korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-03 00:54:09 +08:00
Code Issues Packages Projects Releases Wiki Activity

scsi: g_NCR5380: Stop using scsi_module.c

Browse Source 
Convert g_NCR5380 to use scsi_add_host instead of scsi_module.c Use
pnp_driver and isa_driver to manage cards.

In order to support multiple cards, new module parameter format is
introduced. The old parameters are kept for compatibility.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Acked-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Ondrej Zary 2016-09-27 21:00:25 +02:00 committed by Martin K. Petersen
parent d91f5afe59
commit a8cfbcaec0
3 changed files with 215 additions and 152 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
Documentation/scsi/g_NCR5380.txt
View File

@ -28,6 +28,16 @@ time. More info to come in the future.
This driver works as a module.
When included as a module, parameters can be passed on the insmod/modprobe
command line:
irq=xx[,...] the interrupt(s)
base=xx[,...] the port or base address(es) (for port or memory mapped, resp.)
card=xx[,...] card type(s):
0 = NCR5380,
1 = NCR53C400,
2 = NCR53C400A,
3 = Domex Technology Corp 3181E (DTC3181E)
4 = Hewlett Packard C2502
These old-style parameters can support only one card:
ncr_irq=xx the interrupt
ncr_addr=xx the port or base address (for port or memory
mapped, resp.)
@ -36,11 +46,19 @@ command line:
ncr_53c400a=1 to set up for a NCR53C400A board
dtc_3181e=1 to set up for a Domex Technology Corp 3181E board
hp_c2502=1 to set up for a Hewlett Packard C2502 board
e.g.
modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1
OLD: modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1
NEW: modprobe g_NCR5380 irq=5 base=0x350 card=0
for a port mapped NCR5380 board or
modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1
for a memory mapped NCR53C400 board with interrupts disabled.
OLD: modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1
NEW: modprobe g_NCR5380 irq=255 base=0xc8000 card=1
for a memory mapped NCR53C400 board with interrupts disabled or
NEW: modprobe g_NCR5380 irq=0,7 base=0x240,0x300 card=3,4
for two cards: DTC3181 (in non-PnP mode) at 0x240 with no IRQ
and HP C2502 at 0x300 with IRQ 7
(255 should be specified for no or DMA interrupt, 254 to autoprobe for an
IRQ line if overridden on the command line.)

