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Message-Id: <12216652173612-git-send-email-ron.mercer@qlogic.com>
Date: Wed, 17 Sep 2008 08:26:54 -0700
From: Ron Mercer <ron.mercer@...gic.com>
To: jeff@...zik.org
Cc: netdev@...r.kernel.org, linux-driver@...gic.com,
ron.mercer@...gic.com
Subject: [PATCH 2/5] [RFC]qlge: Add drivers/net/qlge/qlge_main.c
Signed-off-by: Ron Mercer <ron.mercer@...gic.com>
---
drivers/net/qlge/qlge_main.c | 3954 ++++++++++++++++++++++++++++++++++++++++++
1 files changed, 3954 insertions(+), 0 deletions(-)
create mode 100644 drivers/net/qlge/qlge_main.c
diff --git a/drivers/net/qlge/qlge_main.c b/drivers/net/qlge/qlge_main.c
new file mode 100644
index 0000000..b50cdbf
--- /dev/null
+++ b/drivers/net/qlge/qlge_main.c
@@ -0,0 +1,3954 @@
+/*
+ * QLogic qlge NIC HBA Driver
+ * Copyright (c) 2003-2008 QLogic Corporation
+ * See LICENSE.qlge for copyright and licensing details.
+ * Author: Linux qlge network device driver by
+ * Ron Mercer <ron.mercer@...gic.com>
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/list.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/pagemap.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/dmapool.h>
+#include <linux/mempool.h>
+#include <linux/spinlock.h>
+#include <linux/kthread.h>
+#include <linux/interrupt.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <net/ipv6.h>
+#include <linux/tcp.h>
+#include <linux/udp.h>
+#include <linux/if_arp.h>
+#include <linux/if_ether.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/skbuff.h>
+#include <linux/rtnetlink.h>
+#include <linux/if_vlan.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/mm.h>
+#include <linux/vmalloc.h>
+
+#include "qlge.h"
+
+char qlge_driver_name[] = DRV_NAME;
+const char qlge_driver_version[] = DRV_VERSION;
+
+MODULE_AUTHOR("Ron Mercer <ron.mercer@...gic.com>");
+MODULE_DESCRIPTION(DRV_STRING " ");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+static const u32 default_msg =
+ NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK |
+/* NETIF_MSG_TIMER | */
+ NETIF_MSG_IFDOWN |
+ NETIF_MSG_IFUP |
+ NETIF_MSG_RX_ERR |
+ NETIF_MSG_TX_ERR |
+ NETIF_MSG_TX_QUEUED |
+ NETIF_MSG_INTR | NETIF_MSG_TX_DONE | NETIF_MSG_RX_STATUS |
+/* NETIF_MSG_PKTDATA | */
+ NETIF_MSG_HW | NETIF_MSG_WOL | 0;
+
+static int debug = 0x00007fff; /* defaults above */
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
+
+#define MSIX_IRQ 0
+#define MSI_IRQ 1
+#define LEG_IRQ 2
+static int irq_type = MSIX_IRQ;
+module_param(irq_type, int, MSIX_IRQ);
+MODULE_PARM_DESC(irq_type, "0 = MSI-X, 1 = MSI, 2 = Legacy.");
+
+static struct pci_device_id qlge_pci_tbl[] __devinitdata = {
+ {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, QLGE_DEVICE_ID)},
+ {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, QLGE_DEVICE_ID1)},
+ /* required last entry */
+ {0,}
+};
+
+MODULE_DEVICE_TABLE(pci, qlge_pci_tbl);
+
+/* This hardware semaphore causes exclusive access to
+ * resources shared between the NIC driver, MPI firmware,
+ * FCOE firmware and the FC driver.
+ */
+static int ql_sem_trylock(struct ql_adapter *qdev, u32 sem_mask)
+{
+ u32 sem_bits = 0;
+
+ switch (sem_mask) {
+ case SEM_XGMAC0_MASK:
+ sem_bits = SEM_SET << SEM_XGMAC0_SHIFT;
+ break;
+ case SEM_XGMAC1_MASK:
+ sem_bits = SEM_SET << SEM_XGMAC1_SHIFT;
+ break;
+ case SEM_ICB_MASK:
+ sem_bits = SEM_SET << SEM_ICB_SHIFT;
+ break;
+ case SEM_MAC_ADDR_MASK:
+ sem_bits = SEM_SET << SEM_MAC_ADDR_SHIFT;
+ break;
+ case SEM_FLASH_MASK:
+ sem_bits = SEM_SET << SEM_FLASH_SHIFT;
+ break;
+ case SEM_PROBE_MASK:
+ sem_bits = SEM_SET << SEM_PROBE_SHIFT;
+ break;
+ case SEM_RT_IDX_MASK:
+ sem_bits = SEM_SET << SEM_RT_IDX_SHIFT;
+ break;
+ case SEM_PROC_REG_MASK:
+ sem_bits = SEM_SET << SEM_PROC_REG_SHIFT;
+ break;
+ default:
+ QPRINTK(qdev, PROBE, ALERT, "Bad Semaphore mask!.\n");
+ return -EINVAL;
+ }
+
+ ql_write32(qdev, SEM, sem_bits | sem_mask);
+ return !(ql_read32(qdev, SEM) & sem_bits);
+}
+
+int ql_sem_spinlock(struct ql_adapter *qdev, u32 sem_mask)
+{
+ unsigned int seconds = 3;
+ do {
+ if (!ql_sem_trylock(qdev, sem_mask))
+ return 0;
+ ssleep(1);
+ } while (--seconds);
+ return -ETIMEDOUT;
+}
+
+void ql_sem_unlock(struct ql_adapter *qdev, u32 sem_mask)
+{
+ ql_write32(qdev, SEM, sem_mask);
+ ql_read32(qdev, SEM); /* flush */
+}
+
+/* This function waits for a specific bit to come ready
+ * in a given register. It is used mostly by the initialize
+ * process, but is also used in kernel thread API such as
+ * netdev->set_multi, netdev->set_mac_address, netdev->vlan_rx_add_vid.
+ */
+int ql_wait_reg_rdy(struct ql_adapter *qdev, u32 reg, u32 bit, u32 err_bit)
+{
+ u32 temp;
+ int count = UDELAY_COUNT;
+
+ while (count) {
+ temp = ql_read32(qdev, reg);
+
+ /* check for errors */
+ if (temp & err_bit) {
+ QPRINTK(qdev, PROBE, ALERT,
+ "register 0x%.08x access error, value = 0x%.08x!.\n",
+ reg, temp);
+ return -EIO;
+ } else if (temp & bit)
+ return 0;
+ udelay(UDELAY_DELAY);
+ count--;
+ }
+ QPRINTK(qdev, PROBE, ALERT,
+ "Timed out waiting for reg %x to come ready.\n", reg);
+ return -ETIMEDOUT;
+}
+
+/* The CFG register is used to download TX and RX control blocks
+ * to the chip. This function waits for an operation to complete.
+ */
+static int ql_wait_cfg(struct ql_adapter *qdev, u32 bit)
+{
+ int count = UDELAY_COUNT;
+ u32 temp;
+
+ while (count) {
+ temp = ql_read32(qdev, CFG);
+ if (temp & CFG_LE)
+ return -EIO;
+ if (!(temp & bit))
+ return 0;
+ udelay(UDELAY_DELAY);
+ count--;
+ }
+ return -ETIMEDOUT;
+}
+
+
+/* Used to issue init control blocks to hw. Maps control block,
+ * sets address, triggers download, waits for completion.
+ */
+int ql_write_cfg(struct ql_adapter *qdev, void *ptr, int size, u32 bit,
+ u16 q_id)
+{
+ u64 map;
+ int status = 0;
+ int direction;
+ u32 mask;
+ u32 value;
+
+ direction =
+ (bit & (CFG_LRQ | CFG_LR | CFG_LCQ)) ? PCI_DMA_TODEVICE :
+ PCI_DMA_FROMDEVICE;
+
+ map = pci_map_single(qdev->pdev, ptr, size, direction);
+ if (pci_dma_mapping_error(map)) {
+ QPRINTK(qdev, IFUP, ERR, "Couldn't map DMA area.\n");
+ return -ENOMEM;
+ }
+
+ status = ql_wait_cfg(qdev, bit);
+ if (status) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Timed out waiting for CFG to come ready.\n");
+ goto exit;
+ }
+
+ status = ql_sem_spinlock(qdev, SEM_ICB_MASK);
+ if (status)
+ goto exit;
+ ql_write32(qdev, ICB_L, (u32) map);
+ ql_write32(qdev, ICB_H, (u32) (map >> 32));
+ ql_sem_unlock(qdev, SEM_ICB_MASK); /* does flush too */
+
+ mask = CFG_Q_MASK | (bit << 16);
+ value = bit | (q_id << CFG_Q_SHIFT);
+ ql_write32(qdev, CFG, (mask | value));
+
+ /*
+ * Wait for the bit to clear after signaling hw.
+ */
+ status = ql_wait_cfg(qdev, bit);
+exit:
+ pci_unmap_single(qdev->pdev, map, size, direction);
+ return status;
+}
+
+/* Get a specific MAC address from the CAM. Used for debug and reg dump. */
+int ql_get_mac_addr_reg(struct ql_adapter *qdev, u32 type, u16 index,
+ u32 *value)
+{
+ u32 offset = 0;
+ int status;
+
+ status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
+ if (status)
+ return status;
+ switch (type) {
+ case MAC_ADDR_TYPE_MULTI_MAC:
+ case MAC_ADDR_TYPE_CAM_MAC:
+ {
+ status =
+ ql_wait_reg_rdy(qdev,
+ MAC_ADDR_IDX, MAC_ADDR_MW, MAC_ADDR_E);
+ if (status)
+ goto exit;
+ ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
+ (index << MAC_ADDR_IDX_SHIFT) | /* index */
+ MAC_ADDR_ADR | MAC_ADDR_RS | type); /* type */
+ status =
+ ql_wait_reg_rdy(qdev,
+ MAC_ADDR_IDX, MAC_ADDR_MR, MAC_ADDR_E);
+ if (status)
+ goto exit;
+ *value++ = ql_read32(qdev, MAC_ADDR_DATA);
+ status =
+ ql_wait_reg_rdy(qdev,
+ MAC_ADDR_IDX, MAC_ADDR_MW, MAC_ADDR_E);
+ if (status)
+ goto exit;
+ ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
+ (index << MAC_ADDR_IDX_SHIFT) | /* index */
+ MAC_ADDR_ADR | MAC_ADDR_RS | type); /* type */
+ status =
+ ql_wait_reg_rdy(qdev,
+ MAC_ADDR_IDX, MAC_ADDR_MR, MAC_ADDR_E);
+ if (status)
+ goto exit;
+ *value++ = ql_read32(qdev, MAC_ADDR_DATA);
+ if (type == MAC_ADDR_TYPE_CAM_MAC) {
+ status =
+ ql_wait_reg_rdy(qdev,
+ MAC_ADDR_IDX, MAC_ADDR_MW, MAC_ADDR_E);
+ if (status)
+ goto exit;
+ ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
+ (index << MAC_ADDR_IDX_SHIFT) | /* index */
+ MAC_ADDR_ADR | MAC_ADDR_RS | type); /* type */
+ status =
+ ql_wait_reg_rdy(qdev, MAC_ADDR_IDX,
+ MAC_ADDR_MR, MAC_ADDR_E);
+ if (status)
+ goto exit;
+ *value++ = ql_read32(qdev, MAC_ADDR_DATA);
+ }
+ break;
+ }
+ case MAC_ADDR_TYPE_VLAN:
+ case MAC_ADDR_TYPE_MULTI_FLTR:
+ default:
+ QPRINTK(qdev, IFUP, CRIT,
+ "Address type %d not yet supported.\n", type);
+ status = -EPERM;
+ }
+exit:
+ ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
+ return status;
+}
+
+/* Set up a MAC, multicast or VLAN address for the
+ * inbound frame matching.
+ */
+static int ql_set_mac_addr_reg(struct ql_adapter *qdev, u8 *addr, u32 type,
+ u16 index)
+{
+ u32 offset = 0;
+ int status = 0;
+
+ status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
+ if (status)
+ return status;
+ switch (type) {
+ case MAC_ADDR_TYPE_MULTI_MAC:
+ case MAC_ADDR_TYPE_CAM_MAC:
+ {
+ u32 cam_output;
+ u32 upper = (addr[0] << 8) | addr[1];
+ u32 lower =
+ (addr[2] << 24) | (addr[3] << 16) | (addr[4] << 8) |
+ (addr[5]);
+
+ QPRINTK(qdev, IFUP, INFO,
+ "Adding %s address %02x:%02x:%02x:%02x:%02x:%02x"
+ " at index %d in the CAM.\n",
+ ((type ==
+ MAC_ADDR_TYPE_MULTI_MAC) ? "MULTICAST" :
+ "UNICAST"), addr[0], addr[1], addr[2], addr[3],
+ addr[4], addr[5], index);
+
+ status =
+ ql_wait_reg_rdy(qdev,
+ MAC_ADDR_IDX, MAC_ADDR_MW, MAC_ADDR_E);
+ if (status)
+ goto exit;
+ ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
+ (index << MAC_ADDR_IDX_SHIFT) | /* index */
+ type); /* type */
+ ql_write32(qdev, MAC_ADDR_DATA, lower);
+ status =
+ ql_wait_reg_rdy(qdev,
+ MAC_ADDR_IDX, MAC_ADDR_MW, MAC_ADDR_E);
+ if (status)
+ goto exit;
+ ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
+ (index << MAC_ADDR_IDX_SHIFT) | /* index */
+ type); /* type */
+ ql_write32(qdev, MAC_ADDR_DATA, upper);
+ status =
+ ql_wait_reg_rdy(qdev,
+ MAC_ADDR_IDX, MAC_ADDR_MW, MAC_ADDR_E);
+ if (status)
+ goto exit;
+ ql_write32(qdev, MAC_ADDR_IDX, (offset) | /* offset */
+ (index << MAC_ADDR_IDX_SHIFT) | /* index */
+ type); /* type */
+ /* This field should also include the queue id
+ and possibly the function id. Right now we hardcode
+ the route field to NIC core.
+ */
+ if (type == MAC_ADDR_TYPE_CAM_MAC) {
+ cam_output = (CAM_OUT_ROUTE_NIC |
+ (qdev->
+ func << CAM_OUT_FUNC_SHIFT) |
+ (qdev->
+ rss_ring_first_cq_id <<
+ CAM_OUT_CQ_ID_SHIFT));
+ if (qdev->vlgrp)
+ cam_output |= CAM_OUT_RV;
+ /* route to NIC core */
+ ql_write32(qdev, MAC_ADDR_DATA, cam_output);
+ }
+ break;
+ }
+ case MAC_ADDR_TYPE_VLAN:
+ {
+ u32 enable_bit = *((u32 *) &addr[0]);
+ /* For VLAN, the addr actually holds a bit that
+ * either enables or disables the vlan id we are
+ * addressing. It's either MAC_ADDR_E on or off.
+ * That's bit-27 we're talking about.
+ */
+ QPRINTK(qdev, IFUP, INFO, "%s VLAN ID %d %s the CAM.\n",
+ (enable_bit ? "Adding" : "Removing"),
+ index, (enable_bit ? "to" : "from"));
+
+ status =
+ ql_wait_reg_rdy(qdev,
+ MAC_ADDR_IDX, MAC_ADDR_MW, MAC_ADDR_E);
+ if (status)
+ goto exit;
+ ql_write32(qdev, MAC_ADDR_IDX, offset | /* offset */
+ (index << MAC_ADDR_IDX_SHIFT) | /* index */
+ type | /* type */
+ enable_bit); /* enable/disable */
+ break;
+ }
+ case MAC_ADDR_TYPE_MULTI_FLTR:
+ default:
+ QPRINTK(qdev, IFUP, CRIT,
+ "Address type %d not yet supported.\n", type);
+ status = -EPERM;
+ }
+exit:
+ ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
+ return status;
+}
+
+/* Get a specific frame routing value from the CAM.
+ * Used for debug and reg dump.
+ */
+int ql_get_routing_reg(struct ql_adapter *qdev, u32 index, u32 *value)
+{
+ int status = 0;
+
+ status = ql_sem_spinlock(qdev, SEM_RT_IDX_MASK);
+ if (status)
+ goto exit;
+
+ status = ql_wait_reg_rdy(qdev, RT_IDX, RT_IDX_MW, RT_IDX_E);
+ if (status)
+ goto exit;
+
+ ql_write32(qdev, RT_IDX,
+ RT_IDX_TYPE_NICQ | RT_IDX_RS | (index << RT_IDX_IDX_SHIFT));
+ status = ql_wait_reg_rdy(qdev, RT_IDX, RT_IDX_MR, RT_IDX_E);
+ if (status)
+ goto exit;
+ *value = ql_read32(qdev, RT_DATA);
+exit:
+ ql_sem_unlock(qdev, SEM_RT_IDX_MASK);
+ return status;
+}
+
+/* The NIC function for this chip has 16 routing indexes. Each one can be used
+ * to route different frame types to various inbound queues. We send broadcast/
+ * multicast/error frames to the default queue for slow handling,
+ * and CAM hit/RSS frames to the fast handling queues.
