Commit 125a4634 authored by Andrew Morton's avatar Andrew Morton Committed by Linus Torvalds

[PATCH] Add support for SGI's IOC4 chipset

From: Aniket Malatpure <aniket@sgi.com>

Adds support for the IOC4 IDE part.
parent 409c7f3a
......@@ -745,6 +745,14 @@ config BLK_DEV_SVWKS
This driver adds PIO/(U)DMA support for the ServerWorks OSB4/CSB5
chipsets.
config BLK_DEV_SGIIOC4
tristate "Silicon Graphics IOC4 chipset support"
depends on IA64_SGI_SN2
help
This driver adds PIO & MultiMode DMA-2 support for the SGI IOC4
chipset, which has one channel and can support two devices.
Please say Y here if you have an Altix System from SGI.
config BLK_DEV_SIIMAGE
tristate "Silicon Image chipset support"
help
......
......@@ -214,7 +214,7 @@ static void icside_maskproc(ide_drive_t *drive, int mask)
#define NR_ENTRIES 256
#define TABLE_SIZE (NR_ENTRIES * 8)
static void ide_build_sglist(ide_drive_t *drive, struct request *rq)
static void icside_build_sglist(ide_drive_t *drive, struct request *rq)
{
ide_hwif_t *hwif = drive->hwif;
struct icside_state *state = hwif->hwif_data;
......@@ -543,7 +543,7 @@ icside_dma_common(ide_drive_t *drive, struct request *rq,
BUG_ON(hwif->sg_dma_active);
BUG_ON(dma_channel_active(hwif->hw.dma));
ide_build_sglist(drive, rq);
icside_build_sglist(drive, rq);
/*
* Ensure that we have the right interrupt routed.
......
......@@ -200,8 +200,8 @@ EXPORT_SYMBOL_GPL(ide_dma_intr);
* kernel provide the necessary cache management so that we can
* operate in a portable fashion
*/
static int ide_build_sglist (ide_drive_t *drive, struct request *rq)
int ide_build_sglist(ide_drive_t *drive, struct request *rq)
{
ide_hwif_t *hwif = HWIF(drive);
struct scatterlist *sg = hwif->sg_table;
......@@ -220,6 +220,8 @@ static int ide_build_sglist (ide_drive_t *drive, struct request *rq)
return pci_map_sg(hwif->pci_dev, sg, nents, hwif->sg_dma_direction);
}
EXPORT_SYMBOL_GPL(ide_build_sglist);
/**
* ide_raw_build_sglist - map IDE scatter gather for DMA
* @drive: the drive to build the DMA table for
......@@ -230,8 +232,8 @@ static int ide_build_sglist (ide_drive_t *drive, struct request *rq)
* of the kernel provide the necessary cache management so that we can
* operate in a portable fashion
*/
static int ide_raw_build_sglist (ide_drive_t *drive, struct request *rq)
int ide_raw_build_sglist(ide_drive_t *drive, struct request *rq)
{
ide_hwif_t *hwif = HWIF(drive);
struct scatterlist *sg = hwif->sg_table;
......@@ -270,6 +272,8 @@ static int ide_raw_build_sglist (ide_drive_t *drive, struct request *rq)
return pci_map_sg(hwif->pci_dev, sg, nents, hwif->sg_dma_direction);
}
EXPORT_SYMBOL_GPL(ide_raw_build_sglist);
/**
* ide_build_dmatable - build IDE DMA table
*
......
......@@ -21,6 +21,7 @@ obj-$(CONFIG_BLK_DEV_PDC202XX_NEW) += pdc202xx_new.o
obj-$(CONFIG_BLK_DEV_PIIX) += piix.o
obj-$(CONFIG_BLK_DEV_RZ1000) += rz1000.o
obj-$(CONFIG_BLK_DEV_SVWKS) += serverworks.o
obj-$(CONFIG_BLK_DEV_SGIIOC4) += sgiioc4.o
obj-$(CONFIG_BLK_DEV_SIIMAGE) += siimage.o
obj-$(CONFIG_BLK_DEV_SIS5513) += sis5513.o
obj-$(CONFIG_BLK_DEV_SL82C105) += sl82c105.o
......
