| /* |
| * 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@qlogic.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/delay.h> |
| #include <linux/mm.h> |
| #include <linux/vmalloc.h> |
| #include <net/ip6_checksum.h> |
| |
| #include "qlge.h" |
| |
| char qlge_driver_name[] = DRV_NAME; |
| const char qlge_driver_version[] = DRV_VERSION; |
| |
| MODULE_AUTHOR("Ron Mercer <ron.mercer@qlogic.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_8012)}, |
| {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, QLGE_DEVICE_ID_8000)}, |
| /* 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 wait_count = 30; |
| do { |
| if (!ql_sem_trylock(qdev, sem_mask)) |
| return 0; |
| udelay(100); |
| } while (--wait_count); |
| 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(qdev->pdev, 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; |
| |
| 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, 0); |
| 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, 0); |
| if (status) |
| goto exit; |
| *value++ = ql_read32(qdev, MAC_ADDR_DATA); |
| status = |
| ql_wait_reg_rdy(qdev, |
| MAC_ADDR_IDX, MAC_ADDR_MW, 0); |
| 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, 0); |
| 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, 0); |
| 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, 0); |
| 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: |
| 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; |
| |
| 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, DEBUG, |
| "Adding %s address %pM" |
| " at index %d in the CAM.\n", |
| ((type == |
| MAC_ADDR_TYPE_MULTI_MAC) ? "MULTICAST" : |
| "UNICAST"), addr, index); |
| |
| status = |
| ql_wait_reg_rdy(qdev, |
| MAC_ADDR_IDX, MAC_ADDR_MW, 0); |
| 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, 0); |
| 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, 0); |
| 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, 0); |
| 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: |
| 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_wait_reg_rdy(qdev, RT_IDX, RT_IDX_MW, 0); |
| 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, 0); |
| if (status) |
| goto exit; |
| *value = ql_read32(qdev, RT_DATA); |
| exit: |
| 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 = -EINVAL; /* Return error if no mask match. */ |
| u32 value = 0; |
| |
| 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: |
| 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. |
| */ |
| u32 ql_enable_completion_interrupt(struct ql_adapter *qdev, u32 intr) |
| { |
| u32 var = 0; |
| unsigned long hw_flags = 0; |
| struct intr_context *ctx = qdev->intr_context + intr; |
| |
| if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags) && intr)) { |
| /* Always enable if we're MSIX multi interrupts and |
| * it's not the default (zeroeth) interrupt. |
| */ |
| ql_write32(qdev, INTR_EN, |
| ctx->intr_en_mask); |
| var = ql_read32(qdev, STS); |
| return var; |
| } |
| |
| spin_lock_irqsave(&qdev->hw_lock, hw_flags); |
| if (atomic_dec_and_test(&ctx->irq_cnt)) { |
| ql_write32(qdev, INTR_EN, |
| ctx->intr_en_mask); |
| var = ql_read32(qdev, STS); |
| } |
| spin_unlock_irqrestore(&qdev->hw_lock, hw_flags); |
| return var; |
| } |
| |
| static u32 ql_disable_completion_interrupt(struct ql_adapter *qdev, u32 intr) |
| { |
| u32 var = 0; |
| struct intr_context *ctx; |
| |
| /* HW disables for us if we're MSIX multi interrupts and |
| * it's not the default (zeroeth) interrupt. |
| */ |
| if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags) && intr)) |
| return 0; |
| |
| ctx = qdev->intr_context + intr; |
| spin_lock(&qdev->hw_lock); |
| if (!atomic_read(&ctx->irq_cnt)) { |
| ql_write32(qdev, INTR_EN, |
| ctx->intr_dis_mask); |
| var = ql_read32(qdev, STS); |
| } |
| atomic_inc(&ctx->irq_cnt); |
| spin_unlock(&qdev->hw_lock); |
| 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. |
| */ |
| if (unlikely(!test_bit(QL_MSIX_ENABLED, &qdev->flags) || |
| i == 0)) |
| atomic_set(&qdev->intr_context[i].irq_cnt, 1); |
| ql_enable_completion_interrupt(qdev, i); |
| } |
| |
| } |
| |
| static int ql_validate_flash(struct ql_adapter *qdev, u32 size, const char *str) |
| { |
| int status, i; |