335
drivers/scsi/g_NCR5380.c
View File

@ -30,24 +30,41 @@
#include "NCR5380.h"
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/isapnp.h>
#include <linux/isa.h>
#include <linux/pnp.h>
#include <linux/interrupt.h>
#define MAX_CARDS 8
/* old-style parameters for compatibility */
static int ncr_irq;
static int ncr_dma;
static int ncr_addr;
static int ncr_5380;
static int ncr_53c400;
static int ncr_53c400a;
static int dtc_3181e;
static int hp_c2502;
module_param(ncr_irq, int, 0);
module_param(ncr_addr, int, 0);
module_param(ncr_5380, int, 0);
module_param(ncr_53c400, int, 0);
module_param(ncr_53c400a, int, 0);
module_param(dtc_3181e, int, 0);
module_param(hp_c2502, int, 0);
static struct card {
NCR5380_map_type NCR5380_map_name;
int irq;
int dma;
int board; /* Use NCR53c400, Ricoh, etc. extensions ? */
} card;
static int irq[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
module_param_array(irq, int, NULL, 0);
MODULE_PARM_DESC(irq, "IRQ number(s)");
static int base[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
module_param_array(base, int, NULL, 0);
MODULE_PARM_DESC(base, "base address(es)");
static int card[] = { -1, -1, -1, -1, -1, -1, -1, -1 };
module_param_array(card, int, NULL, 0);
MODULE_PARM_DESC(card, "card type (0=NCR5380, 1=NCR53C400, 2=NCR53C400A, 3=DTC3181E, 4=HP C2502)");
MODULE_LICENSE("GPL");
#ifndef SCSI_G_NCR5380_MEM
/*
@ -73,17 +90,8 @@ static void magic_configure(int idx, u8 irq, u8 magic[])
}
#endif
/**
* generic_NCR5380_detect - look for NCR5380 controllers
* @tpnt: the scsi template
*
* Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E
* and DTC436(ISAPnP) controllers.
*
* Locks: none
*/
static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
static int generic_NCR5380_init_one(struct scsi_host_template *tpnt,
struct device *pdev, int base, int irq, int board)
{
unsigned int *ports;
u8 *magic = NULL;
@ -92,80 +100,29 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
int port_idx = -1;
unsigned long region_size;
#endif
static unsigned int __initdata ncr_53c400a_ports[] = {
static unsigned int ncr_53c400a_ports[] = {
0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0
};
static unsigned int __initdata dtc_3181e_ports[] = {
static unsigned int dtc_3181e_ports[] = {
0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0
};
static u8 ncr_53c400a_magic[] __initdata = { /* 53C400A & DTC436 */
static u8 ncr_53c400a_magic[] = { /* 53C400A & DTC436 */
0x59, 0xb9, 0xc5, 0xae, 0xa6
};
static u8 hp_c2502_magic[] __initdata = { /* HP C2502 */
static u8 hp_c2502_magic[] = { /* HP C2502 */
0x0f, 0x22, 0xf0, 0x20, 0x80
};
int flags;
int flags, ret;
struct Scsi_Host *instance;
struct NCR5380_hostdata *hostdata;
#ifdef SCSI_G_NCR5380_MEM
unsigned long base;
void __iomem *iomem;
resource_size_t iomem_size;
#endif
if (ncr_irq)
card.irq = ncr_irq;
if (ncr_dma)
card.dma = ncr_dma;
if (ncr_addr)
card.NCR5380_map_name = (NCR5380_map_type) ncr_addr;
if (ncr_5380)
card.board = BOARD_NCR5380;
else if (ncr_53c400)
card.board = BOARD_NCR53C400;
else if (ncr_53c400a)
card.board = BOARD_NCR53C400A;
else if (dtc_3181e)
card.board = BOARD_DTC3181E;
else if (hp_c2502)
card.board = BOARD_HP_C2502;
#ifndef SCSI_G_NCR5380_MEM
if (isapnp_present()) {
struct pnp_dev *dev = NULL;
while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) {
if (pnp_device_attach(dev) < 0)
continue;
if (pnp_activate_dev(dev) < 0) {
printk(KERN_ERR "dtc436e probe: activate failed\n");
pnp_device_detach(dev);
continue;
}
if (!pnp_port_valid(dev, 0)) {
printk(KERN_ERR "dtc436e probe: no valid port\n");
pnp_device_detach(dev);
continue;
}
if (pnp_irq_valid(dev, 0))
card.irq = pnp_irq(dev, 0);
else
card.irq = NO_IRQ;
if (pnp_dma_valid(dev, 0))
card.dma = pnp_dma(dev, 0);
else
card.dma = DMA_NONE;
card.NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0);
card.board = BOARD_DTC3181E;
break;
}
}
#endif
if (!(card.NCR5380_map_name))
return 0;
ports = NULL;
flags = 0;
switch (card.board) {
switch (board) {
case BOARD_NCR5380:
flags = FLAG_NO_PSEUDO_DMA | FLAG_DMA_FIXUP;
break;
@ -191,17 +148,20 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
magic_configure(-1, 0, magic);
region_size = 16;
if (card.NCR5380_map_name != PORT_AUTO)
if (base)
for (i = 0; ports[i]; i++) {
if (!request_region(ports[i], region_size, "ncr53c80"))
continue;
if (card.NCR5380_map_name == ports[i])
if (base == ports[i]) { /* index found */
if (!request_region(ports[i],
region_size,
"ncr53c80"))
return -EBUSY;