/*
* Copyright (c) 2003 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/hdreg.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/ioport.h>
#include <linux/blkdev.h>
#include <asm/io.h>
#include <linux/ide.h>
/* IOC4 Specific Definitions */
#define IOC4_CMD_OFFSET 0x100
#define IOC4_CTRL_OFFSET 0x120
#define IOC4_DMA_OFFSET 0x140
#define IOC4_INTR_OFFSET 0x0
#define IOC4_TIMING 0x00
#define IOC4_DMA_PTR_L 0x01
#define IOC4_DMA_PTR_H 0x02
#define IOC4_DMA_ADDR_L 0x03
#define IOC4_DMA_ADDR_H 0x04
#define IOC4_BC_DEV 0x05
#define IOC4_BC_MEM 0x06
#define IOC4_DMA_CTRL 0x07
#define IOC4_DMA_END_ADDR 0x08
/* Bits in the IOC4 Control/Status Register */
#define IOC4_S_DMA_START 0x01
#define IOC4_S_DMA_STOP 0x02
#define IOC4_S_DMA_DIR 0x04
#define IOC4_S_DMA_ACTIVE 0x08
#define IOC4_S_DMA_ERROR 0x10
#define IOC4_ATA_MEMERR 0x02
/* Read/Write Directions */
#define IOC4_DMA_WRITE 0x04
#define IOC4_DMA_READ 0x00
/* Interrupt Register Offsets */
#define IOC4_INTR_REG 0x03
#define IOC4_INTR_SET 0x05
#define IOC4_INTR_CLEAR 0x07
#define IOC4_IDE_CACHELINE_SIZE 128
#define IOC4_CMD_CTL_BLK_SIZE 0x20
#define IOC4_SUPPORTED_FIRMWARE_REV 46
typedef struct {
u32 timing_reg0;
u32 timing_reg1;
u32 low_mem_ptr;
u32 high_mem_ptr;
u32 low_mem_addr;
u32 high_mem_addr;
u32 dev_byte_count;
u32 mem_byte_count;
u32 status;
} ioc4_dma_regs_t;
/* Each Physical Region Descriptor Entry size is 16 bytes (2 * 64 bits) */
/* IOC4 has only 1 IDE channel */
#define IOC4_PRD_BYTES 16
#define IOC4_PRD_ENTRIES (PAGE_SIZE /(4*IOC4_PRD_BYTES))
static void
sgiioc4_init_hwif_ports(hw_regs_t * hw, unsigned long data_port,
unsigned long ctrl_port, unsigned long irq_port)
{
unsigned long reg = data_port;
int i;
/* Registers are word (32 bit) aligned */
for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
hw->io_ports[i] = reg + i * 4;
if (ctrl_port)
hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
if (irq_port)
hw->io_ports[IDE_IRQ_OFFSET] = irq_port;
}
static void
sgiioc4_maskproc(ide_drive_t * drive, int mask)
{
ide_hwif_t *hwif = HWIF(drive);
hwif->OUTB(mask ? (drive->ctl | 2) : (drive->ctl & ~2),
IDE_CONTROL_REG);
}
static int
sgiioc4_checkirq(ide_hwif_t * hwif)
{
u8 intr_reg =
hwif->INL(hwif->io_ports[IDE_IRQ_OFFSET] + IOC4_INTR_REG * 4);
if (intr_reg & 0x03)
return 1;
return 0;
}
static int
sgiioc4_clearirq(ide_drive_t * drive)
{
u32 intr_reg;
ide_hwif_t *hwif = HWIF(drive);
unsigned long other_ir =
hwif->io_ports[IDE_IRQ_OFFSET] + (IOC4_INTR_REG << 2);
/* Code to check for PCI error conditions */
intr_reg = hwif->INL(other_ir);
if (intr_reg & 0x03) { /* Valid IOC4-IDE interrupt */
/*
* Using hwif->INB to read the IDE_STATUS_REG has a side effect
* of clearing the interrupt. The first read should clear it
* if it is set. The second read should return a "clear" status
* if it got cleared. If not, then spin for a bit trying to
* clear it.
