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linux/drivers/net/netxen/netxen_nic_hw.c
Dhananjay Phadke 443be7960b netxen: improve msi support 
Recent netxen firmware has new scheme of generating MSI interrupts, it
raises interrupt and blocks itself, waiting for driver to unmask. This
reduces chance of spurious interrupts.

The driver will be able to deal with older firmware as well.

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Tested-by: Vernon Mauery <mauery@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-25 23:16:15 -04:00

1206 lines
32 KiB
C
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/*
* Copyright (C) 2003 - 2006 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,
* 3965 Freedom Circle, Fourth floor,
* Santa Clara, CA 95054
*
*
* Source file for NIC routines to access the Phantom hardware
*
*/
#include "netxen_nic.h"
#include "netxen_nic_hw.h"
#include "netxen_nic_phan_reg.h"
#include <net/ip.h>
struct netxen_recv_crb recv_crb_registers[] = {
/*
* Instance 0.
*/
{
/* rcv_desc_crb: */
{
{
/* crb_rcv_producer_offset: */
NETXEN_NIC_REG(0x100),
/* crb_rcv_consumer_offset: */
NETXEN_NIC_REG(0x104),
/* crb_gloablrcv_ring: */
NETXEN_NIC_REG(0x108),
/* crb_rcv_ring_size */
NETXEN_NIC_REG(0x10c),
},
/* Jumbo frames */
{
/* crb_rcv_producer_offset: */
NETXEN_NIC_REG(0x110),
/* crb_rcv_consumer_offset: */
NETXEN_NIC_REG(0x114),
/* crb_gloablrcv_ring: */
NETXEN_NIC_REG(0x118),
/* crb_rcv_ring_size */
NETXEN_NIC_REG(0x11c),
},
/* LRO */
{
/* crb_rcv_producer_offset: */
NETXEN_NIC_REG(0x120),
/* crb_rcv_consumer_offset: */
NETXEN_NIC_REG(0x124),
/* crb_gloablrcv_ring: */
NETXEN_NIC_REG(0x128),
/* crb_rcv_ring_size */
NETXEN_NIC_REG(0x12c),
}
},
/* crb_rcvstatus_ring: */
NETXEN_NIC_REG(0x130),
/* crb_rcv_status_producer: */
NETXEN_NIC_REG(0x134),
/* crb_rcv_status_consumer: */
NETXEN_NIC_REG(0x138),
/* crb_rcvpeg_state: */
NETXEN_NIC_REG(0x13c),
/* crb_status_ring_size */
NETXEN_NIC_REG(0x140),
},
/*
* Instance 1,
*/
{
/* rcv_desc_crb: */
{
{
/* crb_rcv_producer_offset: */
NETXEN_NIC_REG(0x144),
/* crb_rcv_consumer_offset: */
NETXEN_NIC_REG(0x148),
/* crb_globalrcv_ring: */
NETXEN_NIC_REG(0x14c),
/* crb_rcv_ring_size */
NETXEN_NIC_REG(0x150),
},
/* Jumbo frames */
{
/* crb_rcv_producer_offset: */
NETXEN_NIC_REG(0x154),
/* crb_rcv_consumer_offset: */
NETXEN_NIC_REG(0x158),
/* crb_globalrcv_ring: */
NETXEN_NIC_REG(0x15c),
/* crb_rcv_ring_size */
NETXEN_NIC_REG(0x160),
},
/* LRO */
{
/* crb_rcv_producer_offset: */
NETXEN_NIC_REG(0x164),
/* crb_rcv_consumer_offset: */
NETXEN_NIC_REG(0x168),
/* crb_globalrcv_ring: */
NETXEN_NIC_REG(0x16c),
/* crb_rcv_ring_size */
NETXEN_NIC_REG(0x170),
}
},
/* crb_rcvstatus_ring: */
NETXEN_NIC_REG(0x174),
/* crb_rcv_status_producer: */
NETXEN_NIC_REG(0x178),
/* crb_rcv_status_consumer: */
NETXEN_NIC_REG(0x17c),
/* crb_rcvpeg_state: */
NETXEN_NIC_REG(0x180),
/* crb_status_ring_size */
NETXEN_NIC_REG(0x184),
},
/*
* Instance 2,
*/
{
{
{
/* crb_rcv_producer_offset: */
NETXEN_NIC_REG(0x1d8),
/* crb_rcv_consumer_offset: */
NETXEN_NIC_REG(0x1dc),
/* crb_gloablrcv_ring: */
NETXEN_NIC_REG(0x1f0),
/* crb_rcv_ring_size */
NETXEN_NIC_REG(0x1f4),
},
/* Jumbo frames */
{
/* crb_rcv_producer_offset: */
NETXEN_NIC_REG(0x1f8),
/* crb_rcv_consumer_offset: */
NETXEN_NIC_REG(0x1fc),
/* crb_gloablrcv_ring: */
NETXEN_NIC_REG(0x200),
/* crb_rcv_ring_size */
NETXEN_NIC_REG(0x204),
},
/* LRO */
{
/* crb_rcv_producer_offset: */
NETXEN_NIC_REG(0x208),
/* crb_rcv_consumer_offset: */
NETXEN_NIC_REG(0x20c),
/* crb_gloablrcv_ring: */
NETXEN_NIC_REG(0x210),
/* crb_rcv_ring_size */
NETXEN_NIC_REG(0x214),
}
},
/* crb_rcvstatus_ring: */
NETXEN_NIC_REG(0x218),
/* crb_rcv_status_producer: */
NETXEN_NIC_REG(0x21c),
/* crb_rcv_status_consumer: */
NETXEN_NIC_REG(0x220),
