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gdth.c
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gdth.c
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/************************************************************************
* Linux driver for *
* ICP vortex GmbH: GDT ISA/EISA/PCI Disk Array Controllers *
* Intel Corporation: Storage RAID Controllers *
* *
* gdth.c *
* Copyright (C) 1995-06 ICP vortex GmbH, Achim Leubner *
* Copyright (C) 2002-04 Intel Corporation *
* Copyright (C) 2003-06 Adaptec Inc. *
* <[email protected]> *
* *
* Additions/Fixes: *
* Boji Tony Kannanthanam <[email protected]> *
* Johannes Dinner <[email protected]> *
* *
* 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. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this kernel; if not, write to the Free Software *
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
* *
* Linux kernel 2.6.x supported *
* *
************************************************************************/
/* All GDT Disk Array Controllers are fully supported by this driver.
* This includes the PCI/EISA/ISA SCSI Disk Array Controllers and the
* PCI Fibre Channel Disk Array Controllers. See gdth.h for a complete
* list of all controller types.
*
* If you have one or more GDT3000/3020 EISA controllers with
* controller BIOS disabled, you have to set the IRQ values with the
* command line option "gdth=irq1,irq2,...", where the irq1,irq2,... are
* the IRQ values for the EISA controllers.
*
* After the optional list of IRQ values, other possible
* command line options are:
* disable:Y disable driver
* disable:N enable driver
* reserve_mode:0 reserve no drives for the raw service
* reserve_mode:1 reserve all not init., removable drives
* reserve_mode:2 reserve all not init. drives
* reserve_list:h,b,t,l,h,b,t,l,... reserve particular drive(s) with
* h- controller no., b- channel no.,
* t- target ID, l- LUN
* reverse_scan:Y reverse scan order for PCI controllers
* reverse_scan:N scan PCI controllers like BIOS
* max_ids:x x - target ID count per channel (1..MAXID)
* rescan:Y rescan all channels/IDs
* rescan:N use all devices found until now
* hdr_channel:x x - number of virtual bus for host drives
* shared_access:Y disable driver reserve/release protocol to
* access a shared resource from several nodes,
* appropriate controller firmware required
* shared_access:N enable driver reserve/release protocol
* probe_eisa_isa:Y scan for EISA/ISA controllers
* probe_eisa_isa:N do not scan for EISA/ISA controllers
* force_dma32:Y use only 32 bit DMA mode
* force_dma32:N use 64 bit DMA mode, if supported
*
* The default values are: "gdth=disable:N,reserve_mode:1,reverse_scan:N,
* max_ids:127,rescan:N,hdr_channel:0,
* shared_access:Y,probe_eisa_isa:N,force_dma32:N".
* Here is another example: "gdth=reserve_list:0,1,2,0,0,1,3,0,rescan:Y".
*
* When loading the gdth driver as a module, the same options are available.
* You can set the IRQs with "IRQ=...". However, the syntax to specify the
* options changes slightly. You must replace all ',' between options
* with ' ' and all ':' with '=' and you must use
* '1' in place of 'Y' and '0' in place of 'N'.
*
* Default: "modprobe gdth disable=0 reserve_mode=1 reverse_scan=0
* max_ids=127 rescan=0 hdr_channel=0 shared_access=0
* probe_eisa_isa=0 force_dma32=0"
* The other example: "modprobe gdth reserve_list=0,1,2,0,0,1,3,0 rescan=1".