+ */
+static int ql_set_routing_reg(struct ql_adapter *qdev, u32 index, u32 mask,
+ int enable)
+{
+ int status;
+ u32 value = 0;
+
+ status = ql_sem_spinlock(qdev, SEM_RT_IDX_MASK);
+ if (status)
+ return status;
+
+ QPRINTK(qdev, IFUP, DEBUG,
+ "%s %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s mask %s the routing reg.\n",
+ (enable ? "Adding" : "Removing"),
+ ((index == RT_IDX_ALL_ERR_SLOT) ? "MAC ERROR/ALL ERROR" : ""),
+ ((index == RT_IDX_IP_CSUM_ERR_SLOT) ? "IP CSUM ERROR" : ""),
+ ((index ==
+ RT_IDX_TCP_UDP_CSUM_ERR_SLOT) ? "TCP/UDP CSUM ERROR" : ""),
+ ((index == RT_IDX_BCAST_SLOT) ? "BROADCAST" : ""),
+ ((index == RT_IDX_MCAST_MATCH_SLOT) ? "MULTICAST MATCH" : ""),
+ ((index == RT_IDX_ALLMULTI_SLOT) ? "ALL MULTICAST MATCH" : ""),
+ ((index == RT_IDX_UNUSED6_SLOT) ? "UNUSED6" : ""),
+ ((index == RT_IDX_UNUSED7_SLOT) ? "UNUSED7" : ""),
+ ((index == RT_IDX_RSS_MATCH_SLOT) ? "RSS ALL/IPV4 MATCH" : ""),
+ ((index == RT_IDX_RSS_IPV6_SLOT) ? "RSS IPV6" : ""),
+ ((index == RT_IDX_RSS_TCP4_SLOT) ? "RSS TCP4" : ""),
+ ((index == RT_IDX_RSS_TCP6_SLOT) ? "RSS TCP6" : ""),
+ ((index == RT_IDX_CAM_HIT_SLOT) ? "CAM HIT" : ""),
+ ((index == RT_IDX_UNUSED013) ? "UNUSED13" : ""),
+ ((index == RT_IDX_UNUSED014) ? "UNUSED14" : ""),
+ ((index == RT_IDX_PROMISCUOUS_SLOT) ? "PROMISCUOUS" : ""),
+ (enable ? "to" : "from"));
+
+ switch (mask) {
+ case RT_IDX_CAM_HIT:
+ {
+ value = RT_IDX_DST_CAM_Q | /* dest */
+ RT_IDX_TYPE_NICQ | /* type */
+ (RT_IDX_CAM_HIT_SLOT << RT_IDX_IDX_SHIFT);/* index */
+ break;
+ }
+ case RT_IDX_VALID: /* Promiscuous Mode frames. */
+ {
+ value = RT_IDX_DST_DFLT_Q | /* dest */
+ RT_IDX_TYPE_NICQ | /* type */
+ (RT_IDX_PROMISCUOUS_SLOT << RT_IDX_IDX_SHIFT);/* index */
+ break;
+ }
+ case RT_IDX_ERR: /* Pass up MAC,IP,TCP/UDP error frames. */
+ {
+ value = RT_IDX_DST_DFLT_Q | /* dest */
+ RT_IDX_TYPE_NICQ | /* type */
+ (RT_IDX_ALL_ERR_SLOT << RT_IDX_IDX_SHIFT);/* index */
+ break;
+ }
+ case RT_IDX_BCAST: /* Pass up Broadcast frames to default Q. */
+ {
+ value = RT_IDX_DST_DFLT_Q | /* dest */
+ RT_IDX_TYPE_NICQ | /* type */
+ (RT_IDX_BCAST_SLOT << RT_IDX_IDX_SHIFT);/* index */
+ break;
+ }
+ case RT_IDX_MCAST: /* Pass up All Multicast frames. */
+ {
+ value = RT_IDX_DST_CAM_Q | /* dest */
+ RT_IDX_TYPE_NICQ | /* type */
+ (RT_IDX_ALLMULTI_SLOT << RT_IDX_IDX_SHIFT);/* index */
+ break;
+ }
+ case RT_IDX_MCAST_MATCH: /* Pass up matched Multicast frames. */
+ {
+ value = RT_IDX_DST_CAM_Q | /* dest */
+ RT_IDX_TYPE_NICQ | /* type */
+ (RT_IDX_MCAST_MATCH_SLOT << RT_IDX_IDX_SHIFT);/* index */
+ break;
+ }
+ case RT_IDX_RSS_MATCH: /* Pass up matched RSS frames. */
+ {
+ value = RT_IDX_DST_RSS | /* dest */
+ RT_IDX_TYPE_NICQ | /* type */
+ (RT_IDX_RSS_MATCH_SLOT << RT_IDX_IDX_SHIFT);/* index */
+ break;
+ }
+ case 0: /* Clear the E-bit on an entry. */
+ {
+ value = RT_IDX_DST_DFLT_Q | /* dest */
+ RT_IDX_TYPE_NICQ | /* type */
+ (index << RT_IDX_IDX_SHIFT);/* index */
+ break;
+ }
+ default:
+ QPRINTK(qdev, IFUP, ERR, "Mask type %d not yet supported.\n",
+ mask);
+ status = -EPERM;
+ goto exit;
+ }
+
+ if (value) {
+ status = ql_wait_reg_rdy(qdev, RT_IDX, RT_IDX_MW, 0);
+ if (status)
+ goto exit;
+ value |= (enable ? RT_IDX_E : 0);
+ ql_write32(qdev, RT_IDX, value);
+ ql_write32(qdev, RT_DATA, enable ? mask : 0);
+ }
+exit:
+ ql_sem_unlock(qdev, SEM_RT_IDX_MASK);
+ return status;
+}
+
+static void ql_enable_interrupts(struct ql_adapter *qdev)
+{
+ ql_write32(qdev, INTR_EN, (INTR_EN_EI << 16) | INTR_EN_EI);
+}
+
+static void ql_disable_interrupts(struct ql_adapter *qdev)
+{
+ ql_write32(qdev, INTR_EN, (INTR_EN_EI << 16));
+}
+
+/* If we're running with multiple MSI-X vectors then we enable on the fly.
+ * Otherwise, we may have multiple outstanding workers and don't want to
+ * enable until the last one finishes. In this case, the irq_cnt gets
+ * incremented everytime we queue a worker and decremented everytime
+ * a worker finishes. Once it hits zero we enable the interrupt.
+ */
+void ql_enable_completion_interrupt(struct ql_adapter *qdev, u32 intr)
+{
+ if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags)))
+ ql_write32(qdev, INTR_EN,
+ qdev->intr_context[intr].intr_en_mask);
+ else {
+ if (qdev->legacy_check)
+ spin_lock(&qdev->legacy_lock);
+ if (atomic_dec_and_test(&qdev->intr_context[intr].irq_cnt)) {
+ QPRINTK(qdev, INTR, ERR, "Enabling interrupt %d.\n",
+ intr);
+ ql_write32(qdev, INTR_EN,
+ qdev->intr_context[intr].intr_en_mask);
+ } else {
+ QPRINTK(qdev, INTR, ERR,
+ "Skip enable, other queue(s) are active.\n");
+ }
+ if (qdev->legacy_check)
+ spin_unlock(&qdev->legacy_lock);
+ }
+}
+
+static u32 ql_disable_completion_interrupt(struct ql_adapter *qdev, u32 intr)
+{
+ u32 var = 0;
+
+ if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags)))
+ goto exit;
+ else if (!atomic_read(&qdev->intr_context[intr].irq_cnt)) {
+ ql_write32(qdev, INTR_EN,
+ qdev->intr_context[intr].intr_dis_mask);
+ var = ql_read32(qdev, STS);
+ }
+ atomic_inc(&qdev->intr_context[intr].irq_cnt);
+exit:
+ return var;
+}
+
+static void ql_enable_all_completion_interrupts(struct ql_adapter *qdev)
+{
+ int i;
+ for (i = 0; i < qdev->intr_count; i++) {
+ /* The enable call does a atomic_dec_and_test
+ * and enables only if the result is zero.
+ * So we precharge it here.
+ */
+ atomic_set(&qdev->intr_context[i].irq_cnt, 1);
+ ql_enable_completion_interrupt(qdev, i);
+ }
+
+}
+
+int ql_read_flash_word(struct ql_adapter *qdev, int offset, u32 *data)
+{
+ int status = 0;
+ /* wait for reg to come ready */
+ status = ql_wait_reg_rdy(qdev,
+ FLASH_ADDR, FLASH_ADDR_RDY, FLASH_ADDR_ERR);
+ if (status)
+ goto exit;
+ /* set up for reg read */
+ ql_write32(qdev, FLASH_ADDR, FLASH_ADDR_R | offset);
+ /* wait for reg to come ready */
+ status = ql_wait_reg_rdy(qdev,
+ FLASH_ADDR, FLASH_ADDR_RDY, FLASH_ADDR_ERR);
+ if (status)
+ goto exit;
+ /* get the data */
+ *data = ql_read32(qdev, FLASH_DATA);
+exit:
+ return status;
+}
+
+static int ql_get_flash_params(struct ql_adapter *qdev)
+{
+ int i;
+ int status;
+ u32 *p = (u32 *)&qdev->flash;
+
+ if (ql_sem_spinlock(qdev, SEM_FLASH_MASK))
+ return -ETIMEDOUT;
+
+ for (i = 0; i < sizeof(qdev->flash) / sizeof(u32); i++, p++) {
+ status = ql_read_flash_word(qdev, i, p);
+ if (status) {
+ QPRINTK(qdev, IFUP, ERR, "Error reading flash.\n");
+ goto exit;
+ }
+
+ }
+exit:
+ ql_sem_unlock(qdev, SEM_FLASH_MASK);
+ return status;
+}
+
+/* xgmac register are located behind the xgmac_addr and xgmac_data
+ * register pair. Each read/write requires us to wait for the ready
+ * bit before reading/writing the data.
+ */
+static int ql_write_xgmac_reg(struct ql_adapter *qdev, u32 reg, u32 data)
+{
+ int status;
+ /* wait for reg to come ready */
+ status = ql_wait_reg_rdy(qdev,
+ XGMAC_ADDR, XGMAC_ADDR_RDY, XGMAC_ADDR_XME);
+ if (status)
+ return status;
+ /* write the data to the data reg */
+ ql_write32(qdev, XGMAC_DATA, data);
+ /* trigger the write */
+ ql_write32(qdev, XGMAC_ADDR, reg);
+ return status;
+}
+
+/* xgmac register are located behind the xgmac_addr and xgmac_data
+ * register pair. Each read/write requires us to wait for the ready
+ * bit before reading/writing the data.
+ */
+int ql_read_xgmac_reg(struct ql_adapter *qdev, u32 reg, u32 *data)
+{
+ int status = 0;
+ /* wait for reg to come ready */
+ status = ql_wait_reg_rdy(qdev,
+ XGMAC_ADDR, XGMAC_ADDR_RDY, XGMAC_ADDR_XME);
+ if (status)
+ goto exit;
+ /* set up for reg read */
+ ql_write32(qdev, XGMAC_ADDR, reg | XGMAC_ADDR_R);
+ /* wait for reg to come ready */
+ status = ql_wait_reg_rdy(qdev,
+ XGMAC_ADDR, XGMAC_ADDR_RDY, XGMAC_ADDR_XME);
+ if (status)
+ goto exit;
+ /* get the data */
+ *data = ql_read32(qdev, XGMAC_DATA);
+exit:
+ return status;
+}
+
+/* This is used for reading the 64-bit statistics regs. */
+int ql_read_xgmac_reg64(struct ql_adapter *qdev, u32 reg, u64 *data)
+{
+ int status = 0;
+ u32 hi = 0;
+ u32 lo = 0;
+
+ status = ql_read_xgmac_reg(qdev, reg, &lo);
+ if (status)
+ goto exit;
+
+ status = ql_read_xgmac_reg(qdev, reg + 4, &hi);
+ if (status)
+ goto exit;
+
+ *data = (u64) lo | ((u64) hi << 32);
+
+exit:
+ return status;
+}
+
+/* Take the MAC Core out of reset.
+ * Enable statistics counting.
+ * Take the transmitter/receiver out of reset.
+ * This functionality may be done in the MPI firmware at a
+ * later date.
+ */
+static int ql_port_initialize(struct ql_adapter *qdev)
+{
+ int status = 0;
+ u32 data;
+
+ if (ql_sem_trylock(qdev, qdev->xg_sem_mask)) {
+ /* Another function has the semaphore, so
+ * wait for the port init bit to come ready.
+ */
+ QPRINTK(qdev, LINK, INFO,
+ "Another function has the semaphore, so wait for the port init bit to come ready.\n");
+ status = ql_wait_reg_rdy(qdev, STS, qdev->port_init, 0);
+ if (status) {
+ QPRINTK(qdev, LINK, CRIT,
+ "Port initialize timed out.\n");
+ }
+ return status;
+ }
+
+ QPRINTK(qdev, LINK, INFO, "Got xgmac semaphore!.\n");
+ /* Set the core reset. */
+ status = ql_read_xgmac_reg(qdev, GLOBAL_CFG, &data);
+ if (status)
+ goto end;
+ data |= GLOBAL_CFG_RESET;
+ status = ql_write_xgmac_reg(qdev, GLOBAL_CFG, data);
+ if (status)
+ goto end;
+
+ /* Clear the core reset and turn on jumbo for receiver. */
+ data &= ~GLOBAL_CFG_RESET; /* Clear core reset. */
+ data |= GLOBAL_CFG_JUMBO; /* Turn on jumbo. */
+ data |= GLOBAL_CFG_TX_STAT_EN;
+ data |= GLOBAL_CFG_RX_STAT_EN;
+ status = ql_write_xgmac_reg(qdev, GLOBAL_CFG, data);
+ if (status)
+ goto end;
+
+ /* Enable transmitter, and clear it's reset. */
+ status = ql_read_xgmac_reg(qdev, TX_CFG, &data);
+ if (status)
+ goto end;
+ data &= ~TX_CFG_RESET; /* Clear the TX MAC reset. */
+ data |= TX_CFG_EN; /* Enable the transmitter. */
+ status = ql_write_xgmac_reg(qdev, TX_CFG, data);
+ if (status)
+ goto end;
+
+ /* Enable receiver and clear it's reset. */
+ status = ql_read_xgmac_reg(qdev, RX_CFG, &data);
+ if (status)
+ goto end;
+ data &= ~RX_CFG_RESET; /* Clear the RX MAC reset. */
+ data |= RX_CFG_EN; /* Enable the receiver. */
+ status = ql_write_xgmac_reg(qdev, RX_CFG, data);
+ if (status)
+ goto end;
+
+ /* Turn on jumbo. */
+ status =
+ ql_write_xgmac_reg(qdev, MAC_TX_PARAMS, MAC_TX_PARAMS_JUMBO | (0x2580 << 16));
+ if (status)
+ goto end;
+ status =
+ ql_write_xgmac_reg(qdev, MAC_RX_PARAMS, 0x2580);
+ if (status)
+ goto end;
+
+ /* Signal to the world that the port is enabled. */
+ ql_write32(qdev, STS, ((qdev->port_init << 16) | qdev->port_init));
+end:
+ ql_sem_unlock(qdev, qdev->xg_sem_mask);
+ return status;
+}
+
+/* Get the next large buffer. */
+struct bq_desc *ql_get_curr_lbuf(struct rx_ring *rx_ring)
+{
+ struct bq_desc *lbq_desc = &rx_ring->lbq[rx_ring->lbq_curr_idx];
+ rx_ring->lbq_curr_idx++;
+ if (rx_ring->lbq_curr_idx == rx_ring->lbq_len)
+ rx_ring->lbq_curr_idx = 0;
+ rx_ring->lbq_free_cnt++;
+ return lbq_desc;
+}
+
+/* Get the next small buffer. */
+struct bq_desc *ql_get_curr_sbuf(struct rx_ring *rx_ring)
+{
+ struct bq_desc *sbq_desc = &rx_ring->sbq[rx_ring->sbq_curr_idx];
+ rx_ring->sbq_curr_idx++;
+ if (rx_ring->sbq_curr_idx == rx_ring->sbq_len)
+ rx_ring->sbq_curr_idx = 0;
+ rx_ring->sbq_free_cnt++;
+ return sbq_desc;
+}
+
+/* Update an rx ring index. */
+static void ql_update_cq(struct rx_ring *rx_ring)
+{
+ rx_ring->cnsmr_idx++;
+ rx_ring->curr_entry++;
+ if (unlikely(rx_ring->cnsmr_idx == rx_ring->cq_len)) {
+ rx_ring->cnsmr_idx = 0;
+ rx_ring->curr_entry = rx_ring->cq_base;
+ }
+}
+
+static void ql_write_cq_idx(struct rx_ring *rx_ring)
+{
+ ql_write_db_reg(rx_ring->cnsmr_idx, rx_ring->cnsmr_idx_db_reg);
+}
+
+/* Process (refill) a large buffer queue. */
+static void ql_update_lbq(struct ql_adapter *qdev, struct rx_ring *rx_ring)
+{
+ int clean_idx = rx_ring->lbq_clean_idx;
+ struct bq_desc *lbq_desc;
+ struct bq_element *bq;
+ u64 map;
+ int i;
+
+ while (rx_ring->lbq_free_cnt > 16) {
+ for (i = 0; i < 16; i++) {
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "lbq: try cleaning clean_idx = %d.\n",
+ clean_idx);
+ lbq_desc = &rx_ring->lbq[clean_idx];
+ bq = lbq_desc->bq;
+ if (lbq_desc->p.lbq_page == NULL) {
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "lbq: getting new page for index %d.\n",
+ lbq_desc->index);
+ lbq_desc->p.lbq_page = alloc_page(GFP_ATOMIC);
+ if (lbq_desc->p.lbq_page == NULL) {
+ QPRINTK(qdev, RX_STATUS, ERR,
+ "Couldn't get a page.\n");
+ return;
+ }
+ map = pci_map_page(qdev->pdev,
+ lbq_desc->p.lbq_page,
+ 0, PAGE_SIZE,
+ PCI_DMA_FROMDEVICE);
+ if (pci_dma_mapping_error(map)) {
+ QPRINTK(qdev, RX_STATUS, ERR,
+ "PCI mapping failed.\n");
+ return;
+ }
+ pci_unmap_addr_set(lbq_desc, mapaddr, map);
+ pci_unmap_len_set(lbq_desc, maplen, PAGE_SIZE);
+ bq->addr_lo = /*lbq_desc->addr_lo = */
+ cpu_to_le32(map);
+ bq->addr_hi = /*lbq_desc->addr_hi = */
+ cpu_to_le32(map >> 32);
+ }
+ clean_idx++;
+ if (clean_idx == rx_ring->lbq_len)
+ clean_idx = 0;
+ }
+
+ rx_ring->lbq_clean_idx = clean_idx;
+ rx_ring->lbq_prod_idx += 16;
+ if (rx_ring->lbq_prod_idx == rx_ring->lbq_len)
+ rx_ring->lbq_prod_idx = 0;
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "lbq: updating prod idx = %d.\n",
+ rx_ring->lbq_prod_idx);
+ ql_write_db_reg(rx_ring->lbq_prod_idx,
+ rx_ring->lbq_prod_idx_db_reg);
+ rx_ring->lbq_free_cnt -= 16;
+ }
+}
+
+/* Process (refill) a small buffer queue. */
+static void ql_update_sbq(struct ql_adapter *qdev, struct rx_ring *rx_ring)
+{
+ int clean_idx = rx_ring->sbq_clean_idx;
+ struct bq_desc *sbq_desc;
+ struct bq_element *bq;
+ u64 map;
+ int i;
+
+ while (rx_ring->sbq_free_cnt > 16) {
+ for (i = 0; i < 16; i++) {
+ sbq_desc = &rx_ring->sbq[clean_idx];
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "sbq: try cleaning clean_idx = %d.\n",
+ clean_idx);
+ bq = sbq_desc->bq;
+ if (sbq_desc->p.skb == NULL) {
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "sbq: getting new skb for index %d.\n",
+ sbq_desc->index);
+ sbq_desc->p.skb =
+ netdev_alloc_skb(qdev->ndev,
+ rx_ring->sbq_buf_size);
+ if (sbq_desc->p.skb == NULL) {
+ QPRINTK(qdev, PROBE, ERR,
+ "Couldn't get an skb.\n");
+ rx_ring->sbq_clean_idx = clean_idx;
+ return;
+ }
+ skb_reserve(sbq_desc->p.skb, QLGE_SB_PAD);
+ map = pci_map_single(qdev->pdev,
+ sbq_desc->p.skb->data,
+ rx_ring->sbq_buf_size /
+ 2, PCI_DMA_FROMDEVICE);
+ pci_unmap_addr_set(sbq_desc, mapaddr, map);
+ pci_unmap_len_set(sbq_desc, maplen,
+ rx_ring->sbq_buf_size / 2);
+ bq->addr_lo = cpu_to_le32(map);
+ bq->addr_hi = cpu_to_le32(map >> 32);
+ }
+
+ clean_idx++;
+ if (clean_idx == rx_ring->sbq_len)
+ clean_idx = 0;
+ }
+ rx_ring->sbq_clean_idx = clean_idx;
+ rx_ring->sbq_prod_idx += 16;
+ if (rx_ring->sbq_prod_idx == rx_ring->sbq_len)
+ rx_ring->sbq_prod_idx = 0;
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "sbq: updating prod idx = %d.\n",
+ rx_ring->sbq_prod_idx);
+ ql_write_db_reg(rx_ring->sbq_prod_idx,
+ rx_ring->sbq_prod_idx_db_reg);
+
+ rx_ring->sbq_free_cnt -= 16;
+ }
+}
+
+static void ql_update_buffer_queues(struct ql_adapter *qdev,
+ struct rx_ring *rx_ring)
+{
+ ql_update_sbq(qdev, rx_ring);
+ ql_update_lbq(qdev, rx_ring);
+}
+
+/* Unmaps tx buffers. Can be called from send() if a pci mapping
+ * fails at some stage, or from the interrupt when a tx completes.