/* crb_rcvpeg_state: */
NETXEN_NIC_REG(0x224),
/* crb_status_ring_size */
NETXEN_NIC_REG(0x228),
},
/*
* Instance 3,
*/
{
{
{
/* crb_rcv_producer_offset: */
NETXEN_NIC_REG(0x22c),
/* crb_rcv_consumer_offset: */
NETXEN_NIC_REG(0x230),
/* crb_gloablrcv_ring: */
NETXEN_NIC_REG(0x234),
/* crb_rcv_ring_size */
NETXEN_NIC_REG(0x238),
},
/* Jumbo frames */
{
/* crb_rcv_producer_offset: */
NETXEN_NIC_REG(0x23c),
/* crb_rcv_consumer_offset: */
NETXEN_NIC_REG(0x240),
/* crb_gloablrcv_ring: */
NETXEN_NIC_REG(0x244),
/* crb_rcv_ring_size */
NETXEN_NIC_REG(0x248),
},
/* LRO */
{
/* crb_rcv_producer_offset: */
NETXEN_NIC_REG(0x24c),
/* crb_rcv_consumer_offset: */
NETXEN_NIC_REG(0x250),
/* crb_gloablrcv_ring: */
NETXEN_NIC_REG(0x254),
/* crb_rcv_ring_size */
NETXEN_NIC_REG(0x258),
}
},
/* crb_rcvstatus_ring: */
NETXEN_NIC_REG(0x25c),
/* crb_rcv_status_producer: */
NETXEN_NIC_REG(0x260),
/* crb_rcv_status_consumer: */
NETXEN_NIC_REG(0x264),
/* crb_rcvpeg_state: */
NETXEN_NIC_REG(0x268),
/* crb_status_ring_size */
NETXEN_NIC_REG(0x26c),
},
};
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])
/* PCI Windowing for DDR regions. */
#define ADDR_IN_RANGE(addr, low, high) \
(((addr) <= (high)) && ((addr) >= (low)))
#define NETXEN_FLASH_BASE (NETXEN_BOOTLD_START)
#define NETXEN_PHANTOM_MEM_BASE (NETXEN_FLASH_BASE)
#define NETXEN_MAX_MTU 8000 + NETXEN_ENET_HEADER_SIZE + NETXEN_ETH_FCS_SIZE
#define NETXEN_MIN_MTU 64
#define NETXEN_ETH_FCS_SIZE 4
#define NETXEN_ENET_HEADER_SIZE 14
#define NETXEN_WINDOW_ONE 0x2000000 /*CRB Window: bit 25 of CRB address */
#define NETXEN_FIRMWARE_LEN ((16 * 1024) / 4)
#define NETXEN_NIU_HDRSIZE (0x1 << 6)
#define NETXEN_NIU_TLRSIZE (0x1 << 5)
#define lower32(x) ((u32)((x) & 0xffffffff))
#define upper32(x) \
((u32)(((unsigned long long)(x) >> 32) & 0xffffffff))
#define NETXEN_NIC_ZERO_PAUSE_ADDR 0ULL
#define NETXEN_NIC_UNIT_PAUSE_ADDR 0x200ULL
#define NETXEN_NIC_EPG_PAUSE_ADDR1 0x2200010000c28001ULL
#define NETXEN_NIC_EPG_PAUSE_ADDR2 0x0100088866554433ULL
#define NETXEN_NIC_WINDOW_MARGIN 0x100000
static unsigned long netxen_nic_pci_set_window(struct netxen_adapter *adapter,
unsigned long long addr);
void netxen_free_hw_resources(struct netxen_adapter *adapter);
int netxen_nic_set_mac(struct net_device *netdev, void *p)
{
struct netxen_adapter *adapter = netdev_priv(netdev);
struct sockaddr *addr = p;
if (netif_running(netdev))
return -EBUSY;
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
DPRINTK(INFO, "valid ether addr\n");
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
if (adapter->macaddr_set)
adapter->macaddr_set(adapter, addr->sa_data);
return 0;
}
/*
* netxen_nic_set_multi - Multicast
*/
void netxen_nic_set_multi(struct net_device *netdev)
{
struct netxen_adapter *adapter = netdev_priv(netdev);
struct dev_mc_list *mc_ptr;
mc_ptr = netdev->mc_list;
if (netdev->flags & IFF_PROMISC) {
if (adapter->set_promisc)
adapter->set_promisc(adapter,
NETXEN_NIU_PROMISC_MODE);
} else {
if (adapter->unset_promisc)
adapter->unset_promisc(adapter,
NETXEN_NIU_NON_PROMISC_MODE);
}
}
/*
* netxen_nic_change_mtu - Change the Maximum Transfer Unit
* @returns 0 on success, negative on failure
*/
int netxen_nic_change_mtu(struct net_device *netdev, int mtu)
{
struct netxen_adapter *adapter = netdev_priv(netdev);
int eff_mtu = mtu + NETXEN_ENET_HEADER_SIZE + NETXEN_ETH_FCS_SIZE;
if ((eff_mtu > NETXEN_MAX_MTU) || (eff_mtu < NETXEN_MIN_MTU)) {
printk(KERN_ERR "%s: %s %d is not supported.\n",
netxen_nic_driver_name, netdev->name, mtu);
return -EINVAL;
}
if (adapter->set_mtu)
adapter->set_mtu(adapter, mtu);
netdev->mtu = mtu;
return 0;
}
/*
* check if the firmware has been downloaded and ready to run and
* setup the address for the descriptors in the adapter
*/
int netxen_nic_hw_resources(struct netxen_adapter *adapter)
