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hisi_sas: Allocate memories and create pools
Allocate DMA and non-DMA memories for the controller. Also create DMA pools. These include: - Delivery queues - Completion queues - Command status buffer - Command table - ITCT (For device context) - Host slot info - IO status - Breakpoint - host slot indexing - SG data - FIS - interrupts names Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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c799d6bd8f
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6be6de1889
2 changed files with 124 additions and 0 deletions
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@ -24,10 +24,17 @@
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#define DRV_VERSION "v1.0"
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#define HISI_SAS_MAX_PHYS 9
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#define HISI_SAS_MAX_QUEUES 32
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#define HISI_SAS_QUEUE_SLOTS 512
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#define HISI_SAS_MAX_ITCT_ENTRIES 4096
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#define HISI_SAS_MAX_DEVICES HISI_SAS_MAX_ITCT_ENTRIES
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#define HISI_SAS_COMMAND_ENTRIES 8192
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#define HISI_SAS_STATUS_BUF_SZ \
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(sizeof(struct hisi_sas_err_record) + 1024)
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#define HISI_SAS_COMMAND_TABLE_SZ \
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(((sizeof(union hisi_sas_command_table)+3)/4)*4)
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#define HISI_SAS_NAME_LEN 32
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struct hisi_sas_phy {
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@ -38,7 +45,11 @@ struct hisi_sas_port {
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struct asd_sas_port sas_port;
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};
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struct hisi_sas_slot {
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};
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struct hisi_sas_hw {
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int complete_hdr_size;
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};
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struct hisi_hba {
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@ -63,6 +74,25 @@ struct hisi_hba {
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int queue_count;
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char *int_names;
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struct dma_pool *sge_page_pool;
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struct dma_pool *command_table_pool;
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struct dma_pool *status_buffer_pool;
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struct hisi_sas_cmd_hdr *cmd_hdr[HISI_SAS_MAX_QUEUES];
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dma_addr_t cmd_hdr_dma[HISI_SAS_MAX_QUEUES];
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void *complete_hdr[HISI_SAS_MAX_QUEUES];
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dma_addr_t complete_hdr_dma[HISI_SAS_MAX_QUEUES];
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struct hisi_sas_initial_fis *initial_fis;
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dma_addr_t initial_fis_dma;
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struct hisi_sas_itct *itct;
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dma_addr_t itct_dma;
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struct hisi_sas_iost *iost;
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dma_addr_t iost_dma;
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struct hisi_sas_breakpoint *breakpoint;
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dma_addr_t breakpoint_dma;
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struct hisi_sas_breakpoint *sata_breakpoint;
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dma_addr_t sata_breakpoint_dma;
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struct hisi_sas_slot *slot_info;
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const struct hisi_sas_hw *hw; /* Low level hw interface */
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};
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@ -36,6 +36,97 @@ static struct scsi_host_template hisi_sas_sht = {
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static struct sas_domain_function_template hisi_sas_transport_ops = {
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};
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static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost)
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{
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int i, s;
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struct platform_device *pdev = hisi_hba->pdev;
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struct device *dev = &pdev->dev;
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for (i = 0; i < hisi_hba->queue_count; i++) {
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/* Delivery queue */
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s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
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hisi_hba->cmd_hdr[i] = dma_alloc_coherent(dev, s,
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&hisi_hba->cmd_hdr_dma[i], GFP_KERNEL);
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if (!hisi_hba->cmd_hdr[i])
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goto err_out;
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memset(hisi_hba->cmd_hdr[i], 0, s);
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/* Completion queue */
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s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
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hisi_hba->complete_hdr[i] = dma_alloc_coherent(dev, s,
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&hisi_hba->complete_hdr_dma[i], GFP_KERNEL);
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if (!hisi_hba->complete_hdr[i])
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goto err_out;
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memset(hisi_hba->complete_hdr[i], 0, s);
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}
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s = HISI_SAS_STATUS_BUF_SZ;
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hisi_hba->status_buffer_pool = dma_pool_create("status_buffer",
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dev, s, 16, 0);
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if (!hisi_hba->status_buffer_pool)
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goto err_out;
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s = HISI_SAS_COMMAND_TABLE_SZ;
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hisi_hba->command_table_pool = dma_pool_create("command_table",
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dev, s, 16, 0);
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if (!hisi_hba->command_table_pool)
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goto err_out;
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s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
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hisi_hba->itct = dma_alloc_coherent(dev, s, &hisi_hba->itct_dma,
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GFP_KERNEL);
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if (!hisi_hba->itct)
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goto err_out;
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memset(hisi_hba->itct, 0, s);
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hisi_hba->slot_info = devm_kcalloc(dev, HISI_SAS_COMMAND_ENTRIES,
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sizeof(struct hisi_sas_slot),
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GFP_KERNEL);
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if (!hisi_hba->slot_info)
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goto err_out;
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s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_iost);
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hisi_hba->iost = dma_alloc_coherent(dev, s, &hisi_hba->iost_dma,
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GFP_KERNEL);
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if (!hisi_hba->iost)
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goto err_out;
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memset(hisi_hba->iost, 0, s);
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s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint);
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hisi_hba->breakpoint = dma_alloc_coherent(dev, s,
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&hisi_hba->breakpoint_dma, GFP_KERNEL);
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if (!hisi_hba->breakpoint)
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goto err_out;
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memset(hisi_hba->breakpoint, 0, s);
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hisi_hba->sge_page_pool = dma_pool_create("status_sge", dev,
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sizeof(struct hisi_sas_sge_page), 16, 0);
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if (!hisi_hba->sge_page_pool)
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goto err_out;
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s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
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hisi_hba->initial_fis = dma_alloc_coherent(dev, s,
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&hisi_hba->initial_fis_dma, GFP_KERNEL);
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if (!hisi_hba->initial_fis)
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goto err_out;
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memset(hisi_hba->initial_fis, 0, s);
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s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint) * 2;
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hisi_hba->sata_breakpoint = dma_alloc_coherent(dev, s,
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&hisi_hba->sata_breakpoint_dma, GFP_KERNEL);
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if (!hisi_hba->sata_breakpoint)
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goto err_out;
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memset(hisi_hba->sata_breakpoint, 0, s);
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return 0;
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err_out:
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return -ENOMEM;
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}
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static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
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const struct hisi_sas_hw *hw)
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{
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@ -97,6 +188,9 @@ static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
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if (IS_ERR(hisi_hba->ctrl))
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goto err_out;
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if (hisi_sas_alloc(hisi_hba, shost))
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goto err_out;
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return shost;
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err_out:
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dev_err(dev, "shost alloc failed\n");
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