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path: root/drivers/scsi/elx/efct/efct_hw.c
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Diffstat (limited to 'drivers/scsi/elx/efct/efct_hw.c')
-rw-r--r--drivers/scsi/elx/efct/efct_hw.c251
1 files changed, 251 insertions, 0 deletions
diff --git a/drivers/scsi/elx/efct/efct_hw.c b/drivers/scsi/elx/efct/efct_hw.c
index bcd2b522e797..ce4736c41564 100644
--- a/drivers/scsi/elx/efct/efct_hw.c
+++ b/drivers/scsi/elx/efct/efct_hw.c
@@ -3329,3 +3329,254 @@ efct_hw_firmware_write(struct efct_hw *hw, struct efc_dma *dma, u32 size,
return rc;
}
+
+static int
+efct_hw_cb_port_control(struct efct_hw *hw, int status, u8 *mqe,
+ void *arg)
+{
+ return 0;
+}
+
+int
+efct_hw_port_control(struct efct_hw *hw, enum efct_hw_port ctrl,
+ uintptr_t value,
+ void (*cb)(int status, uintptr_t value, void *arg),
+ void *arg)
+{
+ int rc = -EIO;
+ u8 link[SLI4_BMBX_SIZE];
+ u32 speed = 0;
+ u8 reset_alpa = 0;
+
+ switch (ctrl) {
+ case EFCT_HW_PORT_INIT:
+ if (!sli_cmd_config_link(&hw->sli, link))
+ rc = efct_hw_command(hw, link, EFCT_CMD_NOWAIT,
+ efct_hw_cb_port_control, NULL);
+
+ if (rc != 0) {
+ efc_log_err(hw->os, "CONFIG_LINK failed\n");
+ break;
+ }
+ speed = hw->config.speed;
+ reset_alpa = (u8)(value & 0xff);
+
+ rc = -EIO;
+ if (!sli_cmd_init_link(&hw->sli, link, speed, reset_alpa))
+ rc = efct_hw_command(hw, link, EFCT_CMD_NOWAIT,
+ efct_hw_cb_port_control, NULL);
+ /* Free buffer on error, since no callback is coming */
+ if (rc)
+ efc_log_err(hw->os, "INIT_LINK failed\n");
+ break;
+
+ case EFCT_HW_PORT_SHUTDOWN:
+ if (!sli_cmd_down_link(&hw->sli, link))
+ rc = efct_hw_command(hw, link, EFCT_CMD_NOWAIT,
+ efct_hw_cb_port_control, NULL);
+ /* Free buffer on error, since no callback is coming */
+ if (rc)
+ efc_log_err(hw->os, "DOWN_LINK failed\n");
+ break;
+
+ default:
+ efc_log_debug(hw->os, "unhandled control %#x\n", ctrl);
+ break;
+ }
+
+ return rc;
+}
+
+void
+efct_hw_teardown(struct efct_hw *hw)
+{
+ u32 i = 0;
+ u32 destroy_queues;
+ u32 free_memory;
+ struct efc_dma *dma;
+ struct efct *efct = hw->os;
+
+ destroy_queues = (hw->state == EFCT_HW_STATE_ACTIVE);
+ free_memory = (hw->state != EFCT_HW_STATE_UNINITIALIZED);
+
+ /* Cancel Sliport Healthcheck */
+ if (hw->sliport_healthcheck) {
+ hw->sliport_healthcheck = 0;
+ efct_hw_config_sli_port_health_check(hw, 0, 0);
+ }
+
+ if (hw->state != EFCT_HW_STATE_QUEUES_ALLOCATED) {
+ hw->state = EFCT_HW_STATE_TEARDOWN_IN_PROGRESS;
+
+ efct_hw_flush(hw);
+
+ if (list_empty(&hw->cmd_head))
+ efc_log_debug(hw->os,
+ "All commands completed on MQ queue\n");
+ else
+ efc_log_debug(hw->os,
+ "Some cmds still pending on MQ queue\n");
+
+ /* Cancel any remaining commands */
+ efct_hw_command_cancel(hw);
+ } else {
+ hw->state = EFCT_HW_STATE_TEARDOWN_IN_PROGRESS;
+ }
+
+ dma_free_coherent(&efct->pci->dev,
+ hw->rnode_mem.size, hw->rnode_mem.virt,
+ hw->rnode_mem.phys);
+ memset(&hw->rnode_mem, 0, sizeof(struct efc_dma));
+
+ if (hw->io) {
+ for (i = 0; i < hw->config.n_io; i++) {
+ if (hw->io[i] && hw->io[i]->sgl &&
+ hw->io[i]->sgl->virt) {
+ dma_free_coherent(&efct->pci->dev,
+ hw->io[i]->sgl->size,
+ hw->io[i]->sgl->virt,
+ hw->io[i]->sgl->phys);
+ }
+ kfree(hw->io[i]);
+ hw->io[i] = NULL;
+ }
+ kfree(hw->io);
+ hw->io = NULL;
+ kfree(hw->wqe_buffs);
+ hw->wqe_buffs = NULL;
