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kernel-ark/drivers/net/netxen/netxen_nic_hw.c
dhananjay@netxen.com 3052246c81 netxen: fix crashes during module unload 
This patch fixes two problems during driver unload. The pci_disable_device()
call is before firmware reload, causing reads and writes across PCI bus after
disabling device. Second problem is the register window was wrong during
firmware reload

Signed-off by: Dhananjay Phadke <dhananjay@netxen.com>

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31 06:52:57 -04:00

1201 lines
32 KiB
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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"
#define DEFINE_GLOBAL_RECV_CRB
#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),
},
};
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)}
};
/* 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
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);
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 = (uint32_t *) (((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 < (sizeof(locs) / sizeof(locs[0])); 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, u32 * buf)
{
int i, addr;
u32 *ptr32;
addr = base;
ptr32 = buf;
for (i = 0; i < size / sizeof(u32); i++) {
if (netxen_rom_fast_read(adapter, addr, ptr32) == -1)
return -1;
*ptr32 = cpu_to_le32(*ptr32);
ptr32++;
addr += sizeof(u32);
}
if ((char *)buf + size > (char *)ptr32) {
u32 local;
if (netxen_rom_fast_read(adapter, addr, &local) == -1)
return -1;
local = cpu_to_le32(local);
memcpy(ptr32, &local, (char *)buf + size - (char *)ptr32);
}
return 0;
}
int netxen_get_flash_mac_addr(struct netxen_adapter *adapter, u64 mac[])
{
u32 *pmac = (u32 *) & 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 == ~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 == ~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);
}
int netxen_pci_set_window_warning_count = 0;
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;
}
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;
}
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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