diff -Naru linux-2.6.16.18.orig/drivers/net/netxen/netxen_nic_init.c
linux-2.6.16.18/drivers/net/netxen/netxen_nic_init.c
--- linux-2.6.16.18.orig/drivers/net/netxen/netxen_nic_init.c 1969-12-31
16:00:00.000000000 -0800
+++ linux-2.6.16.18/drivers/net/netxen/netxen_nic_init.c 2006-05-25
02:43:22.000000000 -0700
@@ -0,0 +1,1219 @@
+/*
+ * 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:
+ * [EMAIL PROTECTED]
+ * NetXen,
+ * 3965 Freedom Circle, Fourth floor,
+ * Santa Clara, CA 95054
+ *
+ *
+ * Source file for NIC routines to initialize the Phantom Hardware
+ *
+ */
+
+#include <linux/netdevice.h>
+#include <linux/delay.h>
+#include "netxen_nic.h"
+#include "netxen_nic_hw.h"
+#include "netxen_nic_ioctl.h"
+#include "netxen_nic_phan_reg.h"
+
+struct crb_addr_pair {
+ long addr;
+ long data;
+};
+
+#define NETXEN_MAX_CRB_XFORM 60
+static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
+#define NETXEN_ADDR_ERROR ((unsigned long ) 0xffffffff )
+
+#define crb_addr_transform(name) \
+ crb_addr_xform[NETXEN_HW_PX_MAP_CRB_##name] = \
+ NETXEN_HW_CRB_HUB_AGT_ADR_##name << 20
+
+#define NETXEN_FLASH_BASE (BOOTLD_START)
+#define NETXEN_PHANTOM_MEM_BASE (NETXEN_FLASH_BASE)
+
+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);
+}
+
+int init_firmware(struct netxen_adapter *adapter)
+{
+ u32 state = 0, loops = 0, err = 0;
+
+ /* Window 1 call */
+ read_lock(&adapter->adapter_lock);
+ state = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE));
+ read_unlock(&adapter->adapter_lock);
+
+ while (state != PHAN_INITIALIZE_COMPLETE && loops < 200000) {
+ udelay(100);
+ /* Window 1 call */
+ read_lock(&adapter->adapter_lock);
+ state = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE));
+ read_unlock(&adapter->adapter_lock);
+
+ loops++;
+ }
+ if (loops >= 200000) {
+ printk(KERN_ERR "Cmd Peg initialization not complete:%x.\n",
+ state);
+ err = -EIO;
+ return err;
+ }
+ /* Window 1 call */
+ read_lock(&adapter->adapter_lock);
+ writel(PHAN_INITIALIZE_ACK,
+ NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE));
+ read_unlock(&adapter->adapter_lock);
+
+ return err;
+}
+
+void initialize_adapter_sw(struct netxen_adapter *adapter)
+{
+ int ctx, ring;
+ u32 i;
+ u32 num_rx_bufs = 0;
+ struct netxen_rcv_desc_ctx *rcv_desc;
+
+ adapter->free_cmd_count = adapter->max_tx_desc_count;
+ DPRINTK(INFO, "initializing some queues: %p\n", adapter);
+ for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
+ for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
+ struct netxen_rx_buffer *rx_buf;
+ rcv_desc = &adapter->recv_ctx[ctx].rcv_desc[ring];
+ rcv_desc->rcv_free = rcv_desc->max_rx_desc_count;
+ rcv_desc->begin_alloc = 0;
+ rx_buf = rcv_desc->rx_buf_arr;
+ num_rx_bufs = rcv_desc->max_rx_desc_count;
+ /*
+ * Now go through all of them, set reference handles
+ * and put them in the queues.
+ */
+ for (i = 0; i < num_rx_bufs; i++) {
+ rx_buf->ref_handle = i;
+ rx_buf->state = NETXEN_BUFFER_FREE;
+
+ DPRINTK(INFO, "Rx buf:ctx%d i(%d) rx_buf:"
+ "%p\n", ctx, i, rx_buf);
+ rx_buf++;
+ }
+ }
+ }
+ DPRINTK(INFO, "initialized buffers for %s and %s\n",
+ "adapter->free_cmd_buf_list", "adapter->free_rxbuf");
+}
+
+int initialize_adapter_hw(struct netxen_adapter *adapter)
+{
+ u32 value = 0;
+
+ if (netxen_nic_get_board_info(adapter) != 0)
+ printk("%s: Error getting board config info.\n",
+ netxen_nic_driver_name);
+
+ switch (adapter->ahw.board_type) {
+ case NETXEN_NIC_GBE:
+ adapter->ahw.max_ports = 4;
+ break;
+
+ case NETXEN_NIC_XGBE:
+ adapter->ahw.max_ports = 1;
+ break;
+
+ default:
+ printk(KERN_ERR "%s: Unknown board type\n",
+ netxen_nic_driver_name);
+ }
+
+ return value;
+}
+
+/*
+ * netxen_decode_crb_addr(0 - utility to translate from internal Phantom
+ * CRB address to external PCI CRB address.
