv_ctx;
if (recv_ctx->rds_rings == NULL)
goto skip_rds;
for (ring = 0; ring < adapter->max_rds_rings; ring++) {
rds_ring = &recv_ctx->rds_rings[ring];
vfree(rds_ring->rx_buf_arr);
rds_ring->rx_buf_arr = NULL;
}
kfree(recv_ctx->rds_rings);
skip_rds:
if (adapter->tx_ring == NULL)
return;
tx_ring = adapter->tx_ring;
vfree(tx_ring->cmd_buf_arr);
}
int netxen_alloc_sw_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;
struct netxen_rx_buffer *rx_buf;
int ring, i, size;
struct netxen_cmd_buffer *cmd_buf_arr;
struct net_device *netdev = adapter->netdev;
struct pci_dev *pdev = adapter->pdev;
size = sizeof(struct nx_host_tx_ring);
tx_ring = kzalloc(size, GFP_KERNEL);
if (tx_ring == NULL) {
dev_err(&pdev->dev, "%s: failed to allocate tx ring struct\n",
netdev->name);
return -ENOMEM;
}
adapter->tx_ring = tx_ring;
tx_ring->num_desc = adapter->num_txd;
cmd_buf_arr = vmalloc(TX_BUFF_RINGSIZE(tx_ring));
if (cmd_buf_arr == NULL) {
dev_err(&pdev->dev, "%s: failed to allocate cmd buffer ring\n",
netdev->name);
return -ENOMEM;
}
memset(cmd_buf_arr, 0, TX_BUFF_RINGSIZE(tx_ring));
tx_ring->cmd_buf_arr = cmd_buf_arr;
recv_ctx = &adapter->recv_ctx;
size = adapter->max_rds_rings * sizeof (struct nx_host_rds_ring);
rds_ring = kzalloc(size, GFP_KERNEL);
if (rds_ring == NULL) {
dev_err(&pdev->dev, "%s: failed to allocate rds ring struct\n",
netdev->name);
return -ENOMEM;
}
recv_ctx->rds_rings = rds_ring;
for (ring = 0; ring < adapter->max_rds_rings; ring++) {
rds_ring = &recv_ctx->rds_rings[ring];
switch (ring) {
case RCV_RING_NORMAL:
rds_ring->num_desc = adapter->num_rxd;
if (adapter->ahw.cut_through) {
rds_ring->dma_size =
NX_CT_DEFAULT_RX_BUF_LEN;
rds_ring->skb_size =
NX_CT_DEFAULT_RX_BUF_LEN;
} else {
rds_ring->dma_size = RX_DMA_MAP_LEN;
rds_ring->skb_size =
MAX_RX_BUFFER_LENGTH;
}
break;
case RCV_RING_JUMBO:
rds_ring->num_desc = adapter->num_jumbo_rxd;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
rds_ring->dma_size =
NX_P3_RX_JUMBO_BUF_MAX_LEN;
else
rds_ring->dma_size =
NX_P2_RX_JUMBO_BUF_MAX_LEN;
rds_ring->skb_size =
rds_ring->dma_size + NET_IP_ALIGN;
break;
case RCV_RING_LRO:
rds_ring->num_desc = adapter->num_lro_rxd;
rds_ring->dma_size = RX_LRO_DMA_MAP_LEN;
rds_ring->skb_size = MAX_RX_LRO_BUFFER_LENGTH;
break;
}
rds_ring->rx_buf_arr = (struct netxen_rx_buffer *)
vmalloc(RCV_BUFF_RINGSIZE(rds_ring));
if (rds_ring->rx_buf_arr == NULL) {
printk(KERN_ERR "%s: Failed to allocate "
"rx buffer ring %d\n",
netdev->name, ring);
/* free whatever was already allocated */
goto err_out;
}
memset(rds_ring->rx_buf_arr, 0, RCV_BUFF_RINGSIZE(rds_ring));
INIT_LIST_HEAD(&rds_ring->free_list);
/*
* Now go through all of them, set reference handles
* and put them in the queues.
