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kernel-ark/drivers/ide/ppc/mpc8xx.c
Bartlomiej Zolnierkiewicz 26bcb879c0 ide: add ide_set{_max}_pio() (take 4) 
* Add IDE_HFLAG_ABUSE_{PREFETCH,FAST_DEVSEL,DMA_MODES} flags
  and set them in ht6560, cmd640, cmd64x and sc1200 host drivers.

* Add set_pio_mode_abuse() for checking if host driver has a non-standard
  ->tuneproc() implementation and use it in do_special().

* Add ide_set_pio() for setting PIO mode (it uses hwif->pio_mask to find
  the maximum PIO mode supported by the host), also add ide_set_max_pio()
  wrapper for ide_set_pio() to use for auto-tuning.  Convert users of
  ->tuneproc to use ide_set{_max}_pio() where possible.  This leaves only
  do_special(), set_using_pio(), ide_hwif_restore() and ide_set_pio() as
  a direct users of ->tuneproc.

* Remove no longer needed ide_get_best_pio_mode() calls and printk-s
  reporting PIO mode selected from ->tuneproc implementations.

* Rename ->tuneproc hook to ->set_pio_mode and make 'pio' argument const.

* Remove stale comment from ide_config_drive_speed().

v2:
* Fix "ata_" prefix (Noticed by Jeff).

v3:
* Minor cleanups/fixups per Sergei's suggestions.

v4:
* Fix compile problem in drivers/ide/pci/cmd640.c
  (Noticed by Andrew Morton).

* Improve some ->set_pio_mode comments.

Reviewed-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-11 23:54:00 +02:00