+ */
+static void ql_unmap_send(struct ql_adapter *qdev,
+ struct tx_ring_desc *tx_ring_desc, int mapped)
+{
+ int i;
+ for (i = 0; i < mapped; i++) {
+ if (i == 0 || (i == 7 && mapped > 7)) {
+ /*
+ * Unmap the skb->data area, or the
+ * external sglist (AKA the Outbound
+ * Address List (OAL)).
+ * If its the zeroeth element, then it's
+ * the skb->data area. If it's the 7th
+ * element and there is more than 6 frags,
+ * then its an OAL.
+ */
+ if (i == 7) {
+ QPRINTK(qdev, TX_DONE, DEBUG,
+ "unmapping OAL area.\n");
+ }
+ pci_unmap_single(qdev->pdev,
+ pci_unmap_addr(&tx_ring_desc->map[i],
+ mapaddr),
+ pci_unmap_len(&tx_ring_desc->map[i],
+ maplen),
+ PCI_DMA_TODEVICE);
+ } else {
+ QPRINTK(qdev, TX_DONE, DEBUG, "unmapping frag %d.\n",
+ i);
+ pci_unmap_page(qdev->pdev,
+ pci_unmap_addr(&tx_ring_desc->map[i],
+ mapaddr),
+ pci_unmap_len(&tx_ring_desc->map[i],
+ maplen), PCI_DMA_TODEVICE);
+ }
+ }
+
+}
+
+/* Map the buffers for this transmit. This will return
+ * NETDEV_TX_BUSY or NETDEV_TX_OK based on success.
+ */
+static int ql_map_send(struct ql_adapter *qdev,
+ struct ob_mac_iocb_req *mac_iocb_ptr,
+ struct sk_buff *skb, struct tx_ring_desc *tx_ring_desc)
+{
+ int len = skb_headlen(skb);
+ dma_addr_t map;
+ int frag_idx, err, map_idx = 0;
+ struct tx_buf_desc *tbd = mac_iocb_ptr->tbd;
+ int frag_cnt = skb_shinfo(skb)->nr_frags;
+
+ if (frag_cnt) {
+ QPRINTK(qdev, TX_QUEUED, DEBUG, "frag_cnt = %d.\n", frag_cnt);
+ }
+ /*
+ * Map the skb buffer first.
+ */
+ map = pci_map_single(qdev->pdev, skb->data, len, PCI_DMA_TODEVICE);
+
+ err = pci_dma_mapping_error(map);
+ if (err) {
+ QPRINTK(qdev, TX_QUEUED, ERR,
+ "PCI mapping failed with error: %d\n", err);
+
+ return NETDEV_TX_BUSY;
+ }
+
+ tbd->len = cpu_to_le32(len);
+ tbd->addr = cpu_to_le64(map);
+ pci_unmap_addr_set(&tx_ring_desc->map[map_idx], mapaddr, map);
+ pci_unmap_len_set(&tx_ring_desc->map[map_idx], maplen, len);
+ map_idx++;
+
+ /*
+ * This loop fills the remainder of the 8 address descriptors
+ * in the IOCB. If there are more than 7 fragments, then the
+ * eighth address desc will point to an external list (OAL).
+ * When this happens, the remainder of the frags will be stored
+ * in this list.
+ */
+ for (frag_idx = 0; frag_idx < frag_cnt; frag_idx++, map_idx++) {
+ skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_idx];
+ tbd++;
+ if (frag_idx == 6 && frag_cnt > 7) {
+ /* Let's tack on an sglist.
+ * Our control block will now
+ * look like this:
+ * iocb->seg[0] = skb->data
+ * iocb->seg[1] = frag[0]
+ * iocb->seg[2] = frag[1]
+ * iocb->seg[3] = frag[2]
+ * iocb->seg[4] = frag[3]
+ * iocb->seg[5] = frag[4]
+ * iocb->seg[6] = frag[5]
+ * iocb->seg[7] = ptr to OAL (external sglist)
+ * oal->seg[0] = frag[6]
+ * oal->seg[1] = frag[7]
+ * oal->seg[2] = frag[8]
+ * oal->seg[3] = frag[9]
+ * oal->seg[4] = frag[10]
+ * etc...
+ */
+ /* Tack on the OAL in the eighth segment of IOCB. */
+ map = pci_map_single(qdev->pdev, &tx_ring_desc->oal,
+ sizeof(struct oal),
+ PCI_DMA_TODEVICE);
+ err = pci_dma_mapping_error(map);
+ if (err) {
+ QPRINTK(qdev, TX_QUEUED, ERR,
+ "PCI mapping outbound address list with error: %d\n",
+ err);
+ goto map_error;
+ }
+
+ tbd->addr = cpu_to_le64(map);
+ /*
+ * The length is the number of fragments
+ * that remain to be mapped times the length
+ * of our sglist (OAL).
+ */
+ tbd->len =
+ cpu_to_le32((sizeof(struct tx_buf_desc) *
+ (frag_cnt - frag_idx)) | TX_DESC_C);
+ pci_unmap_addr_set(&tx_ring_desc->map[map_idx], mapaddr,
+ map);
+ pci_unmap_len_set(&tx_ring_desc->map[map_idx], maplen,
+ sizeof(struct oal));
+ tbd = (struct tx_buf_desc *)&tx_ring_desc->oal;
+ map_idx++;
+ }
+
+ map =
+ pci_map_page(qdev->pdev, frag->page,
+ frag->page_offset, frag->size,
+ PCI_DMA_TODEVICE);
+
+ err = pci_dma_mapping_error(map);
+ if (err) {
+ QPRINTK(qdev, TX_QUEUED, ERR,
+ "PCI mapping frags failed with error: %d.\n",
+ err);
+ goto map_error;
+ }
+
+ tbd->addr = cpu_to_le64(map);
+ tbd->len = cpu_to_le32(frag->size);
+ pci_unmap_addr_set(&tx_ring_desc->map[map_idx], mapaddr, map);
+ pci_unmap_len_set(&tx_ring_desc->map[map_idx], maplen,
+ frag->size);
+
+ }
+ /* Save the number of segments we've mapped. */
+ tx_ring_desc->map_cnt = map_idx;
+ /* Terminate the last segment. */
+ tbd->len = cpu_to_le32(le32_to_cpu(tbd->len) | TX_DESC_E);
+ return NETDEV_TX_OK;
+
+map_error:
+ /*
+ * If the first frag mapping failed, then i will be zero.
+ * This causes the unmap of the skb->data area. Otherwise
+ * we pass in the number of frags that mapped successfully
+ * so they can be umapped.
+ */
+ ql_unmap_send(qdev, tx_ring_desc, map_idx);
+ return NETDEV_TX_BUSY;
+}
+
+void ql_realign_skb(struct sk_buff *skb, int len)
+{
+ void *temp_addr = skb->data;
+
+ /* Undo the skb_reserve(skb,32) we did before
+ * giving to hardware, and realign data on
+ * a 2-byte boundary.
+ */
+ skb->data -= QLGE_SB_PAD - NET_IP_ALIGN;
+ skb->tail -= QLGE_SB_PAD - NET_IP_ALIGN;
+ skb_copy_to_linear_data(skb, temp_addr,
+ (unsigned int)len);
+}
+
+/*
+ * This function builds an skb for the given inbound
+ * completion. It will be rewritten for readability in the near
+ * future, but for not it works well.
+ */
+static struct sk_buff *ql_build_rx_skb(struct ql_adapter *qdev,
+ struct rx_ring *rx_ring,
+ struct ib_mac_iocb_rsp *ib_mac_rsp)
+{
+ struct bq_desc *lbq_desc;
+ struct bq_desc *sbq_desc;
+ struct sk_buff *skb = NULL;
+ u32 length = le32_to_cpu(ib_mac_rsp->data_len);
+ u32 hdr_len = le32_to_cpu(ib_mac_rsp->hdr_len);
+
+ /*
+ * Handle the header buffer if present.
+ */
+ if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HV &&
+ ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS) {
+ QPRINTK(qdev, RX_STATUS, DEBUG, "Header of %d bytes in small buffer.\n", hdr_len);
+ /*
+ * Headers fit nicely into a small buffer.
+ */
+ sbq_desc = ql_get_curr_sbuf(rx_ring);
+ pci_unmap_single(qdev->pdev,
+ pci_unmap_addr(sbq_desc, mapaddr),
+ pci_unmap_len(sbq_desc, maplen),
+ PCI_DMA_FROMDEVICE);
+ skb = sbq_desc->p.skb;
+ ql_realign_skb(skb, hdr_len);
+ skb_put(skb, hdr_len);
+ sbq_desc->p.skb = NULL;
+ }
+
+ /*
+ * Handle the data buffer(s).
+ */
+ if (unlikely(!length)) { /* Is there data too? */
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "No Data buffer in this packet.\n");
+ return skb;
+ }
+
+ if (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DS) {
+ if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS) {
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "Headers in small, data of %d bytes in small, combine them.\n", length);
+ /*
+ * Data is less than small buffer size so it's
+ * stuffed in a small buffer.
+ * For this case we append the data
+ * from the "data" small buffer to the "header" small
+ * buffer.
+ */
+ sbq_desc = ql_get_curr_sbuf(rx_ring);
+ pci_dma_sync_single_for_cpu(qdev->pdev,
+ pci_unmap_addr
+ (sbq_desc, mapaddr),
+ pci_unmap_len
+ (sbq_desc, maplen),
+ PCI_DMA_FROMDEVICE);
+ memcpy(skb_put(skb, length),
+ sbq_desc->p.skb->data, length);
+ pci_dma_sync_single_for_device(qdev->pdev,
+ pci_unmap_addr
+ (sbq_desc,
+ mapaddr),
+ pci_unmap_len
+ (sbq_desc,
+ maplen),
+ PCI_DMA_FROMDEVICE);
+ } else {
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "%d bytes in a single small buffer.\n", length);
+ sbq_desc = ql_get_curr_sbuf(rx_ring);
+ skb = sbq_desc->p.skb;
+ ql_realign_skb(skb, length);
+ skb_put(skb, length);
+ pci_unmap_single(qdev->pdev,
+ pci_unmap_addr(sbq_desc,
+ mapaddr),
+ pci_unmap_len(sbq_desc,
+ maplen),
+ PCI_DMA_FROMDEVICE);
+ sbq_desc->p.skb = NULL;
+ }
+ } else if (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DL) {
+ if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS) {
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "Header in small, %d bytes in large. Chain large to small!\n", length);
+ /*
+ * The data is in a single large buffer. We
+ * chain it to the header buffer's skb and let
+ * it rip.
+ */
+ lbq_desc = ql_get_curr_lbuf(rx_ring);
+ pci_unmap_page(qdev->pdev,
+ pci_unmap_addr(lbq_desc,
+ mapaddr),
+ pci_unmap_len(lbq_desc, maplen),
+ PCI_DMA_FROMDEVICE);
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "Chaining page to skb.\n");
+ skb_fill_page_desc(skb, 0, lbq_desc->p.lbq_page,
+ 0, length);
+ skb->len += length;
+ skb->data_len += length;
+ skb->truesize += length;
+ lbq_desc->p.lbq_page = NULL;
+ } else {
+ /*
+ * The headers and data are in a single large buffer. We
+ * copy it to a new skb and let it go. This can happen with
+ * jumbo mtu on a non-TCP/UDP frame.
+ */
+ lbq_desc = ql_get_curr_lbuf(rx_ring);
+ skb = netdev_alloc_skb(qdev->ndev, length);
+ if (skb == NULL) {
+ QPRINTK(qdev, PROBE, DEBUG,
+ "No skb available, drop the packet.\n");
+ return NULL;
+ }
+ skb_reserve(skb, NET_IP_ALIGN);
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "%d bytes of headers and data in large. Chain page to new skb and pull tail.\n", length);
+ skb_fill_page_desc(skb, 0, lbq_desc->p.lbq_page,
+ 0, length);
+ skb->len += length;
+ skb->data_len += length;
+ skb->truesize += length;
+ length -= length;
+ lbq_desc->p.lbq_page = NULL;
+ __pskb_pull_tail(skb,
+ (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V) ?
+ VLAN_ETH_HLEN : ETH_HLEN);
+ }
+ } else {
+ /*
+ * The data is in a chain of large buffers
+ * pointed to by a small buffer. We loop
+ * thru and chain them to the our small header
+ * buffer's skb.
+ * frags: There are 18 max frags and our small
+ * buffer will hold 32 of them. The thing is,
+ * we'll use 3 max for our 9000 byte jumbo
+ * frames. If the MTU goes up we could
+ * eventually be in trouble.
+ */
+ int size, offset, i = 0;
+ struct bq_element *bq, bq_array[8];
+ sbq_desc = ql_get_curr_sbuf(rx_ring);
+ pci_unmap_single(qdev->pdev,
+ pci_unmap_addr(sbq_desc, mapaddr),
+ pci_unmap_len(sbq_desc, maplen),
+ PCI_DMA_FROMDEVICE);
+ if (!(ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS)) {
+ /*
+ * This is an non TCP/UDP IP frame, so
+ * the headers aren't split into a small
+ * buffer. We have to use the small buffer
+ * that contains our sg list as our skb to
+ * send upstairs. Copy the sg list here to
+ * a local buffer and use it to find the
+ * pages to chain.
+ */
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "%d bytes of headers & data in chain of large.\n", length);
+ skb = sbq_desc->p.skb;
+ bq = &bq_array[0];
+ memcpy(bq, skb->data, sizeof(bq_array));
+ sbq_desc->p.skb = NULL;
+ skb_reserve(skb, NET_IP_ALIGN);
+ } else {
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "Headers in small, %d bytes of data in chain of large.\n", length);
+ bq = (struct bq_element *)sbq_desc->p.skb->data;
+ }
+ while (length > 0) {
+ lbq_desc = ql_get_curr_lbuf(rx_ring);
+ if ((bq->addr_lo & ~BQ_MASK) != lbq_desc->bq->addr_lo) {
+ QPRINTK(qdev, RX_STATUS, ERR,
+ "Panic!!! bad large buffer address, expected 0x%.08x, got 0x%.08x.\n",
+ lbq_desc->bq->addr_lo, bq->addr_lo);
+ return NULL;
+ }
+ pci_unmap_page(qdev->pdev,
+ pci_unmap_addr(lbq_desc,
+ mapaddr),
+ pci_unmap_len(lbq_desc,
+ maplen),
+ PCI_DMA_FROMDEVICE);
+ size = (length < PAGE_SIZE) ? length : PAGE_SIZE;
+ offset = 0;
+
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "Adding page %d to skb for %d bytes.\n",
+ i, size);
+ skb_fill_page_desc(skb, i, lbq_desc->p.lbq_page,
+ offset, size);
+ skb->len += size;
+ skb->data_len += size;
+ skb->truesize += size;
+ length -= size;
+ lbq_desc->p.lbq_page = NULL;
+ bq++;
+ i++;
+ }
+ __pskb_pull_tail(skb, (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V) ?