{
struct netxen_hardware_context *hw = &adapter->ahw;
u32 state = 0;
void *addr;
int loops = 0, err = 0;
int ctx, ring;
struct netxen_recv_context *recv_ctx;
struct netxen_rcv_desc_ctx *rcv_desc;
int func_id = adapter->portnum;
DPRINTK(INFO, "crb_base: %lx %x", NETXEN_PCI_CRBSPACE,
PCI_OFFSET_SECOND_RANGE(adapter, NETXEN_PCI_CRBSPACE));
DPRINTK(INFO, "cam base: %lx %x", NETXEN_CRB_CAM,
pci_base_offset(adapter, NETXEN_CRB_CAM));
DPRINTK(INFO, "cam RAM: %lx %x", NETXEN_CAM_RAM_BASE,
pci_base_offset(adapter, NETXEN_CAM_RAM_BASE));
for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
DPRINTK(INFO, "Command Peg ready..waiting for rcv peg\n");
loops = 0;
state = 0;
/* Window 1 call */
state = readl(NETXEN_CRB_NORMALIZE(adapter,
recv_crb_registers[ctx].
crb_rcvpeg_state));
while (state != PHAN_PEG_RCV_INITIALIZED && loops < 20) {
msleep(1);
/* Window 1 call */
state = readl(NETXEN_CRB_NORMALIZE(adapter,
recv_crb_registers
[ctx].
crb_rcvpeg_state));
loops++;
}
if (loops >= 20) {
printk(KERN_ERR "Rcv Peg initialization not complete:"
"%x.\n", state);
err = -EIO;
return err;
}
}
adapter->intr_scheme = readl(
NETXEN_CRB_NORMALIZE(adapter, CRB_NIC_CAPABILITIES_FW));
printk(KERN_NOTICE "%s: FW capabilities:0x%x\n", netxen_nic_driver_name,
adapter->intr_scheme);
adapter->msi_mode = readl(
NETXEN_CRB_NORMALIZE(adapter, CRB_NIC_MSI_MODE_FW));
DPRINTK(INFO, "Receive Peg ready too. starting stuff\n");
addr = netxen_alloc(adapter->ahw.pdev,
sizeof(struct netxen_ring_ctx) +
sizeof(uint32_t),
(dma_addr_t *) & adapter->ctx_desc_phys_addr,
&adapter->ctx_desc_pdev);
printk(KERN_INFO "ctx_desc_phys_addr: 0x%llx\n",
(unsigned long long) adapter->ctx_desc_phys_addr);
if (addr == NULL) {
DPRINTK(ERR, "bad return from pci_alloc_consistent\n");
err = -ENOMEM;
return err;
}
memset(addr, 0, sizeof(struct netxen_ring_ctx));
adapter->ctx_desc = (struct netxen_ring_ctx *)addr;
adapter->ctx_desc->ctx_id = cpu_to_le32(adapter->portnum);
adapter->ctx_desc->cmd_consumer_offset =
cpu_to_le64(adapter->ctx_desc_phys_addr +
sizeof(struct netxen_ring_ctx));
adapter->cmd_consumer = (__le32 *) (((char *)addr) +
sizeof(struct netxen_ring_ctx));
addr = netxen_alloc(adapter->ahw.pdev,
sizeof(struct cmd_desc_type0) *
adapter->max_tx_desc_count,
(dma_addr_t *) & hw->cmd_desc_phys_addr,
&adapter->ahw.cmd_desc_pdev);
printk(KERN_INFO "cmd_desc_phys_addr: 0x%llx\n",
(unsigned long long) hw->cmd_desc_phys_addr);
if (addr == NULL) {
DPRINTK(ERR, "bad return from pci_alloc_consistent\n");
netxen_free_hw_resources(adapter);
return -ENOMEM;
}
adapter->ctx_desc->cmd_ring_addr =
cpu_to_le64(hw->cmd_desc_phys_addr);
adapter->ctx_desc->cmd_ring_size =
cpu_to_le32(adapter->max_tx_desc_count);
hw->cmd_desc_head = (struct cmd_desc_type0 *)addr;
for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
recv_ctx = &adapter->recv_ctx[ctx];
for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
rcv_desc = &recv_ctx->rcv_desc[ring];
addr = netxen_alloc(adapter->ahw.pdev,
RCV_DESC_RINGSIZE,
&rcv_desc->phys_addr,
&rcv_desc->phys_pdev);
if (addr == NULL) {
DPRINTK(ERR, "bad return from "
"pci_alloc_consistent\n");
netxen_free_hw_resources(adapter);
err = -ENOMEM;
return err;
}
rcv_desc->desc_head = (struct rcv_desc *)addr;
adapter->ctx_desc->rcv_ctx[ring].rcv_ring_addr =
cpu_to_le64(rcv_desc->phys_addr);
adapter->ctx_desc->rcv_ctx[ring].rcv_ring_size =
cpu_to_le32(rcv_desc->max_rx_desc_count);
}
addr = netxen_alloc(adapter->ahw.pdev, STATUS_DESC_RINGSIZE,
&recv_ctx->rcv_status_desc_phys_addr,
&recv_ctx->rcv_status_desc_pdev);
if (addr == NULL) {
DPRINTK(ERR, "bad return from"
" pci_alloc_consistent\n");
netxen_free_hw_resources(adapter);
err = -ENOMEM;
return err;
}
recv_ctx->rcv_status_desc_head = (struct status_desc *)addr;