+ }
+
+ dma = &hw->xfer_rdy;
+ dma_free_coherent(&efct->pci->dev,
+ dma->size, dma->virt, dma->phys);
+ memset(dma, 0, sizeof(struct efc_dma));
+
+ dma = &hw->loop_map;
+ dma_free_coherent(&efct->pci->dev,
+ dma->size, dma->virt, dma->phys);
+ memset(dma, 0, sizeof(struct efc_dma));
+
+ for (i = 0; i < hw->wq_count; i++)
+ sli_queue_free(&hw->sli, &hw->wq[i], destroy_queues,
+ free_memory);
+
+ for (i = 0; i < hw->rq_count; i++)
+ sli_queue_free(&hw->sli, &hw->rq[i], destroy_queues,
+ free_memory);
+
+ for (i = 0; i < hw->mq_count; i++)
+ sli_queue_free(&hw->sli, &hw->mq[i], destroy_queues,
+ free_memory);
+
+ for (i = 0; i < hw->cq_count; i++)
+ sli_queue_free(&hw->sli, &hw->cq[i], destroy_queues,
+ free_memory);
+
+ for (i = 0; i < hw->eq_count; i++)
+ sli_queue_free(&hw->sli, &hw->eq[i], destroy_queues,
+ free_memory);
+
+ /* Free rq buffers */
+ efct_hw_rx_free(hw);
+
+ efct_hw_queue_teardown(hw);
+
+ kfree(hw->wq_cpu_array);
+
+ sli_teardown(&hw->sli);
+
+ /* record the fact that the queues are non-functional */
+ hw->state = EFCT_HW_STATE_UNINITIALIZED;
+
+ /* free sequence free pool */
+ kfree(hw->seq_pool);
+ hw->seq_pool = NULL;
+
+ /* free hw_wq_callback pool */
+ efct_hw_reqtag_pool_free(hw);
+
+ mempool_destroy(hw->cmd_ctx_pool);
+ mempool_destroy(hw->mbox_rqst_pool);
+
+ /* Mark HW setup as not having been called */
+ hw->hw_setup_called = false;
+}
+
+static int
+efct_hw_sli_reset(struct efct_hw *hw, enum efct_hw_reset reset,
+ enum efct_hw_state prev_state)
+{
+ int rc = 0;
+
+ switch (reset) {
+ case EFCT_HW_RESET_FUNCTION:
+ efc_log_debug(hw->os, "issuing function level reset\n");
+ if (sli_reset(&hw->sli)) {
+ efc_log_err(hw->os, "sli_reset failed\n");
+ rc = -EIO;
+ }
+ break;
+ case EFCT_HW_RESET_FIRMWARE:
+ efc_log_debug(hw->os, "issuing firmware reset\n");
+ if (sli_fw_reset(&hw->sli)) {
+ efc_log_err(hw->os, "sli_soft_reset failed\n");
+ rc = -EIO;
+ }
+ /*
+ * Because the FW reset leaves the FW in a non-running state,
+ * follow that with a regular reset.
+ */
+ efc_log_debug(hw->os, "issuing function level reset\n");
+ if (sli_reset(&hw->sli)) {
+ efc_log_err(hw->os, "sli_reset failed\n");
+ rc = -EIO;
+ }
+ break;
+ default:
+ efc_log_err(hw->os, "unknown type - no reset performed\n");
+ hw->state = prev_state;
+ rc = -EINVAL;
+ break;
+ }
+
+ return rc;
+}
+
+int
+efct_hw_reset(struct efct_hw *hw, enum efct_hw_reset reset)
+{
+ int rc = 0;
+ enum efct_hw_state prev_state = hw->state;
+
+ if (hw->state != EFCT_HW_STATE_ACTIVE)
+ efc_log_debug(hw->os,
+ "HW state %d is not active\n", hw->state);
+
+ hw->state = EFCT_HW_STATE_RESET_IN_PROGRESS;
+
+ /*
+ * If the prev_state is already reset/teardown in progress,
+ * don't continue further
+ */
+ if (prev_state == EFCT_HW_STATE_RESET_IN_PROGRESS ||
+ prev_state == EFCT_HW_STATE_TEARDOWN_IN_PROGRESS)
+ return efct_hw_sli_reset(hw, reset, prev_state);
+
+ if (prev_state != EFCT_HW_STATE_UNINITIALIZED) {
+ efct_hw_flush(hw);
+
+ if (list_empty(&hw->cmd_head))
+ efc_log_debug(hw->os,
+ "All commands completed on MQ queue\n");
+ else
+ efc_log_err(hw->os,
+ "Some commands still pending on MQ queue\n");
+ }
+
+ /* Reset the chip */
+ rc = efct_hw_sli_reset(hw, reset, prev_state);
+ if (rc == -EINVAL)
+ return -EIO;
+
+ return rc;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 01:41:52 +0000