+ VLAN_ETH_HLEN : ETH_HLEN);
+ }
+ return skb;
+}
+
+/* Process an inbound completion from an rx ring. */
+static void ql_process_mac_rx_intr(struct ql_adapter *qdev,
+ struct rx_ring *rx_ring,
+ struct ib_mac_iocb_rsp *ib_mac_rsp)
+{
+ struct net_device *ndev = qdev->ndev;
+ struct sk_buff *skb = NULL;
+
+ QL_DUMP_IB_MAC_RSP(ib_mac_rsp);
+
+ skb = ql_build_rx_skb(qdev, rx_ring, ib_mac_rsp);
+ if (unlikely(!skb)) {
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "No skb available, drop packet.\n");
+ return;
+ }
+
+ prefetch(skb->data);
+ skb->dev = ndev;
+ if (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) {
+ QPRINTK(qdev, RX_STATUS, DEBUG, "%s%s%s Multicast.\n",
+ (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
+ IB_MAC_IOCB_RSP_M_HASH ? "Hash" : "",
+ (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
+ IB_MAC_IOCB_RSP_M_REG ? "Registered" : "",
+ (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
+ IB_MAC_IOCB_RSP_M_PROM ? "Promiscuous" : "");
+ }
+ if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_P) {
+ QPRINTK(qdev, RX_STATUS, DEBUG, "Promiscuous Packet.\n");
+ }
+ if (ib_mac_rsp->flags1 & (IB_MAC_IOCB_RSP_IE | IB_MAC_IOCB_RSP_TE)) {
+ QPRINTK(qdev, RX_STATUS, ERR,
+ "Bad checksum for this %s packet.\n",
+ ((ib_mac_rsp->
+ flags2 & IB_MAC_IOCB_RSP_T) ? "TCP" : "UDP"));
+ skb->ip_summed = CHECKSUM_NONE;
+ } else if (qdev->rx_csum &&
+ ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_T) ||
+ ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_U) &&
+ !(ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_NU)))) {
+ QPRINTK(qdev, RX_STATUS, DEBUG, "RX checksum done!\n");
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ }
+ qdev->stats.rx_packets++;
+ qdev->stats.rx_bytes += skb->len;
+ skb->protocol = eth_type_trans(skb, ndev);
+ if (qdev->vlgrp && (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V)) {
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "Passing a VLAN packet upstream.\n");
+ vlan_hwaccel_rx(skb, qdev->vlgrp,
+ le16_to_cpu(ib_mac_rsp->vlan_id));
+ } else {
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "Passing a normal packet upstream.\n");
+ netif_rx(skb);
+ }
+ ndev->last_rx = jiffies;
+}
+
+/* Process an outbound completion from an rx ring. */
+static void ql_process_mac_tx_intr(struct ql_adapter *qdev,
+ struct ob_mac_iocb_rsp *mac_rsp)
+{
+ struct tx_ring *tx_ring;
+ struct tx_ring_desc *tx_ring_desc;
+
+ QL_DUMP_OB_MAC_RSP(mac_rsp);
+ tx_ring = &qdev->tx_ring[mac_rsp->txq_idx];
+ tx_ring_desc = &tx_ring->q[mac_rsp->tid];
+ ql_unmap_send(qdev, tx_ring_desc, tx_ring_desc->map_cnt);
+ qdev->stats.tx_bytes += tx_ring_desc->map_cnt;
+ qdev->stats.tx_packets++;
+ dev_kfree_skb(tx_ring_desc->skb);
+ tx_ring_desc->skb = NULL;
+
+ if (unlikely(mac_rsp->flags1 & (OB_MAC_IOCB_RSP_E |
+ OB_MAC_IOCB_RSP_S |
+ OB_MAC_IOCB_RSP_L |
+ OB_MAC_IOCB_RSP_P | OB_MAC_IOCB_RSP_B))) {
+ if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_E) {
+ QPRINTK(qdev, TX_DONE, WARNING,
+ "Total descriptor length did not match transfer length.\n");
+ }
+ if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_S) {
+ QPRINTK(qdev, TX_DONE, WARNING,
+ "Frame too short to be legal, not sent.\n");
+ }
+ if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_L) {
+ QPRINTK(qdev, TX_DONE, WARNING,
+ "Frame too long, but sent anyway.\n");
+ }
+ if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_B) {
+ QPRINTK(qdev, TX_DONE, WARNING,
+ "PCI backplane error. Frame not sent.\n");
+ }
+ }
+ atomic_inc(&tx_ring->tx_count);
+}
+
+/* Fire up a handler to reset the MPI processor. */
+void ql_queue_fw_error(struct ql_adapter *qdev)
+{
+ netif_stop_queue(qdev->ndev);
+ netif_carrier_off(qdev->ndev);
+ queue_delayed_work(qdev->workqueue, &qdev->mpi_reset_work, 0);
+}
+
+void ql_queue_asic_error(struct ql_adapter *qdev)
+{
+ netif_stop_queue(qdev->ndev);
+ netif_carrier_off(qdev->ndev);
+ ql_disable_interrupts(qdev);
+ queue_delayed_work(qdev->workqueue, &qdev->asic_reset_work, 0);
+}
+
+static void ql_process_chip_ae_intr(struct ql_adapter *qdev,
+ struct ib_ae_iocb_rsp *ib_ae_rsp)
+{
+ switch (ib_ae_rsp->event) {
+ case MGMT_ERR_EVENT:
+ QPRINTK(qdev, RX_ERR, ERR,
+ "Management Processor Fatal Error.\n");
+ ql_queue_fw_error(qdev);
+ return;
+
+ case CAM_LOOKUP_ERR_EVENT:
+ QPRINTK(qdev, LINK, ERR,
+ "Multiple CAM hits lookup occurred.\n");
+ QPRINTK(qdev, DRV, ERR, "This event shouldn't occur.\n");
+ ql_queue_asic_error(qdev);
+ return;
+
+ case SOFT_ECC_ERROR_EVENT:
+ QPRINTK(qdev, RX_ERR, ERR, "Soft ECC error detected.\n");
+ ql_queue_asic_error(qdev);
+ break;
+
+ case PCI_ERR_ANON_BUF_RD:
+ QPRINTK(qdev, RX_ERR, ERR,
+ "PCI error occurred when reading anonymous buffers from rx_ring %d.\n",
+ ib_ae_rsp->q_id);
+ ql_queue_asic_error(qdev);
+ break;
+
+ default:
+ QPRINTK(qdev, DRV, ERR, "Unexpected event %d.\n",
+ ib_ae_rsp->event);
+ ql_queue_asic_error(qdev);
+ break;
+ }
+}
+
+static int ql_clean_outbound_rx_ring(struct rx_ring *rx_ring)
+{
+ struct ql_adapter *qdev = rx_ring->qdev;
+ u32 prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
+ struct ob_mac_iocb_rsp *net_rsp = NULL;
+ int count = 0;
+
+ /* While there are entries in the completion queue. */
+ while (prod != rx_ring->cnsmr_idx) {
+
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "cq_id = %d, prod = %d, cnsmr = %d.\n.", rx_ring->cq_id,
+ prod, rx_ring->cnsmr_idx);
+
+ net_rsp = (struct ob_mac_iocb_rsp *)rx_ring->curr_entry;
+ rmb();
+ switch (net_rsp->opcode) {
+
+ case OPCODE_OB_MAC_TSO_IOCB:
+ case OPCODE_OB_MAC_IOCB:
+ ql_process_mac_tx_intr(qdev, net_rsp);
+ break;
+ default:
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "Hit default case, not handled! dropping the packet, opcode = %x.\n",
+ net_rsp->opcode);
+ }
+ count++;
+ ql_update_cq(rx_ring);
+ prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
+ }
+ ql_write_cq_idx(rx_ring);
+ if (netif_queue_stopped(qdev->ndev) && net_rsp != NULL) {
+ struct tx_ring *tx_ring = &qdev->tx_ring[net_rsp->txq_idx];
+ if (atomic_read(&tx_ring->queue_stopped) &&
+ (atomic_read(&tx_ring->tx_count) > (tx_ring->wq_len / 4)))
+ /*
+ * The queue got stopped because the tx_ring was full.
+ * Wake it up, because it's now at least 25% empty.
+ */
+ netif_wake_queue(qdev->ndev);
+ }
+
+ return count;
+}
+
+static int ql_clean_inbound_rx_ring(struct rx_ring *rx_ring, int budget)
+{
+ struct ql_adapter *qdev = rx_ring->qdev;
+ u32 prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
+ struct ql_net_rsp_iocb *net_rsp;
+ int count = 0;
+
+ /* While there are entries in the completion queue. */
+ while (prod != rx_ring->cnsmr_idx) {
+
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "cq_id = %d, prod = %d, cnsmr = %d.\n.", rx_ring->cq_id,
+ prod, rx_ring->cnsmr_idx);
+
+ net_rsp = rx_ring->curr_entry;
+ rmb();
+ switch (net_rsp->opcode) {
+ case OPCODE_IB_MAC_IOCB:
+ ql_process_mac_rx_intr(qdev, rx_ring,
+ (struct ib_mac_iocb_rsp *)
+ net_rsp);
+ break;
+
+ case OPCODE_IB_AE_IOCB:
+ ql_process_chip_ae_intr(qdev, (struct ib_ae_iocb_rsp *)
+ net_rsp);
+ break;
+ default:
+ {
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "Hit default case, not handled! dropping the packet, opcode = %x.\n",
+ net_rsp->opcode);
+ }
+ }
+ count++;
+ ql_update_cq(rx_ring);
+ prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
+ if (count == budget)
+ break;
+ }
+ ql_update_buffer_queues(qdev, rx_ring);
+ ql_write_cq_idx(rx_ring);
+ return count;
+}
+
+static int ql_napi_poll_msix(struct napi_struct *napi, int budget)
+{
+ struct rx_ring *rx_ring = container_of(napi, struct rx_ring, napi);
+ struct ql_adapter *qdev = rx_ring->qdev;
+ int work_done = ql_clean_inbound_rx_ring(rx_ring, budget);
+
+ QPRINTK(qdev, RX_STATUS, DEBUG, "Enter, NAPI POLL cq_id = %d.\n",
+ rx_ring->cq_id);
+
+ if (work_done < budget) {
+ __netif_rx_complete(qdev->ndev, napi);
+ ql_enable_completion_interrupt(qdev, rx_ring->irq);
+ }
+ return work_done;
+}
+
+static void ql_vlan_rx_register(struct net_device *ndev, struct vlan_group *grp)
+{
+ struct ql_adapter *qdev = netdev_priv(ndev);
+
+ qdev->vlgrp = grp;
+ if (grp) {
+ QPRINTK(qdev, IFUP, DEBUG, "Turning on VLAN in NIC_RCV_CFG.\n");
+ ql_write32(qdev, NIC_RCV_CFG, NIC_RCV_CFG_VLAN_MASK |
+ NIC_RCV_CFG_VLAN_MATCH_AND_NON);
+ } else {
+ QPRINTK(qdev, IFUP, DEBUG,
+ "Turning off VLAN in NIC_RCV_CFG.\n");
+ ql_write32(qdev, NIC_RCV_CFG, NIC_RCV_CFG_VLAN_MASK);
+ }
+}
+
+static void ql_vlan_rx_add_vid(struct net_device *ndev, u16 vid)
+{
+ struct ql_adapter *qdev = netdev_priv(ndev);
+ u32 enable_bit = MAC_ADDR_E;
+
+ spin_lock(&qdev->hw_lock);
+ if (ql_set_mac_addr_reg
+ (qdev, (u8 *) &enable_bit, MAC_ADDR_TYPE_VLAN, vid)) {
+ QPRINTK(qdev, IFUP, ERR, "Failed to init vlan address.\n");
+ }
+ spin_unlock(&qdev->hw_lock);
+}
+
+static void ql_vlan_rx_kill_vid(struct net_device *ndev, u16 vid)
+{
+ struct ql_adapter *qdev = netdev_priv(ndev);
+ u32 enable_bit = 0;
+
+ spin_lock(&qdev->hw_lock);
+ if (ql_set_mac_addr_reg
+ (qdev, (u8 *) &enable_bit, MAC_ADDR_TYPE_VLAN, vid)) {
+ QPRINTK(qdev, IFUP, ERR, "Failed to clear vlan address.\n");
+ }
+ spin_unlock(&qdev->hw_lock);
+
+}
+
+/* Worker thread to process a given rx_ring that is dedicated
+ * to outbound completions.
+ */
+static void ql_tx_clean(struct work_struct *work)
+{
+ struct rx_ring *rx_ring =
+ container_of(work, struct rx_ring, rx_work.work);
+ ql_clean_outbound_rx_ring(rx_ring);
+ ql_enable_completion_interrupt(rx_ring->qdev, rx_ring->irq);
+
+}
+
+/* Worker thread to process a given rx_ring that is dedicated
+ * to inbound completions.
+ */
+static void ql_rx_clean(struct work_struct *work)
+{
+ struct rx_ring *rx_ring =
+ container_of(work, struct rx_ring, rx_work.work);
+ ql_clean_inbound_rx_ring(rx_ring, 64);
+ ql_enable_completion_interrupt(rx_ring->qdev, rx_ring->irq);
+}
+
+/* MSI-X Multiple Vector Interrupt Handler for outbound completions. */
+static irqreturn_t qlge_msix_tx_isr(int irq, void *dev_id)
+{
+ struct rx_ring *rx_ring = dev_id;
+ queue_delayed_work_on(rx_ring->cpu, rx_ring->qdev->q_workqueue,
+ &rx_ring->rx_work, 0);
+ return IRQ_HANDLED;
+}
+
+/* MSI-X Multiple Vector Interrupt Handler for inbound completions. */
+static irqreturn_t qlge_msix_rx_isr(int irq, void *dev_id)
+{
+ struct rx_ring *rx_ring = dev_id;
+ struct ql_adapter *qdev = rx_ring->qdev;
+ netif_rx_schedule(qdev->ndev, &rx_ring->napi);
+ return IRQ_HANDLED;
+}
+
+/* We check here to see if we're already handling a legacy
+ * interrupt. If we are, then it must belong to another
+ * chip with which we're sharing the interrupt line.
+ */
+int ql_legacy_check(struct ql_adapter *qdev)
+{
+ int err;
+ spin_lock(&qdev->legacy_lock);
+ err = atomic_read(&qdev->intr_context[0].irq_cnt);
+ spin_unlock(&qdev->legacy_lock);
+ return err;
+}
+
+/* This handles a fatal error, MPI activity, and the default
+ * rx_ring in an MSI-X multiple vector environment.
+ * In MSI/Legacy environment it also process the rest of
+ * the rx_rings.
+ */
+static irqreturn_t qlge_isr(int irq, void *dev_id)
+{
+ struct rx_ring *rx_ring = dev_id;
+ struct ql_adapter *qdev = rx_ring->qdev;
+ struct intr_context *intr_context = &qdev->intr_context[0];
+ u32 var;
+ int i;
+ int work_done = 0;
+
+ if (qdev->legacy_check && qdev->legacy_check(qdev)) {
+ QPRINTK(qdev, INTR, INFO, "Already busy, not our interrupt.\n");
+ return IRQ_NONE; /* Not our interrupt */
+ }
+
+ var = ql_read32(qdev, STS);
+
+ /*
+ * Check for fatal error.
+ */
+ if (var & STS_FE) {
+ ql_queue_asic_error(qdev);
+ QPRINTK(qdev, INTR, ERR, "Got fatal error, STS = %x.\n", var);
+ var = ql_read32(qdev, ERR_STS);
+ QPRINTK(qdev, INTR, ERR,
+ "Resetting chip. Error Status Register = 0x%x\n", var);
+ return IRQ_HANDLED;
+ }
+
+ /*
+ * Check MPI processor activity.
+ */
+ if (var & STS_PI) {
+ /*
+ * We've got an async event or mailbox completion.
+ * Handle it and clear the source of the interrupt.
+ */
+ QPRINTK(qdev, INTR, ERR, "Got MPI processor interrupt.\n");
+ ql_disable_completion_interrupt(qdev, intr_context->intr);
+ queue_delayed_work_on(smp_processor_id(), qdev->workqueue,
+ &qdev->mpi_work, 0);
+ work_done++;
+ }
+
+ /*
+ * Check the default queue and wake handler if active.
+ */
+ rx_ring = &qdev->rx_ring[0];
+ if (ql_read_sh_reg(rx_ring->prod_idx_sh_reg) != rx_ring->cnsmr_idx) {
+ QPRINTK(qdev, INTR, INFO, "Waking handler for rx_ring[0].\n");
+ ql_disable_completion_interrupt(qdev, intr_context->intr);
+ queue_delayed_work_on(smp_processor_id(), qdev->q_workqueue,
+ &rx_ring->rx_work, 0);
+ work_done++;
+ }
+
+ if (!test_bit(QL_MSIX_ENABLED, &qdev->flags)) {
+ /*
+ * Start the DPC for each active queue.
+ */
+ for (i = 1; i < qdev->rx_ring_count; i++) {
+ rx_ring = &qdev->rx_ring[i];
+ if (ql_read_sh_reg(rx_ring->prod_idx_sh_reg) !=
+ rx_ring->cnsmr_idx) {
+ QPRINTK(qdev, INTR, INFO,
+ "Waking handler for rx_ring[%d].\n", i);
+ ql_disable_completion_interrupt(qdev,
+ intr_context->
+ intr);
+ if (i < qdev->rss_ring_first_cq_id)
+ queue_delayed_work_on(rx_ring->cpu,
+ qdev->q_workqueue,
+ &rx_ring->rx_work,
+ 0);
+ else
+ netif_rx_schedule(qdev->ndev,
+ &rx_ring->napi);
+ work_done++;
+ }
+ }
+ }
+ return work_done ? IRQ_HANDLED : IRQ_NONE;
+}
+
+static int ql_tso(struct sk_buff *skb, struct ob_mac_tso_iocb_req *mac_iocb_ptr)
+{
+
+ if (skb_is_gso(skb)) {
+ int err;
+ if (skb_header_cloned(skb)) {
+ err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+ if (err)
+ return err;
+ }
+
+ mac_iocb_ptr->opcode = OPCODE_OB_MAC_TSO_IOCB;
+ mac_iocb_ptr->flags3 |= OB_MAC_TSO_IOCB_IC;
+ mac_iocb_ptr->frame_len = cpu_to_le32((u32) skb->len);
+ mac_iocb_ptr->total_hdrs_len =
+ cpu_to_le16(skb_transport_offset(skb) + tcp_hdrlen(skb));
+ mac_iocb_ptr->net_trans_offset =
+ cpu_to_le16(skb_network_offset(skb) |
+ skb_transport_offset(skb)
+ << OB_MAC_TRANSPORT_HDR_SHIFT);
+ mac_iocb_ptr->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
+ mac_iocb_ptr->flags2 |= OB_MAC_TSO_IOCB_LSO;
+ if (likely(skb->protocol == htons(ETH_P_IP))) {
+ struct iphdr *iph = ip_hdr(skb);
+ iph->check = 0;
+ mac_iocb_ptr->flags1 |= OB_MAC_TSO_IOCB_IP4;
+ tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
+ iph->daddr, 0,
+ IPPROTO_TCP,
+ 0);
+ } else if (skb->protocol == htons(ETH_P_IPV6)) {
+ mac_iocb_ptr->flags1 |= OB_MAC_TSO_IOCB_IP6;
+ tcp_hdr(skb)->check =
+ ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
+ &ipv6_hdr(skb)->daddr,
+ 0, IPPROTO_TCP, 0);
+ }
+ return 1;
+ }
+ return 0;
+}
+
+static void ql_hw_csum_setup(struct sk_buff *skb,
+ struct ob_mac_tso_iocb_req *mac_iocb_ptr)
+{
+ int len;
+ struct iphdr *iph = ip_hdr(skb);
+ u16 *check;
+ mac_iocb_ptr->opcode = OPCODE_OB_MAC_TSO_IOCB;
+ mac_iocb_ptr->frame_len = cpu_to_le32((u32) skb->len);
+ mac_iocb_ptr->net_trans_offset =
+ cpu_to_le16(skb_network_offset(skb) |
+ skb_transport_offset(skb) << OB_MAC_TRANSPORT_HDR_SHIFT);
+
+ mac_iocb_ptr->flags1 |= OB_MAC_TSO_IOCB_IP4;
+ len = (ntohs(iph->tot_len) - (iph->ihl << 2));
+ if (likely(iph->protocol == IPPROTO_TCP)) {
+ check = &(tcp_hdr(skb)->check);
+ mac_iocb_ptr->flags2 |= OB_MAC_TSO_IOCB_TC;
+ mac_iocb_ptr->total_hdrs_len =
+ cpu_to_le16(skb_transport_offset(skb) +
+ (tcp_hdr(skb)->doff << 2));
+ } else {
+ check = &(udp_hdr(skb)->check);
+ mac_iocb_ptr->flags2 |= OB_MAC_TSO_IOCB_UC;
+ mac_iocb_ptr->total_hdrs_len =
+ cpu_to_le16(skb_transport_offset(skb) +
+ sizeof(struct udphdr));
+ }
+ *check = ~csum_tcpudp_magic(iph->saddr,
+ iph->daddr, len, iph->protocol, 0);
+}
+
+static int qlge_send(struct sk_buff *skb, struct net_device *ndev)
+{
+ struct tx_ring_desc *tx_ring_desc;
+ struct ob_mac_iocb_req *mac_iocb_ptr;
+ struct ql_adapter *qdev = netdev_priv(ndev);
+ int tso;
+ struct tx_ring *tx_ring;
+ u32 tx_ring_idx = (u32) QL_TXQ_IDX(qdev, skb);
+
+ tx_ring = &qdev->tx_ring[tx_ring_idx];
+
+ if (unlikely(atomic_read(&tx_ring->tx_count) < 2)) {
+ QPRINTK(qdev, TX_QUEUED, INFO,
+ "%s: shutting down tx queue %d du to lack of resources.\n",
+ __func__, tx_ring_idx);
+ netif_stop_queue(ndev);
+ atomic_inc(&tx_ring->queue_stopped);
+ return NETDEV_TX_BUSY;
+ }
+ tx_ring_desc = &tx_ring->q[tx_ring->prod_idx];
+ mac_iocb_ptr = tx_ring_desc->queue_entry;
+ memset((void *)mac_iocb_ptr, 0, sizeof(mac_iocb_ptr));
+ if (ql_map_send(qdev, mac_iocb_ptr, skb, tx_ring_desc) != NETDEV_TX_OK) {
+ QPRINTK(qdev, TX_QUEUED, ERR, "Could not map the segments.\n");
+ return NETDEV_TX_BUSY;
+ }
+
+ mac_iocb_ptr->opcode = OPCODE_OB_MAC_IOCB;
+ mac_iocb_ptr->tid = tx_ring_desc->index;
+ /* We use the upper 32-bits to store the tx queue for this IO.
+ * When we get the completion we can use it to establish the context.
