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

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

Signed-off-by: John Garry <john.garry@xxxxxxxxxx>
---
 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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