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/*
* linux/drivers/ide/ppc/ide-m8xx.c
*
* Copyright (C) 2000, 2001 Wolfgang Denk, wd@denx.de
* Modified for direct IDE interface
* by Thomas Lange, thomas@corelatus.com
* Modified for direct IDE interface on 8xx without using the PCMCIA
* controller
* by Steven.Scholz@imc-berlin.de
* Moved out of arch/ppc/kernel/m8xx_setup.c, other minor cleanups
* by Mathew Locke <mattl@mvista.com>
*/
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/stddef.h>
#include <linux/unistd.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/user.h>
#include <linux/a.out.h>
#include <linux/tty.h>
#include <linux/major.h>
#include <linux/interrupt.h>
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/ide.h>
#include <linux/bootmem.h>
#include <asm/mpc8xx.h>
#include <asm/mmu.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/ide.h>
#include <asm/8xx_immap.h>
#include <asm/machdep.h>
#include <asm/irq.h>
static int identify (volatile u8 *p);
static void print_fixed (volatile u8 *p);
static void print_funcid (int func);
static int check_ide_device (unsigned long base);
static void ide_interrupt_ack (void *dev);
static void m8xx_ide_set_pio_mode(ide_drive_t *drive, const u8 pio);
typedef struct ide_ioport_desc {
unsigned long base_off; /* Offset to PCMCIA memory */
unsigned long reg_off[IDE_NR_PORTS]; /* controller register offsets */
int irq; /* IRQ */
} ide_ioport_desc_t;
ide_ioport_desc_t ioport_dsc[MAX_HWIFS] = {
#ifdef IDE0_BASE_OFFSET
{ IDE0_BASE_OFFSET,
{
IDE0_DATA_REG_OFFSET,
IDE0_ERROR_REG_OFFSET,
IDE0_NSECTOR_REG_OFFSET,
IDE0_SECTOR_REG_OFFSET,
IDE0_LCYL_REG_OFFSET,
IDE0_HCYL_REG_OFFSET,
IDE0_SELECT_REG_OFFSET,
IDE0_STATUS_REG_OFFSET,
IDE0_CONTROL_REG_OFFSET,
IDE0_IRQ_REG_OFFSET,
},
IDE0_INTERRUPT,
},
#ifdef IDE1_BASE_OFFSET
{ IDE1_BASE_OFFSET,
{
IDE1_DATA_REG_OFFSET,
IDE1_ERROR_REG_OFFSET,
IDE1_NSECTOR_REG_OFFSET,
IDE1_SECTOR_REG_OFFSET,
IDE1_LCYL_REG_OFFSET,
IDE1_HCYL_REG_OFFSET,
IDE1_SELECT_REG_OFFSET,
IDE1_STATUS_REG_OFFSET,
IDE1_CONTROL_REG_OFFSET,
IDE1_IRQ_REG_OFFSET,
},
IDE1_INTERRUPT,
},
#endif /* IDE1_BASE_OFFSET */
#endif /* IDE0_BASE_OFFSET */
};
ide_pio_timings_t ide_pio_clocks[6];
int hold_time[6] = {30, 20, 15, 10, 10, 10 }; /* PIO Mode 5 with IORDY (nonstandard) */
/*
* Warning: only 1 (ONE) PCMCIA slot supported here,
* which must be correctly initialized by the firmware (PPCBoot).
*/
static int _slot_ = -1; /* will be read from PCMCIA registers */
/* Make clock cycles and always round up */
#define PCMCIA_MK_CLKS( t, T ) (( (t) * ((T)/1000000) + 999U ) / 1000U )
/*
* IDE stuff.
*/
static int
m8xx_ide_default_irq(unsigned long base)
{
#ifdef CONFIG_BLK_DEV_MPC8xx_IDE
if (base >= MAX_HWIFS)
return 0;
printk("[%d] m8xx_ide_default_irq %d\n",__LINE__,ioport_dsc[base].irq);
return (ioport_dsc[base].irq);
#else
return 9;
#endif
}
static unsigned long
m8xx_ide_default_io_base(int index)
{
return index;
}
#define M8XX_PCMCIA_CD2(slot) (0x10000000 >> (slot << 4))
#define M8XX_PCMCIA_CD1(slot) (0x08000000 >> (slot << 4))
/*
* The TQM850L hardware has two pins swapped! Grrrrgh!
*/
#ifdef CONFIG_TQM850L
#define __MY_PCMCIA_GCRX_CXRESET PCMCIA_GCRX_CXOE
#define __MY_PCMCIA_GCRX_CXOE PCMCIA_GCRX_CXRESET
#else
#define __MY_PCMCIA_GCRX_CXRESET PCMCIA_GCRX_CXRESET
#define __MY_PCMCIA_GCRX_CXOE PCMCIA_GCRX_CXOE
#endif
#if defined(CONFIG_BLK_DEV_MPC8xx_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
#define PCMCIA_SCHLVL IDE0_INTERRUPT /* Status Change Interrupt Level */
static int pcmcia_schlvl = PCMCIA_SCHLVL;
#endif
/*
* See include/linux/ide.h for definition of hw_regs_t (p, base)
*/
/*
* m8xx_ide_init_hwif_ports for a direct IDE interface _using_
*/
#if defined(CONFIG_IDE_8xx_PCCARD) || defined(CONFIG_IDE_8xx_DIRECT)
static void
m8xx_ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port,
unsigned long ctrl_port, int *irq)
{
unsigned long *p = hw->io_ports;
int i;
typedef struct {
ulong br;
ulong or;
} pcmcia_win_t;
volatile pcmcia_win_t *win;
volatile pcmconf8xx_t *pcmp;
uint *pgcrx;
u32 pcmcia_phy_base;
u32 pcmcia_phy_end;
static unsigned long pcmcia_base = 0;
unsigned long base;
*p = 0;
if (irq)
*irq = 0;
pcmp = (pcmconf8xx_t *)(&(((immap_t *)IMAP_ADDR)->im_pcmcia));
if (!pcmcia_base) {
/*
* Read out PCMCIA registers. Since the reset values
* are undefined, we sure hope that they have been
* set up by firmware
*/
/* Scan all registers for valid settings */
pcmcia_phy_base = 0xFFFFFFFF;
pcmcia_phy_end = 0;