+ */
+ mac_iocb_ptr->txq_idx = tx_ring_idx;
+ tx_ring_desc->skb = skb;
+
+ mac_iocb_ptr->frame_len = cpu_to_le16((u16) skb->len);
+
+ if (qdev->vlgrp && vlan_tx_tag_present(skb)) {
+ QPRINTK(qdev, TX_QUEUED, DEBUG, "Adding a vlan tag %d.\n",
+ vlan_tx_tag_get(skb));
+ mac_iocb_ptr->flags3 |= OB_MAC_IOCB_V;
+ mac_iocb_ptr->vlan_tci = cpu_to_le16(vlan_tx_tag_get(skb));
+ }
+ tso = ql_tso(skb, (struct ob_mac_tso_iocb_req *)mac_iocb_ptr);
+ if (tso < 0) {
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ } else if (unlikely(!tso) && (skb->ip_summed == CHECKSUM_PARTIAL)) {
+ ql_hw_csum_setup(skb,
+ (struct ob_mac_tso_iocb_req *)mac_iocb_ptr);
+ }
+ QL_DUMP_OB_MAC_IOCB(mac_iocb_ptr);
+ tx_ring->prod_idx++;
+ if (tx_ring->prod_idx == tx_ring->wq_len)
+ tx_ring->prod_idx = 0;
+ wmb();
+
+ ql_write_db_reg(tx_ring->prod_idx, tx_ring->prod_idx_db_reg);
+ ndev->trans_start = jiffies;
+ QPRINTK(qdev, TX_QUEUED, DEBUG, "tx queued, slot %d, len %d\n",
+ tx_ring->prod_idx, skb->len);
+
+ atomic_dec(&tx_ring->tx_count);
+ return NETDEV_TX_OK;
+}
+
+static void ql_free_shadow_space(struct ql_adapter *qdev)
+{
+ if (qdev->rx_ring_shadow_reg_area) {
+ pci_free_consistent(qdev->pdev,
+ PAGE_SIZE,
+ qdev->rx_ring_shadow_reg_area,
+ qdev->rx_ring_shadow_reg_dma);
+ qdev->rx_ring_shadow_reg_area = NULL;
+ }
+ if (qdev->tx_ring_shadow_reg_area) {
+ pci_free_consistent(qdev->pdev,
+ PAGE_SIZE,
+ qdev->tx_ring_shadow_reg_area,
+ qdev->tx_ring_shadow_reg_dma);
+ qdev->tx_ring_shadow_reg_area = NULL;
+ }
+}
+
+static int ql_alloc_shadow_space(struct ql_adapter *qdev)
+{
+ qdev->rx_ring_shadow_reg_area =
+ pci_alloc_consistent(qdev->pdev,
+ PAGE_SIZE, &qdev->rx_ring_shadow_reg_dma);
+ if (qdev->rx_ring_shadow_reg_area == NULL) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Allocation of RX shadow space failed.\n");
+ return -ENOMEM;
+ }
+ qdev->tx_ring_shadow_reg_area =
+ pci_alloc_consistent(qdev->pdev, PAGE_SIZE,
+ &qdev->tx_ring_shadow_reg_dma);
+ if (qdev->tx_ring_shadow_reg_area == NULL) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Allocation of TX shadow space failed.\n");
+ goto err_wqp_sh_area;
+ }
+ return 0;
+
+err_wqp_sh_area:
+ pci_free_consistent(qdev->pdev,
+ PAGE_SIZE,
+ qdev->rx_ring_shadow_reg_area,
+ qdev->rx_ring_shadow_reg_dma);
+ return -ENOMEM;
+}
+
+static void ql_init_tx_ring(struct ql_adapter *qdev, struct tx_ring *tx_ring)
+{
+ struct tx_ring_desc *tx_ring_desc;
+ int i;
+ struct ob_mac_iocb_req *mac_iocb_ptr;
+
+ mac_iocb_ptr = tx_ring->wq_base;
+ tx_ring_desc = tx_ring->q;
+ for (i = 0; i < tx_ring->wq_len; i++) {
+ tx_ring_desc->index = i;
+ tx_ring_desc->skb = NULL;
+ tx_ring_desc->queue_entry = mac_iocb_ptr;
+ mac_iocb_ptr++;
+ tx_ring_desc++;
+ }
+ atomic_set(&tx_ring->tx_count, tx_ring->wq_len);
+ atomic_set(&tx_ring->queue_stopped, 0);
+}
+
+static void ql_free_tx_resources(struct ql_adapter *qdev,
+ struct tx_ring *tx_ring)
+{
+ if (tx_ring->wq_base) {
+ pci_free_consistent(qdev->pdev, tx_ring->wq_size,
+ tx_ring->wq_base, tx_ring->wq_base_dma);
+ tx_ring->wq_base = NULL;
+ }
+ kfree(tx_ring->q);
+ tx_ring->q = NULL;
+}
+
+static int ql_alloc_tx_resources(struct ql_adapter *qdev,
+ struct tx_ring *tx_ring)
+{
+ tx_ring->wq_base =
+ pci_alloc_consistent(qdev->pdev, tx_ring->wq_size,
+ &tx_ring->wq_base_dma);
+
+ if ((tx_ring->wq_base == NULL)
+ || tx_ring->wq_base_dma & (tx_ring->wq_size - 1)) {
+ QPRINTK(qdev, IFUP, ERR, "tx_ring alloc failed.\n");
+ return -ENOMEM;
+ }
+ tx_ring->q =
+ kmalloc(tx_ring->wq_len * sizeof(struct tx_ring_desc), GFP_KERNEL);
+ if (tx_ring->q == NULL)
+ goto err;
+
+ return 0;
+err:
+ pci_free_consistent(qdev->pdev, tx_ring->wq_size,
+ tx_ring->wq_base, tx_ring->wq_base_dma);
+ return -ENOMEM;
+}
+
+void ql_free_lbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring)
+{
+ int i;
+ struct bq_desc *lbq_desc;
+
+ for (i = 0; i < rx_ring->lbq_len; i++) {
+ lbq_desc = &rx_ring->lbq[i];
+ if (lbq_desc->p.lbq_page) {
+ pci_unmap_page(qdev->pdev,
+ pci_unmap_addr(lbq_desc, mapaddr),
+ pci_unmap_len(lbq_desc, maplen),
+ PCI_DMA_FROMDEVICE);
+
+ put_page(lbq_desc->p.lbq_page);
+ lbq_desc->p.lbq_page = NULL;
+ }
+ lbq_desc->bq->addr_lo = 0;
+ lbq_desc->bq->addr_hi = 0;
+ }
+}
+
+/*
+ * Allocate and map a page for each element of the lbq.
+ */
+static int ql_alloc_lbq_buffers(struct ql_adapter *qdev,
+ struct rx_ring *rx_ring)
+{
+ int i;
+ struct bq_desc *lbq_desc;
+ u64 map;
+ struct bq_element *bq = rx_ring->lbq_base;
+
+ for (i = 0; i < rx_ring->lbq_len; i++) {
+ lbq_desc = &rx_ring->lbq[i];
+ memset(lbq_desc, 0, sizeof(lbq_desc));
+ lbq_desc->bq = bq;
+ lbq_desc->index = i;
+ lbq_desc->p.lbq_page = alloc_page(GFP_ATOMIC);
+ if (unlikely(!lbq_desc->p.lbq_page)) {
+ QPRINTK(qdev, IFUP, ERR, "failed alloc_page().\n");
+ goto mem_error;
+ } else {
+ map = pci_map_page(qdev->pdev,
+ lbq_desc->p.lbq_page,
+ 0, PAGE_SIZE, PCI_DMA_FROMDEVICE);
+ if (pci_dma_mapping_error(map)) {
+ QPRINTK(qdev, IFUP, ERR,
+ "PCI mapping failed.\n");
+ goto mem_error;
+ }
+ pci_unmap_addr_set(lbq_desc, mapaddr, map);
+ pci_unmap_len_set(lbq_desc, maplen, PAGE_SIZE);
+ bq->addr_lo = cpu_to_le32(map);
+ bq->addr_hi = cpu_to_le32(map >> 32);
+ }
+ bq++;
+ }
+ return 0;
+mem_error:
+ ql_free_lbq_buffers(qdev, rx_ring);
+ return -ENOMEM;
+}
+
+void ql_free_sbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring)
+{
+ int i;
+ struct bq_desc *sbq_desc;
+
+ for (i = 0; i < rx_ring->sbq_len; i++) {
+ sbq_desc = &rx_ring->sbq[i];
+ if (sbq_desc == NULL) {
+ QPRINTK(qdev, IFUP, ERR, "sbq_desc %d is NULL.\n", i);
+ return;
+ }
+ if (sbq_desc->p.skb) {
+ pci_unmap_single(qdev->pdev,
+ pci_unmap_addr(sbq_desc, mapaddr),
+ pci_unmap_len(sbq_desc, maplen),
+ PCI_DMA_FROMDEVICE);
+ dev_kfree_skb(sbq_desc->p.skb);
+ sbq_desc->p.skb = NULL;
+ }
+ if (sbq_desc->bq == NULL) {
+ QPRINTK(qdev, IFUP, ERR, "sbq_desc->bq %d is NULL.\n",
+ i);
+ return;
+ }
+ sbq_desc->bq->addr_lo = 0;
+ sbq_desc->bq->addr_hi = 0;
+ }
+}
+
+/* Allocate and map an skb for each element of the sbq. */
+static int ql_alloc_sbq_buffers(struct ql_adapter *qdev,
+ struct rx_ring *rx_ring)
+{
+ int i;
+ struct bq_desc *sbq_desc;
+ struct sk_buff *skb;
+ u64 map;
+ struct bq_element *bq = rx_ring->sbq_base;
+
+ for (i = 0; i < rx_ring->sbq_len; i++) {
+ sbq_desc = &rx_ring->sbq[i];
+ memset(sbq_desc, 0, sizeof(sbq_desc));
+ sbq_desc->index = i;
+ sbq_desc->bq = bq;
+ skb = netdev_alloc_skb(qdev->ndev, rx_ring->sbq_buf_size);
+ if (unlikely(!skb)) {
+ /* Better luck next round */
+ QPRINTK(qdev, IFUP, ERR,
+ "small buff alloc failed for %d bytes at index %d.\n",
+ rx_ring->sbq_buf_size, i);
+ goto mem_err;
+ }
+ skb_reserve(skb, QLGE_SB_PAD);
+ sbq_desc->p.skb = skb;
+ /*
+ * Map only half the buffer. Because the
+ * other half may get some data copied to it
+ * when the completion arrives.
+ */
+ map = pci_map_single(qdev->pdev,
+ skb->data,
+ rx_ring->sbq_buf_size / 2,
+ PCI_DMA_FROMDEVICE);
+ if (pci_dma_mapping_error(map)) {
+ QPRINTK(qdev, IFUP, ERR, "PCI mapping failed.\n");
+ goto mem_err;
+ }
+ pci_unmap_addr_set(sbq_desc, mapaddr, map);
+ pci_unmap_len_set(sbq_desc, maplen, rx_ring->sbq_buf_size / 2);
+ bq->addr_lo = /*sbq_desc->addr_lo = */
+ cpu_to_le32(map);
+ bq->addr_hi = /*sbq_desc->addr_hi = */
+ cpu_to_le32(map >> 32);
+ bq++;
+ }
+ return 0;
+mem_err:
+ ql_free_sbq_buffers(qdev, rx_ring);
+ return -ENOMEM;
+}
+
+static void ql_free_rx_resources(struct ql_adapter *qdev,
+ struct rx_ring *rx_ring)
+{
+ if (rx_ring->sbq_len)
+ ql_free_sbq_buffers(qdev, rx_ring);
+ if (rx_ring->lbq_len)
+ ql_free_lbq_buffers(qdev, rx_ring);
+
+ /* Free the small buffer queue. */
+ if (rx_ring->sbq_base) {
+ pci_free_consistent(qdev->pdev,
+ rx_ring->sbq_size,
+ rx_ring->sbq_base, rx_ring->sbq_base_dma);
+ rx_ring->sbq_base = NULL;
+ }
+
+ /* Free the small buffer queue control blocks. */
+ kfree(rx_ring->sbq);
+ rx_ring->sbq = NULL;
+
+ /* Free the large buffer queue. */
+ if (rx_ring->lbq_base) {
+ pci_free_consistent(qdev->pdev,
+ rx_ring->lbq_size,
+ rx_ring->lbq_base, rx_ring->lbq_base_dma);
+ rx_ring->lbq_base = NULL;
+ }
+
+ /* Free the large buffer queue control blocks. */
+ kfree(rx_ring->lbq);
+ rx_ring->lbq = NULL;
+
+ /* Free the rx queue. */
+ if (rx_ring->cq_base) {
+ pci_free_consistent(qdev->pdev,
+ rx_ring->cq_size,
+ rx_ring->cq_base, rx_ring->cq_base_dma);
+ rx_ring->cq_base = NULL;
+ }
+}
+
+/* Allocate queues and buffers for this completions queue based
+ * on the values in the parameter structure. */
+static int ql_alloc_rx_resources(struct ql_adapter *qdev,
+ struct rx_ring *rx_ring)
+{
+
+ /*
+ * Allocate the completion queue for this rx_ring.
+ */
+ rx_ring->cq_base =
+ pci_alloc_consistent(qdev->pdev, rx_ring->cq_size,
+ &rx_ring->cq_base_dma);
+
+ if (rx_ring->cq_base == NULL) {
+ QPRINTK(qdev, IFUP, ERR, "rx_ring alloc failed.\n");
+ return -ENOMEM;
+ }
+
+ if (rx_ring->sbq_len) {
+ /*
+ * Allocate small buffer queue.
+ */
+ rx_ring->sbq_base =
+ pci_alloc_consistent(qdev->pdev, rx_ring->sbq_size,
+ &rx_ring->sbq_base_dma);
+
+ if (rx_ring->sbq_base == NULL) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Small buffer queue allocation failed.\n");
+ goto err_mem;
+ }
+
+ /*
+ * Allocate small buffer queue control blocks.
+ */
+ rx_ring->sbq =
+ kmalloc(rx_ring->sbq_len * sizeof(struct bq_desc),
+ GFP_KERNEL);
+ if (rx_ring->sbq == NULL) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Small buffer queue control block allocation failed.\n");
+ goto err_mem;
+ }
+
+ if (ql_alloc_sbq_buffers(qdev, rx_ring)) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Small buffer allocation failed.\n");
+ goto err_mem;
+ }
+ }
+
+ if (rx_ring->lbq_len) {
+ /*
+ * Allocate large buffer queue.
+ */
+ rx_ring->lbq_base =
+ pci_alloc_consistent(qdev->pdev, rx_ring->lbq_size,
+ &rx_ring->lbq_base_dma);
+
+ if (rx_ring->lbq_base == NULL) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Large buffer queue allocation failed.\n");
+ goto err_mem;
+ }
+ /*
+ * Allocate large buffer queue control blocks.
+ */
+ rx_ring->lbq =
+ kmalloc(rx_ring->lbq_len * sizeof(struct bq_desc),
+ GFP_KERNEL);
+ if (rx_ring->lbq == NULL) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Large buffer queue control block allocation failed.\n");
+ goto err_mem;
+ }
+
+ /*
+ * Allocate the buffers.
+ */
+ if (ql_alloc_lbq_buffers(qdev, rx_ring)) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Large buffer allocation failed.\n");
+ goto err_mem;
+ }
+ }
+
+ return 0;
+
+err_mem:
+ ql_free_rx_resources(qdev, rx_ring);
+ return -ENOMEM;
+}
+
+static void ql_tx_ring_clean(struct ql_adapter *qdev)
+{
+ struct tx_ring *tx_ring;
+ struct tx_ring_desc *tx_ring_desc;
+ int i, j;
+
+ /*
+ * Loop through all queues and free
+ * any resources.
+ */
+ for (j = 0; j < qdev->tx_ring_count; j++) {
+ tx_ring = &qdev->tx_ring[j];
+ for (i = 0; i < tx_ring->wq_len; i++) {
+ tx_ring_desc = &tx_ring->q[i];
+ if (tx_ring_desc && tx_ring_desc->skb) {
+ QPRINTK(qdev, IFDOWN, ERR,
+ "Freeing lost SKB %p, from queue %d, index %d.\n",
+ tx_ring_desc->skb, j,
+ tx_ring_desc->index);
+ ql_unmap_send(qdev, tx_ring_desc,
+ tx_ring_desc->map_cnt);
+ dev_kfree_skb(tx_ring_desc->skb);
+ tx_ring_desc->skb = NULL;
+ }
+ }
+ }
+}
+
+static void ql_free_ring_cb(struct ql_adapter *qdev)
+{
+ kfree(qdev->ring_mem);
+}
+
+static int ql_alloc_ring_cb(struct ql_adapter *qdev)
+{
+ /* Allocate space for tx/rx ring control blocks. */
+ qdev->ring_mem_size =
+ (qdev->tx_ring_count * sizeof(struct tx_ring)) +
+ (qdev->rx_ring_count * sizeof(struct rx_ring));
+ qdev->ring_mem = kmalloc(qdev->ring_mem_size, GFP_KERNEL);
+ if (qdev->ring_mem == NULL) {
+ return -ENOMEM;
+ } else {
+ qdev->rx_ring = qdev->ring_mem;
+ qdev->tx_ring = qdev->ring_mem +
+ (qdev->rx_ring_count * sizeof(struct rx_ring));
+ }
+ return 0;
+}
+
+static void ql_free_mem_resources(struct ql_adapter *qdev)
+{
+ int i;
+
+ for (i = 0; i < qdev->tx_ring_count; i++)
+ ql_free_tx_resources(qdev, &qdev->tx_ring[i]);
+ for (i = 0; i < qdev->rx_ring_count; i++)
+ ql_free_rx_resources(qdev, &qdev->rx_ring[i]);
+ ql_free_shadow_space(qdev);
+}
+
+static int ql_alloc_mem_resources(struct ql_adapter *qdev)
+{
+ int i;
+
+ /* Allocate space for our shadow registers and such. */
+ if (ql_alloc_shadow_space(qdev))
+ return -ENOMEM;
+
+ for (i = 0; i < qdev->rx_ring_count; i++) {
+ if (ql_alloc_rx_resources(qdev, &qdev->rx_ring[i]) != 0) {
+ QPRINTK(qdev, IFUP, ERR,
+ "RX resource allocation failed.\n");
+ goto err_mem;
+ }
+ }
+ /* Allocate tx queue resources */
+ for (i = 0; i < qdev->tx_ring_count; i++) {
+ if (ql_alloc_tx_resources(qdev, &qdev->tx_ring[i]) != 0) {
+ QPRINTK(qdev, IFUP, ERR,
+ "TX resource allocation failed.\n");
+ goto err_mem;
+ }
+ }
+ return 0;
+
+err_mem:
+ ql_free_mem_resources(qdev);
+ return -ENOMEM;
+}
+
+/* Set up the rx ring control block and pass it to the chip.
+ * The control block is defined as
+ * "Completion Queue Initialization Control Block", or cqicb.