*/
/* The meaning of the Scsi_Pointer members in this driver is as follows:
* ptr: Chaining
* this_residual: unused
* buffer: unused
* dma_handle: unused
* buffers_residual: unused
* Status: unused
* Message: unused
* have_data_in: unused
* sent_command: unused
* phase: unused
*/
/* interrupt coalescing */
/* #define INT_COAL */
/* statistics */
#define GDTH_STATISTICS
#include <linux/module.h>
#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/in.h>
#include <linux/proc_fs.h>
#include <linux/time.h>
#include <linux/timer.h>
#include <linux/dma-mapping.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#ifdef GDTH_RTC
#include <linux/mc146818rtc.h>
#endif
#include <linux/reboot.h>
#include <asm/dma.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <linux/spinlock.h>
#include <linux/blkdev.h>
#include <linux/scatterlist.h>
#include "scsi.h"
#include <scsi/scsi_host.h>
#include "gdth.h"
static DEFINE_MUTEX(gdth_mutex);
static void gdth_delay(int milliseconds);
static void gdth_eval_mapping(u32 size, u32 *cyls, int *heads, int *secs);
static irqreturn_t gdth_interrupt(int irq, void *dev_id);
static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
int gdth_from_wait, int* pIndex);
static int gdth_sync_event(gdth_ha_str *ha, int service, u8 index,
Scsi_Cmnd *scp);
static int gdth_async_event(gdth_ha_str *ha);
static void gdth_log_event(gdth_evt_data *dvr, char *buffer);
static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 priority);
static void gdth_next(gdth_ha_str *ha);
static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 b);
static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, u16 source,
u16 idx, gdth_evt_data *evt);
static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr);
static void gdth_readapp_event(gdth_ha_str *ha, u8 application,
gdth_evt_str *estr);
static void gdth_clear_events(void);
static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
char *buffer, u16 count);
static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u16 hdrive);
static void gdth_enable_int(gdth_ha_str *ha);
static int gdth_test_busy(gdth_ha_str *ha);
static int gdth_get_cmd_index(gdth_ha_str *ha);
static void gdth_release_event(gdth_ha_str *ha);
static int gdth_wait(gdth_ha_str *ha, int index,u32 time);
static int gdth_internal_cmd(gdth_ha_str *ha, u8 service, u16 opcode,
u32 p1, u64 p2,u64 p3);
static int gdth_search_drives(gdth_ha_str *ha);
static int gdth_analyse_hdrive(gdth_ha_str *ha, u16 hdrive);
static const char *gdth_ctr_name(gdth_ha_str *ha);
static int gdth_open(struct inode *inode, struct file *filep);
static int gdth_close(struct inode *inode, struct file *filep);
static long gdth_unlocked_ioctl(struct file *filep, unsigned int cmd,
unsigned long arg);
static void gdth_flush(gdth_ha_str *ha);
static int gdth_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
struct gdth_cmndinfo *cmndinfo);
static void gdth_scsi_done(struct scsi_cmnd *scp);
#ifdef DEBUG_GDTH
static u8 DebugState = DEBUG_GDTH;
#ifdef __SERIAL__
#define MAX_SERBUF 160
static void ser_init(void);
static void ser_puts(char *str);
static void ser_putc(char c);
static int ser_printk(const char *fmt, ...);
static char strbuf[MAX_SERBUF+1];
#ifdef __COM2__
#define COM_BASE 0x2f8
#else
#define COM_BASE 0x3f8
#endif
static void ser_init()
{
unsigned port=COM_BASE;
outb(0x80,port+3);
outb(0,port+1);
/* 19200 Baud, if 9600: outb(12,port) */
outb(6, port);
outb(3,port+3);
outb(0,port+1);
/*
ser_putc('I');
ser_putc(' ');
*/
}
static void ser_puts(char *str)
{
char *ptr;
ser_init();
for (ptr=str;*ptr;++ptr)
ser_putc(*ptr);
}
static void ser_putc(char c)
{
unsigned port=COM_BASE;
while ((inb(port+5) & 0x20)==0);
outb(c,port);
if (c==0x0a)
{
while ((inb(port+5) & 0x20)==0);
outb(0x0d,port);
}
}
static int ser_printk(const char *fmt, ...)