+ */
+unsigned long netxen_decode_crb_addr(unsigned long addr)
+{
+ int i;
+ unsigned long base_addr, offset, pci_base;
+
+ crb_addr_transform_setup();
+
+ pci_base = NETXEN_ADDR_ERROR;
+ base_addr = addr & 0xfff00000;
+ offset = addr & 0x000fffff;
+
+ for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
+ if (crb_addr_xform[i] == base_addr) {
+ pci_base = i << 20;
+ break;
+ }
+ }
+ if (pci_base == NETXEN_ADDR_ERROR)
+ return pci_base;
+ else
+ return (pci_base + offset);
+}
+
+static long rom_max_timeout = 10000;
+static long rom_lock_timeout = 100000000;
+
+int rom_lock(struct netxen_adapter *adapter)
+{
+ int iter;
+ int done = 0, timeout = 0;
+
+ while (!done) {
+ /* acquire semaphore2 from PCI HW block */
+ netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(PCIE_SEM2_LOCK),
+ &done);
+ if (done == 1)
+ break;
+ if (timeout >= rom_lock_timeout)
+ return -1;
+
+ timeout++;
+ /*
+ * Yield CPU
+ */
+ if (!in_atomic())
+ schedule();
+ else {
+ for (iter = 0; iter < 20; iter++)
+ cpu_relax(); /*This a nop instr on i386 */
+ }
+ }
+ netxen_nic_reg_write(adapter, NETXEN_ROM_LOCK_ID, ROM_LOCK_DRIVER);
+ return 0;
+}
+
+void rom_unlock(struct netxen_adapter *adapter)
+{
+ int val;
+
+ /* release semaphore2 */
+ netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(PCIE_SEM2_UNLOCK), &val);
+
+}
+
+int netxen_wait_rom_done(struct netxen_adapter *adapter)
+{
+ long timeout = 0;
+ long done = 0;
+
+ while (done == 0) {
+ done = netxen_nic_reg_read(adapter, NETXEN_ROMUSB_GLB_STATUS);
+ done &= 2;
+ timeout++;
+ if (timeout >= rom_max_timeout) {
+ printk("Timeout reached waiting for rom done");
+ return -1;
+ }
+ }
+ return 0;
+}
+
+int do_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
+{
+ netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
+ netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
+ udelay(100); /* prevent bursting on CRB */
+ netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
+ netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
+ if (netxen_wait_rom_done(adapter)) {
+ printk("Error waiting for rom done\n");
+ return -1;
+ }
+ /* reset abyte_cnt and dummy_byte_cnt */
+ netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
+ udelay(100); /* prevent bursting on CRB */
+ netxen_nic_reg_write(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
+
+ *valp = netxen_nic_reg_read(adapter, NETXEN_ROMUSB_ROM_RDATA);
+ return 0;
+}
+
+int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
+{
+ int ret;
+
+ if (rom_lock(adapter) != 0)
+ return -1;
+
+ ret = do_rom_fast_read(adapter, addr, valp);
+ rom_unlock(adapter);
+ return ret;
+}
+
+int pinit_from_rom(struct netxen_adapter *adapter, int verbose)
+{
+ int addr, val, status;
+ int n, i;
+ int init_delay = 0;
+ struct crb_addr_pair *buf;
+ unsigned long off;
+ unsigned long flags;
+
+ /* resetall */
+ status = netxen_nic_get_board_info(adapter);
+ if (status)
+ printk("%s: pinit_from_rom: Error getting board info\n",
+ netxen_nic_driver_name);
+
+ netxen_crb_writelit_adapter(adapter, NETXEN_ROMUSB_GLB_SW_RESET,
+ 0xffffffff);
+
+ if (verbose) {
+ int val;
+ if (netxen_rom_fast_read(adapter, 0x4008, &val) == 0)
+ printk("P2 ROM board type: 0x%08x\n", val);
+ else
+ printk("Could not read board type\n");
+ if (netxen_rom_fast_read(adapter, 0x400c, &val) == 0)
+ printk("P2 ROM board num: 0x%08x\n", val);
+ else
+ printk("Could not read board number\n");
+ if (netxen_rom_fast_read(adapter, 0x4010, &val) == 0)
+ printk("P2 ROM chip num: 0x%08x\n", val);
+ else
+ printk("Could not read chip number\n");
+ }
+
+ if (netxen_rom_fast_read(adapter, 0, &n) == 0 && (n & 0x800000000ULL)) {
+ n &= ~0x80000000ULL;
+ if (n < 1024) {
+ if (verbose)
+ printk("%s: %d CRB init values found"
+ " in ROM.\n", netxen_nic_driver_name, n);
+ } else {
+ printk("%s:n=0x%x Error! NetXen card flash not"
+ " initialized.\n", __FUNCTION__, n);
+ return -1;
+ }
+ buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
+ if (buf == NULL) {
+ printk("%s: pinit_from_rom: Unable to calloc memory.\n",
+ netxen_nic_driver_name);
+ return -1;
+ }
+ for (i = 0; i < n; i++) {
+ if (netxen_rom_fast_read(adapter, 8 * i + 4, &val) != 0
+ || netxen_rom_fast_read(adapter, 8 * i + 8,
+ &addr) != 0)
+ goto error_ret;
+
+ buf[i].addr = addr;
+ buf[i].data = val;
+
+ if (verbose)
+ printk("%s: PCI: 0x%08x == 0x%08x\n",
+ netxen_nic_driver_name, (unsigned int)
+ netxen_decode_crb_addr((unsigned long)
+ addr), val);
+ }
+ for (i = 0; i < n; i++) {
+
+ off =
+ netxen_decode_crb_addr((unsigned long)buf[i].addr) +
+ NETXEN_PCI_CRBSPACE;
+ /* skipping cold reboot MAGIC */
+ if (off == NETXEN_CAM_RAM(0x1fc))
+ continue;
+
+ /* After writing this register, HW needs time for CRB */
+ /* to quiet down (else crb_window returns 0xffffffff) */
+ if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
+ init_delay = 1;
+ /* hold xdma in reset also */
+ buf[i].data = 0x8000ff;
+ }
+
