예제 #1
0
/* We are being asked by firmware to accept
 * a change to the port.  This is only
 * a change to max frame sizes (Tx/Rx), pause
 * parameters, or loopback mode. We wake up a worker
 * to handler processing this since a mailbox command
 * will need to be sent to ACK the request.
 */
static int ql_idc_req_aen(struct ql_adapter *qdev)
{
	int status;
	struct mbox_params *mbcp = &qdev->idc_mbc;

	QPRINTK(qdev, DRV, ERR, "Enter!\n");
	/* Get the status data and start up a thread to
	 * handle the request.
	 */
	mbcp = &qdev->idc_mbc;
	mbcp->out_count = 4;
	status = ql_get_mb_sts(qdev, mbcp);
	if (status) {
		QPRINTK(qdev, DRV, ERR,
			"Could not read MPI, resetting ASIC!\n");
		ql_queue_asic_error(qdev);
	} else	{
		/* Begin polled mode early so
		 * we don't get another interrupt
		 * when we leave mpi_worker.
		 */
		ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16));
		queue_delayed_work(qdev->workqueue, &qdev->mpi_idc_work, 0);
	}
	return status;
}
예제 #2
0
/* Execute a single mailbox command.
 * Caller must hold PROC_ADDR semaphore.
 */
static int ql_exec_mb_cmd(struct ql_adapter *qdev, struct mbox_params *mbcp)
{
	int i, status;

	/*
	 * Make sure there's nothing pending.
	 * This shouldn't happen.
	 */
	if (ql_read32(qdev, CSR) & CSR_HRI)
		return -EIO;

	status = ql_sem_spinlock(qdev, SEM_PROC_REG_MASK);
	if (status)
		return status;

	/*
	 * Fill the outbound mailboxes.
	 */
	for (i = 0; i < mbcp->in_count; i++) {
		status = ql_write_mpi_reg(qdev, qdev->mailbox_in + i,
						mbcp->mbox_in[i]);
		if (status)
			goto end;
	}
	/*
	 * Wake up the MPI firmware.
	 */
	ql_write32(qdev, CSR, CSR_CMD_SET_H2R_INT);
end:
	ql_sem_unlock(qdev, SEM_PROC_REG_MASK);
	return status;
}
예제 #3
0
int ql_write_mpi_reg(struct ql_adapter *qdev, u32 reg, u32 data)
{
	int status = 0;
	/* wait for reg to come ready */
	status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
	if (status)
		goto exit;
	/* write the data to the data reg */
	ql_write32(qdev, PROC_DATA, data);
	/* trigger the write */
	ql_write32(qdev, PROC_ADDR, reg);
	/* wait for reg to come ready */
	status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
	if (status)
		goto exit;
exit:
	return status;
}
예제 #4
0
int ql_hard_reset_mpi_risc(struct ql_adapter *qdev)
{
    u32 tmp;
    int count = UDELAY_COUNT;

    /* Reset the RISC */
    ql_write32(qdev, CSR, CSR_CMD_SET_RST);
    do {
        tmp = ql_read32(qdev, CSR);
        if (tmp & CSR_RR) {
            ql_write32(qdev, CSR, CSR_CMD_CLR_RST);
            break;
        }
        mdelay(UDELAY_DELAY);
        count--;
    } while (count);
    return (count == 0) ? -ETIMEDOUT : 0;
}
예제 #5
0
int ql_unpause_mpi_risc(struct ql_adapter *qdev)
{
    u32 tmp;

    /* Un-pause the RISC */
    tmp = ql_read32(qdev, CSR);
    if (!(tmp & CSR_RP))
        return -EIO;

    ql_write32(qdev, CSR, CSR_CMD_CLR_PAUSE);
    return 0;
}
예제 #6
0
int ql_pause_mpi_risc(struct ql_adapter *qdev)
{
    u32 tmp;
    int count = UDELAY_COUNT;

    /* Pause the RISC */
    ql_write32(qdev, CSR, CSR_CMD_SET_PAUSE);
    do {
        tmp = ql_read32(qdev, CSR);
        if (tmp & CSR_RP)
            break;
        mdelay(UDELAY_DELAY);
        count--;
    } while (count);
    return (count == 0) ? -ETIMEDOUT : 0;
}
예제 #7
0
static void ql_link_up(struct ql_adapter *qdev, struct mbox_params *mbcp)
{
	int status;
	mbcp->out_count = 2;

	status = ql_get_mb_sts(qdev, mbcp);
	if (status) {
		QPRINTK(qdev, DRV, ERR,
			"%s: Could not get mailbox status.\n", __func__);
		return;
	}

	qdev->link_status = mbcp->mbox_out[1];
	QPRINTK(qdev, DRV, ERR, "Link Up.\n");