| u16 csum = 0; |
| __le16 *flash = (__le16 *)&qdev->flash; |
| |
| status = strncmp((char *)&qdev->flash, str, 4); |
| if (status) { |
| QPRINTK(qdev, IFUP, ERR, "Invalid flash signature.\n"); |
| return status; |
| } |
| |
| for (i = 0; i < size; i++) |
| csum += le16_to_cpu(*flash++); |
| |
| if (csum) |
| QPRINTK(qdev, IFUP, ERR, |
| "Invalid flash checksum, csum = 0x%.04x.\n", csum); |
| |
| return csum; |
| } |
| |
| static int ql_read_flash_word(struct ql_adapter *qdev, int offset, __le32 *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; |
| /* This data is stored on flash as an array of |
| * __le32. Since ql_read32() returns cpu endian |
| * we need to swap it back. |
| */ |
| *data = cpu_to_le32(ql_read32(qdev, FLASH_DATA)); |
| exit: |
| return status; |
| } |
| |
| static int ql_get_8000_flash_params(struct ql_adapter *qdev) |
| { |
| u32 i, size; |
| int status; |
| __le32 *p = (__le32 *)&qdev->flash; |
| u32 offset; |
| u8 mac_addr[6]; |
| |
| /* Get flash offset for function and adjust |
| * for dword access. |
| */ |
| if (!qdev->port) |
| offset = FUNC0_FLASH_OFFSET / sizeof(u32); |
| else |
| offset = FUNC1_FLASH_OFFSET / sizeof(u32); |
| |
| if (ql_sem_spinlock(qdev, SEM_FLASH_MASK)) |
| return -ETIMEDOUT; |
| |
| size = sizeof(struct flash_params_8000) / sizeof(u32); |
| for (i = 0; i < size; i++, p++) { |
| status = ql_read_flash_word(qdev, i+offset, p); |
| if (status) { |
| QPRINTK(qdev, IFUP, ERR, "Error reading flash.\n"); |
| goto exit; |
| } |
| } |
| |
| status = ql_validate_flash(qdev, |
| sizeof(struct flash_params_8000) / sizeof(u16), |
| "8000"); |
| if (status) { |
| QPRINTK(qdev, IFUP, ERR, "Invalid flash.\n"); |
| status = -EINVAL; |
| goto exit; |
| } |
| |
| /* Extract either manufacturer or BOFM modified |
| * MAC address. |
| */ |
| if (qdev->flash.flash_params_8000.data_type1 == 2) |
| memcpy(mac_addr, |
| qdev->flash.flash_params_8000.mac_addr1, |
| qdev->ndev->addr_len); |
| else |
| memcpy(mac_addr, |
| qdev->flash.flash_params_8000.mac_addr, |
| qdev->ndev->addr_len); |
| |
| if (!is_valid_ether_addr(mac_addr)) { |
| QPRINTK(qdev, IFUP, ERR, "Invalid MAC address.\n"); |
| status = -EINVAL; |
| goto exit; |
| } |
| |
| memcpy(qdev->ndev->dev_addr, |
| mac_addr, |
| qdev->ndev->addr_len); |
| |
| exit: |
| ql_sem_unlock(qdev, SEM_FLASH_MASK); |
| return status; |
| } |
| |
| static int ql_get_8012_flash_params(struct ql_adapter *qdev) |
| { |
| int i; |
| int status; |
| __le32 *p = (__le32 *)&qdev->flash; |
| u32 offset = 0; |
| u32 size = sizeof(struct flash_params_8012) / sizeof(u32); |
| |
| /* Second function's parameters follow the first |
| * function's. |
| */ |
| if (qdev->port) |
| offset = size; |
| |
| if (ql_sem_spinlock(qdev, SEM_FLASH_MASK)) |
| return -ETIMEDOUT; |
| |
| for (i = 0; i < size; i++, p++) { |
| status = ql_read_flash_word(qdev, i+offset, p); |
| if (status) { |
| QPRINTK(qdev, IFUP, ERR, "Error reading flash.\n"); |
| goto exit; |
| } |
| |
| } |
| |
| status = ql_validate_flash(qdev, |
| sizeof(struct flash_params_8012) / sizeof(u16), |
| "8012"); |
| if (status) { |
| QPRINTK(qdev, IFUP, ERR, "Invalid flash.\n"); |
| status = -EINVAL; |
| goto exit; |
| } |
| |
| if (!is_valid_ether_addr(qdev->flash.flash_params_8012.mac_addr)) { |
| status = -EINVAL; |
| goto exit; |
| } |
| |
| memcpy(qdev->ndev->dev_addr, |
| qdev->flash.flash_params_8012.mac_addr, |
| qdev->ndev->addr_len); |
| |
| 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; |
| } |
| |
| static int ql_8000_port_initialize(struct ql_adapter *qdev) |
| { |
| int status; |
| /* |
| * Get MPI firmware version for driver banner |
| * and ethool info. |
| */ |
| status = ql_mb_about_fw(qdev); |
| if (status) |
| goto exit; |
| status = ql_mb_get_fw_state(qdev); |
| if (status) |
| goto exit; |
| /* Wake up a worker to get/set the TX/RX frame sizes. */ |
| queue_delayed_work(qdev->workqueue, &qdev->mpi_port_cfg_work, 0); |
| 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_8012_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. */ |
| static 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. */ |
| static 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) |
| { |
| u32 clean_idx = rx_ring->lbq_clean_idx; |