+ if (ADDR_IN_WINDOW1(off)) {
+ read_lock(&adapter->adapter_lock);
+ writel(buf[i].data,
+ NETXEN_CRB_NORMALIZE(adapter, off));
+ read_unlock(&adapter->adapter_lock);
+ } else {
+ write_lock_irqsave(&adapter->adapter_lock,
+ flags);
+ netxen_nic_pci_change_crbwindow(adapter, 0);
+ off = adapter->ahw.pci_base + off;
+ writel(buf[i].data, (void *)off);
+ netxen_nic_pci_change_crbwindow(adapter, 1);
+ write_unlock_irqrestore(&adapter->adapter_lock,
+ flags);
+ }
+ if (init_delay == 1) {
+ msleep(1000);
+ init_delay = 0;
+ }
+ msleep(1);
+ }
+ kfree(buf);
+
+ /* disable_peg_cache_all */
+
+ /* unreset_net_cache */
+ netxen_nic_hw_read_wx(adapter, NETXEN_ROMUSB_GLB_SW_RESET, &val,
+ 4);
+ netxen_crb_writelit_adapter(adapter, NETXEN_ROMUSB_GLB_SW_RESET,
+ (val & 0xffffff0f));
+ /* p2dn replyCount */
+ netxen_crb_writelit_adapter(adapter,
+ NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
+ /* disable_peg_cache 0 */
+ netxen_crb_writelit_adapter(adapter,
+ NETXEN_CRB_PEG_NET_D + 0x4c, 8);
+ /* disable_peg_cache 1 */
+ netxen_crb_writelit_adapter(adapter,
+ NETXEN_CRB_PEG_NET_I + 0x4c, 8);
+
+ /* peg_clr_all */
+
+ /* peg_clr 0 */
+ netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_0 + 0x8,
+ 0);
+ netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_0 + 0xc,
+ 0);
+ /* peg_clr 1 */
+ netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_1 + 0x8,
+ 0);
+ netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_1 + 0xc,
+ 0);
+ /* peg_clr 2 */
+ netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_2 + 0x8,
+ 0);
+ netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_2 + 0xc,
+ 0);
+ /* peg_clr 3 */
+ netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_3 + 0x8,
+ 0);
+ netxen_crb_writelit_adapter(adapter, NETXEN_CRB_PEG_NET_3 + 0xc,
+ 0);
+ }
+ return 0;
+ error_ret:
+ return -1;
+}
+
+void phantom_init(struct netxen_adapter *adapter)
+{
+ u32 val = 0;
+ int loops = 0;
+
+ read_lock(&adapter->adapter_lock);
+ netxen_nic_hw_read_wx(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, &val, 4);
+ writel(1,
+ NETXEN_CRB_NORMALIZE(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE));
+
+ if (0 == val) {
+ while (val != PHAN_INITIALIZE_COMPLETE && loops < 2000000) {
+ udelay(100);
+ val =
+ readl(NETXEN_CRB_NORMALIZE
+ (adapter, CRB_CMDPEG_STATE));
+ loops++;
+ }
+ if (val != PHAN_INITIALIZE_COMPLETE)
+ printk("WARNING: Initial boot wait loop failed...\n");
+ }
+ read_unlock(&adapter->adapter_lock);
+}
+
+void load_firmware(struct netxen_adapter *adapter)
+{
+ int i;
+ long data, size = 0;
+ long flashaddr = NETXEN_FLASH_BASE, memaddr = NETXEN_PHANTOM_MEM_BASE;
+
+ size = (16 * 1024) / 4;
+ read_lock(&adapter->adapter_lock);
+ writel(1, NETXEN_CRB_NORMALIZE(adapter, NETXEN_ROMUSB_GLB_CAS_RST));
+ read_unlock(&adapter->adapter_lock);
+
+ for (i = 0; i < size; i++) {
+ if (netxen_rom_fast_read(adapter, flashaddr, (int *)&data) !=
0) {
+ DPRINTK(ERR,
+ "Error in netxen_rom_fast_read(). Will skip"
+ "loading flash image\n");
+ return;
+ }
+ netxen_nic_pci_mem_write(adapter, memaddr, &data, 4);
+ flashaddr += 4;
+ memaddr += 4;
+ }
+ udelay(100);
+ read_lock(&adapter->adapter_lock);
+ /* 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));
+ read_unlock(&adapter->adapter_lock);
+
+ udelay(10000);
+}
+
+int netxen_nic_rx_has_work(struct netxen_adapter *adapter)
+{
+ int ctx;
+
+ for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
+ struct netxen_recv_context *recv_ctx =
+ &(adapter->recv_ctx[ctx]);
+ u32 consumer;
+ struct status_desc_t *desc_head;
+ struct status_desc_t *desc; /* used to read status desc
here */
+
+ consumer = recv_ctx->status_rx_consumer;
+ desc_head = recv_ctx->rcv_status_desc_head;
+ desc = &desc_head[consumer];
+
+ if ((desc->owner & STATUS_OWNER_HOST))
+ return 1;
+ }
+
+ return 0;
+}
+
+void netxen_watchdog_task(unsigned long v)
+{
+ int port_num;
+ struct netxen_port *port;
+ struct net_device *netdev;
+ struct netxen_adapter *adapter = (struct netxen_adapter *)v;
+ unsigned long flags;
+
+ if (adapter->driver_mismatch) {
+ /* We return without turning on the netdev queue as there
+ * was a mismatch in driver and firmware version
+ */
+ return;
+ }
+ for (port_num = 0; port_num < adapter->ahw.max_ports; port_num++) {
+ port = adapter->port[port_num];
+ netdev = port->netdev;
+
+ if ((netdev->flags & IFF_UP) && !netif_carrier_ok(netdev)) {
+ printk(KERN_INFO "%s port %d, %s carrier is now ok\n",
+ netxen_nic_driver_name, port_num, netdev->name);
+ netif_carrier_on(netdev);
+ }
+
+ if (netif_queue_stopped(netdev))
+ netif_wake_queue(netdev);
+ }
+
+ write_lock_irqsave(&adapter->adapter_lock, flags);
+ netxen_nic_pci_change_crbwindow(adapter, 1);
+ write_unlock_irqrestore(&adapter->adapter_lock, flags);
+
+ netxen_nic_handle_phy_intr(adapter);
+ mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
+}
+
+/*
+ * netxen_process_rcv() send the received packet to the protocol stack.