*/
rx_buf = rds_ring->rx_buf_arr;
for (i = 0; i < rds_ring->num_desc; i++) {
list_add_tail(&rx_buf->list,
&rds_ring->free_list);
rx_buf->ref_handle = i;
rx_buf->state = NETXEN_BUFFER_FREE;
rx_buf++;
}
spin_lock_init(&rds_ring->lock);
}
for (ring = 0; ring < adapter->max_sds_rings; ring++) {
sds_ring = &recv_ctx->sds_rings[ring];
sds_ring->irq = adapter->msix_entries[ring].vector;
sds_ring->adapter = adapter;
sds_ring->num_desc = adapter->num_rxd;
for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
INIT_LIST_HEAD(&sds_ring->free_list[i]);
}
return 0;
err_out:
netxen_free_sw_resources(adapter);
return -ENOMEM;
}
void netxen_initialize_adapter_ops(struct netxen_adapter *adapter)
{
adapter->macaddr_set = netxen_p2_nic_set_mac_addr;
adapter->set_multi = netxen_p2_nic_set_multi;
switch (adapter->ahw.port_type) {
case NETXEN_NIC_GBE:
adapter->enable_phy_interrupts =
netxen_niu_gbe_enable_phy_interrupts;
adapter->disable_phy_interrupts =
netxen_niu_gbe_disable_phy_interrupts;
adapter->set_mtu = netxen_nic_set_mtu_gb;
adapter->set_promisc = netxen_niu_set_promiscuous_mode;
adapter->phy_read = netxen_niu_gbe_phy_read;
adapter->phy_write = netxen_niu_gbe_phy_write;
adapter->init_port = netxen_niu_gbe_init_port;
adapter->stop_port = netxen_niu_disable_gbe_port;
break;
case NETXEN_NIC_XGBE:
adapter->enable_phy_interrupts =
netxen_niu_xgbe_enable_phy_interrupts;
adapter->disable_phy_interrupts =
netxen_niu_xgbe_disable_phy_interrupts;
adapter->set_mtu = netxen_nic_set_mtu_xgb;
adapter->init_port = netxen_niu_xg_init_port;
adapter->set_promisc = netxen_niu_xg_set_promiscuous_mode;
adapter->stop_port = netxen_niu_disable_xg_port;
break;
default:
break;
}
if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
adapter->set_mtu = nx_fw_cmd_set_mtu;
adapter->set_promisc = netxen_p3_nic_set_promisc;
adapter->macaddr_set = netxen_p3_nic_set_mac_addr;
adapter->set_multi = netxen_p3_nic_set_multi;
}
}
/*
* netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
* address to external PCI CRB address.
*/
static u32 netxen_decode_crb_addr(u32 addr)
{
int i;
u32 base_addr, offset, pci_base;
crb_addr_transform_setup();
pci_base = NETXEN_ADDR_ERROR;
base_addr = addr & 0xfff00000;
offset = addr & 0x000fffff;
for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
if (crb_addr_xform[i] == base_addr) {
pci_base = i << 20;
break;
}
}
if (pci_base == NETXEN_ADDR_ERROR)
return pci_base;
else
return (pci_base + offset);
}
static long rom_max_timeout = 100;
static long rom_lock_timeout = 10000;
static int rom_lock(struct netxen_adapter *adapter)
{
int iter;
u32 done = 0;
int timeout = 0;
while (!done) {
/* acquire semaphore2 from PCI HW block */
done = NXRD32(adapter, NETXEN_PCIE_REG(PCIE_SEM2_LOCK));
if (done == 1)
break;
if (timeout >= rom_lock_timeout)
return -EIO;
timeout++;
/*
* Yield CPU
*/
if (!in_atomic())
schedule();
else {
for (iter = 0; iter < 20; iter++)
cpu_relax(); /*This a nop instr on i386 */
}
}
NXWR32(adapter, NETXEN_ROM_LOCK_ID, ROM_LOCK_DRIVER);
return 0;
}
static int netxen_wait_rom_done(struct netxen_adapter *adapter)
{
long timeout = 0;
long done = 0;
cond_resched();
while (done == 0) {
done = NXRD32(adapter, NETXEN_ROMUSB_GLB_STATUS);
done &= 2;
timeout++;
if (timeout >= rom_max_timeout) {
printk("Timeout reached waiting for rom done");
return -EIO;
}
}
return 0;
}
static void netxen_rom_unlock(struct netxen_adapter *adapter)
{
/* release semaphore2 */
NXRD32(adapter, NETXEN_PCIE_REG(PCIE_SEM2_UNLOCK));
}
static int do_rom_fast_read(struct netxen_adapter *adapter,
int addr, int *valp)
{
NXWR32(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
NXWR32(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
if (netxen_wait_rom_done(adapter)) {
printk("Error waiting for rom done\n");
return -EIO;
}
/* reset abyte_cnt and dummy_byte_cnt */
NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
udelay(10);
NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
*valp = NXRD32(adapter, NETXEN_ROMUSB_ROM_RDATA);
return 0;
}
static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
u8 *bytes, size_t size)
{
int addridx;
int ret = 0;
for (addridx = addr; addridx < (addr + size); addridx += 4) {
int v;
ret = do_rom_fast_read(adapter, addridx, &v);
if (ret != 0)
break;
*(__le32 *)bytes = cpu_to_le32(v);
bytes += 4;
}
return ret;
}
int
netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
u8 *bytes, size_t size)
{
int ret;
ret = rom_lock(adapter);
if (ret < 0)
return ret;
ret = do_rom_fast_read_words(adapter, addr, bytes, size);
netxen_rom_unlock(adapter);
return ret;
}
int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
{
int ret;
if (rom_lock(adapter) != 0)
return -EIO;
ret = do_rom_fast_read(adapter, addr, valp);
netxen_rom_unlock(adapter);
return ret;
}
#define NETXEN_BOARDTYPE 0x4008
#define NETXEN_BOARDNUM 0x400c
#define NETXEN_CHIPNUM 0x4010
int netxen_pinit_from_rom(struct netxen_adapter *adapter, int verbose)
{
int addr, val;
int i, n, init_delay = 0;
struct crb_addr_pair *buf;
unsigned offset;
u32 off;
/* resetall */
rom_lock(adapter);
NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0xffffffff);
netxen_rom_unlock(adapter);
if (verbose) {
if (netxen_rom_fast_read(adapter, NETXEN_BOARDTYPE, &val) == 0)
printk("P2 ROM board type: 0x%08x\n", val);
else
printk("Could not read board type\n");
if (netxen_rom_fast_read(adapter, NETXEN_BOARDNUM, &val) == 0)
printk("P2 ROM board num: 0x%08x\n", val);
else
printk("Could not read board number\n");
if (netxen_rom_fast_read(adapter, NETXEN_CHIPNUM, &val) == 0)
printk("P2 ROM chip num: 0x%08x\n", val);
else
printk("Could not read chip number\n");
}
if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
(n != 0xcafecafe) ||
netxen_rom_fast_read(adapter, 4, &n) != 0) {
printk(KERN_ERR "%s: ERROR Reading crb_init area: "
"n: %08x\n", netxen_nic_driver_name, n);
return -EIO;
}
offset = n & 0xffffU;
n = (n >> 16) & 0xffffU;
} else {
if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
!(n & 0x80000000)) {
printk(KERN_ERR "%s: ERROR Reading crb_init area: "
"n: %08x\n", netxen_nic_driver_name, n);
return -EIO;
}
offset = 1;
n &= ~0x80000000;
}
if (n < 1024) {
if (verbose)
printk(KERN_DEBUG "%s: %d CRB init values found"
" in ROM.\n", netxen_nic_driver_name, n);
} else {
printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
" initialized.\n", __func__, n);
return -EIO;
}
buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
if (buf == NULL) {
printk("%s: netxen_pinit_from_rom: Unable to calloc memory.\n",
netxen_nic_driver_name);
return -ENOMEM;
}
for (i = 0; i < n; i++) {
if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
kfree(buf);
return -EIO;
}
buf[i].addr = addr;
buf[i].data = val;
if (verbose)
printk(KERN_DEBUG "%s: PCI: 0x%08x == 0x%08x\n",
netxen_nic_driver_name,
(u32)netxen_decode_crb_addr(addr), val);
}
for (i = 0; i < n; i++) {
off = netxen_decode_crb_addr(buf[i].addr);
if (off == NETXEN_ADDR_ERROR) {
printk(KERN_ERR"CRB init value out of range %x\n",
buf[i].addr);
continue;
}
off += NETXEN_PCI_CRBSPACE;
/* skipping cold reboot MAGIC */
if (off == NETXEN_CAM_RAM(0x1fc))
continue;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
/* do not reset PCI */
if (off == (ROMUSB_GLB + 0xbc))
continue;
if (off == (ROMUSB_GLB + 0xa8))
continue;
if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
continue;
if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
continue;
if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
continue;
if (off == (NETXEN_CRB_PEG_NET_1 + 0x18))
buf[i].data = 0x1020;
/* skip the function enable register */
if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
continue;
