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linux/drivers/net/qlcnic/qlcnic_init.c
Anirban Chakraborty 2e9d722db6 qlcnic: NIC Partitioning - Add basic infrastructure support 
Following changes have been added to enable the adapter to work in
NIC partitioning mode where multiple PCI functions of an adapter port can
be configured to work as NIC functions. The first function that is enumerated on
the PCI bus assumes the role of management function which, besides being able
to do all the NIC functionality, can configure other NIC partitions. Other NIC
functions can be configured as privileged or non privileged functions.
Privileged function can not configure other NIC functions but can do all the
NIC functionality including any firmware initialization, chip reset etc. Non
privileged functions can do only basic IO. For chip reset etc, it depends on the
privilege or management function.

1. Added code to determine PCI function number independent of kernel API.
2. Added Driver - FW version 2.0 support.
3. Changed producer and consumer register offset calculation.
4. Added management and privileged operation modes for npar functions. A module
 parameter has been added to control it.
5. Added support for configuring the eswitch in the adapter.

Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-02 02:24:03 -07:00

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/*
* 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 <linux/netdevice.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include "qlcnic.h"
struct crb_addr_pair {
u32 addr;
u32 data;
};
#define QLCNIC_MAX_CRB_XFORM 60
static unsigned int crb_addr_xform[QLCNIC_MAX_CRB_XFORM];
#define crb_addr_transform(name) \
(crb_addr_xform[QLCNIC_HW_PX_MAP_CRB_##name] = \
QLCNIC_HW_CRB_HUB_AGT_ADR_##name << 20)
#define QLCNIC_ADDR_ERROR (0xffffffff)
static void
qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
struct qlcnic_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 qlcnic_release_rx_buffers(struct qlcnic_adapter *adapter)
{
struct qlcnic_recv_context *recv_ctx;
struct qlcnic_host_rds_ring *rds_ring;
struct qlcnic_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 == QLCNIC_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 qlcnic_release_tx_buffers(struct qlcnic_adapter *adapter)
{
struct qlcnic_cmd_buffer *cmd_buf;
struct qlcnic_skb_frag *buffrag;
int i, j;
struct qlcnic_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 qlcnic_free_sw_resources(struct qlcnic_adapter *adapter)
{
struct qlcnic_recv_context *recv_ctx;
struct qlcnic_host_rds_ring *rds_ring;
struct qlcnic_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);
kfree(adapter->tx_ring);
}
int qlcnic_alloc_sw_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;
struct qlcnic_rx_buffer *rx_buf;
int ring, i, size;
struct qlcnic_cmd_buffer *cmd_buf_arr;
struct net_device *netdev = adapter->netdev;
size = sizeof(struct qlcnic_host_tx_ring);
tx_ring = kzalloc(size, GFP_KERNEL);
if (tx_ring == NULL) {
dev_err(&netdev->dev, "failed to allocate tx ring struct\n");
return -ENOMEM;
}
adapter->tx_ring = tx_ring;
tx_ring->num_desc = adapter->num_txd;
tx_ring->txq = netdev_get_tx_queue(netdev, 0);
cmd_buf_arr = vmalloc(TX_BUFF_RINGSIZE(tx_ring));
if (cmd_buf_arr == NULL) {
dev_err(&netdev->dev, "failed to allocate cmd buffer ring\n");
goto err_out;
}
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 qlcnic_host_rds_ring);
rds_ring = kzalloc(size, GFP_KERNEL);
if (rds_ring == NULL) {
dev_err(&netdev->dev, "failed to allocate rds ring struct\n");
goto err_out;
}
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;
rds_ring->dma_size = QLCNIC_P3_RX_BUF_MAX_LEN;
rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN;
break;
case RCV_RING_JUMBO:
rds_ring->num_desc = adapter->num_jumbo_rxd;
rds_ring->dma_size =
QLCNIC_P3_RX_JUMBO_BUF_MAX_LEN;
if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
rds_ring->dma_size += QLCNIC_LRO_BUFFER_EXTRA;
rds_ring->skb_size =
rds_ring->dma_size + NET_IP_ALIGN;
break;
}
rds_ring->rx_buf_arr = (struct qlcnic_rx_buffer *)
vmalloc(RCV_BUFF_RINGSIZE(rds_ring));
if (rds_ring->rx_buf_arr == NULL) {
dev_err(&netdev->dev, "Failed to allocate "
"rx buffer ring %d\n", ring);
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 = QLCNIC_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:
qlcnic_free_sw_resources(adapter);
return -ENOMEM;
}
/*
* Utility to translate from internal Phantom CRB address
* to external PCI CRB address.