+ */
+static int ql_start_rx_ring(struct ql_adapter *qdev, struct rx_ring *rx_ring)
+{
+ struct cqicb *cqicb = &rx_ring->cqicb;
+ void *shadow_reg = qdev->rx_ring_shadow_reg_area +
+ (rx_ring->cq_id * sizeof(u64) * 4);
+ u64 shadow_reg_dma = qdev->rx_ring_shadow_reg_dma +
+ (rx_ring->cq_id * sizeof(u64) * 4);
+ void __iomem *doorbell_area =
+ qdev->doorbell_area + (DB_PAGE_SIZE * (128 + rx_ring->cq_id));
+ int err = 0;
+ u16 bq_len;
+
+ /* Set up the shadow registers for this ring. */
+ rx_ring->prod_idx_sh_reg = shadow_reg;
+ rx_ring->prod_idx_sh_reg_dma = shadow_reg_dma;
+ shadow_reg += sizeof(u64);
+ shadow_reg_dma += sizeof(u64);
+ rx_ring->lbq_base_indirect = shadow_reg;
+ rx_ring->lbq_base_indirect_dma = shadow_reg_dma;
+ shadow_reg += sizeof(u64);
+ shadow_reg_dma += sizeof(u64);
+ rx_ring->sbq_base_indirect = shadow_reg;
+ rx_ring->sbq_base_indirect_dma = shadow_reg_dma;
+
+ /* PCI doorbell mem area + 0x00 for consumer index register */
+ rx_ring->cnsmr_idx_db_reg = (u32 *) doorbell_area;
+ rx_ring->cnsmr_idx = 0;
+ rx_ring->curr_entry = rx_ring->cq_base;
+
+ /* PCI doorbell mem area + 0x04 for valid register */
+ rx_ring->valid_db_reg = doorbell_area + 0x04;
+
+ /* PCI doorbell mem area + 0x18 for large buffer consumer */
+ rx_ring->lbq_prod_idx_db_reg = (u32 *) (doorbell_area + 0x18);
+
+ /* PCI doorbell mem area + 0x1c */
+ rx_ring->sbq_prod_idx_db_reg = (u32 *) (doorbell_area + 0x1c);
+
+ memset((void *)cqicb, 0, sizeof(struct cqicb));
+ cqicb->msix_vect = rx_ring->irq;
+
+ cqicb->len = cpu_to_le16(rx_ring->cq_len | LEN_V | LEN_CPP_CONT);
+
+ cqicb->addr_lo = cpu_to_le32(rx_ring->cq_base_dma);
+ cqicb->addr_hi = cpu_to_le32((u64) rx_ring->cq_base_dma >> 32);
+
+ cqicb->prod_idx_addr_lo = cpu_to_le32(rx_ring->prod_idx_sh_reg_dma);
+ cqicb->prod_idx_addr_hi =
+ cpu_to_le32((u64) rx_ring->prod_idx_sh_reg_dma >> 32);
+
+ /*
+ * Set up the control block load flags.
+ */
+ cqicb->flags = FLAGS_LC | /* Load queue base address */
+ FLAGS_LV | /* Load MSI-X vector */
+ FLAGS_LI; /* Load irq delay values */
+ if (rx_ring->lbq_len) {
+ cqicb->flags |= FLAGS_LL; /* Load lbq values */
+ *((u64 *) rx_ring->lbq_base_indirect) = rx_ring->lbq_base_dma;
+ cqicb->lbq_addr_lo =
+ cpu_to_le32(rx_ring->lbq_base_indirect_dma);
+ cqicb->lbq_addr_hi =
+ cpu_to_le32((u64) rx_ring->lbq_base_indirect_dma >> 32);
+ cqicb->lbq_buf_size = cpu_to_le32(rx_ring->lbq_buf_size);
+ bq_len = (u16) rx_ring->lbq_len;
+ cqicb->lbq_len = cpu_to_le16(bq_len);
+ rx_ring->lbq_prod_idx = rx_ring->lbq_len - 16;
+ rx_ring->lbq_curr_idx = 0;
+ rx_ring->lbq_clean_idx = rx_ring->lbq_prod_idx;
+ rx_ring->lbq_free_cnt = 16;
+ }
+ if (rx_ring->sbq_len) {
+ cqicb->flags |= FLAGS_LS; /* Load sbq values */
+ *((u64 *) rx_ring->sbq_base_indirect) = rx_ring->sbq_base_dma;
+ cqicb->sbq_addr_lo =
+ cpu_to_le32(rx_ring->sbq_base_indirect_dma);
+ cqicb->sbq_addr_hi =
+ cpu_to_le32((u64) rx_ring->sbq_base_indirect_dma >> 32);
+ cqicb->sbq_buf_size =
+ cpu_to_le16(((rx_ring->sbq_buf_size / 2) + 8) & 0xfffffff8);
+ bq_len = (u16) rx_ring->sbq_len;
+ cqicb->sbq_len = cpu_to_le16(bq_len);
+ rx_ring->sbq_prod_idx = rx_ring->sbq_len - 16;
+ rx_ring->sbq_curr_idx = 0;
+ rx_ring->sbq_clean_idx = rx_ring->sbq_prod_idx;
+ rx_ring->sbq_free_cnt = 16;
+ }
+ switch (rx_ring->type) {
+ case TX_Q:
+ /* If there's only one interrupt, then we use
+ * worker threads to process the outbound
+ * completion handling rx_rings. We do this so
+ * they can be run on multiple CPUs. There is
+ * room to play with this more where we would only
+ * run in a worker if there are more than x number
+ * of outbound completions on the queue and more
+ * than one queue active. Some threshold that
+ * would indicate a benefit in spite of the cost
+ * of a context switch.
+ * If there's more than one interrupt, then the
+ * outbound completions are processed in the ISR.
+ */
+ if (!test_bit(QL_MSIX_ENABLED, &qdev->flags))
+ INIT_DELAYED_WORK(&rx_ring->rx_work, ql_tx_clean);
+ else {
+ /* With all debug warnings on we see a WARN_ON message
+ * when we free the skb in the interrupt context.
+ */
+ INIT_DELAYED_WORK(&rx_ring->rx_work, ql_tx_clean);
+ }
+ cqicb->irq_delay = cpu_to_le16(qdev->tx_coalesce_usecs);
+ cqicb->pkt_delay = cpu_to_le16(qdev->tx_max_coalesced_frames);
+ break;
+ case DEFAULT_Q:
+ INIT_DELAYED_WORK(&rx_ring->rx_work, ql_rx_clean);
+ cqicb->irq_delay = 0;
+ cqicb->pkt_delay = 0;
+ break;
+ case RX_Q:
+ /* Inbound completion handling rx_rings run in
+ * separate NAPI contexts.
+ */
+ netif_napi_add(qdev->ndev, &rx_ring->napi, ql_napi_poll_msix,
+ 64);
+ cqicb->irq_delay = cpu_to_le16(qdev->rx_coalesce_usecs);
+ cqicb->pkt_delay = cpu_to_le16(qdev->rx_max_coalesced_frames);
+ break;
+ default:
+ QPRINTK(qdev, IFUP, DEBUG, "Invalid rx_ring->type = %d.\n",
+ rx_ring->type);
+ }
+ QPRINTK(qdev, IFUP, INFO, "Initializing rx work queue.\n");
+ err = ql_write_cfg(qdev, cqicb, sizeof(struct cqicb),
+ CFG_LCQ, rx_ring->cq_id);
+ if (err) {
+ QPRINTK(qdev, IFUP, ERR, "Failed to load CQICB.\n");
+ return err;
+ }
+ QPRINTK(qdev, IFUP, INFO, "Successfully loaded CQICB.\n");
+ /*
+ * Advance the producer index for the buffer queues.
+ */
+ wmb();
+ if (rx_ring->lbq_len)
+ ql_write_db_reg(rx_ring->lbq_prod_idx,
+ rx_ring->lbq_prod_idx_db_reg);
+ if (rx_ring->sbq_len)
+ ql_write_db_reg(rx_ring->sbq_prod_idx,
+ rx_ring->sbq_prod_idx_db_reg);
+ return err;
+}
+
+static int ql_start_tx_ring(struct ql_adapter *qdev, struct tx_ring *tx_ring)
+{
+ struct wqicb *wqicb = (struct wqicb *)tx_ring;
+ void __iomem *doorbell_area =
+ qdev->doorbell_area + (DB_PAGE_SIZE * tx_ring->wq_id);
+ void *shadow_reg = qdev->tx_ring_shadow_reg_area +
+ (tx_ring->wq_id * sizeof(u64));
+ u64 shadow_reg_dma = qdev->tx_ring_shadow_reg_dma +
+ (tx_ring->wq_id * sizeof(u64));
+ int err = 0;
+
+ /*
+ * Assign doorbell registers for this tx_ring.
+ */
+ /* TX PCI doorbell mem area for tx producer index */
+ tx_ring->prod_idx_db_reg = (u32 *) doorbell_area;
+ tx_ring->prod_idx = 0;
+ /* TX PCI doorbell mem area + 0x04 */
+ tx_ring->valid_db_reg = doorbell_area + 0x04;
+
+ /*
+ * Assign shadow registers for this tx_ring.
+ */
+ tx_ring->cnsmr_idx_sh_reg = shadow_reg;
+ tx_ring->cnsmr_idx_sh_reg_dma = shadow_reg_dma;
+
+ wqicb->len = cpu_to_le16(tx_ring->wq_len | Q_LEN_V | Q_LEN_CPP_CONT);
+ wqicb->flags = cpu_to_le16(Q_FLAGS_LC |
+ Q_FLAGS_LB | Q_FLAGS_LI | Q_FLAGS_LO);
+ wqicb->cq_id_rss = cpu_to_le16(tx_ring->cq_id);
+ wqicb->rid = 0;
+ wqicb->addr_lo = cpu_to_le32(tx_ring->wq_base_dma);
+ wqicb->addr_hi = cpu_to_le32((u64) tx_ring->wq_base_dma >> 32);
+
+ wqicb->cnsmr_idx_addr_lo = cpu_to_le32(tx_ring->cnsmr_idx_sh_reg_dma);
+ wqicb->cnsmr_idx_addr_hi =
+ cpu_to_le32((u64) tx_ring->cnsmr_idx_sh_reg_dma >> 32);
+
+ ql_init_tx_ring(qdev, tx_ring);
+
+ err = ql_write_cfg(qdev, wqicb, sizeof(wqicb), CFG_LRQ,
+ (u16) tx_ring->wq_id);
+ if (err) {
+ QPRINTK(qdev, IFUP, ERR, "Failed to load tx_ring.\n");
+ return err;
+ }
+ QPRINTK(qdev, IFUP, INFO, "Successfully loaded WQICB.\n");
+ return err;
+}
+
+static void ql_disable_msix(struct ql_adapter *qdev)
+{
+ if (test_bit(QL_MSIX_ENABLED, &qdev->flags)) {
+ pci_disable_msix(qdev->pdev);
+ clear_bit(QL_MSIX_ENABLED, &qdev->flags);
+ kfree(qdev->msi_x_entry);
+ qdev->msi_x_entry = NULL;
+ } else if (test_bit(QL_MSI_ENABLED, &qdev->flags)) {
+ pci_disable_msi(qdev->pdev);
+ clear_bit(QL_MSI_ENABLED, &qdev->flags);
+ }
+}
+
+static void ql_enable_msix(struct ql_adapter *qdev)
+{
+ int i;
+
+ qdev->intr_count = 1;
+ /* Get the MSIX vectors. */
+ if (irq_type == MSIX_IRQ) {
+ /* Try to alloc space for the msix struct,
+ * if it fails then go to MSI/legacy.
+ */
+ qdev->msi_x_entry = kcalloc(qdev->rx_ring_count,
+ sizeof(struct msix_entry),
+ GFP_KERNEL);
+ if (!qdev->msi_x_entry) {
+ irq_type = MSI_IRQ;
+ goto msi;
+ }
+
+ for (i = 0; i < qdev->rx_ring_count; i++)
+ qdev->msi_x_entry[i].entry = i;
+
+ if (!pci_enable_msix
+ (qdev->pdev, qdev->msi_x_entry, qdev->rx_ring_count)) {
+ set_bit(QL_MSIX_ENABLED, &qdev->flags);
+ qdev->intr_count = qdev->rx_ring_count;
+ QPRINTK(qdev, IFUP, INFO,
+ "MSI-X Enabled, got %d vectors.\n",
+ qdev->intr_count);
+ return;
+ } else {
+ kfree(qdev->msi_x_entry);
+ qdev->msi_x_entry = NULL;
+ QPRINTK(qdev, IFUP, WARNING,
+ "MSI-X Enable failed, trying MSI.\n");
+ irq_type = MSI_IRQ;
+ }
+ }
+msi:
+ if (irq_type == MSI_IRQ) {
+ if (!pci_enable_msi(qdev->pdev)) {
+ set_bit(QL_MSI_ENABLED, &qdev->flags);
+ QPRINTK(qdev, IFUP, INFO,
+ "Running with MSI interrupts.\n");
+ return;
+ }
+ }
+ irq_type = LEG_IRQ;
+ spin_lock_init(&qdev->legacy_lock);
+ qdev->legacy_check = ql_legacy_check;
+ QPRINTK(qdev, IFUP, DEBUG, "Running with legacy interrupts.\n");
+}
+
+/*
+ * Here we build the intr_context structures based on
+ * our rx_ring count and intr vector count.
+ * The intr_context structure is used to hook each vector
+ * to possibly different handlers.
+ */
+static void ql_resolve_queues_to_irqs(struct ql_adapter *qdev)
+{
+ int i = 0;
+ struct intr_context *intr_context = &qdev->intr_context[0];
+
+ ql_enable_msix(qdev);
+
+ if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags))) {
+ /* Each rx_ring has it's
+ * own intr_context since we have separate
+ * vectors for each queue.
+ * This only true when MSI-X is enabled.
+ */
+ for (i = 0; i < qdev->intr_count; i++, intr_context++) {
+ qdev->rx_ring[i].irq = i;
+ intr_context->intr = i;
+ intr_context->qdev = qdev;
+ /*
+ * We set up each vectors enable/disable/read bits so
+ * there's no bit/mask calculations in the critical path.
+ */
+ intr_context->intr_en_mask =
+ INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK |
+ INTR_EN_TYPE_ENABLE | INTR_EN_IHD_MASK | INTR_EN_IHD
+ | i;
+ intr_context->intr_dis_mask =
+ INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK |
+ INTR_EN_TYPE_DISABLE | INTR_EN_IHD_MASK |
+ INTR_EN_IHD | i;
+ intr_context->intr_read_mask =
+ INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK |
+ INTR_EN_TYPE_READ | INTR_EN_IHD_MASK | INTR_EN_IHD |
+ i;
+
+ if (i == 0) {
+ /*
+ * Default queue handles bcast/mcast plus
+ * async events. Needs buffers.
+ */
+ intr_context->handler = qlge_isr;
+ sprintf(intr_context->name, "%s-default-queue",
+ qdev->ndev->name);
+ } else if (i < qdev->rss_ring_first_cq_id) {
+ /*
+ * Outbound queue is for outbound completions only.
+ */
+ intr_context->handler = qlge_msix_tx_isr;
+ sprintf(intr_context->name, "%s-txq-%d",
+ qdev->ndev->name, i);
+ } else {
+ /*
+ * Inbound queues handle unicast frames only.
+ */
+ intr_context->handler = qlge_msix_rx_isr;
+ sprintf(intr_context->name, "%s-rxq-%d",
+ qdev->ndev->name, i);
+ }
+ }
+ } else {
+ /*
+ * All rx_rings use the same intr_context since
+ * there is only one vector.
+ */
+ intr_context->intr = 0;
+ intr_context->qdev = qdev;
+ /*
+ * We set up each vectors enable/disable/read bits so
+ * there's no bit/mask calculations in the critical path.
+ */
+ intr_context->intr_en_mask =
+ INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK | INTR_EN_TYPE_ENABLE;
+ intr_context->intr_dis_mask =
+ INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK |
+ INTR_EN_TYPE_DISABLE;
+ intr_context->intr_read_mask =
+ INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK | INTR_EN_TYPE_READ;
+ /*
+ * Single interrupt means one handler for all rings.
+ */
+ intr_context->handler = qlge_isr;
+ sprintf(intr_context->name, "%s-single_irq", qdev->ndev->name);
+ for (i = 0; i < qdev->rx_ring_count; i++)
+ qdev->rx_ring[i].irq = 0;
+ }
+}
+
+static void ql_free_irq(struct ql_adapter *qdev)
+{
+ int i;
+ struct intr_context *intr_context = &qdev->intr_context[0];
+
+ for (i = 0; i < qdev->intr_count; i++, intr_context++) {
+ if (intr_context->hooked) {
+ if (test_bit(QL_MSIX_ENABLED, &qdev->flags)) {
+ free_irq(qdev->msi_x_entry[i].vector,
+ &qdev->rx_ring[i]);
+ QPRINTK(qdev, IFDOWN, ERR,
+ "freeing msix interrupt %d.\n", i);
+ } else {
+ free_irq(qdev->pdev->irq, &qdev->rx_ring[0]);
+ QPRINTK(qdev, IFDOWN, ERR,
+ "freeing msi interrupt %d.\n", i);
+ }
+ }
+ }
+ ql_disable_msix(qdev);
+}
+
+static int ql_request_irq(struct ql_adapter *qdev)
+{
+ int i;
+ int status = 0;
+ struct pci_dev *pdev = qdev->pdev;
+ struct intr_context *intr_context = &qdev->intr_context[0];
+
+ ql_resolve_queues_to_irqs(qdev);
+
+ for (i = 0; i < qdev->intr_count; i++, intr_context++) {
+ atomic_set(&intr_context->irq_cnt, 0);
+ if (test_bit(QL_MSIX_ENABLED, &qdev->flags)) {
+ status = request_irq(qdev->msi_x_entry[i].vector,
+ intr_context->handler,
+ 0,
+ intr_context->name,
+ &qdev->rx_ring[i]);
+ if (status) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Failed request for MSIX interrupt %d.\n",
+ i);
+ goto err_irq;
+ } else {
+ QPRINTK(qdev, IFUP, INFO,
+ "Hooked intr %d, queue type %s%s%s, with name %s.\n",
+ i,
+ qdev->rx_ring[i].type ==
+ DEFAULT_Q ? "DEFAULT_Q" : "",
+ qdev->rx_ring[i].type ==
+ TX_Q ? "TX_Q" : "",
+ qdev->rx_ring[i].type ==
+ RX_Q ? "RX_Q" : "", intr_context->name);
+ }
+ } else {
+ QPRINTK(qdev, IFUP, DEBUG,
+ "trying msi or legacy interrupts.\n");
+ QPRINTK(qdev, IFUP, DEBUG,
+ "%s: irq = %d.\n", __func__, pdev->irq);
+ QPRINTK(qdev, IFUP, DEBUG,
+ "%s: context->name = %s.\n", __func__,
+ intr_context->name);
+ QPRINTK(qdev, IFUP, DEBUG,
+ "%s: dev_id = 0x%p.\n", __func__,
+ &qdev->rx_ring[0]);
+ status =
+ request_irq(pdev->irq, qlge_isr,
+ test_bit(QL_MSI_ENABLED,
+ &qdev->
+ flags) ? 0 : IRQF_SHARED,
+ intr_context->name, &qdev->rx_ring[0]);
+ if (status)
+ goto err_irq;
+
+ QPRINTK(qdev, IFUP, ERR,
+ "Hooked intr %d, queue type %s%s%s, with name %s.\n",
+ i,
+ qdev->rx_ring[0].type ==
+ DEFAULT_Q ? "DEFAULT_Q" : "",
+ qdev->rx_ring[0].type == TX_Q ? "TX_Q" : "",
+ qdev->rx_ring[0].type == RX_Q ? "RX_Q" : "",
+ intr_context->name);
+ }
+ intr_context->hooked = 1;
+ }
+ return status;
+err_irq:
+ QPRINTK(qdev, IFUP, ERR, "Failed to get the interrupts!!!/n");
+ ql_free_irq(qdev);
+ return status;
+}
+
+static int ql_start_rss(struct ql_adapter *qdev)
+{
+ struct ricb *ricb = &qdev->ricb;
+ int status = 0;
+ int i;
+ u8 *hash_id = (u8 *) ricb->hash_cq_id;
+
+ memset((void *)ricb, 0, sizeof(ricb));
+
+ ricb->base_cq = qdev->rss_ring_first_cq_id | RSS_L4K;
+ ricb->flags =
+ (RSS_L6K | RSS_LI | RSS_LB | RSS_LM | RSS_RI4 | RSS_RI6 | RSS_RT4 |
+ RSS_RT6);
+ ricb->mask = cpu_to_le16(qdev->rss_ring_count - 1);
+
+ /*
+ * Fill out the Indirection Table.