if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
continue;
if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
continue;
}
if (off == NETXEN_ADDR_ERROR) {
printk(KERN_ERR "%s: Err: Unknown addr: 0x%08x\n",
netxen_nic_driver_name, buf[i].addr);
continue;
}
init_delay = 1;
/* After writing this register, HW needs time for CRB */
/* to quiet down (else crb_window returns 0xffffffff) */
if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
init_delay = 1000;
if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
/* hold xdma in reset also */
buf[i].data = NETXEN_NIC_XDMA_RESET;
buf[i].data = 0x8000ff;
}
}
NXWR32(adapter, off, buf[i].data);
msleep(init_delay);
}
kfree(buf);
/* disable_peg_cache_all */
/* unreset_net_cache */
if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
val = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
}
/* p2dn replyCount */
NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
/* disable_peg_cache 0 */
NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
/* disable_peg_cache 1 */
NXWR32(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
/* peg_clr_all */
/* peg_clr 0 */
NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
/* peg_clr 1 */
NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
/* peg_clr 2 */
NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
/* peg_clr 3 */
NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
return 0;
}
int
netxen_load_firmware(struct netxen_adapter *adapter)
{
u64 *ptr64;
u32 i, flashaddr, size;
const struct firmware *fw = adapter->fw;
if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 1);
if (fw) {
__le64 data;
size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
ptr64 = (u64 *)&fw->data[NETXEN_BOOTLD_START];
flashaddr = NETXEN_BOOTLD_START;
for (i = 0; i < size; i++) {
data = cpu_to_le64(ptr64[i]);
adapter->pci_mem_write(adapter, flashaddr, &data, 8);
flashaddr += 8;
}
size = *(u32 *)&fw->data[NX_FW_SIZE_OFFSET];
size = (__force u32)cpu_to_le32(size) / 8;
ptr64 = (u64 *)&fw->data[NETXEN_IMAGE_START];
flashaddr = NETXEN_IMAGE_START;
for (i = 0; i < size; i++) {
data = cpu_to_le64(ptr64[i]);
if (adapter->pci_mem_write(adapter,
flashaddr, &data, 8))
return -EIO;
flashaddr += 8;
}
} else {
u32 data;
size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 4;
flashaddr = NETXEN_BOOTLD_START;
for (i = 0; i < size; i++) {
if (netxen_rom_fast_read(adapter,
flashaddr, (int *)&data) != 0)
return -EIO;
if (adapter->pci_mem_write(adapter,
flashaddr, &data, 4))
return -EIO;
flashaddr += 4;
}
}
msleep(1);
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001d);
else {
NXWR32(adapter, NETXEN_ROMUSB_GLB_CHIP_CLK_CTRL, 0x3fff);
NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 0);
}
return 0;
}
static int
netxen_validate_firmware(struct netxen_adapter *adapter, const char *fwname)
{
__le32 val;
u32 major, minor, build, ver, min_ver, bios;
struct pci_dev *pdev = adapter->pdev;
const struct firmware *fw = adapter->fw;
if (fw->size < NX_FW_MIN_SIZE)
return -EINVAL;
val = cpu_to_le32(*(u32 *)&fw->data[NX_FW_MAGIC_OFFSET]);
if ((__force u32)val != NETXEN_BDINFO_MAGIC)
return -EINVAL;
val = cpu_to_le32(*(u32 *)&fw->data[NX_FW_VERSION_OFFSET]);
major = (__force u32)val & 0xff;
minor = ((__force u32)val >> 8) & 0xff;
build = (__force u32)val >> 16;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
min_ver = NETXEN_VERSION_CODE(4, 0, 216);
else
min_ver = NETXEN_VERSION_CODE(3, 4, 216);
ver = NETXEN_VERSION_CODE(major, minor, build);
if ((major > _NETXEN_NIC_LINUX_MAJOR) || (ver < min_ver)) {
dev_err(&pdev->dev,
"%s: firmware version %d.%d.%d unsupported\n",
fwname, major, minor, build);
return -EINVAL;
}
val = cpu_to_le32(*(u32 *)&fw->data[NX_BIOS_VERSION_OFFSET]);
netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios);
if ((__force u32)val != bios) {
dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
fwname);
return -EINVAL;
}
/* check if flashed firmware is newer */
if (netxen_rom_fast_read(adapter,
NX_FW_VERSION_OFFSET, (int *)&val))
return -EIO;
major = (__force u32)val & 0xff;
minor = ((__force u32)val >> 8) & 0xff;
build = (__force u32)val >> 16;
if (NETXEN_VERSION_CODE(major, minor, build) > ver)
return -EINVAL;
NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
return 0;
}
static char *fw_name[] = { "nxromimg.bin", "nx3fwct.bin", "nx3fwmn.bin" };
void netxen_request_firmware(struct netxen_adapter *adapter)
{
u32 capability, flashed_ver;
int fw_type;
struct pci_dev *pdev = adapter->pdev;
int rc = 0;
if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
fw_type = NX_P2_MN_ROMIMAGE;
goto request_fw;
} else {
fw_type = NX_P3_CT_ROMIMAGE;
goto request_fw;
}
request_mn:
capability = 0;
netxen_rom_fast_read(adapter,
NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
if (flashed_ver >= NETXEN_VERSION_CODE(4, 0, 220)) {
capability = NXRD32(adapter, NX_PEG_TUNE_CAPABILITY);
if (capability & NX_PEG_TUNE_MN_PRESENT) {
fw_type = NX_P3_MN_ROMIMAGE;
goto request_fw;
}
}
request_fw:
rc = request_firmware(&adapter->fw, fw_name[fw_type], &pdev->dev);
if (rc != 0) {
if (fw_type == NX_P3_CT_ROMIMAGE) {
msleep(1);
goto request_mn;
}
adapter->fw = NULL;
goto done;
}
rc = netxen_validate_firmware(adapter, fw_name[fw_type]);
if (rc != 0) {
release_firmware(adapter->fw);
if (fw_type == NX_P3_CT_ROMIMAGE) {
msleep(1);
goto request_mn;
}
adapter->fw = NULL;
goto done;
}
done:
if (adapter->fw)
dev_info(&pdev->dev, "loading firmware from file %s\n",
fw_name[fw_type]);
else
dev_info(&pdev->dev, "loading firmware from flash\n");
}
void
netxen_release_firmware(struct netxen_adapter *adapter)
{
if (adapter->fw)
release_firmware(adapter->fw);
}
int netxen_initialize_adapter_offload(struct netxen_adapter *adapter)
{
uint64_t addr;
uint32_t hi;
uint32_t lo;
adapter->dummy_dma.addr =
pci_alloc_consistent(adapter->pdev,
NETXEN_HOST_DUMMY_DMA_SIZE,
&adapter->dummy_dma.phys_addr);
if (adapter->dummy_dma.addr == NULL) {
printk("%s: ERROR: Could not allocate dummy DMA memory\n",
__func__);
return -ENOMEM;
}
addr = (uint64_t) adapter->dummy_dma.phys_addr;
hi = (addr >> 32) & 0xffffffff;
lo = addr & 0xffffffff;
NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
uint32_t temp = 0;
NXWR32(adapter, CRB_HOST_DUMMY_BUF, temp);
}
return 0;
}
void netxen_free_adapter_offload(struct netxen_adapter *adapter)
{
int i = 100;
if (!adapter->dummy_dma.addr)
return;
if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
do {
if (dma_watchdog_shutdown_request(adapter) == 1)
break;
msleep(50);
if (dma_watchdog_shutdown_poll_result(adapter) == 1)
break;
} while (--i);
}
if (i) {
pci_free_consistent(adapter->pdev,
NETXEN_HOST_DUMMY_DMA_SIZE,
adapter->dummy_dma.addr,
adapter->dummy_dma.phys_addr);
adapter->dummy_dma.addr = NULL;
} else {
printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
adapter->netdev->name);
}
}
int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
{
u32 val = 0;
int retries = 60;
if (!pegtune_val) {
do {
val = NXRD32(adapter, CRB_CMDPEG_STATE);
if (val == PHAN_INITIALIZE_COMPLETE ||
val == PHAN_INITIALIZE_ACK)
return 0;
msleep(500);
} while (--retries);
if (!retries) {
pegtune_val = NXRD32(adapter,
NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
printk(KERN_WARNING "netxen_phantom_init: init failed, "
"pegtune_val=%x\n", pegtune_val);
return -1;
}
}
return 0;
}
static int
netxen_receive_peg_ready(struct netxen_adapter *adapter)
{
u32 val = 0;
int retries = 2000;
do {
val = NXRD32(adapter, CRB_RCVPEG_STATE);
if (val == PHAN_PEG_RCV_INITIALIZED)
return 0;
msleep(10);
} while (--retries);
if (!retries) {
printk(KERN_ERR "Receive Peg initialization not "
"complete, state: 0x%x.\n", val);