*/
static u32 qlcnic_decode_crb_addr(u32 addr)
{
int i;
u32 base_addr, offset, pci_base;
crb_addr_transform_setup();
pci_base = QLCNIC_ADDR_ERROR;
base_addr = addr & 0xfff00000;
offset = addr & 0x000fffff;
for (i = 0; i < QLCNIC_MAX_CRB_XFORM; i++) {
if (crb_addr_xform[i] == base_addr) {
pci_base = i << 20;
break;
}
}
if (pci_base == QLCNIC_ADDR_ERROR)
return pci_base;
else
return pci_base + offset;
}
#define QLCNIC_MAX_ROM_WAIT_USEC 100
static int qlcnic_wait_rom_done(struct qlcnic_adapter *adapter)
{
long timeout = 0;
long done = 0;
cond_resched();
while (done == 0) {
done = QLCRD32(adapter, QLCNIC_ROMUSB_GLB_STATUS);
done &= 2;
if (++timeout >= QLCNIC_MAX_ROM_WAIT_USEC) {
dev_err(&adapter->pdev->dev,
"Timeout reached waiting for rom done");
return -EIO;
}
udelay(1);
}
return 0;
}
static int do_rom_fast_read(struct qlcnic_adapter *adapter,
int addr, int *valp)
{
QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ADDRESS, addr);
QLCWR32(adapter, QLCNIC_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ABYTE_CNT, 3);
QLCWR32(adapter, QLCNIC_ROMUSB_ROM_INSTR_OPCODE, 0xb);
if (qlcnic_wait_rom_done(adapter)) {
dev_err(&adapter->pdev->dev, "Error waiting for rom done\n");
return -EIO;
}
/* reset abyte_cnt and dummy_byte_cnt */
QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ABYTE_CNT, 0);
udelay(10);
QLCWR32(adapter, QLCNIC_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
*valp = QLCRD32(adapter, QLCNIC_ROMUSB_ROM_RDATA);
return 0;
}
static int do_rom_fast_read_words(struct qlcnic_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
qlcnic_rom_fast_read_words(struct qlcnic_adapter *adapter, int addr,
u8 *bytes, size_t size)
{
int ret;
ret = qlcnic_rom_lock(adapter);
if (ret < 0)
return ret;
ret = do_rom_fast_read_words(adapter, addr, bytes, size);
qlcnic_rom_unlock(adapter);
return ret;
}
int qlcnic_rom_fast_read(struct qlcnic_adapter *adapter, int addr, int *valp)
{
int ret;
if (qlcnic_rom_lock(adapter) != 0)
return -EIO;
ret = do_rom_fast_read(adapter, addr, valp);
qlcnic_rom_unlock(adapter);
return ret;
}
int qlcnic_pinit_from_rom(struct qlcnic_adapter *adapter)
{
int addr, val;
int i, n, init_delay;
struct crb_addr_pair *buf;
unsigned offset;
u32 off;
struct pci_dev *pdev = adapter->pdev;
/* resetall */
qlcnic_rom_lock(adapter);
QLCWR32(adapter, QLCNIC_ROMUSB_GLB_SW_RESET, 0xffffffff);
qlcnic_rom_unlock(adapter);
if (qlcnic_rom_fast_read(adapter, 0, &n) != 0 || (n != 0xcafecafe) ||
qlcnic_rom_fast_read(adapter, 4, &n) != 0) {
dev_err(&pdev->dev, "ERROR Reading crb_init area: val:%x\n", n);
return -EIO;
}
offset = n & 0xffffU;
n = (n >> 16) & 0xffffU;
if (n >= 1024) {
dev_err(&pdev->dev, "QLOGIC card flash not initialized.\n");
return -EIO;
}
buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
if (buf == NULL) {
dev_err(&pdev->dev, "Unable to calloc memory for rom read.\n");
return -ENOMEM;
}
for (i = 0; i < n; i++) {
if (qlcnic_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
qlcnic_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
kfree(buf);
return -EIO;
}
buf[i].addr = addr;
buf[i].data = val;
}
for (i = 0; i < n; i++) {
off = qlcnic_decode_crb_addr(buf[i].addr);
if (off == QLCNIC_ADDR_ERROR) {
dev_err(&pdev->dev, "CRB init value out of range %x\n",
buf[i].addr);
continue;
}
off += QLCNIC_PCI_CRBSPACE;
if (off & 1)
continue;
/* skipping cold reboot MAGIC */
if (off == QLCNIC_CAM_RAM(0x1fc))
continue;
if (off == (QLCNIC_CRB_I2C0 + 0x1c))
continue;
if (off == (ROMUSB_GLB + 0xbc)) /* do not reset PCI */
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 & 0x0ff00000) == QLCNIC_CRB_DDR_NET)
continue;
/* skip the function enable register */
if (off == QLCNIC_PCIE_REG(PCIE_SETUP_FUNCTION))
continue;
if (off == QLCNIC_PCIE_REG(PCIE_SETUP_FUNCTION2))
continue;
if ((off & 0x0ff00000) == QLCNIC_CRB_SMB)
continue;
init_delay = 1;
/* After writing this register, HW needs time for CRB */
/* to quiet down (else crb_window returns 0xffffffff) */
if (off == QLCNIC_ROMUSB_GLB_SW_RESET)
init_delay = 1000;
QLCWR32(adapter, off, buf[i].data);
msleep(init_delay);
}
kfree(buf);
/* p2dn replyCount */