+ * and if the number of receives exceeds RX_BUFFERS_REFILL, then we
+ * invoke the routine to send more rx buffers to the Phantom...
+ */
+inline void
+netxen_process_rcv(struct netxen_adapter *adapter, int ctx,
+ struct status_desc_t *desc)
+{
+ struct netxen_port *port = adapter->port[desc->port];
+ struct pci_dev *pdev = port->pdev;
+ struct net_device *netdev = port->netdev;
+ int index = desc->reference_handle;
+ struct netxen_recv_context *recv_ctx = &(adapter->recv_ctx[ctx]);
+ struct netxen_rx_buffer *buffer;
+ struct sk_buff *skb;
+ u32 length = desc->total_length;
+ u32 desc_ctx;
+ struct netxen_rcv_desc_ctx *rcv_desc;
+ int ret;
+
+ desc_ctx = desc->type;
+ if (unlikely(desc_ctx >= NUM_RCV_DESC_RINGS)) {
+ printk("%s: %s Bad Rcv descriptor ring\n",
+ netxen_nic_driver_name, netdev->name);
+ return;
+ }
+
+ rcv_desc = &recv_ctx->rcv_desc[desc_ctx];
+ buffer = &rcv_desc->rx_buf_arr[index];
+
+ pci_unmap_single(pdev, buffer->dma, rcv_desc->dma_size,
+ PCI_DMA_FROMDEVICE);
+
+ skb = (struct sk_buff *)buffer->skb;
+
+ if (unlikely(skb == NULL)) {
+ /*
+ * This should not happen and if it does, it is serious,
+ * catch it
+ */
+ u32 temp1, temp2;
+ /* Window = 0 or 1 */
+ read_lock(&adapter->adapter_lock);
+ temp1 = readl((void *)(adapter->ahw.pci_base
+ + (NETXEN_CRB_PCIE + 0x20000)));
+ temp2 = readl((void *)(adapter->ahw.pci_base
+ + (NETXEN_CRB_PCIE + 0x20008)));
+
+ read_unlock(&adapter->adapter_lock);
+
+ /* Window = 0 */
+ netxen_nic_write_w0(adapter, NETXEN_CRB_PEG_NET_0 + 0x3c, 1);
+ netxen_nic_write_w0(adapter, NETXEN_CRB_PEG_NET_1 + 0x3c, 1);
+ netxen_nic_write_w0(adapter, NETXEN_CRB_PEG_NET_2 + 0x3c, 1);
+ netxen_nic_write_w0(adapter, NETXEN_CRB_PEG_NET_3 + 0x3c, 1);
+ netxen_nic_write_w0(adapter, NETXEN_CRB_NIU + 0x70000, 0);
+
+ printk("%s: %s Halted the pegs and stopped the NIU consumer\n",
+ netxen_nic_driver_name, netdev->name);
+ printk("Curr DMA Addr: 0x%x, status:0x%x\n", temp1, temp2);
+ printk("got NULL skb for index %d desc %p\n", index, desc);
+ printk("prev desc %p: refh:%x\n", desc - 1,
+ (desc - 1)->reference_handle);
+ printk("next desc %p: refh:%x\n", desc + 1,
+ (desc + 1)->reference_handle);
+ printk("next desc %p: refh:%x\n", desc + 2,
+ (desc + 2)->reference_handle);
+ printk("and mine again %p: refh:%x\n", desc,
+ (desc)->reference_handle);
+
+ port->stats.rcvdbadskb++;
+ return;
+ }
+
+ if (likely(desc->status == STATUS_CKSUM_OK)) {
+ port->stats.csummed++;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ } else
+ skb->ip_summed = CHECKSUM_NONE;
+ skb->dev = netdev;
+ skb_put(skb, length);
+ skb->protocol = eth_type_trans(skb, netdev);
+
+ ret = netif_receive_skb(skb);
+
+ /*
+ * RH: Do we need these stats on a regular basis. Can we get it from
+ * Linux stats.