adapter->ctx_desc->sts_ring_addr =
cpu_to_le64(recv_ctx->rcv_status_desc_phys_addr);
adapter->ctx_desc->sts_ring_size =
cpu_to_le32(adapter->max_rx_desc_count);
}
/* Window = 1 */
writel(lower32(adapter->ctx_desc_phys_addr),
NETXEN_CRB_NORMALIZE(adapter, CRB_CTX_ADDR_REG_LO(func_id)));
writel(upper32(adapter->ctx_desc_phys_addr),
NETXEN_CRB_NORMALIZE(adapter, CRB_CTX_ADDR_REG_HI(func_id)));
writel(NETXEN_CTX_SIGNATURE | func_id,
NETXEN_CRB_NORMALIZE(adapter, CRB_CTX_SIGNATURE_REG(func_id)));
return err;
}
void netxen_free_hw_resources(struct netxen_adapter *adapter)
{
struct netxen_recv_context *recv_ctx;
struct netxen_rcv_desc_ctx *rcv_desc;
int ctx, ring;
if (adapter->ctx_desc != NULL) {
pci_free_consistent(adapter->ctx_desc_pdev,
sizeof(struct netxen_ring_ctx) +
sizeof(uint32_t),
adapter->ctx_desc,
adapter->ctx_desc_phys_addr);
adapter->ctx_desc = NULL;
}
if (adapter->ahw.cmd_desc_head != NULL) {
pci_free_consistent(adapter->ahw.cmd_desc_pdev,
sizeof(struct cmd_desc_type0) *
adapter->max_tx_desc_count,
adapter->ahw.cmd_desc_head,
adapter->ahw.cmd_desc_phys_addr);
adapter->ahw.cmd_desc_head = NULL;
}
for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
recv_ctx = &adapter->recv_ctx[ctx];
for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
rcv_desc = &recv_ctx->rcv_desc[ring];
if (rcv_desc->desc_head != NULL) {
pci_free_consistent(rcv_desc->phys_pdev,
RCV_DESC_RINGSIZE,
rcv_desc->desc_head,
rcv_desc->phys_addr);
rcv_desc->desc_head = NULL;
}
}
if (recv_ctx->rcv_status_desc_head != NULL) {
pci_free_consistent(recv_ctx->rcv_status_desc_pdev,
STATUS_DESC_RINGSIZE,
recv_ctx->rcv_status_desc_head,
recv_ctx->
rcv_status_desc_phys_addr);
recv_ctx->rcv_status_desc_head = NULL;
}
}
}
void netxen_tso_check(struct netxen_adapter *adapter,
struct cmd_desc_type0 *desc, struct sk_buff *skb)
{
if (desc->mss) {
desc->total_hdr_length = (sizeof(struct ethhdr) +
ip_hdrlen(skb) + tcp_hdrlen(skb));
netxen_set_cmd_desc_opcode(desc, TX_TCP_LSO);
} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
if (ip_hdr(skb)->protocol == IPPROTO_TCP) {
netxen_set_cmd_desc_opcode(desc, TX_TCP_PKT);
} else if (ip_hdr(skb)->protocol == IPPROTO_UDP) {
netxen_set_cmd_desc_opcode(desc, TX_UDP_PKT);
} else {
return;
}
}
desc->tcp_hdr_offset = skb_transport_offset(skb);
desc->ip_hdr_offset = skb_network_offset(skb);
}
int netxen_is_flash_supported(struct netxen_adapter *adapter)
{
const int locs[] = { 0, 0x4, 0x100, 0x4000, 0x4128 };
int addr, val01, val02, i, j;
/* if the flash size less than 4Mb, make huge war cry and die */
for (j = 1; j < 4; j++) {
addr = j * NETXEN_NIC_WINDOW_MARGIN;
for (i = 0; i < ARRAY_SIZE(locs); i++) {
if (netxen_rom_fast_read(adapter, locs[i], &val01) == 0
&& netxen_rom_fast_read(adapter, (addr + locs[i]),
&val02) == 0) {
if (val01 == val02)
return -1;
} else
return -1;
}
}
return 0;
}
static int netxen_get_flash_block(struct netxen_adapter *adapter, int base,
int size, __le32 * buf)
{
int i, addr;
__le32 *ptr32;
u32 v;
addr = base;
ptr32 = buf;
for (i = 0; i < size / sizeof(u32); i++) {
if (netxen_rom_fast_read(adapter, addr, &v) == -1)
return -1;
*ptr32 = cpu_to_le32(v);
ptr32++;
addr += sizeof(u32);
}
if ((char *)buf + size > (char *)ptr32) {
__le32 local;
if (netxen_rom_fast_read(adapter, addr, &v) == -1)
return -1;
local = cpu_to_le32(v);
memcpy(ptr32, &local, (char *)buf + size - (char *)ptr32);
}
return 0;
}
int netxen_get_flash_mac_addr(struct netxen_adapter *adapter, __le64 mac[])
{
__le32 *pmac = (__le32 *) & mac[0];
if (netxen_get_flash_block(adapter,
NETXEN_USER_START +
offsetof(struct netxen_new_user_info,
mac_addr),
FLASH_NUM_PORTS * sizeof(u64), pmac) == -1) {
return -1;
}
if (*mac == cpu_to_le64(~0ULL)) {
if (netxen_get_flash_block(adapter,
NETXEN_USER_START_OLD +