return -EIO;
}
return 0;
}
int netxen_init_firmware(struct netxen_adapter *adapter)
{
int err;
err = netxen_receive_peg_ready(adapter);
if (err)
return err;
NXWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
NXWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222)) {
adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
}
return err;
}
static void
netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
{
u32 cable_OUI;
u16 cable_len;
u16 link_speed;
u8 link_status, module, duplex, autoneg;
struct net_device *netdev = adapter->netdev;
adapter->has_link_events = 1;
cable_OUI = msg->body[1] & 0xffffffff;
cable_len = (msg->body[1] >> 32) & 0xffff;
link_speed = (msg->body[1] >> 48) & 0xffff;
link_status = msg->body[2] & 0xff;
duplex = (msg->body[2] >> 16) & 0xff;
autoneg = (msg->body[2] >> 24) & 0xff;
module = (msg->body[2] >> 8) & 0xff;
if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
netdev->name, cable_OUI, cable_len);
} else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
printk(KERN_INFO "%s: unsupported cable length %d\n",
netdev->name, cable_len);
}
netxen_advert_link_change(adapter, link_status);
/* update link parameters */
if (duplex == LINKEVENT_FULL_DUPLEX)
adapter->link_duplex = DUPLEX_FULL;
else
adapter->link_duplex = DUPLEX_HALF;
adapter->module_type = module;
adapter->link_autoneg = autoneg;
adapter->link_speed = link_speed;
}
static void
netxen_handle_fw_message(int desc_cnt, int index,
struct nx_host_sds_ring *sds_ring)
{
nx_fw_msg_t msg;
struct status_desc *desc;
int i = 0, opcode;
while (desc_cnt > 0 && i < 8) {
desc = &sds_ring->desc_head[index];
msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
index = get_next_index(index, sds_ring->num_desc);
desc_cnt--;
}
opcode = netxen_get_nic_msg_opcode(msg.body[0]);
switch (opcode) {
case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
netxen_handle_linkevent(sds_ring->adapter, &msg);
break;
default:
break;
}
}
static int
netxen_alloc_rx_skb(struct netxen_adapter *adapter,
struct nx_host_rds_ring *rds_ring,
struct netxen_rx_buffer *buffer)
{
struct sk_buff *skb;
dma_addr_t dma;
struct pci_dev *pdev = adapter->pdev;
buffer->skb = dev_alloc_skb(rds_ring->skb_size);
if (!buffer->skb)
return 1;
skb = buffer->skb;
if (!adapter->ahw.cut_through)
skb_reserve(skb, 2);
dma = pci_map_single(pdev, skb->data,
rds_ring->dma_size, PCI_DMA_FROMDEVICE);
if (pci_dma_mapping_error(pdev, dma)) {
dev_kfree_skb_any(skb);
buffer->skb = NULL;
return 1;
}
buffer->skb = skb;
buffer->dma = dma;
buffer->state = NETXEN_BUFFER_BUSY;
return 0;
}
static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
{
struct netxen_rx_buffer *buffer;
struct sk_buff *skb;
buffer = &rds_ring->rx_buf_arr[index];
pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
PCI_DMA_FROMDEVICE);
skb = buffer->skb;
if (!skb)
goto no_skb;
if (likely(adapter->rx_csum && cksum == STATUS_CKSUM_OK)) {
adapter->stats.csummed++;
skb->ip_summed = CHECKSUM_UNNECESSARY;
} else
skb->ip_summed = CHECKSUM_NONE;
skb->dev = adapter->netdev;
buffer->skb = NULL;
no_skb:
buffer->state = NETXEN_BUFFER_FREE;
return skb;
}
static struct netxen_rx_buffer *
netxen_process_rcv(struct netxen_adapter *adapter,
int ring, int index, int length, int cksum, int pkt_offset,
struct nx_host_sds_ring *sds_ring)
{
struct net_device *netdev = adapter->netdev;
struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
struct netxen_rx_buffer *buffer;
struct sk_buff *skb;
struct nx_host_rds_ring *rds_ring = &recv_ctx->rds_rings[ring];
if (unlikely(index > rds_ring->num_desc))
return NULL;
buffer = &rds_ring->rx_buf_arr[index];
skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
if (!skb)
return buffer;
if (length > rds_ring->skb_size)
skb_put(skb, rds_ring->skb_size);
else
skb_put(skb, length);
if (pkt_offset)
skb_pull(skb, pkt_offset);