QLCWR32(adapter, QLCNIC_CRB_PEG_NET_D + 0xec, 0x1e);
/* disable_peg_cache 0 & 1*/
QLCWR32(adapter, QLCNIC_CRB_PEG_NET_D + 0x4c, 8);
QLCWR32(adapter, QLCNIC_CRB_PEG_NET_I + 0x4c, 8);
/* peg_clr_all */
QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x8, 0);
QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0xc, 0);
QLCWR32(adapter, QLCNIC_CRB_PEG_NET_1 + 0x8, 0);
QLCWR32(adapter, QLCNIC_CRB_PEG_NET_1 + 0xc, 0);
QLCWR32(adapter, QLCNIC_CRB_PEG_NET_2 + 0x8, 0);
QLCWR32(adapter, QLCNIC_CRB_PEG_NET_2 + 0xc, 0);
QLCWR32(adapter, QLCNIC_CRB_PEG_NET_3 + 0x8, 0);
QLCWR32(adapter, QLCNIC_CRB_PEG_NET_3 + 0xc, 0);
return 0;
}
int
qlcnic_setup_idc_param(struct qlcnic_adapter *adapter) {
int timeo;
u32 val;
if (adapter->fw_hal_version == QLCNIC_FW_BASE) {
val = QLCRD32(adapter, QLCNIC_CRB_DEV_PARTITION_INFO);
val = QLC_DEV_GET_DRV(val, adapter->portnum);
if ((val & 0x3) != QLCNIC_TYPE_NIC) {
dev_err(&adapter->pdev->dev,
"Not an Ethernet NIC func=%u\n", val);
return -EIO;
}
adapter->physical_port = (val >> 2);
}
if (qlcnic_rom_fast_read(adapter, QLCNIC_ROM_DEV_INIT_TIMEOUT, &timeo))
timeo = 30;
adapter->dev_init_timeo = timeo;
if (qlcnic_rom_fast_read(adapter, QLCNIC_ROM_DRV_RESET_TIMEOUT, &timeo))
timeo = 10;
adapter->reset_ack_timeo = timeo;
return 0;
}
static int
qlcnic_has_mn(struct qlcnic_adapter *adapter)
{
u32 capability, flashed_ver;
capability = 0;
qlcnic_rom_fast_read(adapter,
QLCNIC_FW_VERSION_OFFSET, (int *)&flashed_ver);
flashed_ver = QLCNIC_DECODE_VERSION(flashed_ver);
capability = QLCRD32(adapter, QLCNIC_PEG_TUNE_CAPABILITY);
if (capability & QLCNIC_PEG_TUNE_MN_PRESENT)
return 1;
return 0;
}
static
struct uni_table_desc *qlcnic_get_table_desc(const u8 *unirom, int section)
{
u32 i;
struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
__le32 entries = cpu_to_le32(directory->num_entries);
for (i = 0; i < entries; i++) {
__le32 offs = cpu_to_le32(directory->findex) +
(i * cpu_to_le32(directory->entry_size));
__le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
if (tab_type == section)
return (struct uni_table_desc *) &unirom[offs];
}
return NULL;
}
#define FILEHEADER_SIZE (14 * 4)
static int
qlcnic_validate_header(struct qlcnic_adapter *adapter)
{
const u8 *unirom = adapter->fw->data;
struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
__le32 fw_file_size = adapter->fw->size;
__le32 entries;
__le32 entry_size;
__le32 tab_size;
if (fw_file_size < FILEHEADER_SIZE)
return -EINVAL;
entries = cpu_to_le32(directory->num_entries);
entry_size = cpu_to_le32(directory->entry_size);
tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
if (fw_file_size < tab_size)
return -EINVAL;
return 0;
}
static int
qlcnic_validate_bootld(struct qlcnic_adapter *adapter)
{
struct uni_table_desc *tab_desc;
struct uni_data_desc *descr;
const u8 *unirom = adapter->fw->data;
int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
QLCNIC_UNI_BOOTLD_IDX_OFF));
__le32 offs;
__le32 tab_size;
__le32 data_size;
tab_desc = qlcnic_get_table_desc(unirom, QLCNIC_UNI_DIR_SECT_BOOTLD);
if (!tab_desc)
return -EINVAL;
tab_size = cpu_to_le32(tab_desc->findex) +
(cpu_to_le32(tab_desc->entry_size) * (idx + 1));
if (adapter->fw->size < tab_size)
return -EINVAL;
offs = cpu_to_le32(tab_desc->findex) +
(cpu_to_le32(tab_desc->entry_size) * (idx));
descr = (struct uni_data_desc *)&unirom[offs];
data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
if (adapter->fw->size < data_size)
return -EINVAL;
return 0;
}
static int
qlcnic_validate_fw(struct qlcnic_adapter *adapter)
{
struct uni_table_desc *tab_desc;
struct uni_data_desc *descr;
const u8 *unirom = adapter->fw->data;
int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
QLCNIC_UNI_FIRMWARE_IDX_OFF));
__le32 offs;
__le32 tab_size;
__le32 data_size;
tab_desc = qlcnic_get_table_desc(unirom, QLCNIC_UNI_DIR_SECT_FW);
if (!tab_desc)
return -EINVAL;
tab_size = cpu_to_le32(tab_desc->findex) +
(cpu_to_le32(tab_desc->entry_size) * (idx + 1));
if (adapter->fw->size < tab_size)
return -EINVAL;
offs = cpu_to_le32(tab_desc->findex) +
(cpu_to_le32(tab_desc->entry_size) * (idx));
