scsi: fdomain: Add PCMCIA support

Add PCMCIA card support to Future Domain SCSI driver.

Tested with IBM SCSI PCMCIA Adapter 40G1890.

Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

4 files changed, 111 insertions, 2 deletions

diff --git a/drivers/scsi/fdomain.c b/drivers/scsi/fdomain.c
index 297ccc799436..b5e66971b6d9 100644
--- a/drivers/scsi/fdomain.c
+++ b/drivers/scsi/fdomain.c
@@ -510,6 +510,7 @@ struct Scsi_Host *fdomain_create(int base, int irq, int this_id,
         static const char * const chip_names[] = {
                 "Unknown", "TMC-1800", "TMC-18C50", "TMC-18C30"
         };
+        unsigned long irq_flags = 0;
 
         chip = fdomain_identify(base);
         if (!chip)
@@ -541,8 +542,10 @@ struct Scsi_Host *fdomain_create(int base, int irq, int this_id,
         fd->chip = chip;
         INIT_WORK(&fd->work, fdomain_work);
 
-        if (request_irq(irq, fdomain_irq, dev_is_pci(dev) ? IRQF_SHARED : 0,
-                          "fdomain", fd))
+        if (dev_is_pci(dev) || !strcmp(dev->bus->name, "pcmcia"))
+                irq_flags = IRQF_SHARED;
+
+        if (request_irq(irq, fdomain_irq, irq_flags, "fdomain", fd))
                 goto fail_put;
 
         shost_printk(KERN_INFO, sh, "%s chip at 0x%x irq %d SCSI ID %d\n",
diff --git a/drivers/scsi/pcmcia/Kconfig b/drivers/scsi/pcmcia/Kconfig
index 2d435f105b16..169d93f90a30 100644
--- a/drivers/scsi/pcmcia/Kconfig
+++ b/drivers/scsi/pcmcia/Kconfig
@@ -19,6 +19,16 @@ config PCMCIA_AHA152X
           To compile this driver as a module, choose M here: the
           module will be called aha152x_cs.
 
+config PCMCIA_FDOMAIN
+        tristate "Future Domain PCMCIA support"
+        select SCSI_FDOMAIN
+        help
+          Say Y here if you intend to attach this type of PCMCIA SCSI host
+          adapter to your computer.
+
+          To compile this driver as a module, choose M here: the
+          module will be called fdomain_cs.
+
 config PCMCIA_NINJA_SCSI
         tristate "NinjaSCSI-3 / NinjaSCSI-32Bi (16bit) PCMCIA support"
         depends on !64BIT
diff --git a/drivers/scsi/pcmcia/Makefile b/drivers/scsi/pcmcia/Makefile
index a5a24dd44e7e..02f5b44a2685 100644
--- a/drivers/scsi/pcmcia/Makefile
+++ b/drivers/scsi/pcmcia/Makefile
@@ -4,6 +4,7 @@ ccflags-y		:= -I $(srctree)/drivers/scsi
 
 # 16-bit client drivers
 obj-$(CONFIG_PCMCIA_QLOGIC)     += qlogic_cs.o
+obj-$(CONFIG_PCMCIA_FDOMAIN)    += fdomain_cs.o
 obj-$(CONFIG_PCMCIA_AHA152X)    += aha152x_cs.o
 obj-$(CONFIG_PCMCIA_NINJA_SCSI) += nsp_cs.o
 obj-$(CONFIG_PCMCIA_SYM53C500)  += sym53c500_cs.o
diff --git a/drivers/scsi/pcmcia/fdomain_cs.c b/drivers/scsi/pcmcia/fdomain_cs.c
new file mode 100644
index 000000000000..e42acf314d06
--- /dev/null
+++ b/drivers/scsi/pcmcia/fdomain_cs.c
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MPL-1.1)
+/*
+ * Driver for Future Domain-compatible PCMCIA SCSI cards
+ * Copyright 2019 Ondrej Zary
+ *
+ * The initial developer of the original code is David A. Hinds
+ * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
+ * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <scsi/scsi_host.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+#include "fdomain.h"
+
+MODULE_AUTHOR("Ondrej Zary, David Hinds");
+MODULE_DESCRIPTION("Future Domain PCMCIA SCSI driver");
+MODULE_LICENSE("Dual MPL/GPL");
+
+static int fdomain_config_check(struct pcmcia_device *p_dev, void *priv_data)
+{
+        p_dev->io_lines = 10;
+        p_dev->resource[0]->end = FDOMAIN_REGION_SIZE;
+        p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
+        p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
+        return pcmcia_request_io(p_dev);
+}
+
+static int fdomain_probe(struct pcmcia_device *link)
+{
+        int ret;
+        struct Scsi_Host *sh;
+
+        link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
+        link->config_regs = PRESENT_OPTION;
+
+        ret = pcmcia_loop_config(link, fdomain_config_check, NULL);
+        if (ret)
+                return ret;
+
+        ret = pcmcia_enable_device(link);
+        if (ret)
+                goto fail_disable;
+
+        if (!request_region(link->resource[0]->start, FDOMAIN_REGION_SIZE,
+                            "fdomain_cs"))
+                goto fail_disable;
+
+        sh = fdomain_create(link->resource[0]->start, link->irq, 7, &link->dev);
+        if (!sh) {
+                dev_err(&link->dev, "Controller initialization failed");
+                ret = -ENODEV;
+                goto fail_release;
+        }
+
+        link->priv = sh;
+
+        return 0;
+
+fail_release:
+        release_region(link->resource[0]->start, FDOMAIN_REGION_SIZE);
+fail_disable:
+        pcmcia_disable_device(link);
+        return ret;
+}
+
+static void fdomain_remove(struct pcmcia_device *link)
+{
+        fdomain_destroy(link->priv);
+        release_region(link->resource[0]->start, FDOMAIN_REGION_SIZE);
+        pcmcia_disable_device(link);
+}
+
+static const struct pcmcia_device_id fdomain_ids[] = {
+        PCMCIA_DEVICE_PROD_ID12("IBM Corp.", "SCSI PCMCIA Card", 0xe3736c88,
+                                0x859cad20),
+        PCMCIA_DEVICE_PROD_ID1("SCSI PCMCIA Adapter Card", 0x8dacb57e),
+        PCMCIA_DEVICE_PROD_ID12(" SIMPLE TECHNOLOGY Corporation",
+                                "SCSI PCMCIA Credit Card Controller",
+                                0x182bdafe, 0xc80d106f),
+        PCMCIA_DEVICE_NULL,
+};
+MODULE_DEVICE_TABLE(pcmcia, fdomain_ids);
+
+static struct pcmcia_driver fdomain_cs_driver = {
+        .owner          = THIS_MODULE,
+        .name           = "fdomain_cs",
+        .probe          = fdomain_probe,
+        .remove         = fdomain_remove,
+        .id_table       = fdomain_ids,
+};
+
+module_pcmcia_driver(fdomain_cs_driver);