| u32 start_idx = clean_idx; |
| struct bq_desc *lbq_desc; |
| 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]; |
| 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) { |
| rx_ring->lbq_clean_idx = clean_idx; |
| 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(qdev->pdev, map)) { |
| rx_ring->lbq_clean_idx = clean_idx; |
| put_page(lbq_desc->p.lbq_page); |
| lbq_desc->p.lbq_page = NULL; |
| 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); |
| *lbq_desc->addr = cpu_to_le64(map); |
| } |
| 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; |
| rx_ring->lbq_free_cnt -= 16; |
| } |
| |
| if (start_idx != clean_idx) { |
| 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); |
| } |
| } |
| |
| /* Process (refill) a small buffer queue. */ |
| static void ql_update_sbq(struct ql_adapter *qdev, struct rx_ring *rx_ring) |
| { |
| u32 clean_idx = rx_ring->sbq_clean_idx; |
| u32 start_idx = clean_idx; |
| struct bq_desc *sbq_desc; |
| 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); |
| 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); |
| if (pci_dma_mapping_error(qdev->pdev, map)) { |
| QPRINTK(qdev, IFUP, ERR, "PCI mapping failed.\n"); |
| rx_ring->sbq_clean_idx = clean_idx; |
| dev_kfree_skb_any(sbq_desc->p.skb); |
| sbq_desc->p.skb = NULL; |
| return; |
| } |
| pci_unmap_addr_set(sbq_desc, mapaddr, map); |
| pci_unmap_len_set(sbq_desc, maplen, |
| rx_ring->sbq_buf_size / 2); |
| *sbq_desc->addr = cpu_to_le64(map); |
| } |
| |
| 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; |
| rx_ring->sbq_free_cnt -= 16; |
| } |
| |
| if (start_idx != clean_idx) { |
| 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); |
| } |
| } |
| |
| 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(qdev->pdev, 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(qdev->pdev, 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(qdev->pdev, 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; |
| } |
| |
| static 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; |
| } |
| pci_unmap_page(qdev->pdev, |
| pci_unmap_addr(lbq_desc, |
| mapaddr), |
| pci_unmap_len(lbq_desc, maplen), |
| PCI_DMA_FROMDEVICE); |
| 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; |
| __le64 *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 = (__le64 *)sbq_desc->p.skb->data; |
| } |
| while (length > 0) { |
| 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); |
| 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; |
| u16 vlan_id = (le16_to_cpu(ib_mac_rsp->vlan_id) & |
| IB_MAC_IOCB_RSP_VLAN_MASK) |
| |
| 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; |
| } |
| |
| /* Frame error, so drop the packet. */ |
| if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_ERR_MASK) { |
| QPRINTK(qdev, DRV, ERR, "Receive error, flags2 = 0x%x\n", |
| ib_mac_rsp->flags2); |
| dev_kfree_skb_any(skb); |
| return; |
| } |
| |
| /* The max framesize filter on this chip is set higher than |
| * MTU since FCoE uses 2k frames. |
| */ |
| if (skb->len > ndev->mtu + ETH_HLEN) { |
| dev_kfree_skb_any(skb); |
| 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"); |
| } |
| |
| skb->protocol = eth_type_trans(skb, ndev); |
| skb->ip_summed = CHECKSUM_NONE; |
| |
| /* If rx checksum is on, and there are no |
| * csum or frame errors. |
| */ |
| if (qdev->rx_csum && |
| !(ib_mac_rsp->flags1 & IB_MAC_CSUM_ERR_MASK)) { |
| /* TCP frame. */ |
| if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_T) { |
| QPRINTK(qdev, RX_STATUS, DEBUG, |
| "TCP checksum done!\n"); |
| skb->ip_summed = CHECKSUM_UNNECESSARY; |
| } else if ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_U) && |
| (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_V4)) { |
| /* Unfragmented ipv4 UDP frame. */ |
| struct iphdr *iph = (struct iphdr *) skb->data; |
| if (!(iph->frag_off & |
| cpu_to_be16(IP_MF|IP_OFFSET))) { |
| skb->ip_summed = CHECKSUM_UNNECESSARY; |
| QPRINTK(qdev, RX_STATUS, DEBUG, |
| "TCP checksum done!\n"); |
| } |
| } |
| } |
| |
| qdev->stats.rx_packets++; |
| qdev->stats.rx_bytes += skb->len; |
| skb_record_rx_queue(skb, |
| rx_ring->cq_id - qdev->rss_ring_first_cq_id); |
| if (skb->ip_summed == CHECKSUM_UNNECESSARY) { |
| if (qdev->vlgrp && |