skb->protocol = eth_type_trans(skb, netdev);
napi_gro_receive(&sds_ring->napi, skb);
adapter->stats.no_rcv++;
adapter->stats.rxbytes += length;
return buffer;
}
#define netxen_merge_rx_buffers(list, head) \
do { list_splice_tail_init(list, head); } while (0);
int
netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
{
struct netxen_adapter *adapter = sds_ring->adapter;
struct list_head *cur;
struct status_desc *desc;
struct netxen_rx_buffer *rxbuf;
u32 consumer = sds_ring->consumer;
int count = 0;
u64 sts_data;
int opcode, ring, index, length, cksum, pkt_offset, desc_cnt;
while (count < max) {
desc = &sds_ring->desc_head[consumer];
sts_data = le64_to_cpu(desc->status_desc_data[0]);
if (!(sts_data & STATUS_OWNER_HOST))
break;
desc_cnt = netxen_get_sts_desc_cnt(sts_data);
ring = netxen_get_sts_type(sts_data);
if (ring > RCV_RING_JUMBO)
goto skip;
opcode = netxen_get_sts_opcode(sts_data);
switch (opcode) {
case NETXEN_NIC_RXPKT_DESC:
case NETXEN_OLD_RXPKT_DESC:
break;
case NETXEN_NIC_RESPONSE_DESC:
netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
default:
goto skip;
}
WARN_ON(desc_cnt > 1);
index = netxen_get_sts_refhandle(sts_data);
length = netxen_get_sts_totallength(sts_data);
cksum = netxen_get_sts_status(sts_data);
pkt_offset = netxen_get_sts_pkt_offset(sts_data);
rxbuf = netxen_process_rcv(adapter, ring, index,
length, cksum, pkt_offset, sds_ring);
if (rxbuf)
list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
skip:
for (; desc_cnt > 0; desc_cnt--) {
desc = &sds_ring->desc_head[consumer];
desc->status_desc_data[0] =
cpu_to_le64(STATUS_OWNER_PHANTOM);
consumer = get_next_index(consumer, sds_ring->num_desc);
}
count++;
}
for (ring = 0; ring < adapter->max_rds_rings; ring++) {
struct nx_host_rds_ring *rds_ring =
&adapter->recv_ctx.rds_rings[ring];
if (!list_empty(&sds_ring->free_list[ring])) {
list_for_each(cur, &sds_ring->free_list[ring]) {
rxbuf = list_entry(cur,
struct netxen_rx_buffer, list);
netxen_alloc_rx_skb(adapter, rds_ring, rxbuf);
}
spin_lock(&rds_ring->lock);
netxen_merge_rx_buffers(&sds_ring->free_list[ring],
&rds_ring->free_list);
spin_unlock(&rds_ring->lock);
}
netxen_post_rx_buffers_nodb(adapter, rds_ring);
}
if (count) {
sds_ring->consumer = consumer;
NXWR32(adapter, sds_ring->crb_sts_consumer, consumer);
}
return count;
}
/* Process Command status ring */
int netxen_process_cmd_ring(struct netxen_adapter *adapter)
{
u32 sw_consumer, hw_consumer;
int count = 0, i;
struct netxen_cmd_buffer *buffer;
struct pci_dev *pdev = adapter->pdev;
struct net_device *netdev = adapter->netdev;
struct netxen_skb_frag *frag;
int done = 0;
struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
if (!spin_trylock(&adapter->tx_clean_lock))
return 1;
sw_consumer = tx_ring->sw_consumer;
hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
while (sw_consumer != hw_consumer) {
buffer = &tx_ring->cmd_buf_arr[sw_consumer];
if (buffer->skb) {
frag = &buffer->frag_array[0];
pci_unmap_single(pdev, frag->dma, frag->length,
PCI_DMA_TODEVICE);
frag->dma = 0ULL;
for (i = 1; i < buffer->frag_count; i++) {
frag++; /* Get the next frag */
pci_unmap_page(pdev, frag->dma, frag->length,
PCI_DMA_TODEVICE);
frag->dma = 0ULL;
}
adapter->stats.xmitfinished++;
dev_kfree_skb_any(buffer->skb);
buffer->skb = NULL;
}
sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
if (++count >= MAX_STATUS_HANDLE)
break;
}
if (count && netif_running(netdev)) {
tx_ring->sw_consumer = sw_consumer;
smp_mb();
if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
netif_tx_lock(netdev);
if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
netif_wake_queue(netdev);
netif_tx_unlock(netdev);
}
}
/*
* If everything is freed up to consumer then check if the ring is full
* If the ring is full then check if more needs to be freed and
* schedule the call back again.