offsetof(struct netxen_user_old_info,
mac_addr),
FLASH_NUM_PORTS * sizeof(u64),
pmac) == -1)
return -1;
if (*mac == cpu_to_le64(~0ULL))
return -1;
}
return 0;
}
/*
* Changes the CRB window to the specified window.
*/
void netxen_nic_pci_change_crbwindow(struct netxen_adapter *adapter, u32 wndw)
{
void __iomem *offset;
u32 tmp;
int count = 0;
if (adapter->curr_window == wndw)
return;
switch(adapter->ahw.pci_func) {
case 0:
offset = PCI_OFFSET_SECOND_RANGE(adapter,
NETXEN_PCIX_PH_REG(PCIX_CRB_WINDOW));
break;
case 1:
offset = PCI_OFFSET_SECOND_RANGE(adapter,
NETXEN_PCIX_PH_REG(PCIX_CRB_WINDOW_F1));
break;
case 2:
offset = PCI_OFFSET_SECOND_RANGE(adapter,
NETXEN_PCIX_PH_REG(PCIX_CRB_WINDOW_F2));
break;
case 3:
offset = PCI_OFFSET_SECOND_RANGE(adapter,
NETXEN_PCIX_PH_REG(PCIX_CRB_WINDOW_F3));
break;
default:
printk(KERN_INFO "Changing the window for PCI function "
"%d\n", adapter->ahw.pci_func);
offset = PCI_OFFSET_SECOND_RANGE(adapter,
NETXEN_PCIX_PH_REG(PCIX_CRB_WINDOW));
break;
}
/*
* Move the CRB window.
* We need to write to the "direct access" region of PCI
* to avoid a race condition where the window register has
* not been successfully written across CRB before the target
* register address is received by PCI. The direct region bypasses
* the CRB bus.
*/
if (wndw & 0x1)
wndw = NETXEN_WINDOW_ONE;
writel(wndw, offset);
/* MUST make sure window is set before we forge on... */
while ((tmp = readl(offset)) != wndw) {
printk(KERN_WARNING "%s: %s WARNING: CRB window value not "
"registered properly: 0x%08x.\n",
netxen_nic_driver_name, __FUNCTION__, tmp);
mdelay(1);
if (count >= 10)
break;
count++;
}
if (wndw == NETXEN_WINDOW_ONE)
adapter->curr_window = 1;
else
adapter->curr_window = 0;
}
int netxen_load_firmware(struct netxen_adapter *adapter)
{
int i;
u32 data, size = 0;
u32 flashaddr = NETXEN_FLASH_BASE, memaddr = NETXEN_PHANTOM_MEM_BASE;
u64 off;
void __iomem *addr;
size = NETXEN_FIRMWARE_LEN;
writel(1, NETXEN_CRB_NORMALIZE(adapter, NETXEN_ROMUSB_GLB_CAS_RST));
for (i = 0; i < size; i++) {
int retries = 10;
if (netxen_rom_fast_read(adapter, flashaddr, (int *)&data) != 0)
return -EIO;
off = netxen_nic_pci_set_window(adapter, memaddr);
addr = pci_base_offset(adapter, off);
writel(data, addr);
do {
if (readl(addr) == data)
break;
msleep(100);
writel(data, addr);
} while (--retries);
if (!retries) {
printk(KERN_ERR "%s: firmware load aborted, write failed at 0x%x\n",
netxen_nic_driver_name, memaddr);
return -EIO;
}
flashaddr += 4;
memaddr += 4;
}
udelay(100);
/* make sure Casper is powered on */
writel(0x3fff,
NETXEN_CRB_NORMALIZE(adapter, NETXEN_ROMUSB_GLB_CHIP_CLK_CTRL));
writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_ROMUSB_GLB_CAS_RST));
return 0;
}
int
netxen_nic_hw_write_wx(struct netxen_adapter *adapter, u64 off, void *data,
int len)
{
void __iomem *addr;
if (ADDR_IN_WINDOW1(off)) {
addr = NETXEN_CRB_NORMALIZE(adapter, off);
} else { /* Window 0 */
addr = pci_base_offset(adapter, off);
netxen_nic_pci_change_crbwindow(adapter, 0);
}
DPRINTK(INFO, "writing to base %lx offset %llx addr %p"
" data %llx len %d\n",
pci_base(adapter, off), off, addr,
*(unsigned long long *)data, len);
if (!addr) {
netxen_nic_pci_change_crbwindow(adapter, 1);
return 1;
}
switch (len) {
case 1:
writeb(*(u8 *) data, addr);
break;
case 2:
writew(*(u16 *) data, addr);
break;
case 4:
writel(*(u32 *) data, addr);
break;
case 8:
writeq(*(u64 *) data, addr);
break;
default:
DPRINTK(INFO,
"writing data %lx to offset %llx, num words=%d\n",
*(unsigned long *)data, off, (len >> 3));
netxen_nic_hw_block_write64((u64 __iomem *) data, addr,
(len >> 3));
break;
}
if (!ADDR_IN_WINDOW1(off))
netxen_nic_pci_change_crbwindow(adapter, 1);
return 0;
}
int
netxen_nic_hw_read_wx(struct netxen_adapter *adapter, u64 off, void *data,