| (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V) && |
| (vlan_id != 0)) |
| vlan_gro_receive(&rx_ring->napi, qdev->vlgrp, |
| vlan_id, skb); |
| else |
| napi_gro_receive(&rx_ring->napi, skb); |
| } else { |
| if (qdev->vlgrp && |
| (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V) && |
| (vlan_id != 0)) |
| vlan_hwaccel_receive_skb(skb, qdev->vlgrp, vlan_id); |
| else |
| netif_receive_skb(skb); |
| } |
| } |
| |
| /* 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_carrier_off(qdev->ndev); |
| queue_delayed_work(qdev->workqueue, &qdev->mpi_reset_work, 0); |
| } |
| |
| void ql_queue_asic_error(struct ql_adapter *qdev) |
| { |
| netif_carrier_off(qdev->ndev); |
| ql_disable_interrupts(qdev); |
| /* Clear adapter up bit to signal the recovery |
| * process that it shouldn't kill the reset worker |
| * thread |
| */ |
| clear_bit(QL_ADAPTER_UP, &qdev->flags); |
| 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; |
| |
| struct tx_ring *tx_ring; |
| /* 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); |
| tx_ring = &qdev->tx_ring[net_rsp->txq_idx]; |
| if (__netif_subqueue_stopped(qdev->ndev, tx_ring->wq_id) && |
| net_rsp != NULL) { |
| 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_subqueue(qdev->ndev, tx_ring->wq_id); |
| } |
| |
| 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) { |
| napi_complete(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; |
| int status; |
| |
| status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK); |
| if (status) |
| return; |
| 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); |
| ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK); |
| } |
| |
| static void ql_vlan_rx_kill_vid(struct net_device *ndev, u16 vid) |
| { |
| struct ql_adapter *qdev = netdev_priv(ndev); |
| u32 enable_bit = 0; |
| int status; |
| |
| status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK); |
| if (status) |
| return; |
| |
| 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); |
| ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK); |
| |
| } |
| |
| /* 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; |
| napi_schedule(&rx_ring->napi); |
| return IRQ_HANDLED; |
| } |
| |
| /* 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; |
| |
| spin_lock(&qdev->hw_lock); |
| if (atomic_read(&qdev->intr_context[0].irq_cnt)) { |
| QPRINTK(qdev, INTR, DEBUG, "Shared Interrupt, Not ours!\n"); |
| spin_unlock(&qdev->hw_lock); |
| return IRQ_NONE; |
| } |
| spin_unlock(&qdev->hw_lock); |
| |
| var = ql_disable_completion_interrupt(qdev, intr_context->intr); |
| |
| /* |
| * 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 |
| napi_schedule(&rx_ring->napi); |
| work_done++; |
| } |
| } |
| } |
| ql_enable_completion_interrupt(qdev, intr_context->intr); |
| 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); |
| __sum16 *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) skb->queue_mapping; |
| |
| tx_ring = &qdev->tx_ring[tx_ring_idx]; |
| |
| if (skb_padto(skb, ETH_ZLEN)) |
| return NETDEV_TX_OK; |
| |
| 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_subqueue(ndev, tx_ring->wq_id); |
| 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)); |
| |
| 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); |
| } |
| 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; |
| } |
| 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); |
| 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; |
| } |
| memset(qdev->rx_ring_shadow_reg_area, 0, PAGE_SIZE); |
| 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; |
| } |
| memset(qdev->tx_ring_shadow_reg_area, 0, PAGE_SIZE); |
| 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 & WQ_ADDR_ALIGN) { |
| 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; |
| } |
| |
| static 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; |
| } |
| } |
| } |
| |
| static 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; |
| } |
| } |
| } |
| |
| /* Free all large and small rx buffers associated |
| * with the completion queues for this device. |
| */ |
| static void ql_free_rx_buffers(struct ql_adapter *qdev) |
| { |
| int i; |
| struct rx_ring *rx_ring; |
| |
| for (i = 0; i < qdev->rx_ring_count; i++) { |
