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Subject[PATCH v4 08/32] scsi: hisi_sas: add hisi_sas_remove
Date
This patch also includes relevant memory/pool
free'ing and sas/scsi host removal

Signed-off-by: John Garry <john.garry@huawei.com>
---
drivers/scsi/hisi_sas/hisi_sas_main.c | 71 ++++++++++++++++++++++++++++++++++-
1 file changed, 70 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 97f5368..b96a2ab 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -126,6 +126,59 @@ err_out:
return -ENOMEM;
}

+static void hisi_sas_free(struct hisi_hba *hisi_hba)
+{
+ struct device *dev = &hisi_hba->pdev->dev;
+ int i, s;
+
+ for (i = 0; i < hisi_hba->queue_count; i++) {
+ s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
+ if (hisi_hba->cmd_hdr[i])
+ dma_free_coherent(dev, s,
+ hisi_hba->cmd_hdr[i],
+ hisi_hba->cmd_hdr_dma[i]);
+
+ s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
+ if (hisi_hba->complete_hdr[i])
+ dma_free_coherent(dev, s,
+ hisi_hba->complete_hdr[i],
+ hisi_hba->complete_hdr_dma[i]);
+ }
+
+ dma_pool_destroy(hisi_hba->status_buffer_pool);
+ dma_pool_destroy(hisi_hba->command_table_pool);
+ dma_pool_destroy(hisi_hba->sge_page_pool);
+
+ s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
+ if (hisi_hba->itct)
+ dma_free_coherent(dev, s,
+ hisi_hba->itct, hisi_hba->itct_dma);
+
+ s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_iost);
+ if (hisi_hba->iost)
+ dma_free_coherent(dev, s,
+ hisi_hba->iost, hisi_hba->iost_dma);
+
+ s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint);
+ if (hisi_hba->breakpoint)
+ dma_free_coherent(dev, s,
+ hisi_hba->breakpoint,
+ hisi_hba->breakpoint_dma);
+
+
+ s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
+ if (hisi_hba->initial_fis)
+ dma_free_coherent(dev, s,
+ hisi_hba->initial_fis,
+ hisi_hba->initial_fis_dma);
+
+ s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint) * 2;
+ if (hisi_hba->sata_breakpoint)
+ dma_free_coherent(dev, s,
+ hisi_hba->sata_breakpoint,
+ hisi_hba->sata_breakpoint_dma);
+
+}

static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
const struct hisi_sas_hw *hw)
@@ -188,8 +241,10 @@ static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
if (IS_ERR(hisi_hba->ctrl))
goto err_out;

- if (hisi_sas_alloc(hisi_hba, shost))
+ if (hisi_sas_alloc(hisi_hba, shost)) {
+ hisi_sas_free(hisi_hba);
goto err_out;
+ }

return shost;
err_out:
@@ -270,6 +325,20 @@ err_out_ha:
}
EXPORT_SYMBOL_GPL(hisi_sas_probe);

+int hisi_sas_remove(struct platform_device *pdev)
+{
+ struct sas_ha_struct *sha = platform_get_drvdata(pdev);
+ struct hisi_hba *hisi_hba = sha->lldd_ha;
+
+ scsi_remove_host(sha->core.shost);
+ sas_unregister_ha(sha);
+ sas_remove_host(sha->core.shost);
+
+ hisi_sas_free(hisi_hba);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(hisi_sas_remove);
+
static __init int hisi_sas_init(void)
{
pr_info("hisi_sas: driver version %s\n", DRV_VERSION);
--
1.9.1


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