{
va_list args;
int i;
va_start(args,fmt);
i = vsprintf(strbuf,fmt,args);
ser_puts(strbuf);
va_end(args);
return i;
}
#define TRACE(a) {if (DebugState==1) {ser_printk a;}}
#define TRACE2(a) {if (DebugState==1 || DebugState==2) {ser_printk a;}}
#define TRACE3(a) {if (DebugState!=0) {ser_printk a;}}
#else /* !__SERIAL__ */
#define TRACE(a) {if (DebugState==1) {printk a;}}
#define TRACE2(a) {if (DebugState==1 || DebugState==2) {printk a;}}
#define TRACE3(a) {if (DebugState!=0) {printk a;}}
#endif
#else /* !DEBUG */
#define TRACE(a)
#define TRACE2(a)
#define TRACE3(a)
#endif
#ifdef GDTH_STATISTICS
static u32 max_rq=0, max_index=0, max_sg=0;
#ifdef INT_COAL
static u32 max_int_coal=0;
#endif
static u32 act_ints=0, act_ios=0, act_stats=0, act_rq=0;
static struct timer_list gdth_timer;
#endif
#define PTR2USHORT(a) (u16)(unsigned long)(a)
#define GDTOFFSOF(a,b) (size_t)&(((a*)0)->b)
#define INDEX_OK(i,t) ((i)<ARRAY_SIZE(t))
#define BUS_L2P(a,b) ((b)>(a)->virt_bus ? (b-1):(b))
#ifdef CONFIG_ISA
static u8 gdth_drq_tab[4] = {5,6,7,7}; /* DRQ table */
#endif
#if defined(CONFIG_EISA) || defined(CONFIG_ISA)
static u8 gdth_irq_tab[6] = {0,10,11,12,14,0}; /* IRQ table */
#endif
static u8 gdth_polling; /* polling if TRUE */
static int gdth_ctr_count = 0; /* controller count */
static LIST_HEAD(gdth_instances); /* controller list */
static u8 gdth_write_through = FALSE; /* write through */
static gdth_evt_str ebuffer[MAX_EVENTS]; /* event buffer */
static int elastidx;
static int eoldidx;
static int major;
#define DIN 1 /* IN data direction */
#define DOU 2 /* OUT data direction */
#define DNO DIN /* no data transfer */
#define DUN DIN /* unknown data direction */
static u8 gdth_direction_tab[0x100] = {
DNO,DNO,DIN,DIN,DOU,DIN,DIN,DOU,DIN,DUN,DOU,DOU,DUN,DUN,DUN,DIN,
DNO,DIN,DIN,DOU,DIN,DOU,DNO,DNO,DOU,DNO,DIN,DNO,DIN,DOU,DNO,DUN,
DIN,DUN,DIN,DUN,DOU,DIN,DUN,DUN,DIN,DIN,DOU,DNO,DUN,DIN,DOU,DOU,
DOU,DOU,DOU,DNO,DIN,DNO,DNO,DIN,DOU,DOU,DOU,DOU,DIN,DOU,DIN,DOU,
DOU,DOU,DIN,DIN,DIN,DNO,DUN,DNO,DNO,DNO,DUN,DNO,DOU,DIN,DUN,DUN,
DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DIN,DUN,DUN,DUN,DUN,DUN,
DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,
DUN,DUN,DUN,DUN,DUN,DNO,DNO,DUN,DIN,DNO,DOU,DUN,DNO,DUN,DOU,DOU,
DOU,DOU,DOU,DNO,DUN,DIN,DOU,DIN,DIN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN
};
/* LILO and modprobe/insmod parameters */
/* IRQ list for GDT3000/3020 EISA controllers */
static int irq[MAXHA] __initdata =
{0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
/* disable driver flag */
static int disable __initdata = 0;
/* reserve flag */
static int reserve_mode = 1;
/* reserve list */
static int reserve_list[MAX_RES_ARGS] =
{0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
/* scan order for PCI controllers */
static int reverse_scan = 0;
/* virtual channel for the host drives */
static int hdr_channel = 0;
/* max. IDs per channel */
static int max_ids = MAXID;
/* rescan all IDs */
static int rescan = 0;
/* shared access */
static int shared_access = 1;
/* enable support for EISA and ISA controllers */
static int probe_eisa_isa = 0;
/* 64 bit DMA mode, support for drives > 2 TB, if force_dma32 = 0 */