| rx_ring = &qdev->rx_ring[i]; |
| if (rx_ring->lbq) |
| ql_free_lbq_buffers(qdev, rx_ring); |
| if (rx_ring->sbq) |
| ql_free_sbq_buffers(qdev, rx_ring); |
| } |
| } |
| |
| static void ql_alloc_rx_buffers(struct ql_adapter *qdev) |
| { |
| struct rx_ring *rx_ring; |
| int i; |
| |
| for (i = 0; i < qdev->rx_ring_count; i++) { |
| rx_ring = &qdev->rx_ring[i]; |
| if (rx_ring->type != TX_Q) |
| ql_update_buffer_queues(qdev, rx_ring); |
| } |
| } |
| |
| static void ql_init_lbq_ring(struct ql_adapter *qdev, |
| struct rx_ring *rx_ring) |
| { |
| int i; |
| struct bq_desc *lbq_desc; |
| __le64 *bq = rx_ring->lbq_base; |
| |
| memset(rx_ring->lbq, 0, rx_ring->lbq_len * sizeof(struct bq_desc)); |
| for (i = 0; i < rx_ring->lbq_len; i++) { |
| lbq_desc = &rx_ring->lbq[i]; |
| memset(lbq_desc, 0, sizeof(*lbq_desc)); |
| lbq_desc->index = i; |
| lbq_desc->addr = bq; |
| bq++; |
| } |
| } |
| |
| static void ql_init_sbq_ring(struct ql_adapter *qdev, |
| struct rx_ring *rx_ring) |
| { |
| int i; |
| struct bq_desc *sbq_desc; |
| __le64 *bq = rx_ring->sbq_base; |
| |
| memset(rx_ring->sbq, 0, rx_ring->sbq_len * sizeof(struct bq_desc)); |
| 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->addr = bq; |
| bq++; |
| } |
| } |
| |
| static void ql_free_rx_resources(struct ql_adapter *qdev, |
| struct rx_ring *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; |
| } |
| |
| ql_init_sbq_ring(qdev, rx_ring); |
| } |
| |
| 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; |
| } |
| |
| ql_init_lbq_ring(qdev, rx_ring); |
| } |
| |
| 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_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 * RX_RING_SHADOW_SPACE); |
| u64 shadow_reg_dma = qdev->rx_ring_shadow_reg_dma + |
| (rx_ring->cq_id * RX_RING_SHADOW_SPACE); |
| void __iomem *doorbell_area = |
| qdev->doorbell_area + (DB_PAGE_SIZE * (128 + rx_ring->cq_id)); |
| int err = 0; |
| u16 bq_len; |
| u64 tmp; |
| __le64 *base_indirect_ptr; |
| int page_entries; |
| |
| /* 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) * MAX_DB_PAGES_PER_BQ(rx_ring->lbq_len)); |
| shadow_reg_dma += (sizeof(u64) * MAX_DB_PAGES_PER_BQ(rx_ring->lbq_len)); |
| 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 __iomem *) 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 __iomem *) (doorbell_area + 0x18); |
| |
| /* PCI doorbell mem area + 0x1c */ |
| rx_ring->sbq_prod_idx_db_reg = (u32 __iomem *) (doorbell_area + 0x1c); |
| |
| memset((void *)cqicb, 0, sizeof(struct cqicb)); |
| cqicb->msix_vect = rx_ring->irq; |
| |
| bq_len = (rx_ring->cq_len == 65536) ? 0 : (u16) rx_ring->cq_len; |
| cqicb->len = cpu_to_le16(bq_len | LEN_V | LEN_CPP_CONT); |
| |
| cqicb->addr = cpu_to_le64(rx_ring->cq_base_dma); |
| |
| cqicb->prod_idx_addr = cpu_to_le64(rx_ring->prod_idx_sh_reg_dma); |
| |
| /* |
| * 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 */ |
| tmp = (u64)rx_ring->lbq_base_dma;; |
| base_indirect_ptr = (__le64 *) rx_ring->lbq_base_indirect; |
| page_entries = 0; |
| do { |
| *base_indirect_ptr = cpu_to_le64(tmp); |
| tmp += DB_PAGE_SIZE; |
| base_indirect_ptr++; |
| page_entries++; |
| } while (page_entries < MAX_DB_PAGES_PER_BQ(rx_ring->lbq_len)); |
| cqicb->lbq_addr = |
| cpu_to_le64(rx_ring->lbq_base_indirect_dma); |
| bq_len = (rx_ring->lbq_buf_size == 65536) ? 0 : |
| (u16) rx_ring->lbq_buf_size; |
| cqicb->lbq_buf_size = cpu_to_le16(bq_len); |
| bq_len = (rx_ring->lbq_len == 65536) ? 0 : |
| (u16) rx_ring->lbq_len; |
| cqicb->lbq_len = cpu_to_le16(bq_len); |
| rx_ring->lbq_prod_idx = 0; |
| rx_ring->lbq_curr_idx = 0; |
| rx_ring->lbq_clean_idx = 0; |
| rx_ring->lbq_free_cnt = rx_ring->lbq_len; |
| } |
| if (rx_ring->sbq_len) { |
| cqicb->flags |= FLAGS_LS; /* Load sbq values */ |
| tmp = (u64)rx_ring->sbq_base_dma;; |
| base_indirect_ptr = (__le64 *) rx_ring->sbq_base_indirect; |
| page_entries = 0; |
| do { |
| *base_indirect_ptr = cpu_to_le64(tmp); |
| tmp += DB_PAGE_SIZE; |
| base_indirect_ptr++; |
| page_entries++; |
| } while (page_entries < MAX_DB_PAGES_PER_BQ(rx_ring->sbq_len)); |
| cqicb->sbq_addr = |
| cpu_to_le64(rx_ring->sbq_base_indirect_dma); |
| cqicb->sbq_buf_size = |
| cpu_to_le16((u16)(rx_ring->sbq_buf_size/2)); |
| bq_len = (rx_ring->sbq_len == 65536) ? 0 : |
