#include "qlge.h"
+static void ql_display_mb_sts(struct ql_adapter *qdev,
+ struct mbox_params *mbcp)
+{
+ int i;
+ static char *err_sts[] = {
+ "Command Complete",
+ "Command Not Supported",
+ "Host Interface Error",
+ "Checksum Error",
+ "Unused Completion Status",
+ "Test Failed",
+ "Command Parameter Error"};
+
+ QPRINTK(qdev, DRV, DEBUG, "%s.\n",
+ err_sts[mbcp->mbox_out[0] & 0x0000000f]);
+ for (i = 0; i < mbcp->out_count; i++)
+ QPRINTK(qdev, DRV, DEBUG, "mbox_out[%d] = 0x%.08x.\n",
+ i, mbcp->mbox_out[i]);
+}
+
int ql_read_mpi_reg(struct ql_adapter *qdev, u32 reg, u32 *data)
{
int status;
return status;
}
+/* Wait for a single mailbox command to complete.
+ * Returns zero on success.
+ */
+static int ql_wait_mbx_cmd_cmplt(struct ql_adapter *qdev)
+{
+ int count = 50; /* TODO: arbitrary for now. */
+ u32 value;
+
+ do {
+ value = ql_read32(qdev, STS);
+ if (value & STS_PI)
+ return 0;
+ udelay(UDELAY_DELAY); /* 10us */
+ } while (--count);
+ return -ETIMEDOUT;
+}
+
+/* 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;
+}
+
static void ql_link_up(struct ql_adapter *qdev, struct mbox_params *mbcp)
{
mbcp->out_count = 2;
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;
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;
+
case AEN_LINK_UP:
ql_link_up(qdev, mbcp);
break;
ql_init_fw_done(qdev, mbcp);
break;
- case MB_CMD_STS_GOOD:
- break;
-
case AEN_FW_INIT_FAIL:
case AEN_SYS_ERR:
- case MB_CMD_STS_ERR:
ql_queue_fw_error(qdev);
break;
return status;
}
+/* 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, count;
+
+ mutex_lock(&qdev->mpi_mutex);
+
+ /* 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 arrive then we can
+ * assume something is wrong. */
+ count = 5;
+ do {
+ /* Wait for the interrupt to come in. */
+ status = ql_wait_mbx_cmd_cmplt(qdev);
+ if (status)
+ goto end;
+
+ /* 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))
+ break;
+ } while (--count);
+
+ if (!count) {
+ QPRINTK(qdev, DRV, ERR,
+ "Timed out waiting for mailbox complete.\n");
+ status = -ETIMEDOUT;
+ goto end;
+ }
+
+ /* 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:
+ mutex_unlock(&qdev->mpi_mutex);
+ /* End polled mode for MPI */
+ ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16) | INTR_MASK_PI);
+ return status;
+}
+
+/* Get functional state for MPI firmware.
+ * Returns zero on success.
+ */
+int ql_mb_get_fw_state(struct ql_adapter *qdev)
+{
+ struct mbox_params mbc;
+ struct mbox_params *mbcp = &mbc;
+ int status = 0;
+
+ memset(mbcp, 0, sizeof(struct mbox_params));
+
+ mbcp->in_count = 1;
+ mbcp->out_count = 2;
+
+ mbcp->mbox_in[0] = MB_CMD_GET_FW_STATE;
+
+ status = ql_mailbox_command(qdev, mbcp);
+ if (status)
+ return status;
+
+ if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
+ QPRINTK(qdev, DRV, ERR,
+ "Failed Get Firmware State.\n");
+ status = -EIO;
+ }
+
+ /* If bit zero is set in mbx 1 then the firmware is
+ * running, but not initialized. This should never
+ * happen.
+ */
+ if (mbcp->mbox_out[1] & 1) {
+ QPRINTK(qdev, DRV, ERR,
+ "Firmware waiting for initialization.\n");
+ status = -EIO;
+ }
+
+ return status;
+}
+
void ql_mpi_work(struct work_struct *work)
{
struct ql_adapter *qdev =
projects / platform / adaptation / renesas_rcar / renesas_kernel.git / commitdiff