static int force_dma32 = 0;
/* parameters for modprobe/insmod */
module_param_array(irq, int, NULL, 0);
module_param(disable, int, 0);
module_param(reserve_mode, int, 0);
module_param_array(reserve_list, int, NULL, 0);
module_param(reverse_scan, int, 0);
module_param(hdr_channel, int, 0);
module_param(max_ids, int, 0);
module_param(rescan, int, 0);
module_param(shared_access, int, 0);
module_param(probe_eisa_isa, int, 0);
module_param(force_dma32, int, 0);
MODULE_AUTHOR("Achim Leubner");
MODULE_LICENSE("GPL");
/* ioctl interface */
static const struct file_operations gdth_fops = {
.unlocked_ioctl = gdth_unlocked_ioctl,
.open = gdth_open,
.release = gdth_close,
.llseek = noop_llseek,
};
#include "gdth_proc.h"
#include "gdth_proc.c"
static gdth_ha_str *gdth_find_ha(int hanum)
{
gdth_ha_str *ha;
list_for_each_entry(ha, &gdth_instances, list)
if (hanum == ha->hanum)
return ha;
return NULL;
}
static struct gdth_cmndinfo *gdth_get_cmndinfo(gdth_ha_str *ha)
{
struct gdth_cmndinfo *priv = NULL;
unsigned long flags;
int i;
spin_lock_irqsave(&ha->smp_lock, flags);
for (i=0; i<GDTH_MAXCMDS; ++i) {
if (ha->cmndinfo[i].index == 0) {
priv = &ha->cmndinfo[i];
memset(priv, 0, sizeof(*priv));
priv->index = i+1;
break;
}
}
spin_unlock_irqrestore(&ha->smp_lock, flags);
return priv;
}
static void gdth_put_cmndinfo(struct gdth_cmndinfo *priv)
{
BUG_ON(!priv);
priv->index = 0;
}
static void gdth_delay(int milliseconds)
{
if (milliseconds == 0) {
udelay(1);
} else {
mdelay(milliseconds);
}
}
static void gdth_scsi_done(struct scsi_cmnd *scp)
{
struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
int internal_command = cmndinfo->internal_command;
TRACE2(("gdth_scsi_done()\n"));
gdth_put_cmndinfo(cmndinfo);
scp->host_scribble = NULL;
if (internal_command)
complete((struct completion *)scp->request);
else
scp->scsi_done(scp);
}
int __gdth_execute(struct scsi_device *sdev, gdth_cmd_str *gdtcmd, char *cmnd,
int timeout, u32 *info)
{
gdth_ha_str *ha = shost_priv(sdev->host);
Scsi_Cmnd *scp;
struct gdth_cmndinfo cmndinfo;
DECLARE_COMPLETION_ONSTACK(wait);
int rval;
scp = kzalloc(sizeof(*scp), GFP_KERNEL);
if (!scp)
return -ENOMEM;
scp->sense_buffer = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
if (!scp->sense_buffer) {
kfree(scp);
return -ENOMEM;
}
scp->device = sdev;
memset(&cmndinfo, 0, sizeof(cmndinfo));
/* use request field to save the ptr. to completion struct. */
scp->request = (struct request *)&wait;
scp->cmd_len = 12;
scp->cmnd = cmnd;
cmndinfo.priority = IOCTL_PRI;
cmndinfo.internal_cmd_str = gdtcmd;
cmndinfo.internal_command = 1;
TRACE(("__gdth_execute() cmd 0x%x\n", scp->cmnd[0]));
__gdth_queuecommand(ha, scp, &cmndinfo);
wait_for_completion(&wait);
rval = cmndinfo.status;
if (info)
*info = cmndinfo.info;
kfree(scp->sense_buffer);
kfree(scp);
return rval;
}
int gdth_execute(struct Scsi_Host *shost, gdth_cmd_str *gdtcmd, char *cmnd,
int timeout, u32 *info)
{
struct scsi_device *sdev = scsi_get_host_dev(shost);
int rval = __gdth_execute(sdev, gdtcmd, cmnd, timeout, info);
scsi_free_host_dev(sdev);
return rval;
}
static void gdth_eval_mapping(u32 size, u32 *cyls, int *heads, int *secs)