| (u16) rx_ring->sbq_len; |
| cqicb->sbq_len = cpu_to_le16(bq_len); |
| rx_ring->sbq_prod_idx = 0; |
| rx_ring->sbq_curr_idx = 0; |
| rx_ring->sbq_clean_idx = 0; |
| rx_ring->sbq_free_cnt = rx_ring->sbq_len; |
| } |
| 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, DEBUG, "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; |
| } |
| 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 __iomem *) 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 = cpu_to_le64(tx_ring->wq_base_dma); |
| |
| wqicb->cnsmr_idx_addr = cpu_to_le64(tx_ring->cnsmr_idx_sh_reg_dma); |
| |
| 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, DEBUG, "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, DEBUG, |
| "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; |
| 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-tx-%d", |
| qdev->ndev->name, i); |
| } else { |
| /* |
| * Inbound queues handle unicast frames only. |
| */ |
| intr_context->handler = qlge_msix_rx_isr; |
| sprintf(intr_context->name, "%s-rx-%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, DEBUG, |
| "freeing msix interrupt %d.\n", i); |
| } else { |
| free_irq(qdev->pdev->irq, &qdev->rx_ring[0]); |
| QPRINTK(qdev, IFDOWN, DEBUG, |
| "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, DEBUG, |
| "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 < 256; i++) |
| hash_id[i] = i & (qdev->rss_ring_count - 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, DEBUG, "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, DEBUG, "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; |
| |
| status = ql_sem_spinlock(qdev, SEM_RT_IDX_MASK); |
| if (status) |
| return status; |
| |
| /* 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"); |
| goto exit; |
| } |
| } |
| |
| 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"); |
| goto exit; |
| } |
| 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"); |
| goto exit; |
| } |
| /* 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"); |
| goto exit; |
| } |
| } |
| |
| 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"); |
| exit: |
| ql_sem_unlock(qdev, SEM_RT_IDX_MASK); |
| return status; |
| } |
| |
| int ql_cam_route_initialize(struct ql_adapter *qdev) |
| { |
| int status; |
| |
| status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK); |
| if (status) |
| return status; |
| status = ql_set_mac_addr_reg(qdev, (u8 *) qdev->ndev->perm_addr, |
| MAC_ADDR_TYPE_CAM_MAC, qdev->func * MAX_CQ); |
| ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK); |
| 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; |
| } |
| |
| 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, and VLAN behavior. */ |
| value = NIC_RCV_CFG_DFQ | NIC_RCV_CFG_RV; |
| mask = NIC_RCV_CFG_DFQ_MASK | (NIC_RCV_CFG_RV << 16); |
| 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; |
| } |
| } |
| |
| /* Initialize the port and set the max framesize. */ |
| status = qdev->nic_ops->port_initialize(qdev); |
| if (status) { |
| QPRINTK(qdev, IFUP, ERR, "Failed to start port.\n"); |
| return status; |
| } |
| |
| /* Set up the MAC address and frame routing filter. */ |
| status = ql_cam_route_initialize(qdev); |
| if (status) { |
| QPRINTK(qdev, IFUP, ERR, |
| "Failed to init CAM/Routing tables.\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, DEBUG, "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 status = 0; |
| unsigned long end_jiffies = jiffies + |
| max((unsigned long)1, usecs_to_jiffies(30)); |
| |
| ql_write32(qdev, RST_FO, (RST_FO_FR << 16) | RST_FO_FR); |
| |
| do { |
| value = ql_read32(qdev, RST_FO); |
| if ((value & RST_FO_FR) == 0) |
| break; |
| cpu_relax(); |
| } while (time_before(jiffies, end_jiffies)); |
| |
| if (value & RST_FO_FR) { |
| QPRINTK(qdev, IFDOWN, ERR, |
| "ETIMEDOUT!!! errored out of resetting the chip!\n"); |
| status = -ETIMEDOUT; |
| } |
| |
| 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, Port %d, NIC Roll %d, NIC Rev = %d, " |
| "XG Roll = %d, XG Rev = %d.\n", |
| qdev->func, |
| qdev->port, |
| 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 %pM\n", ndev->dev_addr); |
| } |
| |
| static int ql_adapter_down(struct ql_adapter *qdev) |
| { |
| int i, status = 0; |