	/* If we're coming back from an IDC event
	 * then set up the CAM and frame routing.
	 */
	if (test_bit(QL_CAM_RT_SET, &qdev->flags)) {
		status = ql_cam_route_initialize(qdev);
		if (status) {
			QPRINTK(qdev, IFUP, ERR,
			"Failed to init CAM/Routing tables.\n");
			return;
		} else
			clear_bit(QL_CAM_RT_SET, &qdev->flags);
	}

	/* Queue up a worker to check the frame
	 * size information, and fix it if it's not
	 * to our liking.
	 */
	if (!test_bit(QL_PORT_CFG, &qdev->flags)) {
		QPRINTK(qdev, DRV, ERR, "Queue Port Config Worker!\n");
		set_bit(QL_PORT_CFG, &qdev->flags);
		/* Begin polled mode early so
		 * we don't get another interrupt
		 * when we leave mpi_worker dpc.
		 */
		ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16));
		queue_delayed_work(qdev->workqueue,
				&qdev->mpi_port_cfg_work, 0);
	}

	ql_link_on(qdev);
}
예제 #8
0
int ql_read_mpi_reg(struct ql_adapter *qdev, u32 reg, u32 *data)
{
	int status;
	/* wait for reg to come ready */
	status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
	if (status)
		goto exit;
	/* set up for reg read */
	ql_write32(qdev, PROC_ADDR, reg | PROC_ADDR_R);
	/* wait for reg to come ready */
	status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
	if (status)
		goto exit;
	/* get the data */
	*data = ql_read32(qdev, PROC_DATA);
exit:
	return status;
}
예제 #9
0
/* Execute a single mailbox command.
 * mbcp is a pointer to an array of u32.  Each
 * element in the array contains the value for it's
 * respective mailbox register.
 */
static int ql_mailbox_command(struct ql_adapter *qdev, struct mbox_params *mbcp)
{
	int status;
	unsigned long count;


	/* Begin polled mode for MPI */
	ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16));

	/* Load the mailbox registers and wake up MPI RISC. */
	status = ql_exec_mb_cmd(qdev, mbcp);
	if (status)
		goto end;


	/* If we're generating a system error, then there's nothing
	 * to wait for.
	 */
	if (mbcp->mbox_in[0] == MB_CMD_MAKE_SYS_ERR)
		goto end;

	/* Wait for the command to complete. We loop
	 * here because some AEN might arrive while
	 * we're waiting for the mailbox command to
	 * complete. If more than 5 seconds expire we can
	 * assume something is wrong. */
	count = jiffies + HZ * MAILBOX_TIMEOUT;
	do {
		/* Wait for the interrupt to come in. */
		status = ql_wait_mbx_cmd_cmplt(qdev);
		if (status)
			continue;

		/* Process the event.  If it's an AEN, it
		 * will be handled in-line or a worker
		 * will be spawned. If it's our completion
		 * we will catch it below.
		 */
		status = ql_mpi_handler(qdev, mbcp);
		if (status)
			goto end;

		/* It's either the completion for our mailbox
		 * command complete or an AEN.  If it's our
		 * completion then get out.
		 */
		if (((mbcp->mbox_out[0] & 0x0000f000) ==
					MB_CMD_STS_GOOD) ||
			((mbcp->mbox_out[0] & 0x0000f000) ==
					MB_CMD_STS_INTRMDT))
			goto done;
	} while (time_before(jiffies, count));

	QPRINTK(qdev, DRV, ERR,
		"Timed out waiting for mailbox complete.\n");
	status = -ETIMEDOUT;
	goto end;

done:

	/* Now we can clear the interrupt condition
	 * and look at our status.
	 */
	ql_write32(qdev, CSR, CSR_CMD_CLR_R2PCI_INT);

	if (((mbcp->mbox_out[0] & 0x0000f000) !=
					MB_CMD_STS_GOOD) &&
		((mbcp->mbox_out[0] & 0x0000f000) !=
					MB_CMD_STS_INTRMDT)) {
		ql_display_mb_sts(qdev, mbcp);
		status = -EIO;
	}
end:
	/* End polled mode for MPI */
	ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16) | INTR_MASK_PI);
	return status;
}
예제 #10
0
/* Process an async event and clear it unless it's an
 * error condition.
 *  This can get called iteratively from the mpi_work thread
 *  when events arrive via an interrupt.
 *  It also gets called when a mailbox command is polling for
 *  it's completion. */
static int ql_mpi_handler(struct ql_adapter *qdev, struct mbox_params *mbcp)
{
	int status;
	int orig_count = mbcp->out_count;