+ */
+ for (i = 0; i < 32; i++)
+ hash_id[i] = i & 1;
+
+ /*
+ * Random values for the IPv6 and IPv4 Hash Keys.
+ */
+ get_random_bytes((void *)&ricb->ipv6_hash_key[0], 40);
+ get_random_bytes((void *)&ricb->ipv4_hash_key[0], 16);
+
+ QPRINTK(qdev, IFUP, INFO, "Initializing RSS.\n");
+
+ status = ql_write_cfg(qdev, ricb, sizeof(ricb), CFG_LR, 0);
+ if (status) {
+ QPRINTK(qdev, IFUP, ERR, "Failed to load RICB.\n");
+ return status;
+ }
+ QPRINTK(qdev, IFUP, INFO, "Successfully loaded RICB.\n");
+ return status;
+}
+
+/* Initialize the frame-to-queue routing. */
+static int ql_route_initialize(struct ql_adapter *qdev)
+{
+ int status = 0;
+ int i;
+
+ /* Clear all the entries in the routing table. */
+ for (i = 0; i < 16; i++) {
+ status = ql_set_routing_reg(qdev, i, 0, 0);
+ if (status) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Failed to init routing register for CAM packets.\n");
+ return status;
+ }
+ }
+
+ status = ql_set_routing_reg(qdev, RT_IDX_ALL_ERR_SLOT, RT_IDX_ERR, 1);
+ if (status) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Failed to init routing register for error packets.\n");
+ return status;
+ }
+ status = ql_set_routing_reg(qdev, RT_IDX_BCAST_SLOT, RT_IDX_BCAST, 1);
+ if (status) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Failed to init routing register for broadcast packets.\n");
+ return status;
+ }
+ /* If we have more than one inbound queue, then turn on RSS in the
+ * routing block.
+ */
+ if (qdev->rss_ring_count > 1) {
+ status = ql_set_routing_reg(qdev, RT_IDX_RSS_MATCH_SLOT,
+ RT_IDX_RSS_MATCH, 1);
+ if (status) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Failed to init routing register for MATCH RSS packets.\n");
+ return status;
+ }
+ }
+
+ status = ql_set_routing_reg(qdev, RT_IDX_CAM_HIT_SLOT,
+ RT_IDX_CAM_HIT, 1);
+ if (status) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Failed to init routing register for CAM packets.\n");
+ return status;
+ }
+ return status;
+}
+
+static int ql_adapter_initialize(struct ql_adapter *qdev)
+{
+ u32 value, mask;
+ int i;
+ int status = 0;
+
+ /*
+ * Set up the System register to halt on errors.
+ */
+ value = SYS_EFE | SYS_FAE;
+ mask = value << 16;
+ ql_write32(qdev, SYS, mask | value);
+
+ /* Set the default queue. */
+ value = NIC_RCV_CFG_DFQ;
+ mask = NIC_RCV_CFG_DFQ_MASK;
+ ql_write32(qdev, NIC_RCV_CFG, (mask | value));
+
+ /* Set the MPI interrupt to enabled. */
+ ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16) | INTR_MASK_PI);
+
+ /* Enable the function, set pagesize, enable error checking. */
+ value = FSC_FE | FSC_EPC_INBOUND | FSC_EPC_OUTBOUND |
+ FSC_EC | FSC_VM_PAGE_4K | FSC_SH;
+
+ /* Set/clear header splitting. */
+ mask = FSC_VM_PAGESIZE_MASK |
+ FSC_DBL_MASK | FSC_DBRST_MASK | (value << 16);
+ ql_write32(qdev, FSC, mask | value);
+
+ ql_write32(qdev, SPLT_HDR, SPLT_HDR_EP |
+ min(SMALL_BUFFER_SIZE, MAX_SPLIT_SIZE));
+
+ /* Start up the rx queues. */
+ for (i = 0; i < qdev->rx_ring_count; i++) {
+ status = ql_start_rx_ring(qdev, &qdev->rx_ring[i]);
+ if (status) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Failed to start rx ring[%d].\n", i);
+ return status;
+ }
+ }
+
+ /* If there is more than one inbound completion queue
+ * then download a RICB to configure RSS.
+ */
+ if (qdev->rss_ring_count > 1) {
+ status = ql_start_rss(qdev);
+ if (status) {
+ QPRINTK(qdev, IFUP, ERR, "Failed to start RSS.\n");
+ return status;
+ }
+ }
+
+ /* Start up the tx queues. */
+ for (i = 0; i < qdev->tx_ring_count; i++) {
+ status = ql_start_tx_ring(qdev, &qdev->tx_ring[i]);
+ if (status) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Failed to start tx ring[%d].\n", i);
+ return status;
+ }
+ }
+
+ status = ql_port_initialize(qdev);
+ if (status) {
+ QPRINTK(qdev, IFUP, ERR, "Failed to start port.\n");
+ return status;
+ }
+
+ status = ql_set_mac_addr_reg(qdev, (u8 *) qdev->ndev->perm_addr,
+ MAC_ADDR_TYPE_CAM_MAC, qdev->func);
+ if (status) {
+ QPRINTK(qdev, IFUP, ERR, "Failed to init mac address.\n");
+ return status;
+ }
+
+ status = ql_route_initialize(qdev);
+ if (status) {
+ QPRINTK(qdev, IFUP, ERR, "Failed to init routing table.\n");
+ return status;
+ }
+
+ /* Start NAPI for the RSS queues. */
+ for (i = qdev->rss_ring_first_cq_id; i < qdev->rx_ring_count; i++) {
+ QPRINTK(qdev, IFUP, INFO, "Enabling NAPI for rx_ring[%d].\n",
+ i);
+ napi_enable(&qdev->rx_ring[i].napi);
+ }
+
+ return status;
+}
+
+/* Issue soft reset to chip. */
+static int ql_adapter_reset(struct ql_adapter *qdev)
+{
+ u32 value;
+ int max_wait_time;
+ int status = 0;
+ int resetCnt = 0;
+
+#define MAX_RESET_CNT 1
+issueReset:
+ resetCnt++;
+ QPRINTK(qdev, IFDOWN, DEBUG, "Issue soft reset to chip.\n");
+ ql_write32(qdev, RST_FO, (RST_FO_FR << 16) | RST_FO_FR);
+ /* Wait for reset to complete. */
+ max_wait_time = 3;
+ QPRINTK(qdev, IFDOWN, DEBUG, "Wait %d seconds for reset to complete.\n",
+ max_wait_time);
+ do {
+ value = ql_read32(qdev, RST_FO);
+ if ((value & RST_FO_FR) == 0)
+ break;
+
+ ssleep(1);
+ } while ((--max_wait_time));
+ if (value & RST_FO_FR) {
+ QPRINTK(qdev, IFDOWN, ERR,
+ "Stuck in SoftReset: FSC_SR:0x%08x\n", value);
+ if (resetCnt < MAX_RESET_CNT)
+ goto issueReset;
+ }
+ if (max_wait_time == 0) {
+ status = -ETIMEDOUT;
+ QPRINTK(qdev, IFDOWN, ERR,
+ "ETIMEOUT!!! errored out of resetting the chip!\n");
+ }
+
+ return status;
+}
+
+static void ql_display_dev_info(struct net_device *ndev)
+{
+ struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
+
+ QPRINTK(qdev, PROBE, INFO,
+ "Function #%d, NIC Roll %d, NIC Rev = %d, "
+ "XG Roll = %d, XG Rev = %d.\n",
+ qdev->func,
+ qdev->chip_rev_id & 0x0000000f,
+ qdev->chip_rev_id >> 4 & 0x0000000f,
+ qdev->chip_rev_id >> 8 & 0x0000000f,
+ qdev->chip_rev_id >> 12 & 0x0000000f);
+ QPRINTK(qdev, PROBE, INFO,
+ "MAC address %02x:%02x:%02x:%02x:%02x:%02x\n",
+ ndev->dev_addr[0], ndev->dev_addr[1],
+ ndev->dev_addr[2], ndev->dev_addr[3], ndev->dev_addr[4],
+ ndev->dev_addr[5]);
+}
+
+static int ql_adapter_down(struct ql_adapter *qdev)
+{
+ struct net_device *ndev = qdev->ndev;
+ int i, status = 0;
+ struct rx_ring *rx_ring;
+
+ netif_stop_queue(ndev);
+ netif_carrier_off(ndev);
+
+ cancel_delayed_work_sync(&qdev->asic_reset_work);
+ cancel_delayed_work_sync(&qdev->mpi_reset_work);
+ cancel_delayed_work_sync(&qdev->mpi_work);
+
+ /* The default queue at index 0 is always processed in
+ * a workqueue.
+ */
+ cancel_delayed_work_sync(&qdev->rx_ring[0].rx_work);
+
+ /* The rest of the rx_rings are processed in
+ * a workqueue only if it's a single interrupt
+ * environment (MSI/Legacy).
+ */
+ for (i = 1; i > qdev->rx_ring_count; i++) {
+ rx_ring = &qdev->rx_ring[i];
+ /* Only the RSS rings use NAPI on multi irq
+ * environment. Outbound completion processing
+ * is done in interrupt context.
+ */
+ if (i >= qdev->rss_ring_first_cq_id) {
+ napi_disable(&rx_ring->napi);
+ } else {
+ cancel_delayed_work_sync(&rx_ring->rx_work);
+ }
+ }
+
+ clear_bit(QL_ADAPTER_UP, &qdev->flags);
+
+ ql_disable_interrupts(qdev);
+
+ ql_tx_ring_clean(qdev);
+
+ spin_lock(&qdev->hw_lock);
+ status = ql_adapter_reset(qdev);
+ if (status)
+ QPRINTK(qdev, IFDOWN, ERR, "reset(func #%d) FAILED!\n",
+ qdev->func);
+ spin_unlock(&qdev->hw_lock);
+ return status;
+}
+
+static int ql_adapter_up(struct ql_adapter *qdev)
+{
+ int err = 0;
+
+ spin_lock(&qdev->hw_lock);
+ err = ql_adapter_initialize(qdev);
+ if (err) {
+ QPRINTK(qdev, IFUP, INFO, "Unable to initialize adapter.\n");
+ spin_unlock(&qdev->hw_lock);
+ goto err_init;
+ }
+ spin_unlock(&qdev->hw_lock);
+ set_bit(QL_ADAPTER_UP, &qdev->flags);
+ ql_enable_interrupts(qdev);
+ ql_enable_all_completion_interrupts(qdev);
+ if ((ql_read32(qdev, STS) & qdev->port_init)) {
+ netif_carrier_on(qdev->ndev);
+ netif_start_queue(qdev->ndev);
+ }
+
+ return 0;
+err_init:
+ ql_adapter_reset(qdev);
+ return err;
+}
+
+static int ql_cycle_adapter(struct ql_adapter *qdev)
+{
+ int status;
+
+ status = ql_adapter_down(qdev);
+ if (status)
+ goto error;
+
+ status = ql_adapter_up(qdev);
+ if (status)
+ goto error;
+
+ return status;
+error:
+ QPRINTK(qdev, IFUP, ALERT,
+ "Driver up/down cycle failed, closing device\n");
+ rtnl_lock();
+ dev_close(qdev->ndev);
+ rtnl_unlock();
+ return status;
+}
+
+static void ql_release_adapter_resources(struct ql_adapter *qdev)
+{
+ ql_free_mem_resources(qdev);
+ ql_free_irq(qdev);
+}
+
+static int ql_get_adapter_resources(struct ql_adapter *qdev)
+{
+ int status = 0;
+
+ if (ql_alloc_mem_resources(qdev)) {
+ QPRINTK(qdev, IFUP, ERR, "Unable to allocate memory.\n");
+ return -ENOMEM;
+ }
+ status = ql_request_irq(qdev);
+ if (status)
+ goto err_irq;
+ return status;
+err_irq:
+ ql_free_mem_resources(qdev);
+ return status;
+}
+
+static int qlge_close(struct net_device *ndev)
+{
+ struct ql_adapter *qdev = netdev_priv(ndev);
+
+ /*
+ * Wait for device to recover from a reset.
+ * (Rarely happens, but possible.)
+ */
+ while (!test_bit(QL_ADAPTER_UP, &qdev->flags))
+ msleep(1);
+ ql_adapter_down(qdev);
+ ql_release_adapter_resources(qdev);
+ ql_free_ring_cb(qdev);
+ return 0;
+}
+
+static int ql_configure_rings(struct ql_adapter *qdev)
+{
+ int i;
+ struct rx_ring *rx_ring;
+ struct tx_ring *tx_ring;
+ int cpu_cnt = num_online_cpus();
+
+ /*
+ * For each processor present we allocate one
+ * rx_ring for outbound completions, and one
+ * rx_ring for inbound completions. Plus there is
+ * always the one default queue. For the CPU
+ * counts we end up with the following rx_rings:
+ * rx_ring count =
+ * one default queue +
+ * (CPU count * outbound completion rx_ring) +
+ * (CPU count * inbound (RSS) completion rx_ring)
+ * To keep it simple we limit the total number of
+ * queues to < 32, so we truncate CPU to 8.
+ * This limitation can be removed when requested.
+ */
+
+ if (cpu_cnt > 8)
+ cpu_cnt = 8;
+
+ /*
+ * rx_ring[0] is always the default queue.
+ */
+ /* Allocate outbound completion ring for each CPU. */
+ qdev->tx_ring_count = cpu_cnt;
+ /* Allocate inbound completion (RSS) ring for each CPU. */
+ qdev->rss_ring_count = cpu_cnt;
+ /* cq_id for the first inbound ring handler. */
+ qdev->rss_ring_first_cq_id = cpu_cnt + 1;
+ /*
+ * qdev->rx_ring_count:
+ * Total number of rx_rings. This includes the one
+ * default queue, a number of outbound completion
+ * handler rx_rings, and the number of inbound
+ * completion handler rx_rings.
+ */
+ qdev->rx_ring_count = qdev->tx_ring_count + qdev->rss_ring_count + 1;
+
+ if (ql_alloc_ring_cb(qdev))
+ return -ENOMEM;
+
+ for (i = 0; i < qdev->tx_ring_count; i++) {
+ tx_ring = &qdev->tx_ring[i];
+ memset((void *)tx_ring, 0, sizeof(tx_ring));
+ tx_ring->qdev = qdev;
+ tx_ring->wq_id = i;
+ tx_ring->wq_len = qdev->tx_ring_size;
+ tx_ring->wq_size =
+ tx_ring->wq_len * sizeof(struct ob_mac_iocb_req);
+
+ /*
+ * The completion queue ID for the tx rings start
+ * immediately after the default Q ID, which is zero.
+ */
+ tx_ring->cq_id = i + 1;
+ }
+
+ for (i = 0; i < qdev->rx_ring_count; i++) {
+ rx_ring = &qdev->rx_ring[i];
+ memset((void *)rx_ring, 0, sizeof(rx_ring));
+ rx_ring->qdev = qdev;
+ rx_ring->cq_id = i;
+ rx_ring->cpu = i % cpu_cnt; /* CPU to run handler on. */
+ if (i == 0) { /* Default queue at index 0. */
+ /*
+ * Default queue handles bcast/mcast plus
+ * async events. Needs buffers.
+ */
+ rx_ring->cq_len = qdev->rx_ring_size;
+ rx_ring->cq_size =
+ rx_ring->cq_len * sizeof(struct ql_net_rsp_iocb);
+ rx_ring->lbq_len = NUM_LARGE_BUFFERS;
+ rx_ring->lbq_size =
+ rx_ring->lbq_len * sizeof(struct bq_element);
+ rx_ring->lbq_buf_size = LARGE_BUFFER_SIZE;
+ rx_ring->sbq_len = NUM_SMALL_BUFFERS;
+ rx_ring->sbq_size =
+ rx_ring->sbq_len * sizeof(struct bq_element);
+ rx_ring->sbq_buf_size = SMALL_BUFFER_SIZE * 2;
+ rx_ring->type = DEFAULT_Q;
+ } else if (i < qdev->rss_ring_first_cq_id) {
+ /*
+ * Outbound queue handles outbound completions only.
+ */
+ /* outbound cq is same size as tx_ring it services. */
+ rx_ring->cq_len = qdev->tx_ring_size;
+ rx_ring->cq_size =
+ rx_ring->cq_len * sizeof(struct ql_net_rsp_iocb);
+ rx_ring->lbq_len = 0;
+ rx_ring->lbq_size = 0;
+ rx_ring->lbq_buf_size = 0;
+ rx_ring->sbq_len = 0;
+ rx_ring->sbq_size = 0;
+ rx_ring->sbq_buf_size = 0;
+ rx_ring->type = TX_Q;
+ } else { /* Inbound completions (RSS) queues */
+ /*
+ * Inbound queues handle unicast frames only.
+ */
+ rx_ring->cq_len = qdev->rx_ring_size;
+ rx_ring->cq_size =
+ rx_ring->cq_len * sizeof(struct ql_net_rsp_iocb);
+ rx_ring->lbq_len = NUM_LARGE_BUFFERS;
+ rx_ring->lbq_size =
+ rx_ring->lbq_len * sizeof(struct bq_element);
+ rx_ring->lbq_buf_size = LARGE_BUFFER_SIZE;
+ rx_ring->sbq_len = NUM_SMALL_BUFFERS;
+ rx_ring->sbq_size =
+ rx_ring->sbq_len * sizeof(struct bq_element);
+ rx_ring->sbq_buf_size = SMALL_BUFFER_SIZE * 2;
+ rx_ring->type = RX_Q;
+ }
+ }
+ return 0;
+}
+
+static int qlge_open(struct net_device *ndev)
+{
+ int err = 0;
+ struct ql_adapter *qdev = netdev_priv(ndev);
+
+ err = ql_configure_rings(qdev);
+ if (err)
+ return err;
+
+ err = ql_get_adapter_resources(qdev);
+ if (err)
+ goto error_up;
+
+ err = ql_adapter_up(qdev);
+ if (err)
+ goto error_up;
+
+ return err;
+
+error_up:
+ ql_release_adapter_resources(qdev);
+ ql_free_ring_cb(qdev);
+ return err;
+}
+
+static int qlge_change_mtu(struct net_device *ndev, int new_mtu)
+{
+ struct ql_adapter *qdev = netdev_priv(ndev);
+
+ if (ndev->mtu == 1500 && new_mtu == 9000) {
+ QPRINTK(qdev, IFUP, ERR, "Changing to jumbo MTU.\n");
+ } else if (ndev->mtu == 9000 && new_mtu == 1500) {
+ QPRINTK(qdev, IFUP, ERR, "Changing to normal MTU.\n");
+ } else if ((ndev->mtu == 1500 && new_mtu == 1500) ||
+ (ndev->mtu == 9000 && new_mtu == 9000)) {
+ return 0;
+ } else
+ return -EINVAL;
+ ndev->mtu = new_mtu;
+ return 0;
+}
+
+static struct net_device_stats *qlge_get_stats(struct net_device
+ *ndev)
+{
+ struct ql_adapter *qdev = netdev_priv(ndev);
+ return &qdev->stats;
+}
+
+static void qlge_set_multicast_list(struct net_device *ndev)
+{
+ struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
+ struct dev_mc_list *mc_ptr;
+ int i;
+
+ spin_lock(&qdev->hw_lock);
+ /*
+ * Set or clear promiscuous mode if a
+ * transition is taking place.