descr = (struct uni_data_desc *)&unirom[offs];
data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
if (adapter->fw->size < data_size)
return -EINVAL;
return 0;
}
static int
qlcnic_validate_product_offs(struct qlcnic_adapter *adapter)
{
struct uni_table_desc *ptab_descr;
const u8 *unirom = adapter->fw->data;
int mn_present = qlcnic_has_mn(adapter);
__le32 entries;
__le32 entry_size;
__le32 tab_size;
u32 i;
ptab_descr = qlcnic_get_table_desc(unirom,
QLCNIC_UNI_DIR_SECT_PRODUCT_TBL);
if (!ptab_descr)
return -EINVAL;
entries = cpu_to_le32(ptab_descr->num_entries);
entry_size = cpu_to_le32(ptab_descr->entry_size);
tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
if (adapter->fw->size < tab_size)
return -EINVAL;
nomn:
for (i = 0; i < entries; i++) {
__le32 flags, file_chiprev, offs;
u8 chiprev = adapter->ahw.revision_id;
u32 flagbit;
offs = cpu_to_le32(ptab_descr->findex) +
(i * cpu_to_le32(ptab_descr->entry_size));
flags = cpu_to_le32(*((int *)&unirom[offs] +
QLCNIC_UNI_FLAGS_OFF));
file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
QLCNIC_UNI_CHIP_REV_OFF));
flagbit = mn_present ? 1 : 2;
if ((chiprev == file_chiprev) &&
((1ULL << flagbit) & flags)) {
adapter->file_prd_off = offs;
return 0;
}
}
if (mn_present) {
mn_present = 0;
goto nomn;
}
return -EINVAL;
}
static int
qlcnic_validate_unified_romimage(struct qlcnic_adapter *adapter)
{
if (qlcnic_validate_header(adapter)) {
dev_err(&adapter->pdev->dev,
"unified image: header validation failed\n");
return -EINVAL;
}
if (qlcnic_validate_product_offs(adapter)) {
dev_err(&adapter->pdev->dev,
"unified image: product validation failed\n");
return -EINVAL;
}
if (qlcnic_validate_bootld(adapter)) {
dev_err(&adapter->pdev->dev,
"unified image: bootld validation failed\n");
return -EINVAL;
}
if (qlcnic_validate_fw(adapter)) {
dev_err(&adapter->pdev->dev,
"unified image: firmware validation failed\n");
return -EINVAL;
}
return 0;
}
static
struct uni_data_desc *qlcnic_get_data_desc(struct qlcnic_adapter *adapter,
u32 section, u32 idx_offset)
{
const u8 *unirom = adapter->fw->data;
int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
idx_offset));
struct uni_table_desc *tab_desc;
__le32 offs;
tab_desc = qlcnic_get_table_desc(unirom, section);
if (tab_desc == NULL)
return NULL;
offs = cpu_to_le32(tab_desc->findex) +
(cpu_to_le32(tab_desc->entry_size) * idx);
return (struct uni_data_desc *)&unirom[offs];
}
static u8 *
qlcnic_get_bootld_offs(struct qlcnic_adapter *adapter)
{
u32 offs = QLCNIC_BOOTLD_START;
if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
offs = cpu_to_le32((qlcnic_get_data_desc(adapter,
QLCNIC_UNI_DIR_SECT_BOOTLD,
QLCNIC_UNI_BOOTLD_IDX_OFF))->findex);
return (u8 *)&adapter->fw->data[offs];
}
static u8 *
qlcnic_get_fw_offs(struct qlcnic_adapter *adapter)
{
u32 offs = QLCNIC_IMAGE_START;
if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
offs = cpu_to_le32((qlcnic_get_data_desc(adapter,
QLCNIC_UNI_DIR_SECT_FW,
QLCNIC_UNI_FIRMWARE_IDX_OFF))->findex);
return (u8 *)&adapter->fw->data[offs];
}
static __le32
qlcnic_get_fw_size(struct qlcnic_adapter *adapter)
{
if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
return cpu_to_le32((qlcnic_get_data_desc(adapter,
QLCNIC_UNI_DIR_SECT_FW,
QLCNIC_UNI_FIRMWARE_IDX_OFF))->size);
else
return cpu_to_le32(
*(u32 *)&adapter->fw->data[QLCNIC_FW_SIZE_OFFSET]);
}
static __le32
qlcnic_get_fw_version(struct qlcnic_adapter *adapter)
{
struct uni_data_desc *fw_data_desc;
const struct firmware *fw = adapter->fw;
__le32 major, minor, sub;
const u8 *ver_str;
int i, ret;
if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE)
return cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_VERSION_OFFSET]);
fw_data_desc = qlcnic_get_data_desc(adapter, QLCNIC_UNI_DIR_SECT_FW,
QLCNIC_UNI_FIRMWARE_IDX_OFF);
ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
cpu_to_le32(fw_data_desc->size) - 17;
for (i = 0; i < 12; i++) {
if (!strncmp(&ver_str[i], "REV=", 4)) {
ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
&major, &minor, &sub);
if (ret != 3)
return 0;
else
return major + (minor << 8) + (sub << 16);
}
}
return 0;
}
static __le32
