scsi: hisi_sas: add skeleton v3 hw driver

Add skeleton driver for v3 hw in hisi_sas_v3_hw.c

File hisi_sas_v3_hw.c will serve 2 purposes:
- probing and initialisation of the controller based on pci device
- hw layer for v3-based controllers

The controller design is quite similar to v2 hw in hip07.

However key differences include:
-All v2 hw bugs are fixed (hopefully), so workarounds are not required
-support for device deregistration
-some interrupt modifications
-configurable max device support

Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/hisi_sas/Kconfig b/drivers/scsi/hisi_sas/Kconfig
index 374a329b91fcaaa29dbe062b377d3977288bc6e7..d42f29a5eb65046d7086cc79a08eb53495928f11 100644 (file)
--- a/drivers/scsi/hisi_sas/Kconfig
+++ b/drivers/scsi/hisi_sas/Kconfig
@@ -6,4 +6,12 @@ config SCSI_HISI_SAS
        select BLK_DEV_INTEGRITY
        depends on ATA
        help
-               This driver supports HiSilicon's SAS HBA
+               This driver supports HiSilicon's SAS HBA, including support based
+               on platform device
+
+config SCSI_HISI_SAS_PCI
+       tristate "HiSilicon SAS on PCI bus"
+       depends on SCSI_HISI_SAS
+       depends on PCI
+       help
+               This driver supports HiSilicon's SAS HBA based on PCI device

diff --git a/drivers/scsi/hisi_sas/Makefile b/drivers/scsi/hisi_sas/Makefile
index c6d3a1b5fcb907298d6c1a1d2f597ca2d19d7695..24623f228510bd6d46cfd18803de79ca8fc1588d 100644 (file)
--- a/drivers/scsi/hisi_sas/Makefile
+++ b/drivers/scsi/hisi_sas/Makefile
@@ -1,2 +1,3 @@
 obj-$(CONFIG_SCSI_HISI_SAS)            += hisi_sas_main.o
 obj-$(CONFIG_SCSI_HISI_SAS)            += hisi_sas_v1_hw.o hisi_sas_v2_hw.o
+obj-$(CONFIG_SCSI_HISI_SAS_PCI)                += hisi_sas_v3_hw.o

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
new file mode 100644 (file)
index 0000000..cf72577
--- /dev/null
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2017 Hisilicon Limited.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include "hisi_sas.h"
+#define DRV_NAME "hisi_sas_v3_hw"
+
+static int
+hisi_sas_v3_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+       return 0;
+}
+
+static void hisi_sas_v3_remove(struct pci_dev *pdev)
+{
+}
+
+enum {
+       /* instances of the controller */
+       hip08,
+};
+
+static const struct pci_device_id sas_v3_pci_table[] = {
+       { PCI_VDEVICE(HUAWEI, 0xa230), hip08 },
+       {}
+};
+
+static struct pci_driver sas_v3_pci_driver = {
+       .name           = DRV_NAME,
+       .id_table       = sas_v3_pci_table,
+       .probe          = hisi_sas_v3_probe,
+       .remove         = hisi_sas_v3_remove,
+};
+
+module_pci_driver(sas_v3_pci_driver);
+
+MODULE_VERSION(DRV_VERSION);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
+MODULE_DESCRIPTION("HISILICON SAS controller v3 hw driver based on pci device");
+MODULE_ALIAS("platform:" DRV_NAME);