{
*cyls = size /HEADS/SECS;
if (*cyls <= MAXCYLS) {
*heads = HEADS;
*secs = SECS;
} else { /* too high for 64*32 */
*cyls = size /MEDHEADS/MEDSECS;
if (*cyls <= MAXCYLS) {
*heads = MEDHEADS;
*secs = MEDSECS;
} else { /* too high for 127*63 */
*cyls = size /BIGHEADS/BIGSECS;
*heads = BIGHEADS;
*secs = BIGSECS;
}
}
}
/* controller search and initialization functions */
#ifdef CONFIG_EISA
static int __init gdth_search_eisa(u16 eisa_adr)
{
u32 id;
TRACE(("gdth_search_eisa() adr. %x\n",eisa_adr));
id = inl(eisa_adr+ID0REG);
if (id == GDT3A_ID || id == GDT3B_ID) { /* GDT3000A or GDT3000B */
if ((inb(eisa_adr+EISAREG) & 8) == 0)
return 0; /* not EISA configured */
return 1;
}
if (id == GDT3_ID) /* GDT3000 */
return 1;
return 0;
}
#endif /* CONFIG_EISA */
#ifdef CONFIG_ISA
static int __init gdth_search_isa(u32 bios_adr)
{
void __iomem *addr;
u32 id;
TRACE(("gdth_search_isa() bios adr. %x\n",bios_adr));
if ((addr = ioremap(bios_adr+BIOS_ID_OFFS, sizeof(u32))) != NULL) {
id = readl(addr);
iounmap(addr);
if (id == GDT2_ID) /* GDT2000 */
return 1;
}
return 0;
}
#endif /* CONFIG_ISA */
#ifdef CONFIG_PCI
static bool gdth_search_vortex(u16 device)
{
if (device <= PCI_DEVICE_ID_VORTEX_GDT6555)
return true;
if (device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP &&
device <= PCI_DEVICE_ID_VORTEX_GDTMAXRP)
return true;
if (device == PCI_DEVICE_ID_VORTEX_GDTNEWRX ||
device == PCI_DEVICE_ID_VORTEX_GDTNEWRX2)
return true;
return false;
}
static int gdth_pci_probe_one(gdth_pci_str *pcistr, gdth_ha_str **ha_out);
static int gdth_pci_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent);
static void gdth_pci_remove_one(struct pci_dev *pdev);
static void gdth_remove_one(gdth_ha_str *ha);
/* Vortex only makes RAID controllers.
* We do not really want to specify all 550 ids here, so wildcard match.
*/
static const struct pci_device_id gdthtable[] = {
{ PCI_VDEVICE(VORTEX, PCI_ANY_ID) },
{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC) },
{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC_XSCALE) },
{ } /* terminate list */
};
MODULE_DEVICE_TABLE(pci, gdthtable);
static struct pci_driver gdth_pci_driver = {
.name = "gdth",
.id_table = gdthtable,
.probe = gdth_pci_init_one,
.remove = gdth_pci_remove_one,
};
static void gdth_pci_remove_one(struct pci_dev *pdev)
{
gdth_ha_str *ha = pci_get_drvdata(pdev);
list_del(&ha->list);
gdth_remove_one(ha);
pci_disable_device(pdev);
}
static int gdth_pci_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
u16 vendor = pdev->vendor;
u16 device = pdev->device;
unsigned long base0, base1, base2;
int rc;
gdth_pci_str gdth_pcistr;
gdth_ha_str *ha = NULL;
TRACE(("gdth_search_dev() cnt %d vendor %x device %x\n",
gdth_ctr_count, vendor, device));
memset(&gdth_pcistr, 0, sizeof(gdth_pcistr));
if (vendor == PCI_VENDOR_ID_VORTEX && !gdth_search_vortex(device))
return -ENODEV;
rc = pci_enable_device(pdev);
if (rc)
return rc;
if (gdth_ctr_count >= MAXHA)
return -EBUSY;
/* GDT PCI controller found, resources are already in pdev */
gdth_pcistr.pdev = pdev;
base0 = pci_resource_flags(pdev, 0);
base1 = pci_resource_flags(pdev, 1);
base2 = pci_resource_flags(pdev, 2);