*
* This happens when there are 2 CPUs. One could be freeing and the
* other filling it. If the ring is full when we get out of here and
* the card has already interrupted the host then the host can miss the
* interrupt.
*
* There is still a possible race condition and the host could miss an
* interrupt. The card has to take care of this.
*/
hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
done = (sw_consumer == hw_consumer);
spin_unlock(&adapter->tx_clean_lock);
return (done);
}
void
netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
struct nx_host_rds_ring *rds_ring)
{
struct rcv_desc *pdesc;
struct netxen_rx_buffer *buffer;
int producer, count = 0;
netxen_ctx_msg msg = 0;
struct list_head *head;
producer = rds_ring->producer;
spin_lock(&rds_ring->lock);
head = &rds_ring->free_list;
while (!list_empty(head)) {
buffer = list_entry(head->next, struct netxen_rx_buffer, list);
if (!buffer->skb) {
if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
break;
}
count++;
list_del(&buffer->list);
/* make a rcv descriptor */
pdesc = &rds_ring->desc_head[producer];
pdesc->addr_buffer = cpu_to_le64(buffer->dma);
pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
producer = get_next_index(producer, rds_ring->num_desc);
}
spin_unlock(&rds_ring->lock);
if (count) {
rds_ring->producer = producer;
NXWR32(adapter, rds_ring->crb_rcv_producer,
(producer-1) & (rds_ring->num_desc-1));
if (adapter->fw_major < 4) {
/*
* Write a doorbell msg to tell phanmon of change in
* receive ring producer
* Only for firmware version < 4.0.0
*/
netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
netxen_set_msg_privid(msg);
netxen_set_msg_count(msg,
((producer - 1) &
(rds_ring->num_desc - 1)));
netxen_set_msg_ctxid(msg, adapter->portnum);
netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
writel(msg,
DB_NORMALIZE(adapter,
NETXEN_RCV_PRODUCER_OFFSET));
}
}
}
static void
netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
struct nx_host_rds_ring *rds_ring)
{
struct rcv_desc *pdesc;
struct netxen_rx_buffer *buffer;
int producer, count = 0;
struct list_head *head;
producer = rds_ring->producer;
if (!spin_trylock(&rds_ring->lock))
return;
head = &rds_ring->free_list;
while (!list_empty(head)) {
buffer = list_entry(head->next, struct netxen_rx_buffer, list);
if (!buffer->skb) {
if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
break;
}
count++;
list_del(&buffer->list);
/* make a rcv descriptor */
pdesc = &rds_ring->desc_head[producer];
pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
pdesc->addr_buffer = cpu_to_le64(buffer->dma);
producer = get_next_index(producer, rds_ring->num_desc);
}
if (count) {
rds_ring->producer = producer;
NXWR32(adapter, rds_ring->crb_rcv_producer,
(producer - 1) & (rds_ring->num_desc - 1));
}
spin_unlock(&rds_ring->lock);
}
void netxen_nic_clear_stats(struct netxen_adapter *adapter)
{
memset(&adapter->stats, 0, sizeof(adapter->stats));
return;
}
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