| struct rx_ring *rx_ring; |
| |
| netif_carrier_off(qdev->ndev); |
| |
| /* Don't kill the reset worker thread if we |
| * are in the process of recovery. |
| */ |
| if (test_bit(QL_ADAPTER_UP, &qdev->flags)) |
| cancel_delayed_work_sync(&qdev->asic_reset_work); |
| cancel_delayed_work_sync(&qdev->mpi_reset_work); |
| cancel_delayed_work_sync(&qdev->mpi_work); |
| cancel_delayed_work_sync(&qdev->mpi_idc_work); |
| cancel_delayed_work_sync(&qdev->mpi_port_cfg_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); |
| |
| /* Call netif_napi_del() from common point. |
| */ |
| for (i = qdev->rss_ring_first_cq_id; i < qdev->rx_ring_count; i++) |
| netif_napi_del(&qdev->rx_ring[i].napi); |
| |
| ql_free_rx_buffers(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; |
| |
| err = ql_adapter_initialize(qdev); |
| if (err) { |
| QPRINTK(qdev, IFUP, INFO, "Unable to initialize adapter.\n"); |
| goto err_init; |
| } |
| set_bit(QL_ADAPTER_UP, &qdev->flags); |
| ql_alloc_rx_buffers(qdev); |
| if ((ql_read32(qdev, STS) & qdev->port_init)) |
| netif_carrier_on(qdev->ndev); |
| ql_enable_interrupts(qdev); |
| ql_enable_all_completion_interrupts(qdev); |
| netif_tx_start_all_queues(qdev->ndev); |
| |
| return 0; |
| err_init: |
| ql_adapter_reset(qdev); |
| return err; |
| } |
| |
| 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); |
| 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 > MAX_CPUS) |
| cpu_cnt = MAX_CPUS; |
| |
| /* |
| * 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; |
| |
| 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(__le64); |
| rx_ring->lbq_buf_size = LARGE_BUFFER_SIZE; |
| rx_ring->sbq_len = NUM_SMALL_BUFFERS; |
| rx_ring->sbq_size = |
| rx_ring->sbq_len * sizeof(__le64); |
| 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(__le64); |
| rx_ring->lbq_buf_size = LARGE_BUFFER_SIZE; |
| rx_ring->sbq_len = NUM_SMALL_BUFFERS; |
| rx_ring->sbq_size = |
| rx_ring->sbq_len * sizeof(__le64); |
| 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); |
| 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"); |
| queue_delayed_work(qdev->workqueue, |
| &qdev->mpi_port_cfg_work, 0); |
| } 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, status; |
| |
| status = ql_sem_spinlock(qdev, SEM_RT_IDX_MASK); |
| if (status) |
| return; |
| 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) { |
| status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK); |
| if (status) |
| goto exit; |
| 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"); |
| ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK); |
| goto exit; |
| } |
| ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK); |
| 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); |
| ql_sem_unlock(qdev, SEM_RT_IDX_MASK); |
| } |
| |
| 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; |
| int status; |
| |
| 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); |
| |
| status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK); |
| if (status) |
| return status; |
| spin_lock(&qdev->hw_lock); |
| status = ql_set_mac_addr_reg(qdev, (u8 *) ndev->dev_addr, |
| MAC_ADDR_TYPE_CAM_MAC, qdev->func * MAX_CQ); |
| spin_unlock(&qdev->hw_lock); |
| if (status) |
| QPRINTK(qdev, HW, ERR, "Failed to load MAC address.\n"); |
| ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK); |
| return status; |
| } |
| |
| static void qlge_tx_timeout(struct net_device *ndev) |
| { |
| struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev); |
| ql_queue_asic_error(qdev); |
| } |
| |
| static void ql_asic_reset_work(struct work_struct *work) |
| { |
| struct ql_adapter *qdev = |
| container_of(work, struct ql_adapter, asic_reset_work.work); |
| int status; |
| |
| status = ql_adapter_down(qdev); |
| if (status) |
| goto error; |
| |
| status = ql_adapter_up(qdev); |
| if (status) |
| goto error; |
| |
| return; |
| error: |
| QPRINTK(qdev, IFUP, ALERT, |
| "Driver up/down cycle failed, closing device\n"); |
| rtnl_lock(); |
| set_bit(QL_ADAPTER_UP, &qdev->flags); |
| dev_close(qdev->ndev); |
| rtnl_unlock(); |
| } |
| |
| static struct nic_operations qla8012_nic_ops = { |
| .get_flash = ql_get_8012_flash_params, |
| .port_initialize = ql_8012_port_initialize, |