qlcnic_get_bios_version(struct qlcnic_adapter *adapter)
{
const struct firmware *fw = adapter->fw;
__le32 bios_ver, prd_off = adapter->file_prd_off;
if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE)
return cpu_to_le32(
*(u32 *)&fw->data[QLCNIC_BIOS_VERSION_OFFSET]);
bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
+ QLCNIC_UNI_BIOS_VERSION_OFF));
return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) + (bios_ver >> 24);
}
int
qlcnic_need_fw_reset(struct qlcnic_adapter *adapter)
{
u32 count, old_count;
u32 val, version, major, minor, build;
int i, timeout;
if (adapter->need_fw_reset)
return 1;
/* last attempt had failed */
if (QLCRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
return 1;
old_count = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
for (i = 0; i < 10; i++) {
timeout = msleep_interruptible(200);
if (timeout) {
QLCWR32(adapter, CRB_CMDPEG_STATE,
PHAN_INITIALIZE_FAILED);
return -EINTR;
}
count = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
if (count != old_count)
break;
}
/* firmware is dead */
if (count == old_count)
return 1;
/* check if we have got newer or different file firmware */
if (adapter->fw) {
val = qlcnic_get_fw_version(adapter);
version = QLCNIC_DECODE_VERSION(val);
major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
if (version > QLCNIC_VERSION_CODE(major, minor, build))
return 1;
}
return 0;
}
static const char *fw_name[] = {
QLCNIC_UNIFIED_ROMIMAGE_NAME,
QLCNIC_FLASH_ROMIMAGE_NAME,
};
int
qlcnic_load_firmware(struct qlcnic_adapter *adapter)
{
u64 *ptr64;
u32 i, flashaddr, size;
const struct firmware *fw = adapter->fw;
struct pci_dev *pdev = adapter->pdev;
dev_info(&pdev->dev, "loading firmware from %s\n",
fw_name[adapter->fw_type]);
if (fw) {
__le64 data;
size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8;
ptr64 = (u64 *)qlcnic_get_bootld_offs(adapter);
flashaddr = QLCNIC_BOOTLD_START;
for (i = 0; i < size; i++) {
data = cpu_to_le64(ptr64[i]);
if (qlcnic_pci_mem_write_2M(adapter, flashaddr, data))
return -EIO;
flashaddr += 8;
}
size = (__force u32)qlcnic_get_fw_size(adapter) / 8;
ptr64 = (u64 *)qlcnic_get_fw_offs(adapter);
flashaddr = QLCNIC_IMAGE_START;
for (i = 0; i < size; i++) {
data = cpu_to_le64(ptr64[i]);
if (qlcnic_pci_mem_write_2M(adapter,
flashaddr, data))
return -EIO;
flashaddr += 8;
}
size = (__force u32)qlcnic_get_fw_size(adapter) % 8;
if (size) {
data = cpu_to_le64(ptr64[i]);
if (qlcnic_pci_mem_write_2M(adapter,
flashaddr, data))
return -EIO;
}
} else {
u64 data;
u32 hi, lo;
size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8;
flashaddr = QLCNIC_BOOTLD_START;
for (i = 0; i < size; i++) {
if (qlcnic_rom_fast_read(adapter,
flashaddr, (int *)&lo) != 0)
return -EIO;
if (qlcnic_rom_fast_read(adapter,
flashaddr + 4, (int *)&hi) != 0)
return -EIO;
data = (((u64)hi << 32) | lo);
if (qlcnic_pci_mem_write_2M(adapter,
flashaddr, data))
return -EIO;
flashaddr += 8;
}
}
msleep(1);
QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x18, 0x1020);
QLCWR32(adapter, QLCNIC_ROMUSB_GLB_SW_RESET, 0x80001e);
return 0;
}
static int
qlcnic_validate_firmware(struct qlcnic_adapter *adapter)
{
__le32 val;
u32 ver, min_ver, bios, min_size;
struct pci_dev *pdev = adapter->pdev;
const struct firmware *fw = adapter->fw;
u8 fw_type = adapter->fw_type;
if (fw_type == QLCNIC_UNIFIED_ROMIMAGE) {
if (qlcnic_validate_unified_romimage(adapter))
return -EINVAL;
min_size = QLCNIC_UNI_FW_MIN_SIZE;
} else {
val = cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_MAGIC_OFFSET]);
if ((__force u32)val != QLCNIC_BDINFO_MAGIC)
return -EINVAL;
min_size = QLCNIC_FW_MIN_SIZE;
}
if (fw->size < min_size)
return -EINVAL;
val = qlcnic_get_fw_version(adapter);
min_ver = QLCNIC_VERSION_CODE(4, 0, 216);
ver = QLCNIC_DECODE_VERSION(val);
if ((_major(ver) > _QLCNIC_LINUX_MAJOR) || (ver < min_ver)) {
dev_err(&pdev->dev,
"%s: firmware version %d.%d.%d unsupported\n",
fw_name[fw_type], _major(ver), _minor(ver), _build(ver));
return -EINVAL;
}
val = qlcnic_get_bios_version(adapter);
qlcnic_rom_fast_read(adapter, QLCNIC_BIOS_VERSION_OFFSET, (int *)&bios);