if (device <= PCI_DEVICE_ID_VORTEX_GDT6000B || /* GDT6000/B */
device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP) { /* MPR */
if (!(base0 & IORESOURCE_MEM))
return -ENODEV;
gdth_pcistr.dpmem = pci_resource_start(pdev, 0);
} else { /* GDT6110, GDT6120, .. */
if (!(base0 & IORESOURCE_MEM) ||
!(base2 & IORESOURCE_MEM) ||
!(base1 & IORESOURCE_IO))
return -ENODEV;
gdth_pcistr.dpmem = pci_resource_start(pdev, 2);
gdth_pcistr.io = pci_resource_start(pdev, 1);
}
TRACE2(("Controller found at %d/%d, irq %d, dpmem 0x%lx\n",
gdth_pcistr.pdev->bus->number,
PCI_SLOT(gdth_pcistr.pdev->devfn),
gdth_pcistr.irq,
gdth_pcistr.dpmem));
rc = gdth_pci_probe_one(&gdth_pcistr, &ha);
if (rc)
return rc;
return 0;
}
#endif /* CONFIG_PCI */
#ifdef CONFIG_EISA
static int __init gdth_init_eisa(u16 eisa_adr,gdth_ha_str *ha)
{
u32 retries,id;
u8 prot_ver,eisacf,i,irq_found;
TRACE(("gdth_init_eisa() adr. %x\n",eisa_adr));
/* disable board interrupts, deinitialize services */
outb(0xff,eisa_adr+EDOORREG);
outb(0x00,eisa_adr+EDENABREG);
outb(0x00,eisa_adr+EINTENABREG);
outb(0xff,eisa_adr+LDOORREG);
retries = INIT_RETRIES;
gdth_delay(20);
while (inb(eisa_adr+EDOORREG) != 0xff) {
if (--retries == 0) {
printk("GDT-EISA: Initialization error (DEINIT failed)\n");
return 0;
}
gdth_delay(1);
TRACE2(("wait for DEINIT: retries=%d\n",retries));
}
prot_ver = inb(eisa_adr+MAILBOXREG);
outb(0xff,eisa_adr+EDOORREG);
if (prot_ver != PROTOCOL_VERSION) {
printk("GDT-EISA: Illegal protocol version\n");
return 0;
}
ha->bmic = eisa_adr;
ha->brd_phys = (u32)eisa_adr >> 12;
outl(0,eisa_adr+MAILBOXREG);
outl(0,eisa_adr+MAILBOXREG+4);
outl(0,eisa_adr+MAILBOXREG+8);
outl(0,eisa_adr+MAILBOXREG+12);
/* detect IRQ */
if ((id = inl(eisa_adr+ID0REG)) == GDT3_ID) {
ha->oem_id = OEM_ID_ICP;
ha->type = GDT_EISA;
ha->stype = id;
outl(1,eisa_adr+MAILBOXREG+8);
outb(0xfe,eisa_adr+LDOORREG);
retries = INIT_RETRIES;
gdth_delay(20);
while (inb(eisa_adr+EDOORREG) != 0xfe) {
if (--retries == 0) {
printk("GDT-EISA: Initialization error (get IRQ failed)\n");
return 0;
}
gdth_delay(1);
}
ha->irq = inb(eisa_adr+MAILBOXREG);
outb(0xff,eisa_adr+EDOORREG);
TRACE2(("GDT3000/3020: IRQ=%d\n",ha->irq));
/* check the result */
if (ha->irq == 0) {
TRACE2(("Unknown IRQ, use IRQ table from cmd line !\n"));
for (i = 0, irq_found = FALSE;
i < MAXHA && irq[i] != 0xff; ++i) {
if (irq[i]==10 || irq[i]==11 || irq[i]==12 || irq[i]==14) {
irq_found = TRUE;
break;
}
}
if (irq_found) {
ha->irq = irq[i];
irq[i] = 0;
printk("GDT-EISA: Can not detect controller IRQ,\n");
printk("Use IRQ setting from command line (IRQ = %d)\n",
ha->irq);
} else {
printk("GDT-EISA: Initialization error (unknown IRQ), Enable\n");
printk("the controller BIOS or use command line parameters\n");
return 0;
}
}
} else {
eisacf = inb(eisa_adr+EISAREG) & 7;
if (eisacf > 4) /* level triggered */
eisacf -= 4;
ha->irq = gdth_irq_tab[eisacf];
ha->oem_id = OEM_ID_ICP;
ha->type = GDT_EISA;
ha->stype = id;
}
ha->dma64_support = 0;
return 1;
}
#endif /* CONFIG_EISA */
#ifdef CONFIG_ISA
static int __init gdth_init_isa(u32 bios_adr,gdth_ha_str *ha)
{
register gdt2_dpram_str __iomem *dp2_ptr;
int i;
