From 68046d5003e7b7b4083cdf5dfc2823b7bb0e40ea Mon Sep 17 00:00:00 2001
From: Ondrej Zary <linux@zary.sk>
Date: Tue, 14 May 2019 19:23:08 +0200
Subject: [PATCH] scsi: fdomain: Resurrect driver - PCI support

Future Domain TMC-3260/AHA-2920A PCI card support.

Tested on Adaptec AHA-2920A PCI card.

Signed-off-by: Ondrej Zary <linux@zary.sk>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---
 drivers/scsi/Kconfig       | 17 ++++++++++
 drivers/scsi/Makefile      |  1 +
 drivers/scsi/fdomain_pci.c | 68 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 86 insertions(+)
 create mode 100644 drivers/scsi/fdomain_pci.c

diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 213c5df4d591..b66c624affb0 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -645,6 +645,23 @@ config SCSI_FDOMAIN
 	tristate
 	depends on SCSI
 
+config SCSI_FDOMAIN_PCI
+	tristate "Future Domain TMC-3260/AHA-2920A PCI SCSI support"
+	depends on PCI && SCSI
+	select SCSI_FDOMAIN
+	help
+	  This is support for Future Domain's PCI SCSI host adapters (TMC-3260)
+	  and other adapters with PCI bus based on the Future Domain chipsets
+	  (Adaptec AHA-2920A).
+
+	  NOTE: Newer Adaptec AHA-2920C boards use the Adaptec AIC-7850 chip
+	  and should use the aic7xxx driver ("Adaptec AIC7xxx chipset SCSI
+	  controller support"). This Future Domain driver works with the older
+	  Adaptec AHA-2920A boards with a Future Domain chip on them.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called fdomain_pci.
+
 config SCSI_GDTH
 	tristate "Intel/ICP (former GDT SCSI Disk Array) RAID Controller support"
 	depends on PCI && SCSI
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 9fecb50fd213..f2cea7032419 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -77,6 +77,7 @@ obj-$(CONFIG_SCSI_PM8001)	+= pm8001/
 obj-$(CONFIG_SCSI_ISCI)		+= isci/
 obj-$(CONFIG_SCSI_IPS)		+= ips.o
 obj-$(CONFIG_SCSI_FDOMAIN)	+= fdomain.o
+obj-$(CONFIG_SCSI_FDOMAIN_PCI)	+= fdomain_pci.o
 obj-$(CONFIG_SCSI_GENERIC_NCR5380) += g_NCR5380.o
 obj-$(CONFIG_SCSI_QLOGIC_FAS)	+= qlogicfas408.o	qlogicfas.o
 obj-$(CONFIG_PCMCIA_QLOGIC)	+= qlogicfas408.o
diff --git a/drivers/scsi/fdomain_pci.c b/drivers/scsi/fdomain_pci.c
new file mode 100644
index 000000000000..3e05ce7b89e5
--- /dev/null
+++ b/drivers/scsi/fdomain_pci.c
@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include "fdomain.h"
+
+static int fdomain_pci_probe(struct pci_dev *pdev,
+			     const struct pci_device_id *d)
+{
+	int err;
+	struct Scsi_Host *sh;
+
+	err = pci_enable_device(pdev);
+	if (err)
+		goto fail;
+
+	err = pci_request_regions(pdev, "fdomain_pci");
+	if (err)
+		goto disable_device;
+
+	err = -ENODEV;
+	if (pci_resource_len(pdev, 0) == 0)
+		goto release_region;
+
+	sh = fdomain_create(pci_resource_start(pdev, 0), pdev->irq, 7,
+			    &pdev->dev);
+	if (!sh)
+		goto release_region;
+
+	pci_set_drvdata(pdev, sh);
+	return 0;
+
+release_region:
+	pci_release_regions(pdev);
+disable_device:
+	pci_disable_device(pdev);
+fail:
+	return err;
+}
+
+static void fdomain_pci_remove(struct pci_dev *pdev)
+{
+	struct Scsi_Host *sh = pci_get_drvdata(pdev);
+
+	fdomain_destroy(sh);
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+}
+
+static struct pci_device_id fdomain_pci_table[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70) },
+	{}
+};
+MODULE_DEVICE_TABLE(pci, fdomain_pci_table);
+
+static struct pci_driver fdomain_pci_driver = {
+	.name		= "fdomain_pci",
+	.id_table	= fdomain_pci_table,
+	.probe		= fdomain_pci_probe,
+	.remove		= fdomain_pci_remove,
+	.driver.pm	= FDOMAIN_PM_OPS,
+};
+
+module_pci_driver(fdomain_pci_driver);
+
+MODULE_AUTHOR("Ondrej Zary, Rickard E. Faith");
+MODULE_DESCRIPTION("Future Domain TMC-3260 PCI SCSI driver");
+MODULE_LICENSE("GPL");