if ((__force u32)val != bios) {
dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
fw_name[fw_type]);
return -EINVAL;
}
/* check if flashed firmware is newer */
if (qlcnic_rom_fast_read(adapter,
QLCNIC_FW_VERSION_OFFSET, (int *)&val))
return -EIO;
val = QLCNIC_DECODE_VERSION(val);
if (val > ver) {
dev_info(&pdev->dev, "%s: firmware is older than flash\n",
fw_name[fw_type]);
return -EINVAL;
}
QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
return 0;
}
static void
qlcnic_get_next_fwtype(struct qlcnic_adapter *adapter)
{
u8 fw_type;
switch (adapter->fw_type) {
case QLCNIC_UNKNOWN_ROMIMAGE:
fw_type = QLCNIC_UNIFIED_ROMIMAGE;
break;
case QLCNIC_UNIFIED_ROMIMAGE:
default:
fw_type = QLCNIC_FLASH_ROMIMAGE;
break;
}
adapter->fw_type = fw_type;
}
void qlcnic_request_firmware(struct qlcnic_adapter *adapter)
{
struct pci_dev *pdev = adapter->pdev;
int rc;
adapter->fw_type = QLCNIC_UNKNOWN_ROMIMAGE;
next:
qlcnic_get_next_fwtype(adapter);
if (adapter->fw_type == QLCNIC_FLASH_ROMIMAGE) {
adapter->fw = NULL;
} else {
rc = request_firmware(&adapter->fw,
fw_name[adapter->fw_type], &pdev->dev);
if (rc != 0)
goto next;
rc = qlcnic_validate_firmware(adapter);
if (rc != 0) {
release_firmware(adapter->fw);
msleep(1);
goto next;
}
}
}
void
qlcnic_release_firmware(struct qlcnic_adapter *adapter)
{
if (adapter->fw)
release_firmware(adapter->fw);
adapter->fw = NULL;
}
int qlcnic_phantom_init(struct qlcnic_adapter *adapter)
{
u32 val;
int retries = 60;
do {
val = QLCRD32(adapter, CRB_CMDPEG_STATE);
switch (val) {
case PHAN_INITIALIZE_COMPLETE:
case PHAN_INITIALIZE_ACK:
return 0;
case PHAN_INITIALIZE_FAILED:
goto out_err;
default:
break;
}
msleep(500);
} while (--retries);
QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
out_err:
dev_err(&adapter->pdev->dev, "firmware init failed\n");
return -EIO;
}
static int
qlcnic_receive_peg_ready(struct qlcnic_adapter *adapter)
{
u32 val;
int retries = 2000;
do {
val = QLCRD32(adapter, CRB_RCVPEG_STATE);
if (val == PHAN_PEG_RCV_INITIALIZED)
return 0;
msleep(10);
} while (--retries);
if (!retries) {
dev_err(&adapter->pdev->dev, "Receive Peg initialization not "
"complete, state: 0x%x.\n", val);
return -EIO;
}
return 0;
}
int qlcnic_init_firmware(struct qlcnic_adapter *adapter)
{
int err;
err = qlcnic_receive_peg_ready(adapter);
if (err)
return err;
QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
return err;
}
static void
qlcnic_handle_linkevent(struct qlcnic_adapter *adapter,
struct qlcnic_fw_msg *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)
dev_info(&netdev->dev, "unsupported cable: OUI 0x%x, "
"length %d\n", cable_OUI, cable_len);
else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN)
dev_info(&netdev->dev, "unsupported cable length %d\n",
cable_len);
qlcnic_advert_link_change(adapter, link_status);
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
qlcnic_handle_fw_message(int desc_cnt, int index,
struct qlcnic_host_sds_ring *sds_ring)
{
struct qlcnic_fw_msg 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 = qlcnic_get_nic_msg_opcode(msg.body[0]);
switch (opcode) {
case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
qlcnic_handle_linkevent(sds_ring->adapter, &msg);
break;
default:
break;
}
}
static int
qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter,
struct qlcnic_host_rds_ring *rds_ring,
struct qlcnic_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) {
adapter->stats.skb_alloc_failure++;
return -ENOMEM;
}
skb = buffer->skb;
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)) {
adapter->stats.rx_dma_map_error++;
dev_kfree_skb_any(skb);
buffer->skb = NULL;
return -ENOMEM;
}
buffer->skb = skb;
buffer->dma = dma;
buffer->state = QLCNIC_BUFFER_BUSY;
return 0;
}
static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
struct qlcnic_host_rds_ring *rds_ring, u16 index, u16 cksum)
{
struct qlcnic_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) {
adapter->stats.null_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 = QLCNIC_BUFFER_FREE;
return skb;
}
static struct qlcnic_rx_buffer *
qlcnic_process_rcv(struct qlcnic_adapter *adapter,