*/
u8 stat = hwif->INB(IDE_STATUS_REG);
int count = 0;
stat = hwif->INB(IDE_STATUS_REG);
while ((stat & 0x80) && (count++ < 100)) {
udelay(1);
stat = hwif->INB(IDE_STATUS_REG);
}
if (intr_reg & 0x02) {
/* Error when transferring DMA data on PCI bus */
u32 pci_err_addr_low, pci_err_addr_high,
pci_stat_cmd_reg;
pci_err_addr_low =
hwif->INL(hwif->io_ports[IDE_IRQ_OFFSET]);
pci_err_addr_high =
hwif->INL(hwif->io_ports[IDE_IRQ_OFFSET] + 4);
pci_read_config_dword(hwif->pci_dev, PCI_COMMAND,
&pci_stat_cmd_reg);
printk(KERN_ERR
"%s(%s) : PCI Bus Error when doing DMA:"
" status-cmd reg is 0x%x\n",
__FUNCTION__, drive->name, pci_stat_cmd_reg);
printk(KERN_ERR
"%s(%s) : PCI Error Address is 0x%x%x\n",
__FUNCTION__, drive->name,
pci_err_addr_high, pci_err_addr_low);
/* Clear the PCI Error indicator */
pci_write_config_dword(hwif->pci_dev, PCI_COMMAND,
0x00000146);
}
/* Clear the Interrupt, Error bits on the IOC4 */
hwif->OUTL(0x03, other_ir);
intr_reg = hwif->INL(other_ir);
}
return intr_reg & 3;
}
static int
sgiioc4_ide_dma_begin(ide_drive_t * drive)
{
ide_hwif_t *hwif = HWIF(drive);
unsigned int reg = hwif->INL(hwif->dma_base + IOC4_DMA_CTRL * 4);
unsigned int temp_reg = reg | IOC4_S_DMA_START;
hwif->OUTL(temp_reg, hwif->dma_base + IOC4_DMA_CTRL * 4);
return 0;
}
static u32
sgiioc4_ide_dma_stop(ide_hwif_t *hwif, u64 dma_base)
{
u32 ioc4_dma;
int count;
count = 0;
ioc4_dma = hwif->INL(dma_base + IOC4_DMA_CTRL * 4);
while ((ioc4_dma & IOC4_S_DMA_STOP) && (count++ < 200)) {
udelay(1);
ioc4_dma = hwif->INL(dma_base + IOC4_DMA_CTRL * 4);
}
return ioc4_dma;
}
/* Stops the IOC4 DMA Engine */
static int
sgiioc4_ide_dma_end(ide_drive_t * drive)
{
u32 ioc4_dma, bc_dev, bc_mem, num, valid = 0, cnt = 0;
ide_hwif_t *hwif = HWIF(drive);
u64 dma_base = hwif->dma_base;
int dma_stat = 0;
unsigned long *ending_dma = (unsigned long *) hwif->dma_base2;
hwif->OUTL(IOC4_S_DMA_STOP, dma_base + IOC4_DMA_CTRL * 4);
ioc4_dma = sgiioc4_ide_dma_stop(hwif, dma_base);
if (ioc4_dma & IOC4_S_DMA_STOP) {
printk(KERN_ERR
"%s(%s): IOC4 DMA STOP bit is still 1 :"
"ioc4_dma_reg 0x%x\n",
__FUNCTION__, drive->name, ioc4_dma);
dma_stat = 1;
}
/*
* The IOC4 will DMA 1's to the ending dma area to indicate that
* previous data DMA is complete. This is necessary because of relaxed
* ordering between register reads and DMA writes on the Altix.