break;
release_region(ports[i], region_size);
} else
}
}
else
for (i = 0; ports[i]; i++) {
if (!request_region(ports[i], region_size, "ncr53c80"))
if (!request_region(ports[i], region_size,
"ncr53c80"))
continue;
if (inb(ports[i]) == 0xff)
break;
@ -211,39 +171,41 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
/* At this point we have our region reserved */
magic_configure(i, 0, magic); /* no IRQ yet */
outb(0xc0, ports[i] + 9);
if (inb(ports[i] + 9) != 0x80)
return 0;
card.NCR5380_map_name = ports[i];
if (inb(ports[i] + 9) != 0x80) {
ret = -ENODEV;
goto out_release;
}
base = ports[i];
port_idx = i;
} else
return 0;
return -EINVAL;
}
else
{
/* Not a 53C400A style setup - just grab */
/* NCR5380 - no configuration, just grab */
region_size = 8;
if (!request_region(card.NCR5380_map_name,
region_size, "ncr5380"))
return 0;
if (!base || !request_region(base, region_size, "ncr5380"))
return -EBUSY;
}
#else
base = card.NCR5380_map_name;
iomem_size = NCR53C400_region_size;
if (!request_mem_region(base, iomem_size, "ncr5380"))
return 0;
return -EBUSY;
iomem = ioremap(base, iomem_size);
if (!iomem) {
release_mem_region(base, iomem_size);
return 0;
return -ENOMEM;
}
#endif
instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata));
if (instance == NULL)
instance = scsi_host_alloc(tpnt, sizeof(struct NCR5380_hostdata));
if (instance == NULL) {
ret = -ENOMEM;
goto out_release;
}
hostdata = shost_priv(instance);
#ifndef SCSI_G_NCR5380_MEM
instance->io_port = card.NCR5380_map_name;
instance->io_port = base;
instance->n_io_port = region_size;
hostdata->io_width = 1; /* 8-bit PDMA by default */
@ -251,7 +213,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
* On NCR53C400 boards, NCR5380 registers are mapped 8 past
* the base address.
*/
switch (card.board) {
switch (board) {
case BOARD_NCR53C400:
instance->io_port += 8;
hostdata->c400_ctl_status = 0;
@ -269,10 +231,10 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
break;
}
#else
instance->base = card.NCR5380_map_name;
instance->base = base;
hostdata->iomem = iomem;
hostdata->iomem_size = iomem_size;
switch (card.board) {
switch (board) {
case BOARD_NCR53C400:
hostdata->c400_ctl_status = 0x100;
hostdata->c400_blk_cnt = 0x101;
@ -282,14 +244,16 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
case BOARD_NCR53C400A:
case BOARD_HP_C2502:
pr_err(DRV_MODULE_NAME ": unknown register offsets\n");
ret = -EINVAL;
goto out_unregister;
}
#endif
if (NCR5380_init(instance, flags | FLAG_LATE_DMA_SETUP))
ret = NCR5380_init(instance, flags | FLAG_LATE_DMA_SETUP);
if (ret)
goto out_unregister;
switch (card.board) {
switch (board) {
case BOARD_NCR53C400:
case BOARD_DTC3181E:
case BOARD_NCR53C400A:
@ -299,8 +263,8 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
NCR5380_maybe_reset_bus(instance);
if (card.irq != IRQ_AUTO)
instance->irq = card.irq;
if (irq != IRQ_AUTO)
instance->irq = irq;
else
instance->irq = NCR5380_probe_irq(instance, 0xffff);
@ -311,7 +275,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
if (instance->irq != NO_IRQ) {
#ifndef SCSI_G_NCR5380_MEM
/* set IRQ for HP C2502 */
if (card.board == BOARD_HP_C2502)
if (board == BOARD_HP_C2502)
magic_configure(port_idx, instance->irq, magic);
#endif
if (request_irq(instance->irq, generic_NCR5380_intr,
@ -326,31 +290,32 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
}
return 1;
ret = scsi_add_host(instance, pdev);
if (ret)
goto out_free_irq;
scsi_scan_host(instance);
dev_set_drvdata(pdev, instance);
return 0;
out_free_irq:
if (instance->irq != NO_IRQ)
free_irq(instance->irq, instance);
NCR5380_exit(instance);
out_unregister:
scsi_unregister(instance);
scsi_host_put(instance);
out_release:
#ifndef SCSI_G_NCR5380_MEM
release_region(card.NCR5380_map_name, region_size);
release_region(base, region_size);
#else
iounmap(iomem);
release_mem_region(base, iomem_size);
#endif
return 0;
return ret;
}
/**
* generic_NCR5380_release_resources - free resources
* @instance: host adapter to clean up
*
* Free the generic interface resources from this adapter.
*
* Locks: none
*/
static int generic_NCR5380_release_resources(struct Scsi_Host *instance)
static void generic_NCR5380_release_resources(struct Scsi_Host *instance)
{
scsi_remove_host(instance);
if (instance->irq != NO_IRQ)
free_irq(instance->irq, instance);
NCR5380_exit(instance);
@ -364,7 +329,7 @@ static int generic_NCR5380_release_resources(struct Scsi_Host *instance)
release_mem_region(instance->base, hostdata->iomem_size);