int len)
{
void __iomem *addr;
if (ADDR_IN_WINDOW1(off)) { /* Window 1 */
addr = NETXEN_CRB_NORMALIZE(adapter, off);
} else { /* Window 0 */
addr = pci_base_offset(adapter, off);
netxen_nic_pci_change_crbwindow(adapter, 0);
}
DPRINTK(INFO, "reading from base %lx offset %llx addr %p\n",
pci_base(adapter, off), off, addr);
if (!addr) {
netxen_nic_pci_change_crbwindow(adapter, 1);
return 1;
}
switch (len) {
case 1:
*(u8 *) data = readb(addr);
break;
case 2:
*(u16 *) data = readw(addr);
break;
case 4:
*(u32 *) data = readl(addr);
break;
case 8:
*(u64 *) data = readq(addr);
break;
default:
netxen_nic_hw_block_read64((u64 __iomem *) data, addr,
(len >> 3));
break;
}
DPRINTK(INFO, "read %lx\n", *(unsigned long *)data);
if (!ADDR_IN_WINDOW1(off))
netxen_nic_pci_change_crbwindow(adapter, 1);
return 0;
}
void netxen_nic_reg_write(struct netxen_adapter *adapter, u64 off, u32 val)
{ /* Only for window 1 */
void __iomem *addr;
addr = NETXEN_CRB_NORMALIZE(adapter, off);
DPRINTK(INFO, "writing to base %lx offset %llx addr %p data %x\n",
pci_base(adapter, off), off, addr, val);
writel(val, addr);
}
int netxen_nic_reg_read(struct netxen_adapter *adapter, u64 off)
{ /* Only for window 1 */
void __iomem *addr;
int val;
addr = NETXEN_CRB_NORMALIZE(adapter, off);
DPRINTK(INFO, "reading from base %lx offset %llx addr %p\n",
pci_base(adapter, off), off, addr);
val = readl(addr);
writel(val, addr);
return val;
}
/* Change the window to 0, write and change back to window 1. */
void netxen_nic_write_w0(struct netxen_adapter *adapter, u32 index, u32 value)
{
void __iomem *addr;
netxen_nic_pci_change_crbwindow(adapter, 0);
addr = pci_base_offset(adapter, index);
writel(value, addr);
netxen_nic_pci_change_crbwindow(adapter, 1);
}
/* Change the window to 0, read and change back to window 1. */
void netxen_nic_read_w0(struct netxen_adapter *adapter, u32 index, u32 * value)
{
void __iomem *addr;
addr = pci_base_offset(adapter, index);
netxen_nic_pci_change_crbwindow(adapter, 0);
*value = readl(addr);
netxen_nic_pci_change_crbwindow(adapter, 1);
}
static int netxen_pci_set_window_warning_count;
static unsigned long netxen_nic_pci_set_window(struct netxen_adapter *adapter,
unsigned long long addr)
{
static int ddr_mn_window = -1;
static int qdr_sn_window = -1;
int window;
if (ADDR_IN_RANGE(addr, NETXEN_ADDR_DDR_NET, NETXEN_ADDR_DDR_NET_MAX)) {
/* DDR network side */
addr -= NETXEN_ADDR_DDR_NET;
window = (addr >> 25) & 0x3ff;
if (ddr_mn_window != window) {
ddr_mn_window = window;
writel(window, PCI_OFFSET_SECOND_RANGE(adapter,
NETXEN_PCIX_PH_REG
(PCIX_MN_WINDOW(adapter->ahw.pci_func))));
/* MUST make sure window is set before we forge on... */
readl(PCI_OFFSET_SECOND_RANGE(adapter,
NETXEN_PCIX_PH_REG
(PCIX_MN_WINDOW(adapter->ahw.pci_func))));
}
addr -= (window * NETXEN_WINDOW_ONE);
addr += NETXEN_PCI_DDR_NET;
} else if (ADDR_IN_RANGE(addr, NETXEN_ADDR_OCM0, NETXEN_ADDR_OCM0_MAX)) {
addr -= NETXEN_ADDR_OCM0;
addr += NETXEN_PCI_OCM0;
} else if (ADDR_IN_RANGE(addr, NETXEN_ADDR_OCM1, NETXEN_ADDR_OCM1_MAX)) {
addr -= NETXEN_ADDR_OCM1;
addr += NETXEN_PCI_OCM1;
} else
if (ADDR_IN_RANGE
(addr, NETXEN_ADDR_QDR_NET, NETXEN_ADDR_QDR_NET_MAX)) {
/* QDR network side */
addr -= NETXEN_ADDR_QDR_NET;
window = (addr >> 22) & 0x3f;
if (qdr_sn_window != window) {
qdr_sn_window = window;
writel((window << 22),
PCI_OFFSET_SECOND_RANGE(adapter,
NETXEN_PCIX_PH_REG
(PCIX_SN_WINDOW(adapter->ahw.pci_func))));
/* MUST make sure window is set before we forge on... */
readl(PCI_OFFSET_SECOND_RANGE(adapter,
NETXEN_PCIX_PH_REG
(PCIX_SN_WINDOW(adapter->ahw.pci_func))));
}
addr -= (window * 0x400000);
addr += NETXEN_PCI_QDR_NET;
} else {
/*
* peg gdb frequently accesses memory that doesn't exist,
* this limits the chit chat so debugging isn't slowed down.