*/
while ((cnt++ < 200) && (!valid)) {
for (num = 0; num < 16; num++) {
if (ending_dma[num]) {
valid = 1;
break;
}
}
udelay(1);
}
if (!valid) {
printk(KERN_ERR "%s(%s) : DMA incomplete\n", __FUNCTION__,
drive->name);
dma_stat = 1;
}
bc_dev = hwif->INL(dma_base + IOC4_BC_DEV * 4);
bc_mem = hwif->INL(dma_base + IOC4_BC_MEM * 4);
if ((bc_dev & 0x01FF) || (bc_mem & 0x1FF)) {
if (bc_dev > bc_mem + 8) {
printk(KERN_ERR
"%s(%s): WARNING!! byte_count_dev %d "
"!= byte_count_mem %d\n",
__FUNCTION__, drive->name, bc_dev, bc_mem);
}
}
drive->waiting_for_dma = 0;
ide_destroy_dmatable(drive);
return dma_stat;
}
static int
sgiioc4_ide_dma_check(ide_drive_t * drive)
{
if (ide_config_drive_speed(drive, XFER_MW_DMA_2) != 0) {
printk(KERN_INFO
"Couldnot set %s in Multimode-2 DMA mode | "
"Drive %s using PIO instead\n",
drive->name, drive->name);
drive->using_dma = 0;
} else
drive->using_dma = 1;
return 0;
}
static int
sgiioc4_ide_dma_on(ide_drive_t * drive)
{
drive->using_dma = 1;
return HWIF(drive)->ide_dma_host_on(drive);
}
static int
sgiioc4_ide_dma_off(ide_drive_t * drive)
{
printk(KERN_INFO "%s: DMA disabled\n", drive->name);
return HWIF(drive)->ide_dma_off_quietly(drive);
}
static int
sgiioc4_ide_dma_off_quietly(ide_drive_t * drive)
{
drive->using_dma = 0;
return HWIF(drive)->ide_dma_host_off(drive);
}
/* returns 1 if dma irq issued, 0 otherwise */
static int
sgiioc4_ide_dma_test_irq(ide_drive_t * drive)
{
return sgiioc4_checkirq(HWIF(drive));
}
static int
sgiioc4_ide_dma_host_on(ide_drive_t * drive)
{
if (drive->using_dma)
return 0;
return 1;
}
static int
sgiioc4_ide_dma_host_off(ide_drive_t * drive)
{
sgiioc4_clearirq(drive);
return 0;
}
static int
sgiioc4_ide_dma_verbose(ide_drive_t * drive)
{
if (drive->using_dma == 1)
printk(", UDMA(16)");
else
printk(", PIO");
return 1;
}
static int
sgiioc4_ide_dma_lostirq(ide_drive_t * drive)
{
HWIF(drive)->resetproc(drive);
return __ide_dma_lostirq(drive);
}
static void
sgiioc4_resetproc(ide_drive_t * drive)
{
sgiioc4_ide_dma_end(drive);
sgiioc4_clearirq(drive);
}
static u8
sgiioc4_INB(unsigned long port)
{
u8 reg = (u8) inb(port);
if ((port & 0xFFF) == 0x11C) { /* Status register of IOC4 */
if (reg & 0x51) { /* Not busy...check for interrupt */
unsigned long other_ir = port - 0x110;
unsigned int intr_reg = (u32) inl(other_ir);
/* Clear the Interrupt, Error bits on the IOC4 */
if (intr_reg & 0x03) {
outl(0x03, other_ir);
intr_reg = (u32) inl(other_ir);
}
}
}
return reg;
}
/* Creates a dma map for the scatter-gather list entries */
static void __init
ide_dma_sgiioc4(ide_hwif_t * hwif, unsigned long dma_base)
{
int num_ports = sizeof (ioc4_dma_regs_t);
printk(KERN_INFO "%s: BM-DMA at 0x%04lx-0x%04lx\n", hwif->name,
dma_base, dma_base + num_ports - 1);
if (!request_region(dma_base, num_ports, hwif->name)) {
printk(KERN_ERR
"%s(%s) -- ERROR, Addresses 0x%p to 0x%p "
"ALREADY in use\n",