	/* Just get mailbox zero for now. */
	mbcp->out_count = 1;
	status = ql_get_mb_sts(qdev, mbcp);
	if (status) {
		QPRINTK(qdev, DRV, ERR,
			"Could not read MPI, resetting ASIC!\n");
		ql_queue_asic_error(qdev);
		goto end;
	}

	switch (mbcp->mbox_out[0]) {

	/* This case is only active when we arrive here
	 * as a result of issuing a mailbox command to
	 * the firmware.
	 */
	case MB_CMD_STS_INTRMDT:
	case MB_CMD_STS_GOOD:
	case MB_CMD_STS_INVLD_CMD:
	case MB_CMD_STS_XFC_ERR:
	case MB_CMD_STS_CSUM_ERR:
	case MB_CMD_STS_ERR:
	case MB_CMD_STS_PARAM_ERR:
		/* We can only get mailbox status if we're polling from an
		 * unfinished command.  Get the rest of the status data and
		 * return back to the caller.
		 * We only end up here when we're polling for a mailbox
		 * command completion.
		 */
		mbcp->out_count = orig_count;
		status = ql_get_mb_sts(qdev, mbcp);
		return status;

	/* We are being asked by firmware to accept
	 * a change to the port.  This is only
	 * a change to max frame sizes (Tx/Rx), pause
	 * parameters, or loopback mode.
	 */
	case AEN_IDC_REQ:
		status = ql_idc_req_aen(qdev);
		break;

	/* Process and inbound IDC event.
	 * This will happen when we're trying to
	 * change tx/rx max frame size, change pause
	 * parameters or loopback mode.
	 */
	case AEN_IDC_CMPLT:
	case AEN_IDC_EXT:
		status = ql_idc_cmplt_aen(qdev);
		break;

	case AEN_LINK_UP:
		ql_link_up(qdev, mbcp);
		break;

	case AEN_LINK_DOWN:
		ql_link_down(qdev, mbcp);
		break;

	case AEN_FW_INIT_DONE:
		/* If we're in process on executing the firmware,
		 * then convert the status to normal mailbox status.
		 */
		if (mbcp->mbox_in[0] == MB_CMD_EX_FW) {
			mbcp->out_count = orig_count;
			status = ql_get_mb_sts(qdev, mbcp);
			mbcp->mbox_out[0] = MB_CMD_STS_GOOD;
			return status;
		}
		ql_init_fw_done(qdev, mbcp);
		break;

	case AEN_AEN_SFP_IN:
		ql_sfp_in(qdev, mbcp);
		break;

	case AEN_AEN_SFP_OUT:
		ql_sfp_out(qdev, mbcp);
		break;

	/* This event can arrive at boot time or after an
	 * MPI reset if the firmware failed to initialize.
	 */
	case AEN_FW_INIT_FAIL:
		/* If we're in process on executing the firmware,
		 * then convert the status to normal mailbox status.
		 */
		if (mbcp->mbox_in[0] == MB_CMD_EX_FW) {
			mbcp->out_count = orig_count;
			status = ql_get_mb_sts(qdev, mbcp);
			mbcp->mbox_out[0] = MB_CMD_STS_ERR;
			return status;
		}
		QPRINTK(qdev, DRV, ERR,
			"Firmware initialization failed.\n");
		status = -EIO;
		ql_queue_fw_error(qdev);
		break;

	case AEN_SYS_ERR:
		QPRINTK(qdev, DRV, ERR,
			"System Error.\n");
		ql_queue_fw_error(qdev);
		status = -EIO;
		break;

	case AEN_AEN_LOST:
		ql_aen_lost(qdev, mbcp);
		break;

	case AEN_DCBX_CHG:
		/* Need to support AEN 8110 */
		break;
	default:
		QPRINTK(qdev, DRV, ERR,
			"Unsupported AE %.08x.\n", mbcp->mbox_out[0]);
		/* Clear the MPI firmware status. */
	}
end:
	ql_write32(qdev, CSR, CSR_CMD_CLR_R2PCI_INT);
	/* Restore the original mailbox count to
	 * what the caller asked for.  This can get
	 * changed when a mailbox command is waiting
	 * for a response and an AEN arrives and
	 * is handled.
	 * */
	mbcp->out_count = orig_count;
	return status;
}