u8 irq_drq,prot_ver;
u32 retries;
TRACE(("gdth_init_isa() bios adr. %x\n",bios_adr));
ha->brd = ioremap(bios_adr, sizeof(gdt2_dpram_str));
if (ha->brd == NULL) {
printk("GDT-ISA: Initialization error (DPMEM remap error)\n");
return 0;
}
dp2_ptr = ha->brd;
writeb(1, &dp2_ptr->io.memlock); /* switch off write protection */
/* reset interface area */
memset_io(&dp2_ptr->u, 0, sizeof(dp2_ptr->u));
if (readl(&dp2_ptr->u) != 0) {
printk("GDT-ISA: Initialization error (DPMEM write error)\n");
iounmap(ha->brd);
return 0;
}
/* disable board interrupts, read DRQ and IRQ */
writeb(0xff, &dp2_ptr->io.irqdel);
writeb(0x00, &dp2_ptr->io.irqen);
writeb(0x00, &dp2_ptr->u.ic.S_Status);
writeb(0x00, &dp2_ptr->u.ic.Cmd_Index);
irq_drq = readb(&dp2_ptr->io.rq);
for (i=0; i<3; ++i) {
if ((irq_drq & 1)==0)
break;
irq_drq >>= 1;
}
ha->drq = gdth_drq_tab[i];
irq_drq = readb(&dp2_ptr->io.rq) >> 3;
for (i=1; i<5; ++i) {
if ((irq_drq & 1)==0)
break;
irq_drq >>= 1;
}
ha->irq = gdth_irq_tab[i];
/* deinitialize services */
writel(bios_adr, &dp2_ptr->u.ic.S_Info[0]);
writeb(0xff, &dp2_ptr->u.ic.S_Cmd_Indx);
writeb(0, &dp2_ptr->io.event);
retries = INIT_RETRIES;
gdth_delay(20);
while (readb(&dp2_ptr->u.ic.S_Status) != 0xff) {
if (--retries == 0) {
printk("GDT-ISA: Initialization error (DEINIT failed)\n");
iounmap(ha->brd);
return 0;
}
gdth_delay(1);
}
prot_ver = (u8)readl(&dp2_ptr->u.ic.S_Info[0]);
writeb(0, &dp2_ptr->u.ic.Status);
writeb(0xff, &dp2_ptr->io.irqdel);
if (prot_ver != PROTOCOL_VERSION) {
printk("GDT-ISA: Illegal protocol version\n");
iounmap(ha->brd);
return 0;
}
ha->oem_id = OEM_ID_ICP;
ha->type = GDT_ISA;
ha->ic_all_size = sizeof(dp2_ptr->u);
ha->stype= GDT2_ID;
ha->brd_phys = bios_adr >> 4;
/* special request to controller BIOS */
writel(0x00, &dp2_ptr->u.ic.S_Info[0]);
writel(0x00, &dp2_ptr->u.ic.S_Info[1]);
writel(0x01, &dp2_ptr->u.ic.S_Info[2]);
writel(0x00, &dp2_ptr->u.ic.S_Info[3]);
writeb(0xfe, &dp2_ptr->u.ic.S_Cmd_Indx);
writeb(0, &dp2_ptr->io.event);
retries = INIT_RETRIES;
gdth_delay(20);
while (readb(&dp2_ptr->u.ic.S_Status) != 0xfe) {
if (--retries == 0) {
printk("GDT-ISA: Initialization error\n");
iounmap(ha->brd);
return 0;
}
gdth_delay(1);
}
writeb(0, &dp2_ptr->u.ic.Status);
writeb(0xff, &dp2_ptr->io.irqdel);
ha->dma64_support = 0;
return 1;
}
#endif /* CONFIG_ISA */
#ifdef CONFIG_PCI
static int gdth_init_pci(struct pci_dev *pdev, gdth_pci_str *pcistr,
gdth_ha_str *ha)
{
register gdt6_dpram_str __iomem *dp6_ptr;
register gdt6c_dpram_str __iomem *dp6c_ptr;
register gdt6m_dpram_str __iomem *dp6m_ptr;
u32 retries;
u8 prot_ver;
u16 command;
int i, found = FALSE;
TRACE(("gdth_init_pci()\n"));
if (pdev->vendor == PCI_VENDOR_ID_INTEL)
ha->oem_id = OEM_ID_INTEL;
else
ha->oem_id = OEM_ID_ICP;
ha->brd_phys = (pdev->bus->number << 8) | (pdev->devfn & 0xf8);
ha->stype = (u32)pdev->device;
ha->irq = pdev->irq;
ha->pdev = pdev;
if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6000B) { /* GDT6000/B */
TRACE2(("init_pci() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6_dpram_str));
if (ha->brd == NULL) {
printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
return 0;
}
/* check and reset interface area */