__FUNCTION__, hwif->name, (void *) dma_base,
(void *) dma_base + num_ports - 1);
goto dma_alloc_failure;
}
hwif->dma_base = dma_base;
hwif->dmatable_cpu = pci_alloc_consistent(hwif->pci_dev,
IOC4_PRD_ENTRIES * IOC4_PRD_BYTES,
&hwif->dmatable_dma);
if (!hwif->dmatable_cpu)
goto dma_alloc_failure;
hwif->sg_table =
kmalloc(sizeof (struct scatterlist) * IOC4_PRD_ENTRIES, GFP_KERNEL);
if (!hwif->sg_table)
goto dma_sgalloc_failure;
hwif->dma_base2 = (unsigned long)
pci_alloc_consistent(hwif->pci_dev,
IOC4_IDE_CACHELINE_SIZE,
(dma_addr_t *) &(hwif->dma_status));
if (!hwif->dma_base2)
goto dma_base2alloc_failure;
return;
dma_base2alloc_failure:
kfree(hwif->sg_table);
dma_sgalloc_failure:
pci_free_consistent(hwif->pci_dev,
IOC4_PRD_ENTRIES * IOC4_PRD_BYTES,
hwif->dmatable_cpu, hwif->dmatable_dma);
printk(KERN_INFO
"%s() -- Error! Unable to allocate DMA Maps for drive %s\n",
__FUNCTION__, hwif->name);
printk(KERN_INFO
"Changing from DMA to PIO mode for Drive %s\n", hwif->name);
dma_alloc_failure:
/* Disable DMA because we couldnot allocate any DMA maps */
hwif->autodma = 0;
hwif->atapi_dma = 0;
}
/* Initializes the IOC4 DMA Engine */
static void
sgiioc4_configure_for_dma(int dma_direction, ide_drive_t * drive)
{
u32 ioc4_dma;
ide_hwif_t *hwif = HWIF(drive);
u64 dma_base = hwif->dma_base;
u32 dma_addr, ending_dma_addr;
ioc4_dma = hwif->INL(dma_base + IOC4_DMA_CTRL * 4);
if (ioc4_dma & IOC4_S_DMA_ACTIVE) {
printk(KERN_WARNING
"%s(%s):Warning!! DMA from previous transfer was still active\n",
__FUNCTION__, drive->name);
hwif->OUTL(IOC4_S_DMA_STOP, dma_base + IOC4_DMA_CTRL * 4);
ioc4_dma = sgiioc4_ide_dma_stop(hwif, dma_base);
if (ioc4_dma & IOC4_S_DMA_STOP)
printk(KERN_ERR
"%s(%s) : IOC4 Dma STOP bit is still 1\n",
__FUNCTION__, drive->name);
}
ioc4_dma = hwif->INL(dma_base + IOC4_DMA_CTRL * 4);
if (ioc4_dma & IOC4_S_DMA_ERROR) {
printk(KERN_WARNING
"%s(%s) : Warning!! - DMA Error during Previous"
" transfer | status 0x%x\n",
__FUNCTION__, drive->name, ioc4_dma);
hwif->OUTL(IOC4_S_DMA_STOP, dma_base + IOC4_DMA_CTRL * 4);
ioc4_dma = sgiioc4_ide_dma_stop(hwif, dma_base);
if (ioc4_dma & IOC4_S_DMA_STOP)
printk(KERN_ERR
"%s(%s) : IOC4 DMA STOP bit is still 1\n",
__FUNCTION__, drive->name);
}
/* Address of the Scatter Gather List */
dma_addr = cpu_to_le32(hwif->dmatable_dma);
hwif->OUTL(dma_addr, dma_base + IOC4_DMA_PTR_L * 4);
/* Address of the Ending DMA */
memset((unsigned int *) hwif->dma_base2, 0, IOC4_IDE_CACHELINE_SIZE);
ending_dma_addr = cpu_to_le32(hwif->dma_status);
hwif->OUTL(ending_dma_addr, dma_base + IOC4_DMA_END_ADDR * 4);
hwif->OUTL(dma_direction, dma_base + IOC4_DMA_CTRL * 4);
drive->waiting_for_dma = 1;
}
/* IOC4 Scatter Gather list Format */
/* 128 Bit entries to support 64 bit addresses in the future */
/* The Scatter Gather list Entry should be in the BIG-ENDIAN Format */
/* --------------------------------------------------------------------- */
