drivers/net/qlge/qlge_mpi.c

   1 #include "qlge.h"
   2
   3 static int ql_read_mbox_reg(struct ql_adapter *qdev, u32 reg, u32 *data)
   4 {
   5         int status;
   6         /* wait for reg to come ready */
   7         status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
   8         if (status)
   9                 goto exit;
  10         /* set up for reg read */
  11         ql_write32(qdev, PROC_ADDR, reg | PROC_ADDR_R);
  12         /* wait for reg to come ready */
  13         status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
  14         if (status)
  15                 goto exit;
  16         /* get the data */
  17         *data = ql_read32(qdev, PROC_DATA);
  18 exit:
  19         return status;
  20 }
  21
  22 static int ql_get_mb_sts(struct ql_adapter *qdev, struct mbox_params *mbcp)
  23 {
  24         int i, status;
  25
  26         status = ql_sem_spinlock(qdev, SEM_PROC_REG_MASK);
  27         if (status)
  28                 return -EBUSY;
  29         for (i = 0; i < mbcp->out_count; i++) {
  30                 status =
  31                     ql_read_mbox_reg(qdev, qdev->mailbox_out + i,
  32                                      &mbcp->mbox_out[i]);
  33                 if (status) {
  34                         QPRINTK(qdev, DRV, ERR, "Failed mailbox read.\n");
  35                         break;
  36                 }
  37         }
  38         ql_sem_unlock(qdev, SEM_PROC_REG_MASK); /* does flush too */
  39         return status;
  40 }
  41
  42 static void ql_link_up(struct ql_adapter *qdev, struct mbox_params *mbcp)
  43 {
  44         mbcp->out_count = 2;
  45
  46         if (ql_get_mb_sts(qdev, mbcp))
  47                 goto exit;
  48
  49         qdev->link_status = mbcp->mbox_out[1];
  50         QPRINTK(qdev, DRV, ERR, "Link Up.\n");
  51         QPRINTK(qdev, DRV, INFO, "Link Status = 0x%.08x.\n", mbcp->mbox_out[1]);
  52         if (!netif_carrier_ok(qdev->ndev)) {
  53                 QPRINTK(qdev, LINK, INFO, "Link is Up.\n");
  54                 netif_carrier_on(qdev->ndev);
  55                 netif_wake_queue(qdev->ndev);
  56         }
  57 exit:
  58         /* Clear the MPI firmware status. */
  59         ql_write32(qdev, CSR, CSR_CMD_CLR_R2PCI_INT);
  60 }
  61
  62 static void ql_link_down(struct ql_adapter *qdev, struct mbox_params *mbcp)
  63 {
  64         mbcp->out_count = 3;
  65
  66         if (ql_get_mb_sts(qdev, mbcp)) {
  67                 QPRINTK(qdev, DRV, ERR, "Firmware did not initialize!\n");
  68                 goto exit;
  69         }
  70
  71         if (netif_carrier_ok(qdev->ndev)) {
  72                 QPRINTK(qdev, LINK, INFO, "Link is Down.\n");
  73                 netif_carrier_off(qdev->ndev);
  74                 netif_stop_queue(qdev->ndev);
  75         }
  76         QPRINTK(qdev, DRV, ERR, "Link Down.\n");
  77         QPRINTK(qdev, DRV, ERR, "Link Status = 0x%.08x.\n", mbcp->mbox_out[1]);
  78 exit:
  79         /* Clear the MPI firmware status. */
  80         ql_write32(qdev, CSR, CSR_CMD_CLR_R2PCI_INT);
  81 }
  82
  83 static void ql_init_fw_done(struct ql_adapter *qdev, struct mbox_params *mbcp)
  84 {
  85         mbcp->out_count = 2;
  86
  87         if (ql_get_mb_sts(qdev, mbcp)) {
  88                 QPRINTK(qdev, DRV, ERR, "Firmware did not initialize!\n");
  89                 goto exit;
  90         }
  91         QPRINTK(qdev, DRV, ERR, "Firmware initialized!\n");
  92         QPRINTK(qdev, DRV, ERR, "Firmware status = 0x%.08x.\n",
  93                 mbcp->mbox_out[0]);
  94         QPRINTK(qdev, DRV, ERR, "Firmware Revision  = 0x%.08x.\n",
  95                 mbcp->mbox_out[1]);
  96 exit:
  97         /* Clear the MPI firmware status. */
  98         ql_write32(qdev, CSR, CSR_CMD_CLR_R2PCI_INT);
  99 }
 100
 101 void ql_mpi_work(struct work_struct *work)
 102 {
 103         struct ql_adapter *qdev =
 104             container_of(work, struct ql_adapter, mpi_work.work);
 105         struct mbox_params mbc;
 106         struct mbox_params *mbcp = &mbc;
 107         mbcp->out_count = 1;
 108
 109         while (ql_read32(qdev, STS) & STS_PI) {
 110                 if (ql_get_mb_sts(qdev, mbcp)) {
 111                         QPRINTK(qdev, DRV, ERR,
 112                                 "Could not read MPI, resetting ASIC!\n");
 113                         ql_queue_asic_error(qdev);
 114                 }
 115
 116                 switch (mbcp->mbox_out[0]) {
 117                 case AEN_LINK_UP:
 118                         ql_link_up(qdev, mbcp);
 119                         break;
 120                 case AEN_LINK_DOWN:
 121                         ql_link_down(qdev, mbcp);
 122                         break;
 123                 case AEN_FW_INIT_DONE:
 124                         ql_init_fw_done(qdev, mbcp);
 125                         break;
 126                 case MB_CMD_STS_GOOD:
 127                         break;
 128                 case AEN_FW_INIT_FAIL:
 129                 case AEN_SYS_ERR:
 130                 case MB_CMD_STS_ERR:
 131                         ql_queue_fw_error(qdev);
 132                 default:
 133                         /* Clear the MPI firmware status. */
 134                         ql_write32(qdev, CSR, CSR_CMD_CLR_R2PCI_INT);
 135                         break;
 136                 }
 137         }
 138         ql_enable_completion_interrupt(qdev, 0);
 139 }
 140
 141 void ql_mpi_reset_work(struct work_struct *work)
 142 {
 143         struct ql_adapter *qdev =
 144             container_of(work, struct ql_adapter, mpi_reset_work.work);
 145         QPRINTK(qdev, DRV, ERR,
 146                 "Enter, qdev = %p..\n", qdev);
 147         ql_write32(qdev, CSR, CSR_CMD_SET_RST);
 148         msleep(50);
 149         ql_write32(qdev, CSR, CSR_CMD_CLR_RST);
 150 }