+ */
+ switch (ret) {
+ case NET_RX_SUCCESS:
+ port->stats.uphappy++;
+ break;
+
+ case NET_RX_CN_LOW:
+ port->stats.uplcong++;
+ break;
+
+ case NET_RX_CN_MOD:
+ port->stats.upmcong++;
+ break;
+
+ case NET_RX_CN_HIGH:
+ port->stats.uphcong++;
+ break;
+
+ case NET_RX_DROP:
+ port->stats.updropped++;
+ break;
+
+ default:
+ port->stats.updunno++;
+ break;
+ }
+
+ netdev->last_rx = jiffies;
+
+ rcv_desc->rcv_free++;
+ rcv_desc->rcv_pending--;
+
+ /*
+ * We just consumed one buffer so post a buffer.
+ */
+ adapter->stats.post_called++;
+ buffer->skb = NULL;
+ buffer->state = NETXEN_BUFFER_FREE;
+
+ port->stats.no_rcv++;
+ port->stats.rxbytes += length;
+}
+
+/* Process Receive status ring */
+u32 netxen_process_rcv_ring(struct netxen_adapter *adapter, int ctx, int max)
+{
+ struct netxen_recv_context *recv_ctx = &(adapter->recv_ctx[ctx]);
+ struct status_desc_t *desc_head = recv_ctx->rcv_status_desc_head;
+ struct status_desc_t *desc; /* used to read status desc here */
+ u32 producer = 0; /* will be read from phantom */
+ u32 consumer = recv_ctx->status_rx_consumer;
+ int count = 0, ring;
+ struct netxen_rcv_desc_ctx *rcv_desc;
+
+ DPRINTK(INFO, "procesing receive\n");
+ /*
+ * we assume in this case that there is only one port and that is
+ * port #1...changes need to be done in firmware to indicate port
+ * number as part of the descriptor. This way we will be able to get
+ * the netdev which is associated with that device.
+ */
+ while (count < max) {
+ desc = &desc_head[consumer];
+ if (!(desc->owner & STATUS_OWNER_HOST)) {
+ DPRINTK(ERR, "desc %p ownedby %x\n", desc, desc->owner);
+ break;
+ }
+ netxen_process_rcv(adapter, ctx, desc);
+ consumer = (consumer + 1) & (adapter->max_rx_desc_count - 1);
+ count++;
+ }
+ if (count) {
+ for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
+ rcv_desc = &adapter->recv_ctx[ctx].rcv_desc[ring];
+ netxen_post_rx_buffers(adapter, ctx, ring);
+ }
+ }
+
+ /* update the consumer index in phantom */
+ if (count) {
+ adapter->stats.process_rcv++;
+ recv_ctx->status_rx_consumer = consumer;
+ recv_ctx->status_rx_producer = producer;
+
+ /* Window = 1 */
+ read_lock(&adapter->adapter_lock);
+ writel(consumer,
+ NETXEN_CRB_NORMALIZE(adapter,
+ recv_crb_registers[ctx].
+ crb_rcv_status_consumer));
+ read_unlock(&adapter->adapter_lock);
+ }
+
+ return count;
+}
+
+/* Process Command status ring */
+void netxen_process_cmd_ring(unsigned long data)
+{
+ u32 last_consumer;
+ u32 consumer;
+ struct netxen_adapter *adapter = (struct netxen_adapter *)data;
+ int count = 0;
+ struct netxen_cmd_buffer *buffer;
+ struct netxen_port *port; /* port #1 */
+ struct netxen_port *nport;
+ struct pci_dev *pdev;
+ struct netxen_skb_frag *frag;
+ u32 i;
+ struct sk_buff *skb = NULL;
+ int p;
+
+ spin_lock(&adapter->tx_lock);
+ last_consumer = adapter->last_cmd_consumer;
+ DPRINTK(INFO, "procesing xmit complete\n");
+ /* we assume in this case that there is only one port and that is
+ * port #1...changes need to be done in firmware to indicate port
+ * number as part of the descriptor. This way we will be able to get
+ * the netdev which is associated with that device.
+ */
+ /* Window = 1 */
+ read_lock(&adapter->adapter_lock);
+ consumer =
+ readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMD_CONSUMER_OFFSET));
+ read_unlock(&adapter->adapter_lock);
+
+ if (last_consumer == consumer) { /* Ring is empty */
+ DPRINTK(INFO, "last_consumer %d == consumer %d\n",
+ last_consumer, consumer);
+ spin_unlock(&adapter->tx_lock);
+ return;
+ }
+
+ adapter->proc_cmd_buf_counter++;
+ adapter->stats.process_xmit++;
+ /*
+ * Not needed - does not seem to be used anywhere.