*/
if ((netxen_pci_set_window_warning_count++ < 8)
|| (netxen_pci_set_window_warning_count % 64 == 0))
printk("%s: Warning:netxen_nic_pci_set_window()"
" Unknown address range!\n",
netxen_nic_driver_name);
}
return addr;
}
#if 0
int
netxen_nic_erase_pxe(struct netxen_adapter *adapter)
{
if (netxen_rom_fast_write(adapter, NETXEN_PXE_START, 0) == -1) {
printk(KERN_ERR "%s: erase pxe failed\n",
netxen_nic_driver_name);
return -1;
}
return 0;
}
#endif /* 0 */
int netxen_nic_get_board_info(struct netxen_adapter *adapter)
{
int rv = 0;
int addr = NETXEN_BRDCFG_START;
struct netxen_board_info *boardinfo;
int index;
u32 *ptr32;
boardinfo = &adapter->ahw.boardcfg;
ptr32 = (u32 *) boardinfo;
for (index = 0; index < sizeof(struct netxen_board_info) / sizeof(u32);
index++) {
if (netxen_rom_fast_read(adapter, addr, ptr32) == -1) {
return -EIO;
}
ptr32++;
addr += sizeof(u32);
}
if (boardinfo->magic != NETXEN_BDINFO_MAGIC) {
printk("%s: ERROR reading %s board config."
" Read %x, expected %x\n", netxen_nic_driver_name,
netxen_nic_driver_name,
boardinfo->magic, NETXEN_BDINFO_MAGIC);
rv = -1;
}
if (boardinfo->header_version != NETXEN_BDINFO_VERSION) {
printk("%s: Unknown board config version."
" Read %x, expected %x\n", netxen_nic_driver_name,
boardinfo->header_version, NETXEN_BDINFO_VERSION);
rv = -1;
}
DPRINTK(INFO, "Discovered board type:0x%x ", boardinfo->board_type);
switch ((netxen_brdtype_t) boardinfo->board_type) {
case NETXEN_BRDTYPE_P2_SB35_4G:
adapter->ahw.board_type = NETXEN_NIC_GBE;
break;
case NETXEN_BRDTYPE_P2_SB31_10G:
case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
adapter->ahw.board_type = NETXEN_NIC_XGBE;
break;
case NETXEN_BRDTYPE_P1_BD:
case NETXEN_BRDTYPE_P1_SB:
case NETXEN_BRDTYPE_P1_SMAX:
case NETXEN_BRDTYPE_P1_SOCK:
adapter->ahw.board_type = NETXEN_NIC_GBE;
break;
default:
printk("%s: Unknown(%x)\n", netxen_nic_driver_name,
boardinfo->board_type);
break;
}
return rv;
}
/* NIU access sections */
int netxen_nic_set_mtu_gb(struct netxen_adapter *adapter, int new_mtu)
{
netxen_nic_write_w0(adapter,
NETXEN_NIU_GB_MAX_FRAME_SIZE(
physical_port[adapter->portnum]), new_mtu);
return 0;
}
int netxen_nic_set_mtu_xgb(struct netxen_adapter *adapter, int new_mtu)
{
new_mtu += NETXEN_NIU_HDRSIZE + NETXEN_NIU_TLRSIZE;
if (physical_port[adapter->portnum] == 0)
netxen_nic_write_w0(adapter, NETXEN_NIU_XGE_MAX_FRAME_SIZE,
new_mtu);
else
netxen_nic_write_w0(adapter, NETXEN_NIU_XG1_MAX_FRAME_SIZE,
new_mtu);
return 0;
}
void netxen_nic_init_niu_gb(struct netxen_adapter *adapter)
{
netxen_niu_gbe_init_port(adapter, physical_port[adapter->portnum]);
}
void
netxen_crb_writelit_adapter(struct netxen_adapter *adapter, unsigned long off,
int data)
{
void __iomem *addr;
if (ADDR_IN_WINDOW1(off)) {
writel(data, NETXEN_CRB_NORMALIZE(adapter, off));
} else {
netxen_nic_pci_change_crbwindow(adapter, 0);
addr = pci_base_offset(adapter, off);
writel(data, addr);
netxen_nic_pci_change_crbwindow(adapter, 1);
}
}
void netxen_nic_set_link_parameters(struct netxen_adapter *adapter)
{
__u32 status;
__u32 autoneg;
__u32 mode;
netxen_nic_read_w0(adapter, NETXEN_NIU_MODE, &mode);
if (netxen_get_niu_enable_ge(mode)) { /* Gb 10/100/1000 Mbps mode */