dp6_ptr = ha->brd;
writel(DPMEM_MAGIC, &dp6_ptr->u);
if (readl(&dp6_ptr->u) != DPMEM_MAGIC) {
printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n",
pcistr->dpmem);
found = FALSE;
for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
iounmap(ha->brd);
ha->brd = ioremap(i, sizeof(u16));
if (ha->brd == NULL) {
printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
return 0;
}
if (readw(ha->brd) != 0xffff) {
TRACE2(("init_pci_old() address 0x%x busy\n", i));
continue;
}
iounmap(ha->brd);
pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i);
ha->brd = ioremap(i, sizeof(gdt6_dpram_str));
if (ha->brd == NULL) {
printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
return 0;
}
dp6_ptr = ha->brd;
writel(DPMEM_MAGIC, &dp6_ptr->u);
if (readl(&dp6_ptr->u) == DPMEM_MAGIC) {
printk("GDT-PCI: Use free address at 0x%x\n", i);
found = TRUE;
break;
}
}
if (!found) {
printk("GDT-PCI: No free address found!\n");
iounmap(ha->brd);
return 0;
}
}
memset_io(&dp6_ptr->u, 0, sizeof(dp6_ptr->u));
if (readl(&dp6_ptr->u) != 0) {
printk("GDT-PCI: Initialization error (DPMEM write error)\n");
iounmap(ha->brd);
return 0;
}
/* disable board interrupts, deinit services */
writeb(0xff, &dp6_ptr->io.irqdel);
writeb(0x00, &dp6_ptr->io.irqen);
writeb(0x00, &dp6_ptr->u.ic.S_Status);
writeb(0x00, &dp6_ptr->u.ic.Cmd_Index);
writel(pcistr->dpmem, &dp6_ptr->u.ic.S_Info[0]);
writeb(0xff, &dp6_ptr->u.ic.S_Cmd_Indx);
writeb(0, &dp6_ptr->io.event);
retries = INIT_RETRIES;
gdth_delay(20);
while (readb(&dp6_ptr->u.ic.S_Status) != 0xff) {
if (--retries == 0) {
printk("GDT-PCI: Initialization error (DEINIT failed)\n");
iounmap(ha->brd);
return 0;
}
gdth_delay(1);
}
prot_ver = (u8)readl(&dp6_ptr->u.ic.S_Info[0]);
writeb(0, &dp6_ptr->u.ic.S_Status);
writeb(0xff, &dp6_ptr->io.irqdel);
if (prot_ver != PROTOCOL_VERSION) {
printk("GDT-PCI: Illegal protocol version\n");
iounmap(ha->brd);
return 0;
}
ha->type = GDT_PCI;
ha->ic_all_size = sizeof(dp6_ptr->u);
/* special command to controller BIOS */
writel(0x00, &dp6_ptr->u.ic.S_Info[0]);
writel(0x00, &dp6_ptr->u.ic.S_Info[1]);
writel(0x00, &dp6_ptr->u.ic.S_Info[2]);
writel(0x00, &dp6_ptr->u.ic.S_Info[3]);
writeb(0xfe, &dp6_ptr->u.ic.S_Cmd_Indx);
writeb(0, &dp6_ptr->io.event);
retries = INIT_RETRIES;
gdth_delay(20);
while (readb(&dp6_ptr->u.ic.S_Status) != 0xfe) {
if (--retries == 0) {
printk("GDT-PCI: Initialization error\n");
iounmap(ha->brd);
return 0;
}
gdth_delay(1);
}
writeb(0, &dp6_ptr->u.ic.S_Status);
writeb(0xff, &dp6_ptr->io.irqdel);
ha->dma64_support = 0;
} else if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6555) { /* GDT6110, ... */
ha->plx = (gdt6c_plx_regs *)pcistr->io;
TRACE2(("init_pci_new() dpmem %lx irq %d\n",
pcistr->dpmem,ha->irq));
ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6c_dpram_str));
if (ha->brd == NULL) {
printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
iounmap(ha->brd);
return 0;
}
/* check and reset interface area */
dp6c_ptr = ha->brd;
writel(DPMEM_MAGIC, &dp6c_ptr->u);
if (readl(&dp6c_ptr->u) != DPMEM_MAGIC) {
printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n",
pcistr->dpmem);
found = FALSE;