+ * adapter->cmd_consumer = consumer;
+ */
+ spin_unlock(&adapter->tx_lock);
+
+ while ((last_consumer != consumer) && (count < MAX_STATUS_HANDLE)) {
+ buffer = &adapter->cmd_buf_arr[last_consumer];
+ port = adapter->port[buffer->port];
+ pdev = port->pdev;
+ frag = &buffer->frag_array[0];
+ skb = buffer->skb;
+ if (skb && (cmpxchg(&buffer->skb, skb, 0) == skb)) {
+ pci_unmap_single(pdev, frag->dma, frag->length,
+ PCI_DMA_TODEVICE);
+ for (i = 1; i < buffer->frag_count; i++) {
+ DPRINTK(INFO, "getting fragment no %d\n", i);
+ frag++; /* Get the next frag */
+ pci_unmap_page(pdev, frag->dma, frag->length,
+ PCI_DMA_TODEVICE);
+ }
+
+ port->stats.skbfreed++;
+ dev_kfree_skb_any(skb);
+ skb = NULL;
+ } else if (adapter->proc_cmd_buf_counter == 1) {
+ port->stats.txnullskb++;
+ }
+ if (unlikely(netif_queue_stopped(port->netdev)
+ && netif_carrier_ok(port->netdev))
+ && ((jiffies - port->netdev->trans_start) >
+ port->netdev->watchdog_timeo)) {
+ schedule_work(port->adapter->tx_timeout_task +
+ port->portnum);
+ }
+
+ last_consumer = get_next_index(last_consumer,
+ adapter->max_tx_desc_count);
+ count++;
+ }
+ adapter->stats.noxmitdone += count;
+
+ count = 0;
+ spin_lock(&adapter->tx_lock);
+ if ((--adapter->proc_cmd_buf_counter) == 0) {
+ adapter->last_cmd_consumer = last_consumer;
+ while ((adapter->last_cmd_consumer != consumer)
+ && (count < MAX_STATUS_HANDLE)) {
+ buffer =
+ &adapter->cmd_buf_arr[adapter->last_cmd_consumer];
+ count++;
+ if (buffer->skb)
+ break;
+ else
+ adapter->last_cmd_consumer =
+ get_next_index(adapter->last_cmd_consumer,
+ adapter->max_tx_desc_count);
+ }
+ }
+ if (count) {
+ for (p = 0; p < adapter->ahw.max_ports; p++) {
+ nport = adapter->port[p];
+ if (netif_queue_stopped(nport->netdev)
+ && (nport->state == NETXEN_PORT_UP)
+ && (nport->flags & NETXEN_NETDEV_STATUS)) {
+ netif_wake_queue(nport->netdev);
+ nport->flags &= ~NETXEN_NETDEV_STATUS;
+ }
+ }
+ }
+
+ spin_unlock(&adapter->tx_lock);
+ DPRINTK(INFO, "last consumer is %d in %s\n", last_consumer,
+ __FUNCTION__);
+}
+
+/**
+ * netxen_post_rx_buffers puts buffer in the Phantom memory
+ **/
+void netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ctx, u32
ringid)
+{
+ struct pci_dev *pdev = adapter->ahw.pdev;
+ struct sk_buff *skb;
+ struct netxen_recv_context *recv_ctx = &(adapter->recv_ctx[ctx]);
+ struct netxen_rcv_desc_ctx *rcv_desc = NULL;
+ struct netxen_recv_crb *crbarea = &recv_crb_registers[ctx];
+ struct netxen_rcv_desc_crb *rcv_desc_crb = NULL;
+ u32 producer;
+ struct rcv_desc_t *pdesc;
+ struct netxen_rx_buffer *buffer;
+ int count = 0;
+ int index = 0;
+
+ adapter->stats.post_called++;
+ rcv_desc = &recv_ctx->rcv_desc[ringid];
+ rcv_desc_crb = &crbarea->rcv_desc_crb[ringid];
+
+ producer = rcv_desc->producer;
+ index = rcv_desc->begin_alloc;
+ buffer = &rcv_desc->rx_buf_arr[index];
+ /* We can start writing rx descriptors into the phantom memory. */
+ while (buffer->state == NETXEN_BUFFER_FREE) {
+ skb = dev_alloc_skb(rcv_desc->skb_size);
+ if (unlikely(!skb)) {
+ /*
+ * We need to schedule the posting of buffers to the
pegs.
+ */
+ rcv_desc->begin_alloc = index;
+ DPRINTK(ERR, "unm_post_rx_buffers: "
+ " allocated only %d buffers\n", count);
+ break;
+ }
+ count++; /* now there should be no failure */
+ pdesc = &rcv_desc->desc_head[producer];
+ skb_reserve(skb, IP_ALIGNMENT_BYTES);
+ /*
+ * This will be setup when we receive the
+ * buffer after it has been filled
+ * skb->dev = netdev;
+ */
+ buffer->skb = skb;
+ buffer->state = NETXEN_BUFFER_BUSY;
+ buffer->dma = pci_map_single(pdev, skb->data,
+ rcv_desc->dma_size,
+ PCI_DMA_FROMDEVICE);
+ /* make a rcv descriptor */
+ pdesc->reference_handle = buffer->ref_handle;
+ pdesc->buffer_length = rcv_desc->dma_size;
+ pdesc->addr_buffer = buffer->dma;
+ DPRINTK(INFO, "done writing descripter\n");
+ producer =
+ get_next_index(producer, rcv_desc->max_rx_desc_count);
+ index = get_next_index(index, rcv_desc->max_rx_desc_count);