/* | Upper 32 bits - Zero | Lower 32 bits- address | */
/* --------------------------------------------------------------------- */
/* | Upper 32 bits - Zero |EOL| 15 unused | 16 Bit Length| */
/* --------------------------------------------------------------------- */
/* Creates the scatter gather list, DMA Table */
static unsigned int
sgiioc4_build_dma_table(ide_drive_t * drive, struct request *rq, int ddir)
{
ide_hwif_t *hwif = HWIF(drive);
unsigned int *table = hwif->dmatable_cpu;
unsigned int count = 0, i = 1;
struct scatterlist *sg;
if (HWGROUP(drive)->rq->flags & REQ_DRIVE_TASKFILE)
hwif->sg_nents = i = ide_raw_build_sglist(drive, rq);
else
hwif->sg_nents = i = ide_build_sglist(drive, rq);
if (!i)
return 0; /* sglist of length Zero */
sg = hwif->sg_table;
while (i && sg_dma_len(sg)) {
dma_addr_t cur_addr;
int cur_len;
cur_addr = sg_dma_address(sg);
cur_len = sg_dma_len(sg);
while (cur_len) {
if (count++ >= IOC4_PRD_ENTRIES) {
printk(KERN_WARNING
"%s: DMA table too small\n",
drive->name);
goto use_pio_instead;
} else {
u32 xcount, bcount =
0x10000 - (cur_addr & 0xffff);
if (bcount > cur_len)
bcount = cur_len;
/* put the addr, length in
* the IOC4 dma-table format */
*table = 0x0;
table++;
*table = cpu_to_be32(cur_addr);
table++;
*table = 0x0;
table++;
xcount = bcount & 0xffff;
*table = cpu_to_be32(xcount);
table++;
cur_addr += bcount;
cur_len -= bcount;
}
}
sg++;
i--;
}
if (count) {
table--;
*table |= cpu_to_be32(0x80000000);
return count;
}
use_pio_instead:
pci_unmap_sg(hwif->pci_dev, hwif->sg_table, hwif->sg_nents,
hwif->sg_dma_direction);
hwif->sg_dma_active = 0;
return 0; /* revert to PIO for this request */
}
static int
sgiioc4_ide_dma_read(ide_drive_t * drive)
{
struct request *rq = HWGROUP(drive)->rq;
unsigned int count = 0;
if (!(count = sgiioc4_build_dma_table(drive, rq, PCI_DMA_FROMDEVICE))) {
/* try PIO instead of DMA */
return 1;
}
/* Writes FROM the IOC4 TO Main Memory */
sgiioc4_configure_for_dma(IOC4_DMA_WRITE, drive);
return 0;
}
static int
sgiioc4_ide_dma_write(ide_drive_t * drive)
{
struct request *rq = HWGROUP(drive)->rq;
unsigned int count = 0;
if (!(count = sgiioc4_build_dma_table(drive, rq, PCI_DMA_TODEVICE))) {
/* try PIO instead of DMA */
return 1;
}
sgiioc4_configure_for_dma(IOC4_DMA_READ, drive);
/* Writes TO the IOC4 FROM Main Memory */
return 0;
}
static void __init
ide_init_sgiioc4(ide_hwif_t * hwif)
{
hwif->mmio = 2;
hwif->autodma = 1;
hwif->atapi_dma = 1;
hwif->ultra_mask = 0x0; /* Disable Ultra DMA */
hwif->mwdma_mask = 0x2; /* Multimode-2 DMA */
hwif->swdma_mask = 0x2;
hwif->identify = NULL;
hwif->tuneproc = NULL; /* Sets timing for PIO mode */
hwif->speedproc = NULL; /* Sets timing for DMA &/or PIO modes */
hwif->selectproc = NULL;/* Use the default routine to select drive */
hwif->reset_poll = NULL;/* No HBA specific reset_poll needed */