| }; |
| |
| static struct nic_operations qla8000_nic_ops = { |
| .get_flash = ql_get_8000_flash_params, |
| .port_initialize = ql_8000_port_initialize, |
| }; |
| |
| /* Find the pcie function number for the other NIC |
| * on this chip. Since both NIC functions share a |
| * common firmware we have the lowest enabled function |
| * do any common work. Examples would be resetting |
| * after a fatal firmware error, or doing a firmware |
| * coredump. |
| */ |
| static int ql_get_alt_pcie_func(struct ql_adapter *qdev) |
| { |
| int status = 0; |
| u32 temp; |
| u32 nic_func1, nic_func2; |
| |
| status = ql_read_mpi_reg(qdev, MPI_TEST_FUNC_PORT_CFG, |
| &temp); |
| if (status) |
| return status; |
| |
| nic_func1 = ((temp >> MPI_TEST_NIC1_FUNC_SHIFT) & |
| MPI_TEST_NIC_FUNC_MASK); |
| nic_func2 = ((temp >> MPI_TEST_NIC2_FUNC_SHIFT) & |
| MPI_TEST_NIC_FUNC_MASK); |
| |
| if (qdev->func == nic_func1) |
| qdev->alt_func = nic_func2; |
| else if (qdev->func == nic_func2) |
| qdev->alt_func = nic_func1; |
| else |
| status = -EIO; |
| |
| return status; |
| } |
| |
| static int ql_get_board_info(struct ql_adapter *qdev) |
| { |
| int status; |
| qdev->func = |
| (ql_read32(qdev, STS) & STS_FUNC_ID_MASK) >> STS_FUNC_ID_SHIFT; |
| if (qdev->func > 3) |
| return -EIO; |
| |
| status = ql_get_alt_pcie_func(qdev); |
| if (status) |
| return status; |
| |
| qdev->port = (qdev->func < qdev->alt_func) ? 0 : 1; |
| if (qdev->port) { |
| 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); |
| qdev->device_id = qdev->pdev->device; |
| if (qdev->device_id == QLGE_DEVICE_ID_8012) |
| qdev->nic_ops = &qla8012_nic_ops; |
| else if (qdev->device_id == QLGE_DEVICE_ID_8000) |
| qdev->nic_ops = &qla8000_nic_ops; |
| return status; |
| } |
| |
| 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(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_BIT_MASK(64))) { |
| set_bit(QL_DMA64, &qdev->flags); |
| err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); |
| } else { |
| err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
| if (!err) |
| err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
| } |
| |
| 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; |
| } |
| |
| qdev->ndev = ndev; |
| qdev->pdev = pdev; |
| err = ql_get_board_info(qdev); |
| if (err) { |
| dev_err(&pdev->dev, "Register access failed.\n"); |
| err = -EIO; |
| goto err_out; |
| } |
| 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 = qdev->nic_ops->get_flash(qdev); |
| if (err) { |
| dev_err(&pdev->dev, "Invalid FLASH.\n"); |
| goto err_out; |
| } |
| |
| 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); |
| INIT_DELAYED_WORK(&qdev->mpi_port_cfg_work, ql_mpi_port_cfg_work); |
| INIT_DELAYED_WORK(&qdev->mpi_idc_work, ql_mpi_idc_work); |
| mutex_init(&qdev->mpi_mutex); |
| init_completion(&qdev->ide_completion); |
| |
| 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 const struct net_device_ops qlge_netdev_ops = { |
| .ndo_open = qlge_open, |
| .ndo_stop = qlge_close, |
| .ndo_start_xmit = qlge_send, |
| .ndo_change_mtu = qlge_change_mtu, |
| .ndo_get_stats = qlge_get_stats, |
| .ndo_set_multicast_list = qlge_set_multicast_list, |
| .ndo_set_mac_address = qlge_set_mac_address, |
| .ndo_validate_addr = eth_validate_addr, |
| .ndo_tx_timeout = qlge_tx_timeout, |
| .ndo_vlan_rx_register = ql_vlan_rx_register, |
| .ndo_vlan_rx_add_vid = ql_vlan_rx_add_vid, |
| .ndo_vlan_rx_kill_vid = ql_vlan_rx_kill_vid, |
| }; |
| |
| 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_mq(sizeof(struct ql_adapter), |
| min(MAX_CPUS, (int)num_online_cpus())); |
| 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); |
| ndev->features |= NETIF_F_GRO; |
| |
| 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->netdev_ops = &qlge_netdev_ops; |
| SET_ETHTOOL_OPS(ndev, &qlge_ethtool_ops); |
| ndev->watchdog_timeo = 10 * HZ; |
| |
| 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); |
| 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); |
| 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; |
| } |
| |
| #ifdef CONFIG_PM |
| 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; |
| } |
| #endif /* CONFIG_PM */ |
| |
| 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); |