[PATCH 07/25] scsi: hisi_sas: add ioremap for device HW

[John Garry]

This includes registers for core SAS controllers
and also SAS control registers.

Signed-off-by: John Garry <john.ga...@huawei.com>
---
 drivers/scsi/hisi_sas/hisi_sas.h      |  2 ++
 drivers/scsi/hisi_sas/hisi_sas_init.c | 25 +++++++++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index 929c513..5f72d98 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -69,6 +69,8 @@ struct hisi_hba {
 
        struct platform_device *pdev;
 
+       void __iomem *regs;
+       void __iomem *ctrl_regs;
 
        u8 sas_addr[SAS_ADDR_SIZE];
 
diff --git a/drivers/scsi/hisi_sas/hisi_sas_init.c 
b/drivers/scsi/hisi_sas/hisi_sas_init.c
index 38b9ed2..8f1e856 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_init.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_init.c
@@ -195,6 +195,28 @@ static void hisi_sas_free(struct hisi_hba *hisi_hba)
                                  hisi_hba->sata_breakpoint_dma);
 }
 
+int hisi_sas_ioremap(struct hisi_hba *hisi_hba)
+{
+       struct platform_device *pdev = hisi_hba->pdev;
+       struct device *dev = &pdev->dev;
+       struct resource *res;
+
+       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       hisi_hba->regs = devm_ioremap(dev,
+                                     res->start,
+                                     resource_size(res));
+       if (!hisi_hba->regs)
+               return -ENOMEM;
+
+       res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+       hisi_hba->ctrl_regs = devm_ioremap(dev,
+                                          res->start,
+                                          resource_size(res));
+       if (!hisi_hba->ctrl_regs)
+               return -ENOMEM;
+
+       return 0;
+}
 
 static const struct of_device_id sas_of_match[] = {
        { .compatible = "hisilicon,sas-controller-v1",},
@@ -241,6 +263,9 @@ static struct hisi_hba *hisi_sas_hba_alloc(
 
        hisi_hba->shost = shost;
 
+       if (hisi_sas_ioremap(hisi_hba))
+               goto err_out;
+
        if (hisi_sas_alloc(hisi_hba, shost)) {
                hisi_sas_free(hisi_hba);
                goto err_out;
-- 
1.9.1

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