}
#endif
return 0;
scsi_host_put(instance);
}
/**
@ -554,10 +519,9 @@ static int generic_NCR5380_dma_xfer_len(struct Scsi_Host *instance,
#include "NCR5380.c"
static struct scsi_host_template driver_template = {
.module = THIS_MODULE,
.proc_name = DRV_MODULE_NAME,
.name = "Generic NCR5380/NCR53C400 SCSI",
.detect = generic_NCR5380_detect,
.release = generic_NCR5380_release_resources,
.info = generic_NCR5380_info,
.queuecommand = generic_NCR5380_queue_command,
.eh_abort_handler = generic_NCR5380_abort,
@ -571,26 +535,115 @@ static struct scsi_host_template driver_template = {
.max_sectors = 128,
};
#include "scsi_module.c"
module_param(ncr_irq, int, 0);
module_param(ncr_dma, int, 0);
module_param(ncr_addr, int, 0);
module_param(ncr_5380, int, 0);
module_param(ncr_53c400, int, 0);
module_param(ncr_53c400a, int, 0);
module_param(dtc_3181e, int, 0);
module_param(hp_c2502, int, 0);
MODULE_LICENSE("GPL");
static int generic_NCR5380_isa_match(struct device *pdev, unsigned int ndev)
{
int ret = generic_NCR5380_init_one(&driver_template, pdev, base[ndev],
irq[ndev], card[ndev]);
if (ret) {
if (base[ndev])
printk(KERN_WARNING "Card not found at address 0x%03x\n",
base[ndev]);
return 0;
}
#if !defined(SCSI_G_NCR5380_MEM) && defined(MODULE)
static struct isapnp_device_id id_table[] = {
{
ISAPNP_ANY_ID, ISAPNP_ANY_ID,
ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e),
0},
{0}
return 1;
}
static int generic_NCR5380_isa_remove(struct device *pdev,
unsigned int ndev)
{
generic_NCR5380_release_resources(dev_get_drvdata(pdev));
dev_set_drvdata(pdev, NULL);
return 0;
}
static struct isa_driver generic_NCR5380_isa_driver = {
.match = generic_NCR5380_isa_match,
.remove = generic_NCR5380_isa_remove,
.driver = {
.name = DRV_MODULE_NAME
},
};
MODULE_DEVICE_TABLE(isapnp, id_table);
#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP)
static struct pnp_device_id generic_NCR5380_pnp_ids[] = {
{ .id = "DTC436e", .driver_data = BOARD_DTC3181E },
{ .id = "" }
};
MODULE_DEVICE_TABLE(pnp, generic_NCR5380_pnp_ids);
static int generic_NCR5380_pnp_probe(struct pnp_dev *pdev,
const struct pnp_device_id *id)
{
int base, irq;
if (pnp_activate_dev(pdev) < 0)
return -EBUSY;
base = pnp_port_start(pdev, 0);
irq = pnp_irq(pdev, 0);
return generic_NCR5380_init_one(&driver_template, &pdev->dev, base, irq,
id->driver_data);
}
static void generic_NCR5380_pnp_remove(struct pnp_dev *pdev)
{
generic_NCR5380_release_resources(pnp_get_drvdata(pdev));
pnp_set_drvdata(pdev, NULL);
}
static struct pnp_driver generic_NCR5380_pnp_driver = {
.name = DRV_MODULE_NAME,
.id_table = generic_NCR5380_pnp_ids,
.probe = generic_NCR5380_pnp_probe,
.remove = generic_NCR5380_pnp_remove,
};
#endif /* !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) */
static int pnp_registered, isa_registered;
static int __init generic_NCR5380_init(void)
{
int ret = 0;
/* compatibility with old-style parameters */
if (irq[0] == 0 && base[0] == 0 && card[0] == -1) {
irq[0] = ncr_irq;
base[0] = ncr_addr;
if (ncr_5380)
card[0] = BOARD_NCR5380;
if (ncr_53c400)
card[0] = BOARD_NCR53C400;
if (ncr_53c400a)
card[0] = BOARD_NCR53C400A;
if (dtc_3181e)
card[0] = BOARD_DTC3181E;
if (hp_c2502)
card[0] = BOARD_HP_C2502;
}
#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP)
if (!pnp_register_driver(&generic_NCR5380_pnp_driver))
pnp_registered = 1;
#endif
ret = isa_register_driver(&generic_NCR5380_isa_driver, MAX_CARDS);
if (!ret)
isa_registered = 1;
return (pnp_registered || isa_registered) ? 0 : ret;
}
static void __exit generic_NCR5380_exit(void)
{
#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP)
if (pnp_registered)
pnp_unregister_driver(&generic_NCR5380_pnp_driver);
#endif
if (isa_registered)
isa_unregister_driver(&generic_NCR5380_isa_driver);
}
module_init(generic_NCR5380_init);
module_exit(generic_NCR5380_exit);

8
drivers/scsi/g_NCR5380.h
View File

@ -14,15 +14,9 @@
#ifndef GENERIC_NCR5380_H
#define GENERIC_NCR5380_H
#define __STRVAL(x) #x
#define STRVAL(x) __STRVAL(x)
#ifndef SCSI_G_NCR5380_MEM
#define DRV_MODULE_NAME "g_NCR5380"
#define NCR5380_map_type int
#define NCR5380_map_name port
#define NCR5380_read(reg) \
inb(instance->io_port + (reg))
#define NCR5380_write(reg, value) \
@ -38,8 +32,6 @@
/* therefore SCSI_G_NCR5380_MEM */
#define DRV_MODULE_NAME "g_NCR5380_mmio"
#define NCR5380_map_type unsigned long
#define NCR5380_map_name base
#define NCR53C400_mem_base 0x3880
#define NCR53C400_host_buffer 0x3900
#define NCR53C400_region_size 0x3a00