hwif->pre_reset = NULL; /* No HBA specific pre_set needed */
hwif->resetproc = &sgiioc4_resetproc;/* Reset DMA engine,
clear interrupts */
hwif->intrproc = NULL; /* Enable or Disable interrupt from drive */
hwif->maskproc = &sgiioc4_maskproc; /* Mask on/off NIEN register */
hwif->quirkproc = NULL;
hwif->busproc = NULL;
hwif->ide_dma_read = &sgiioc4_ide_dma_read;
hwif->ide_dma_write = &sgiioc4_ide_dma_write;
hwif->ide_dma_begin = &sgiioc4_ide_dma_begin;
hwif->ide_dma_end = &sgiioc4_ide_dma_end;
hwif->ide_dma_check = &sgiioc4_ide_dma_check;
hwif->ide_dma_on = &sgiioc4_ide_dma_on;
hwif->ide_dma_off = &sgiioc4_ide_dma_off;
hwif->ide_dma_off_quietly = &sgiioc4_ide_dma_off_quietly;
hwif->ide_dma_test_irq = &sgiioc4_ide_dma_test_irq;
hwif->ide_dma_host_on = &sgiioc4_ide_dma_host_on;
hwif->ide_dma_host_off = &sgiioc4_ide_dma_host_off;
hwif->ide_dma_bad_drive = &__ide_dma_bad_drive;
hwif->ide_dma_good_drive = &__ide_dma_good_drive;
hwif->ide_dma_count = &__ide_dma_count;
hwif->ide_dma_verbose = &sgiioc4_ide_dma_verbose;
hwif->ide_dma_retune = &__ide_dma_retune;
hwif->ide_dma_lostirq = &sgiioc4_ide_dma_lostirq;
hwif->ide_dma_timeout = &__ide_dma_timeout;
hwif->INB = &sgiioc4_INB;
}
static int __init
sgiioc4_ide_setup_pci_device(struct pci_dev *dev, ide_pci_device_t * d)
{
unsigned long base, ctl, dma_base, irqport;
ide_hwif_t *hwif;
int h;
for (h = 0; h < MAX_HWIFS; ++h) {
hwif = &ide_hwifs[h];
/* Find an empty HWIF */
if (hwif->chipset == ide_unknown)
break;
}
/* Get the CmdBlk and CtrlBlk Base Registers */
base = pci_resource_start(dev, 0) + IOC4_CMD_OFFSET;
ctl = pci_resource_start(dev, 0) + IOC4_CTRL_OFFSET;
irqport = pci_resource_start(dev, 0) + IOC4_INTR_OFFSET;
dma_base = pci_resource_start(dev, 0) + IOC4_DMA_OFFSET;
if (!request_region(base, IOC4_CMD_CTL_BLK_SIZE, hwif->name)) {
printk(KERN_ERR
"%s : %s -- ERROR, Port Addresses "
"0x%p to 0x%p ALREADY in use\n",
__FUNCTION__, hwif->name, (void *) base,
(void *) base + IOC4_CMD_CTL_BLK_SIZE);
return 1;
}
if (hwif->io_ports[IDE_DATA_OFFSET] != base) {
/* Initialize the IO registers */
sgiioc4_init_hwif_ports(&hwif->hw, base, ctl, irqport);
memcpy(hwif->io_ports, hwif->hw.io_ports,
sizeof (hwif->io_ports));
hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
}
hwif->irq = dev->irq;
hwif->chipset = ide_pci;
hwif->pci_dev = dev;
hwif->channel = 0; /* Single Channel chip */
hwif->cds = (struct ide_pci_device_s *) d;
hwif->gendev.parent = &dev->dev;/* setup proper ancestral information */
/* Initializing chipset IRQ Registers */
hwif->OUTL(0x03, irqport + IOC4_INTR_SET * 4);
ide_init_sgiioc4(hwif);
if (dma_base)
ide_dma_sgiioc4(hwif, dma_base);
else
printk(KERN_INFO "%s: %s Bus-Master DMA disabled\n",
hwif->name, d->name);
probe_hwif_init(hwif);
return 0;
}
/* This ensures that we can build this for generic kernels without
* having all the SN2 code sync'd and merged.