struct qlcnic_host_sds_ring *sds_ring,
int ring, u64 sts_data0)
{
struct net_device *netdev = adapter->netdev;
struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
struct qlcnic_rx_buffer *buffer;
struct sk_buff *skb;
struct qlcnic_host_rds_ring *rds_ring;
int index, length, cksum, pkt_offset;
if (unlikely(ring >= adapter->max_rds_rings))
return NULL;
rds_ring = &recv_ctx->rds_rings[ring];
index = qlcnic_get_sts_refhandle(sts_data0);
if (unlikely(index >= rds_ring->num_desc))
return NULL;
buffer = &rds_ring->rx_buf_arr[index];
length = qlcnic_get_sts_totallength(sts_data0);
cksum = qlcnic_get_sts_status(sts_data0);
pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
skb = qlcnic_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->truesize = skb->len + sizeof(struct sk_buff);
skb->protocol = eth_type_trans(skb, netdev);
napi_gro_receive(&sds_ring->napi, skb);
adapter->stats.rx_pkts++;
adapter->stats.rxbytes += length;
return buffer;
}
#define QLC_TCP_HDR_SIZE 20
#define QLC_TCP_TS_OPTION_SIZE 12
#define QLC_TCP_TS_HDR_SIZE (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE)
static struct qlcnic_rx_buffer *
qlcnic_process_lro(struct qlcnic_adapter *adapter,
struct qlcnic_host_sds_ring *sds_ring,
int ring, u64 sts_data0, u64 sts_data1)
{
struct net_device *netdev = adapter->netdev;
struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
struct qlcnic_rx_buffer *buffer;
struct sk_buff *skb;
struct qlcnic_host_rds_ring *rds_ring;
struct iphdr *iph;
struct tcphdr *th;
bool push, timestamp;
int l2_hdr_offset, l4_hdr_offset;
int index;
u16 lro_length, length, data_offset;
u32 seq_number;
if (unlikely(ring > adapter->max_rds_rings))
return NULL;
rds_ring = &recv_ctx->rds_rings[ring];
index = qlcnic_get_lro_sts_refhandle(sts_data0);
if (unlikely(index > rds_ring->num_desc))
return NULL;
buffer = &rds_ring->rx_buf_arr[index];
timestamp = qlcnic_get_lro_sts_timestamp(sts_data0);
lro_length = qlcnic_get_lro_sts_length(sts_data0);
l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0);
l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0);
push = qlcnic_get_lro_sts_push_flag(sts_data0);
seq_number = qlcnic_get_lro_sts_seq_number(sts_data1);
skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
if (!skb)
return buffer;
if (timestamp)
data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE;
else
data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE;
skb_put(skb, lro_length + data_offset);
skb->truesize = skb->len + sizeof(struct sk_buff) + skb_headroom(skb);
skb_pull(skb, l2_hdr_offset);
skb->protocol = eth_type_trans(skb, netdev);
iph = (struct iphdr *)skb->data;
th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
iph->tot_len = htons(length);
iph->check = 0;
iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
th->psh = push;
th->seq = htonl(seq_number);
length = skb->len;
netif_receive_skb(skb);
adapter->stats.lro_pkts++;
adapter->stats.lrobytes += length;
return buffer;
}
int
qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
{
struct qlcnic_adapter *adapter = sds_ring->adapter;
struct list_head *cur;
struct status_desc *desc;
struct qlcnic_rx_buffer *rxbuf;
u64 sts_data0, sts_data1;
int count = 0;
int opcode, ring, desc_cnt;
u32 consumer = sds_ring->consumer;
while (count < max) {
desc = &sds_ring->desc_head[consumer];
sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
if (!(sts_data0 & STATUS_OWNER_HOST))
break;
desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
opcode = qlcnic_get_sts_opcode(sts_data0);
switch (opcode) {
case QLCNIC_RXPKT_DESC:
case QLCNIC_OLD_RXPKT_DESC:
case QLCNIC_SYN_OFFLOAD:
ring = qlcnic_get_sts_type(sts_data0);
rxbuf = qlcnic_process_rcv(adapter, sds_ring,
ring, sts_data0);
break;
case QLCNIC_LRO_DESC:
ring = qlcnic_get_lro_sts_type(sts_data0);
sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
rxbuf = qlcnic_process_lro(adapter, sds_ring,
ring, sts_data0, sts_data1);
break;
case QLCNIC_RESPONSE_DESC:
qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
default:
goto skip;
}
WARN_ON(desc_cnt > 1);
if (rxbuf)
list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