+ */
+ if (ndev->flags & IFF_PROMISC) {
+ if (!test_bit(QL_PROMISCUOUS, &qdev->flags)) {
+ if (ql_set_routing_reg
+ (qdev, RT_IDX_PROMISCUOUS_SLOT, RT_IDX_VALID, 1)) {
+ QPRINTK(qdev, HW, ERR,
+ "Failed to set promiscous mode.\n");
+ } else {
+ set_bit(QL_PROMISCUOUS, &qdev->flags);
+ }
+ }
+ } else {
+ if (test_bit(QL_PROMISCUOUS, &qdev->flags)) {
+ if (ql_set_routing_reg
+ (qdev, RT_IDX_PROMISCUOUS_SLOT, RT_IDX_VALID, 0)) {
+ QPRINTK(qdev, HW, ERR,
+ "Failed to clear promiscous mode.\n");
+ } else {
+ clear_bit(QL_PROMISCUOUS, &qdev->flags);
+ }
+ }
+ }
+
+ /*
+ * Set or clear all multicast mode if a
+ * transition is taking place.
+ */
+ if ((ndev->flags & IFF_ALLMULTI) ||
+ (ndev->mc_count > MAX_MULTICAST_ENTRIES)) {
+ if (!test_bit(QL_ALLMULTI, &qdev->flags)) {
+ if (ql_set_routing_reg
+ (qdev, RT_IDX_ALLMULTI_SLOT, RT_IDX_MCAST, 1)) {
+ QPRINTK(qdev, HW, ERR,
+ "Failed to set all-multi mode.\n");
+ } else {
+ set_bit(QL_ALLMULTI, &qdev->flags);
+ }
+ }
+ } else {
+ if (test_bit(QL_ALLMULTI, &qdev->flags)) {
+ if (ql_set_routing_reg
+ (qdev, RT_IDX_ALLMULTI_SLOT, RT_IDX_MCAST, 0)) {
+ QPRINTK(qdev, HW, ERR,
+ "Failed to clear all-multi mode.\n");
+ } else {
+ clear_bit(QL_ALLMULTI, &qdev->flags);
+ }
+ }
+ }
+
+ if (ndev->mc_count) {
+ for (i = 0, mc_ptr = ndev->mc_list; mc_ptr;
+ i++, mc_ptr = mc_ptr->next)
+ if (ql_set_mac_addr_reg(qdev, (u8 *) mc_ptr->dmi_addr,
+ MAC_ADDR_TYPE_MULTI_MAC, i)) {
+ QPRINTK(qdev, HW, ERR,
+ "Failed to loadmulticast address.\n");
+ goto exit;
+ }
+ if (ql_set_routing_reg
+ (qdev, RT_IDX_MCAST_MATCH_SLOT, RT_IDX_MCAST_MATCH, 1)) {
+ QPRINTK(qdev, HW, ERR,
+ "Failed to set multicast match mode.\n");
+ } else {
+ set_bit(QL_ALLMULTI, &qdev->flags);
+ }
+ }
+exit:
+ spin_unlock(&qdev->hw_lock);
+}
+
+static int qlge_set_mac_address(struct net_device *ndev, void *p)
+{
+ struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
+ struct sockaddr *addr = p;
+
+ if (netif_running(ndev))
+ return -EBUSY;
+
+ if (!is_valid_ether_addr(addr->sa_data))
+ return -EADDRNOTAVAIL;
+ memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len);
+
+ spin_lock(&qdev->hw_lock);
+ if (ql_set_mac_addr_reg(qdev, (u8 *) ndev->dev_addr,
+ MAC_ADDR_TYPE_CAM_MAC, qdev->func)) {/* Unicast */
+ QPRINTK(qdev, HW, ERR, "Failed to load MAC address.\n");
+ return -1;
+ }
+ spin_unlock(&qdev->hw_lock);
+
+ return 0;
+}
+
+static void qlge_tx_timeout(struct net_device *ndev)
+{
+ struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
+ queue_delayed_work(qdev->workqueue, &qdev->asic_reset_work, 0);
+}
+
+static void ql_asic_reset_work(struct work_struct *work)
+{
+ struct ql_adapter *qdev =
+ container_of(work, struct ql_adapter, asic_reset_work.work);
+ ql_cycle_adapter(qdev);
+}
+
+static void ql_get_board_info(struct ql_adapter *qdev)
+{
+ qdev->func =
+ (ql_read32(qdev, STS) & STS_FUNC_ID_MASK) >> STS_FUNC_ID_SHIFT;
+ if (qdev->func) {
+ qdev->xg_sem_mask = SEM_XGMAC1_MASK;
+ qdev->port_link_up = STS_PL1;
+ qdev->port_init = STS_PI1;
+ qdev->mailbox_in = PROC_ADDR_MPI_RISC | PROC_ADDR_FUNC2_MBI;
+ qdev->mailbox_out = PROC_ADDR_MPI_RISC | PROC_ADDR_FUNC2_MBO;
+ } else {
+ qdev->xg_sem_mask = SEM_XGMAC0_MASK;
+ qdev->port_link_up = STS_PL0;
+ qdev->port_init = STS_PI0;
+ qdev->mailbox_in = PROC_ADDR_MPI_RISC | PROC_ADDR_FUNC0_MBI;
+ qdev->mailbox_out = PROC_ADDR_MPI_RISC | PROC_ADDR_FUNC0_MBO;
+ }
+ qdev->chip_rev_id = ql_read32(qdev, REV_ID);
+}
+
+static void ql_release_all(struct pci_dev *pdev)
+{
+ struct net_device *ndev = pci_get_drvdata(pdev);
+ struct ql_adapter *qdev = netdev_priv(ndev);
+
+ if (qdev->workqueue) {
+ destroy_workqueue(qdev->workqueue);
+ qdev->workqueue = NULL;
+ }
+ if (qdev->q_workqueue) {
+ destroy_workqueue(qdev->q_workqueue);
+ qdev->q_workqueue = NULL;
+ }
+ if (qdev->reg_base)
+ iounmap((void *)qdev->reg_base);
+ if (qdev->doorbell_area)
+ iounmap(qdev->doorbell_area);
+ pci_release_regions(pdev);
+ pci_set_drvdata(pdev, NULL);
+}
+
+static int __devinit ql_init_device(struct pci_dev *pdev,
+ struct net_device *ndev, int cards_found)
+{
+ struct ql_adapter *qdev = netdev_priv(ndev);
+ int pos, err = 0;
+ u16 val16;
+
+ memset((void *)qdev, 0, sizeof(qdev));
+ err = pci_enable_device(pdev);
+ if (err) {
+ dev_err(&pdev->dev, "PCI device enable failed.\n");
+ return err;
+ }
+
+ pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+ if (pos <= 0) {
+ dev_err(&pdev->dev, PFX "Cannot find PCI Express capability, "
+ "aborting.\n");
+ goto err_out;
+ } else {
+ pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
+ val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
+ val16 |= (PCI_EXP_DEVCTL_CERE |
+ PCI_EXP_DEVCTL_NFERE |
+ PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE);
+ pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
+ }
+
+ err = pci_request_regions(pdev, DRV_NAME);
+ if (err) {
+ dev_err(&pdev->dev, "PCI region request failed.\n");
+ goto err_out;
+ }
+
+ pci_set_master(pdev);
+ if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
+ set_bit(QL_DMA64, &qdev->flags);
+ err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
+ } else {
+ err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
+ if (!err)
+ err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
+ }
+
+ if (err) {
+ dev_err(&pdev->dev, "No usable DMA configuration.\n");
+ goto err_out;
+ }
+
+ pci_set_drvdata(pdev, ndev);
+ qdev->reg_base =
+ ioremap_nocache(pci_resource_start(pdev, 1),
+ pci_resource_len(pdev, 1));
+ if (!qdev->reg_base) {
+ dev_err(&pdev->dev, "Register mapping failed.\n");
+ err = -ENOMEM;
+ goto err_out;
+ }
+
+ qdev->doorbell_area_size = pci_resource_len(pdev, 3);
+ qdev->doorbell_area =
+ ioremap_nocache(pci_resource_start(pdev, 3),
+ pci_resource_len(pdev, 3));
+ if (!qdev->doorbell_area) {
+ dev_err(&pdev->dev, "Doorbell register mapping failed.\n");
+ err = -ENOMEM;
+ goto err_out;
+ }
+
+ ql_get_board_info(qdev);
+ qdev->ndev = ndev;
+ qdev->pdev = pdev;
+ qdev->msg_enable = netif_msg_init(debug, default_msg);
+ spin_lock_init(&qdev->hw_lock);
+ spin_lock_init(&qdev->stats_lock);
+
+ /* make sure the EEPROM is good */
+ err = ql_get_flash_params(qdev);
+ if (err) {
+ dev_err(&pdev->dev, "Invalid FLASH.\n");
+ goto err_out;
+ }
+
+ if (!is_valid_ether_addr(qdev->flash.mac_addr))
+ goto err_out;
+
+ memcpy(ndev->dev_addr, qdev->flash.mac_addr, ndev->addr_len);
+ memcpy(ndev->perm_addr, ndev->dev_addr, ndev->addr_len);
+
+ /* Set up the default ring sizes. */
+ qdev->tx_ring_size = NUM_TX_RING_ENTRIES;
+ qdev->rx_ring_size = NUM_RX_RING_ENTRIES;
+
+ /* Set up the coalescing parameters. */
+ qdev->rx_coalesce_usecs = DFLT_COALESCE_WAIT;
+ qdev->tx_coalesce_usecs = DFLT_COALESCE_WAIT;
+ qdev->rx_max_coalesced_frames = DFLT_INTER_FRAME_WAIT;
+ qdev->tx_max_coalesced_frames = DFLT_INTER_FRAME_WAIT;
+
+ /*
+ * Set up the operating parameters.
+ */
+ qdev->rx_csum = 1;
+
+ qdev->q_workqueue = create_workqueue(ndev->name);
+ qdev->workqueue = create_singlethread_workqueue(ndev->name);
+ INIT_DELAYED_WORK(&qdev->asic_reset_work, ql_asic_reset_work);
+ INIT_DELAYED_WORK(&qdev->mpi_reset_work, ql_mpi_reset_work);
+ INIT_DELAYED_WORK(&qdev->mpi_work, ql_mpi_work);
+
+ if (!cards_found) {
+ dev_info(&pdev->dev, "%s\n", DRV_STRING);
+ dev_info(&pdev->dev, "Driver name: %s, Version: %s.\n",
+ DRV_NAME, DRV_VERSION);
+ }
+ return 0;
+err_out:
+ ql_release_all(pdev);
+ pci_disable_device(pdev);
+ return err;
+}
+
+static int __devinit qlge_probe(struct pci_dev *pdev,
+ const struct pci_device_id *pci_entry)
+{
+ struct net_device *ndev = NULL;
+ struct ql_adapter *qdev = NULL;
+ static int cards_found = 0;
+ int err = 0;
+
+ ndev = alloc_etherdev(sizeof(struct ql_adapter));
+ if (!ndev)
+ return -ENOMEM;
+
+ err = ql_init_device(pdev, ndev, cards_found);
+ if (err < 0) {
+ free_netdev(ndev);
+ return err;
+ }
+
+ qdev = netdev_priv(ndev);
+ SET_NETDEV_DEV(ndev, &pdev->dev);
+ ndev->features = (0
+ | NETIF_F_IP_CSUM
+ | NETIF_F_SG
+ | NETIF_F_TSO
+ | NETIF_F_TSO6
+ | NETIF_F_TSO_ECN
+ | NETIF_F_HW_VLAN_TX
+ | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER);
+
+ if (test_bit(QL_DMA64, &qdev->flags))
+ ndev->features |= NETIF_F_HIGHDMA;
+
+ /*
+ * Set up net_device structure.
+ */
+ ndev->tx_queue_len = qdev->tx_ring_size;
+ ndev->irq = pdev->irq;
+ ndev->open = qlge_open;
+ ndev->stop = qlge_close;
+ ndev->hard_start_xmit = qlge_send;
+ SET_ETHTOOL_OPS(ndev, &qlge_ethtool_ops);
+ ndev->change_mtu = qlge_change_mtu;
+ ndev->get_stats = qlge_get_stats;
+ ndev->set_multicast_list = qlge_set_multicast_list;
+ ndev->set_mac_address = qlge_set_mac_address;
+ ndev->tx_timeout = qlge_tx_timeout;
+ ndev->watchdog_timeo = 10 * HZ;
+ ndev->vlan_rx_register = ql_vlan_rx_register;
+ ndev->vlan_rx_add_vid = ql_vlan_rx_add_vid;
+ ndev->vlan_rx_kill_vid = ql_vlan_rx_kill_vid;
+ err = register_netdev(ndev);
+ if (err) {
+ dev_err(&pdev->dev, "net device registration failed.\n");
+ ql_release_all(pdev);
+ pci_disable_device(pdev);
+ return err;
+ }
+ netif_carrier_off(ndev);
+ netif_stop_queue(ndev);
+ ql_display_dev_info(ndev);
+ cards_found++;
+ return 0;
+}
+
+static void __devexit qlge_remove(struct pci_dev *pdev)
+{
+ struct net_device *ndev = pci_get_drvdata(pdev);
+ unregister_netdev(ndev);
+ ql_release_all(pdev);
+ pci_disable_device(pdev);
+ free_netdev(ndev);
+}
+
+/*
+ * This callback is called by the PCI subsystem whenever
+ * a PCI bus error is detected.
+ */
+static pci_ers_result_t qlge_io_error_detected(struct pci_dev *pdev,
+ enum pci_channel_state state)
+{
+ struct net_device *ndev = pci_get_drvdata(pdev);
+ struct ql_adapter *qdev = netdev_priv(ndev);
+
+ if (netif_running(ndev))
+ ql_adapter_down(qdev);
+
+ pci_disable_device(pdev);
+
+ /* Request a slot reset. */
+ return PCI_ERS_RESULT_NEED_RESET;
+}
+
+/*
+ * This callback is called after the PCI buss has been reset.
+ * Basically, this tries to restart the card from scratch.
+ * This is a shortened version of the device probe/discovery code,
+ * it resembles the first-half of the () routine.
+ */
+static pci_ers_result_t qlge_io_slot_reset(struct pci_dev *pdev)
+{
+ struct net_device *ndev = pci_get_drvdata(pdev);
+ struct ql_adapter *qdev = netdev_priv(ndev);
+
+ if (pci_enable_device(pdev)) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Cannot re-enable PCI device after reset.\n");
+ return PCI_ERS_RESULT_DISCONNECT;
+ }
+
+ pci_set_master(pdev);
+
+ netif_carrier_off(ndev);
+ netif_stop_queue(ndev);
+ ql_adapter_reset(qdev);
+
+ /* Make sure the EEPROM is good */
+ memcpy(ndev->perm_addr, ndev->dev_addr, ndev->addr_len);
+
+ if (!is_valid_ether_addr(ndev->perm_addr)) {
+ QPRINTK(qdev, IFUP, ERR, "After reset, invalid MAC address.\n");
+ return PCI_ERS_RESULT_DISCONNECT;
+ }
+
+ return PCI_ERS_RESULT_RECOVERED;
+}
+
+static void qlge_io_resume(struct pci_dev *pdev)
+{
+ struct net_device *ndev = pci_get_drvdata(pdev);
+ struct ql_adapter *qdev = netdev_priv(ndev);
+
+ pci_set_master(pdev);
+
+ if (netif_running(ndev)) {
+ if (ql_adapter_up(qdev)) {
+ QPRINTK(qdev, IFUP, ERR,
+ "Device initialization failed after reset.\n");
+ return;
+ }
+ }
+
+ netif_device_attach(ndev);
+}
+
+static struct pci_error_handlers qlge_err_handler = {
+ .error_detected = qlge_io_error_detected,
+ .slot_reset = qlge_io_slot_reset,
+ .resume = qlge_io_resume,
+};
+
+static int qlge_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct net_device *ndev = pci_get_drvdata(pdev);
+ struct ql_adapter *qdev = netdev_priv(ndev);
+ int err;
+
+ netif_device_detach(ndev);
+
+ if (netif_running(ndev)) {
+ err = ql_adapter_down(qdev);
+ if (!err)
+ return err;
+ }
+
+ err = pci_save_state(pdev);
+ if (err)
+ return err;
+
+ pci_disable_device(pdev);
+
+ pci_set_power_state(pdev, pci_choose_state(pdev, state));
+
+ return 0;
+}
+
+static int qlge_resume(struct pci_dev *pdev)
+{
+ struct net_device *ndev = pci_get_drvdata(pdev);
+ struct ql_adapter *qdev = netdev_priv(ndev);
+ int err;
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+ err = pci_enable_device(pdev);
+ if (err) {
+ QPRINTK(qdev, IFUP, ERR, "Cannot enable PCI device from suspend\n");
+ return err;
+ }
+ pci_set_master(pdev);
+
+ pci_enable_wake(pdev, PCI_D3hot, 0);
+ pci_enable_wake(pdev, PCI_D3cold, 0);
+
+ if (netif_running(ndev)) {
+ err = ql_adapter_up(qdev);
+ if (err)
+ return err;
+ }
+
+ netif_device_attach(ndev);
+
+ return 0;
+}
+
+static void qlge_shutdown(struct pci_dev *pdev)
+{
+ qlge_suspend(pdev, PMSG_SUSPEND);
+}
+
+static struct pci_driver qlge_driver = {
+ .name = DRV_NAME,
+ .id_table = qlge_pci_tbl,
+ .probe = qlge_probe,
+ .remove = __devexit_p(qlge_remove),
+#ifdef CONFIG_PM
+ .suspend = qlge_suspend,
+ .resume = qlge_resume,
+#endif
+ .shutdown = qlge_shutdown,
+ .err_handler = &qlge_err_handler
+};
+
+static int __init qlge_init_module(void)
+{
+ return pci_register_driver(&qlge_driver);
+}
+
+static void __exit qlge_exit(void)
+{
+ pci_unregister_driver(&qlge_driver);
+}
+
+module_init(qlge_init_module);
+module_exit(qlge_exit);
--
1.5.0.rc4.16.g9e258
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