+ buffer = &rcv_desc->rx_buf_arr[index];
+ }
+ rcv_desc->begin_alloc = index;
+
+ /* if we did allocate buffers, then write the count to Phantom */
+ if (count) {
+ rcv_desc->begin_alloc = index;
+ rcv_desc->rcv_pending += count;
+ adapter->stats.lastposted = count;
+ adapter->stats.posted += count;
+ rcv_desc->producer = producer;
+ if (rcv_desc->rcv_free >= 32) {
+ rcv_desc->rcv_free = 0;
+ /* Window = 1 */
+ read_lock(&adapter->adapter_lock);
+ writel((producer - 1) &
+ (rcv_desc->max_rx_desc_count - 1),
+ NETXEN_CRB_NORMALIZE(adapter,
+ rcv_desc_crb->
+ crb_rcv_producer_offset));
+ read_unlock(&adapter->adapter_lock);
+
+ }
+ }
+}
+
+int netxen_nic_tx_has_work(struct netxen_adapter *adapter)
+{
+ if (find_diff_among(adapter->last_cmd_consumer,
+ adapter->cmd_producer,
+ adapter->max_tx_desc_count) > 0)
+ return 1;
+
+ return 0;
+}
+
+int
+netxen_nic_fill_statistics(struct netxen_adapter *adapter,
+ struct netxen_port *port,
+ struct netxen_statistics *netxen_stats)
+{
+ unsigned long flags;
+ void *addr;
+
+ if (adapter->ahw.board_type == NETXEN_NIC_XGBE) {
+ write_lock_irqsave(&adapter->adapter_lock, flags);
+ netxen_nic_pci_change_crbwindow(adapter, 0);
+ NETXEN_NIC_LOCKED_READ_REG(NETXEN_NIU_XGE_TX_BYTE_CNT,
+ &(netxen_stats->tx_bytes));
+ NETXEN_NIC_LOCKED_READ_REG(NETXEN_NIU_XGE_TX_FRAME_CNT,
+ &(netxen_stats->tx_packets));
+ NETXEN_NIC_LOCKED_READ_REG(NETXEN_NIU_XGE_RX_BYTE_CNT,
+ &(netxen_stats->rx_bytes));
+ NETXEN_NIC_LOCKED_READ_REG(NETXEN_NIU_XGE_RX_FRAME_CNT,
+ &(netxen_stats->rx_packets));
+ NETXEN_NIC_LOCKED_READ_REG(NETXEN_NIU_XGE_AGGR_ERROR_CNT,
+ &(netxen_stats->rx_errors));
+ NETXEN_NIC_LOCKED_READ_REG(NETXEN_NIU_XGE_CRC_ERROR_CNT,
+ &(netxen_stats->rx_crc_errors));
+ NETXEN_NIC_LOCKED_READ_REG(NETXEN_NIU_XGE_OVERSIZE_FRAME_ERR,
+ &(netxen_stats->
+ rx_long_length_error));
+ NETXEN_NIC_LOCKED_READ_REG(NETXEN_NIU_XGE_UNDERSIZE_FRAME_ERR,
+ &(netxen_stats->
+ rx_short_length_error));
+
+ netxen_nic_pci_change_crbwindow(adapter, 1);
+ write_unlock_irqrestore(&adapter->adapter_lock, flags);
+ } else {
+ spin_lock_bh(&adapter->tx_lock);
+ netxen_stats->tx_bytes = port->stats.txbytes;
+ netxen_stats->tx_packets = port->stats.xmitedframes +
+ port->stats.xmitfinished;
+ netxen_stats->rx_bytes = port->stats.rxbytes;
+ netxen_stats->rx_packets = port->stats.no_rcv;
+ netxen_stats->rx_errors = port->stats.rcvdbadskb;
+ netxen_stats->tx_errors = port->stats.nocmddescriptor;
+ netxen_stats->rx_short_length_error = port->stats.uplcong;
+ netxen_stats->rx_long_length_error = port->stats.uphcong;
+ netxen_stats->rx_crc_errors = 0;
+ netxen_stats->rx_mac_errors = 0;
+ spin_unlock_bh(&adapter->tx_lock);
+ }
+ return 0;
+}
+
+void netxen_nic_clear_stats(struct netxen_adapter *adapter)
+{
+ struct netxen_port *port;
+ int port_num;
+
+ memset(&adapter->stats, 0, sizeof(adapter->stats));
+ for (port_num = 0; port_num < adapter->ahw.max_ports; port_num++) {
+ port = adapter->port[port_num];
+ memset(&port->stats, 0, sizeof(port->stats));
+ }
+}
+
+int
+netxen_nic_clear_statistics(struct netxen_adapter *adapter,
+ struct netxen_port *port)
+{
+ unsigned long flags;
+ void *addr;
+ int data = 0;
+
+ write_lock_irqsave(&adapter->adapter_lock, flags);
+ netxen_nic_pci_change_crbwindow(adapter, 0);
+
+ NETXEN_NIC_LOCKED_WRITE_REG(NETXEN_NIU_XGE_TX_BYTE_CNT, &data);
+ NETXEN_NIC_LOCKED_WRITE_REG(NETXEN_NIU_XGE_TX_FRAME_CNT, &data);
+ NETXEN_NIC_LOCKED_WRITE_REG(NETXEN_NIU_XGE_RX_BYTE_CNT, &data);
+ NETXEN_NIC_LOCKED_WRITE_REG(NETXEN_NIU_XGE_RX_FRAME_CNT, &data);
+ NETXEN_NIC_LOCKED_WRITE_REG(NETXEN_NIU_XGE_AGGR_ERROR_CNT, &data);
+ NETXEN_NIC_LOCKED_WRITE_REG(NETXEN_NIU_XGE_CRC_ERROR_CNT, &data);
+ NETXEN_NIC_LOCKED_WRITE_REG(NETXEN_NIU_XGE_OVERSIZE_FRAME_ERR, &data);
+ NETXEN_NIC_LOCKED_WRITE_REG(NETXEN_NIU_XGE_UNDERSIZE_FRAME_ERR, &data);
+
+ netxen_nic_pci_change_crbwindow(adapter, 1);
+ write_unlock_irqrestore(&adapter->adapter_lock, flags);