*/
typedef enum pciio_endian_e {
PCIDMA_ENDIAN_BIG,
PCIDMA_ENDIAN_LITTLE
} pciio_endian_t;
pciio_endian_t __attribute__ ((weak)) snia_pciio_endian_set(struct pci_dev
*pci_dev, pciio_endian_t device_end,
pciio_endian_t desired_end);
static unsigned int __init
pci_init_sgiioc4(struct pci_dev *dev, ide_pci_device_t * d)
{
unsigned int class_rev;
if (pci_enable_device(dev)) {
printk(KERN_ERR
"Failed to enable device %s at slot %s\n",
d->name, dev->slot_name);
return 1;
}
pci_set_master(dev);
pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
class_rev &= 0xff;
printk(KERN_INFO "%s: IDE controller at PCI slot %s, revision %d\n",
d->name, dev->slot_name, class_rev);
if (class_rev < IOC4_SUPPORTED_FIRMWARE_REV) {
printk(KERN_ERR "Skipping %s IDE controller in slot %s: "
"firmware is obsolete - please upgrade to revision"
"46 or higher\n", d->name, dev->slot_name);
return 1;
}
/* Enable Byte Swapping in the PIC... */
if (snia_pciio_endian_set) {
snia_pciio_endian_set(dev, PCIDMA_ENDIAN_LITTLE,
PCIDMA_ENDIAN_BIG);
} else {
printk(KERN_ERR
"Failed to set endianness for device %s at slot %s\n",
d->name, dev->slot_name);
return 1;
}
return sgiioc4_ide_setup_pci_device(dev, d);
}
static ide_pci_device_t sgiioc4_chipsets[] __devinitdata = {
{
/* Channel 0 */
.vendor = PCI_VENDOR_ID_SGI,
.device = PCI_DEVICE_ID_SGI_IOC4,
.name = "SGIIOC4",
.init_hwif = ide_init_sgiioc4,
.init_dma = ide_dma_sgiioc4,
.channels = 1,
.autodma = AUTODMA,
/* SGI IOC4 doesn't have enablebits. */
.bootable = ON_BOARD,
}
};
static int __devinit
sgiioc4_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
ide_pci_device_t *d = &sgiioc4_chipsets[id->driver_data];
if (dev->device != d->device) {
printk(KERN_ERR "Error in %s(dev 0x%p | id 0x%p )\n",
__FUNCTION__, (void *) dev, (void *) id);
BUG();
}
if (pci_init_sgiioc4(dev, d))
return 0;
MOD_INC_USE_COUNT;
return 0;
}
static struct pci_device_id sgiioc4_pci_tbl[] = {
{PCI_VENDOR_ID_SGI, PCI_DEVICE_ID_SGI_IOC4, PCI_ANY_ID,
PCI_ANY_ID, 0x0b4000, 0xFFFFFF, 0},
{0}
};
static struct pci_driver driver = {
.name = "SGI-IOC4 IDE",
.id_table = sgiioc4_pci_tbl,
.probe = sgiioc4_init_one,
};
static int
sgiioc4_ide_init(void)
{
return ide_pci_register_driver(&driver);
}
static void
sgiioc4_ide_exit(void)
{
ide_pci_unregister_driver(&driver);
}
module_init(sgiioc4_ide_init);
module_exit(sgiioc4_ide_exit);
MODULE_AUTHOR("Aniket Malatpure - Silicon Graphics Inc. (SGI)");
MODULE_DESCRIPTION("PCI driver module for SGI IOC4 Base-IO Card");
MODULE_LICENSE("GPL");
......@@ -1693,6 +1693,8 @@ extern void ide_setup_pci_devices(struct pci_dev *, struct pci_dev *, ide_pci_de
#define GOOD_DMA_DRIVE 1
#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
extern int ide_build_sglist(ide_drive_t *, struct request *);
extern int ide_raw_build_sglist(ide_drive_t *, struct request *);
extern int ide_build_dmatable(ide_drive_t *, struct request *);
extern void ide_destroy_dmatable(ide_drive_t *);
extern ide_startstop_t ide_dma_intr(ide_drive_t *);
......
......@@ -900,6 +900,7 @@
#define PCI_VENDOR_ID_SGI 0x10a9
#define PCI_DEVICE_ID_SGI_IOC3 0x0003
#define PCI_DEVICE_ID_SGI_IOC4 0x100a
#define PCI_VENDOR_ID_SGI_LITHIUM 0x1002
#define PCI_VENDOR_ID_ACC 0x10aa
......
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