if (adapter->phy_read
&& adapter->
phy_read(adapter,
NETXEN_NIU_GB_MII_MGMT_ADDR_PHY_STATUS,
&status) == 0) {
if (netxen_get_phy_link(status)) {
switch (netxen_get_phy_speed(status)) {
case 0:
adapter->link_speed = SPEED_10;
break;
case 1:
adapter->link_speed = SPEED_100;
break;
case 2:
adapter->link_speed = SPEED_1000;
break;
default:
adapter->link_speed = -1;
break;
}
switch (netxen_get_phy_duplex(status)) {
case 0:
adapter->link_duplex = DUPLEX_HALF;
break;
case 1:
adapter->link_duplex = DUPLEX_FULL;
break;
default:
adapter->link_duplex = -1;
break;
}
if (adapter->phy_read
&& adapter->
phy_read(adapter,
NETXEN_NIU_GB_MII_MGMT_ADDR_AUTONEG,
&autoneg) != 0)
adapter->link_autoneg = autoneg;
} else
goto link_down;
} else {
link_down:
adapter->link_speed = -1;
adapter->link_duplex = -1;
}
}
}
void netxen_nic_flash_print(struct netxen_adapter *adapter)
{
int valid = 1;
u32 fw_major = 0;
u32 fw_minor = 0;
u32 fw_build = 0;
char brd_name[NETXEN_MAX_SHORT_NAME];
struct netxen_new_user_info user_info;
int i, addr = NETXEN_USER_START;
__le32 *ptr32;
struct netxen_board_info *board_info = &(adapter->ahw.boardcfg);
if (board_info->magic != NETXEN_BDINFO_MAGIC) {
printk
("NetXen Unknown board config, Read 0x%x expected as 0x%x\n",
board_info->magic, NETXEN_BDINFO_MAGIC);
valid = 0;
}
if (board_info->header_version != NETXEN_BDINFO_VERSION) {
printk("NetXen Unknown board config version."
" Read %x, expected %x\n",
board_info->header_version, NETXEN_BDINFO_VERSION);
valid = 0;
}
if (valid) {
ptr32 = (u32 *) & user_info;
for (i = 0;
i < sizeof(struct netxen_new_user_info) / sizeof(u32);
i++) {
if (netxen_rom_fast_read(adapter, addr, ptr32) == -1) {
printk("%s: ERROR reading %s board userarea.\n",
netxen_nic_driver_name,
netxen_nic_driver_name);
return;
}
ptr32++;
addr += sizeof(u32);
}
get_brd_name_by_type(board_info->board_type, brd_name);
printk("NetXen %s Board S/N %s Chip id 0x%x\n",
brd_name, user_info.serial_num, board_info->chip_id);
printk("NetXen %s Board #%d, Chip id 0x%x\n",
board_info->board_type == 0x0b ? "XGB" : "GBE",
board_info->board_num, board_info->chip_id);
fw_major = readl(NETXEN_CRB_NORMALIZE(adapter,
NETXEN_FW_VERSION_MAJOR));
fw_minor = readl(NETXEN_CRB_NORMALIZE(adapter,
NETXEN_FW_VERSION_MINOR));
fw_build =
readl(NETXEN_CRB_NORMALIZE(adapter, NETXEN_FW_VERSION_SUB));
printk("NetXen Firmware version %d.%d.%d\n", fw_major, fw_minor,
fw_build);
}
if (fw_major != _NETXEN_NIC_LINUX_MAJOR) {
printk(KERN_ERR "The mismatch in driver version and firmware "
"version major number\n"
"Driver version major number = %d \t"
"Firmware version major number = %d \n",
_NETXEN_NIC_LINUX_MAJOR, fw_major);
adapter->driver_mismatch = 1;
}
if (fw_minor != _NETXEN_NIC_LINUX_MINOR &&
fw_minor != (_NETXEN_NIC_LINUX_MINOR + 1)) {
printk(KERN_ERR "The mismatch in driver version and firmware "
"version minor number\n"
"Driver version minor number = %d \t"
"Firmware version minor number = %d \n",
_NETXEN_NIC_LINUX_MINOR, fw_minor);
adapter->driver_mismatch = 1;
}
if (adapter->driver_mismatch)
printk(KERN_INFO "Use the driver with version no %d.%d.xxx\n",
fw_major, fw_minor);
}
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