else
adapter->stats.null_rxbuf++;
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 qlcnic_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 qlcnic_rx_buffer, list);
qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
}
spin_lock(&rds_ring->lock);
list_splice_tail_init(&sds_ring->free_list[ring],
&rds_ring->free_list);
spin_unlock(&rds_ring->lock);
}
qlcnic_post_rx_buffers_nodb(adapter, rds_ring);
}
if (count) {
sds_ring->consumer = consumer;
writel(consumer, sds_ring->crb_sts_consumer);
}
return count;
}
void
qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter, u32 ringid,
struct qlcnic_host_rds_ring *rds_ring)
{
struct rcv_desc *pdesc;
struct qlcnic_rx_buffer *buffer;
int producer, count = 0;
struct list_head *head;
spin_lock(&rds_ring->lock);
producer = rds_ring->producer;
head = &rds_ring->free_list;
while (!list_empty(head)) {
buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
if (!buffer->skb) {
if (qlcnic_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);
}
if (count) {
rds_ring->producer = producer;
writel((producer-1) & (rds_ring->num_desc-1),
rds_ring->crb_rcv_producer);
}
spin_unlock(&rds_ring->lock);
}
static void
qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
struct qlcnic_host_rds_ring *rds_ring)
{
struct rcv_desc *pdesc;
struct qlcnic_rx_buffer *buffer;
int producer, count = 0;
struct list_head *head;
if (!spin_trylock(&rds_ring->lock))
return;
producer = rds_ring->producer;
head = &rds_ring->free_list;
while (!list_empty(head)) {
buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
if (!buffer->skb) {
if (qlcnic_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;
writel((producer - 1) & (rds_ring->num_desc - 1),
rds_ring->crb_rcv_producer);
}
spin_unlock(&rds_ring->lock);
}
static struct qlcnic_rx_buffer *
qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter,
struct qlcnic_host_sds_ring *sds_ring,
int ring, u64 sts_data0)
{
struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
struct qlcnic_rx_buffer *buffer;
struct sk_buff *skb;
struct qlcnic_host_rds_ring *rds_ring;
int index, length, cksum, pkt_offset;
if (unlikely(ring >= adapter->max_rds_rings))
return NULL;
rds_ring = &recv_ctx->rds_rings[ring];
index = qlcnic_get_sts_refhandle(sts_data0);
if (unlikely(index >= rds_ring->num_desc))
return NULL;
buffer = &rds_ring->rx_buf_arr[index];
length = qlcnic_get_sts_totallength(sts_data0);
cksum = qlcnic_get_sts_status(sts_data0);
pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
if (!skb)
return buffer;
skb_put(skb, rds_ring->skb_size);
if (pkt_offset)
skb_pull(skb, pkt_offset);
skb->truesize = skb->len + sizeof(struct sk_buff);
if (!qlcnic_check_loopback_buff(skb->data))
adapter->diag_cnt++;
dev_kfree_skb_any(skb);
adapter->stats.rx_pkts++;
adapter->stats.rxbytes += length;
return buffer;
}
void
qlcnic_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
{
struct qlcnic_adapter *adapter = sds_ring->adapter;
struct status_desc *desc;
struct qlcnic_rx_buffer *rxbuf;
u64 sts_data0;
int opcode, ring, desc_cnt;
u32 consumer = sds_ring->consumer;
desc = &sds_ring->desc_head[consumer];
sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
if (!(sts_data0 & STATUS_OWNER_HOST))
return;
desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
opcode = qlcnic_get_sts_opcode(sts_data0);
ring = qlcnic_get_sts_type(sts_data0);
rxbuf = qlcnic_process_rcv_diag(adapter, sds_ring,
ring, sts_data0);
desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
consumer = get_next_index(consumer, sds_ring->num_desc);
sds_ring->consumer = consumer;
writel(consumer, sds_ring->crb_sts_consumer);
}
void
qlcnic_fetch_mac(struct qlcnic_adapter *adapter, u32 off1, u32 off2,
u8 alt_mac, u8 *mac)
{
u32 mac_low, mac_high;
int i;
mac_low = QLCRD32(adapter, off1);
mac_high = QLCRD32(adapter, off2);
if (alt_mac) {
mac_low |= (mac_low >> 16) | (mac_high << 16);
mac_high >>= 16;
}
for (i = 0; i < 2; i++)
mac[i] = (u8)(mac_high >> ((1 - i) * 8));
for (i = 2; i < 6; i++)
mac[i] = (u8)(mac_low >> ((5 - i) * 8));
}
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