+ netxen_nic_clear_stats(adapter);
+ return 0;
+}
+
+int
+netxen_nic_do_ioctl(struct netxen_adapter *adapter, void *u_data,
+ struct netxen_port *port)
+{
+ struct netxen_nic_ioctl_data data;
+ struct netxen_nic_ioctl_data *up_data;
+ int retval = 0;
+ struct netxen_statistics netxen_stats;
+
+ up_data = (void *)u_data;
+
+ DPRINTK(INFO, "doing ioctl for %p\n", adapter);
+ if (copy_from_user(&data, up_data, sizeof(data))) {
+ /* evil user tried to crash the kernel */
+ DPRINTK(ERR, "bad copy from userland: %d\n", (int)sizeof(data));
+ retval = -EFAULT;
+ goto error_out;
+ }
+
+ /* Shouldn't access beyond legal limits of "char u[64];" member */
+ if (!data.ptr && (data.size > sizeof(data.u))) {
+ /* evil user tried to crash the kernel */
+ DPRINTK(ERR, "bad size: %d\n", data.size);
+ retval = -EFAULT;
+ goto error_out;
+ }
+
+ switch (data.cmd) {
+ case netxen_nic_cmd_pci_read:
+ if ((retval = netxen_nic_hw_read_wx(adapter, data.off,
+ &(data.u), data.size)))
+ goto error_out;
+ if (copy_to_user((void *)&(up_data->u), &(data.u), data.size)) {
+ DPRINTK(ERR, "bad copy to userland: %d\n",
+ (int)sizeof(data));
+ retval = -EFAULT;
+ goto error_out;
+ }
+ data.rv = 0;
+ break;
+
+ case netxen_nic_cmd_pci_write:
+ data.rv = netxen_nic_hw_write_wx(adapter, data.off, &(data.u),
+ data.size);
+ break;
+
+ case netxen_nic_cmd_pci_mem_read:
+ DPRINTK(INFO, "doing %s for %p\n",
+ "netxen_nic_cmd_pci_mm_rd", adapter);
+ netxen_nic_pci_mem_read(adapter, data.off, &(data.u),
+ data.size);
+ if (copy_to_user((void *)&(up_data->u), &(data.u), data.size)) {
+ DPRINTK(ERR, "bad copy to userland: %d\n",
+ (int)sizeof(data));
+ retval = -EFAULT;
+ goto error_out;
+ }
+ data.rv = 0;
+ DPRINTK(INFO, "read %lx\n", (unsigned long)data.u);
+ break;
+
+ case netxen_nic_cmd_pci_mem_write:
+ netxen_nic_pci_mem_write(adapter, data.off, &(data.u),
+ data.size);
+ data.rv = 0; /* write always succeeds */
+ break;
+
+ case netxen_nic_cmd_pci_config_read:
+ switch (data.size) {
+ case 1:
+ data.rv = pci_read_config_byte(adapter->ahw.pdev,
+ data.off,
+ (char *)&(data.u));
+ break;
+ case 2:
+ data.rv = pci_read_config_word(adapter->ahw.pdev,
+ data.off,
+ (short *)&(data.u));
+ break;
+ case 4:
+ data.rv = pci_read_config_dword(adapter->ahw.pdev,
+ data.off,
+ (u32 *) & (data.u));
+ break;
+ }
+ if (copy_to_user((void *)&(up_data->u), &(data.u), data.size)) {
+ DPRINTK(ERR, "bad copy to userland: %d\n",
+ (int)sizeof(data));
+ retval = -EFAULT;
+ goto error_out;
+ }
+ break;
+
+ case netxen_nic_cmd_pci_config_write:
+ switch (data.size) {
+ case 1:
+ data.rv = pci_write_config_byte(adapter->ahw.pdev,
+ data.off,
+ *(char *)&(data.u));
+ break;
+ case 2:
+ data.rv = pci_write_config_word(adapter->ahw.pdev,
+ data.off,
+ *(short *)&(data.u));
+ break;
+ case 4:
+ data.rv = pci_write_config_dword(adapter->ahw.pdev,
+ data.off,
+ *(u32 *) & (data.u));
+ break;
+ }
+ break;
+
+ case netxen_nic_cmd_get_stats:
+ data.rv =
+ netxen_nic_fill_statistics(adapter, port, &netxen_stats);
+ if (copy_to_user
+ ((void *)(up_data->ptr), (void *)&netxen_stats,
+ sizeof(struct netxen_statistics))) {
+ DPRINTK(ERR, "bad copy to userland: %d\n",
+ (int)sizeof(netxen_stats));
+ retval = -EFAULT;
+ goto error_out;
+ }
+ up_data->rv = data.rv;
+ break;
+
+ case netxen_nic_cmd_clear_stats:
+ data.rv = netxen_nic_clear_statistics(adapter, port);
+ up_data->rv = data.rv;
+ break;
+
+ case netxen_nic_cmd_get_version:
+ if (copy_to_user
+ ((void *)&(up_data->u), NETXEN_NIC_LINUX_VERSIONID,
+ sizeof(NETXEN_NIC_LINUX_VERSIONID))) {
+ DPRINTK(ERR, "bad copy to userland: %d\n",
+ (int)sizeof(data));
+ retval = -EFAULT;
+ goto error_out;
+ }
+ break;
+
+ default:
+ DPRINTK(INFO, "bad command %d for %p\n", data.cmd, adapter);
+ retval = -EOPNOTSUPP;
+ goto error_out;
+ }
+ put_user(data.rv, &(up_data->rv));
+ DPRINTK(INFO, "done ioctl for %p well.\n", adapter);
+
+ error_out:
+ return retval;
+}
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