/* br0 is start of brX and orX regs */
win = (pcmcia_win_t *) \
(&(((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0));
for (i = 0; i < 8; i++) {
if (win->or & 1) { /* This bank is marked as valid */
if (win->br < pcmcia_phy_base) {
pcmcia_phy_base = win->br;
}
if ((win->br + PCMCIA_MEM_SIZE) > pcmcia_phy_end) {
pcmcia_phy_end = win->br + PCMCIA_MEM_SIZE;
}
/* Check which slot that has been defined */
_slot_ = (win->or >> 2) & 1;
} /* Valid bank */
win++;
} /* for */
printk ("PCMCIA slot %c: phys mem %08x...%08x (size %08x)\n",
'A' + _slot_,
pcmcia_phy_base, pcmcia_phy_end,
pcmcia_phy_end - pcmcia_phy_base);
pcmcia_base=(unsigned long)ioremap(pcmcia_phy_base,
pcmcia_phy_end-pcmcia_phy_base);
#ifdef DEBUG
printk ("PCMCIA virt base: %08lx\n", pcmcia_base);
#endif
/* Compute clock cycles for PIO timings */
for (i=0; i<6; ++i) {
bd_t *binfo = (bd_t *)__res;
hold_time[i] =
PCMCIA_MK_CLKS (hold_time[i],
binfo->bi_busfreq);
ide_pio_clocks[i].setup_time =
PCMCIA_MK_CLKS (ide_pio_timings[i].setup_time,
binfo->bi_busfreq);
ide_pio_clocks[i].active_time =
PCMCIA_MK_CLKS (ide_pio_timings[i].active_time,
binfo->bi_busfreq);
ide_pio_clocks[i].cycle_time =
PCMCIA_MK_CLKS (ide_pio_timings[i].cycle_time,
binfo->bi_busfreq);
#if 0
printk ("PIO mode %d timings: %d/%d/%d => %d/%d/%d\n",
i,
ide_pio_clocks[i].setup_time,
ide_pio_clocks[i].active_time,
ide_pio_clocks[i].hold_time,
ide_pio_clocks[i].cycle_time,
ide_pio_timings[i].setup_time,
ide_pio_timings[i].active_time,
ide_pio_timings[i].hold_time,
ide_pio_timings[i].cycle_time);
#endif
}
}
if (data_port >= MAX_HWIFS)
return;
if (_slot_ == -1) {
printk ("PCMCIA slot has not been defined! Using A as default\n");
_slot_ = 0;
}
#ifdef CONFIG_IDE_8xx_PCCARD
#ifdef DEBUG
printk ("PIPR = 0x%08X slot %c ==> mask = 0x%X\n",
pcmp->pcmc_pipr,
'A' + _slot_,
M8XX_PCMCIA_CD1(_slot_) | M8XX_PCMCIA_CD2(_slot_) );
#endif /* DEBUG */
if (pcmp->pcmc_pipr & (M8XX_PCMCIA_CD1(_slot_)|M8XX_PCMCIA_CD2(_slot_))) {
printk ("No card in slot %c: PIPR=%08x\n",
'A' + _slot_, (u32) pcmp->pcmc_pipr);
return; /* No card in slot */
}
check_ide_device (pcmcia_base);
#endif /* CONFIG_IDE_8xx_PCCARD */
base = pcmcia_base + ioport_dsc[data_port].base_off;
#ifdef DEBUG
printk ("base: %08x + %08x = %08x\n",
pcmcia_base, ioport_dsc[data_port].base_off, base);
#endif
for (i = 0; i < IDE_NR_PORTS; ++i) {
#ifdef DEBUG
printk ("port[%d]: %08x + %08x = %08x\n",
i,
base,
ioport_dsc[data_port].reg_off[i],
i, base + ioport_dsc[data_port].reg_off[i]);
#endif
*p++ = base + ioport_dsc[data_port].reg_off[i];
}
if (irq) {
#ifdef CONFIG_IDE_8xx_PCCARD
unsigned int reg;
*irq = ioport_dsc[data_port].irq;
if (_slot_)
pgcrx = &((immap_t *) IMAP_ADDR)->im_pcmcia.pcmc_pgcrb;
else
pgcrx = &((immap_t *) IMAP_ADDR)->im_pcmcia.pcmc_pgcra;
reg = *pgcrx;
reg |= mk_int_int_mask (pcmcia_schlvl) << 24;
reg |= mk_int_int_mask (pcmcia_schlvl) << 16;
*pgcrx = reg;
#else /* direct connected IDE drive, i.e. external IRQ, not the PCMCIA irq */
*irq = ioport_dsc[data_port].irq;
#endif /* CONFIG_IDE_8xx_PCCARD */
}
ide_hwifs[data_port].pio_mask = ATA_PIO4;
ide_hwifs[data_port].set_pio_mode = m8xx_ide_set_pio_mode;
hw->ack_intr = (ide_ack_intr_t *) ide_interrupt_ack;
/* Enable Harddisk Interrupt,
* and make it edge sensitive
*/
/* (11-18) Set edge detect for irq, no wakeup from low power mode */
((immap_t *)IMAP_ADDR)->im_siu_conf.sc_siel |=
(0x80000000 >> ioport_dsc[data_port].irq);
#ifdef CONFIG_IDE_8xx_PCCARD
/* Make sure we don't get garbage irq */
((immap_t *) IMAP_ADDR)->im_pcmcia.pcmc_pscr = 0xFFFF;
/* Enable falling edge irq */
pcmp->pcmc_per = 0x100000 >> (16 * _slot_);
#endif /* CONFIG_IDE_8xx_PCCARD */
} /* m8xx_ide_init_hwif_ports() using 8xx internal PCMCIA interface */
#endif /* CONFIG_IDE_8xx_PCCARD || CONFIG_IDE_8xx_DIRECT */
/*
* m8xx_ide_init_hwif_ports for a direct IDE interface _not_ using
* MPC8xx's internal PCMCIA interface
*/
#if defined(CONFIG_IDE_EXT_DIRECT)
void m8xx_ide_init_hwif_ports (hw_regs_t *hw,
unsigned long data_port, unsigned long ctrl_port, int *irq)
{
unsigned long *p = hw->io_ports;
int i;
u32 ide_phy_base;
u32 ide_phy_end;
static unsigned long ide_base = 0;
unsigned long base;
*p = 0;
if (irq)
*irq = 0;
if (!ide_base) {
/* TODO:
* - add code to read ORx, BRx
*/
ide_phy_base = CFG_ATA_BASE_ADDR;
ide_phy_end = CFG_ATA_BASE_ADDR + 0x200;
printk ("IDE phys mem : %08x...%08x (size %08x)\n",
ide_phy_base, ide_phy_end,
ide_phy_end - ide_phy_base);
ide_base=(unsigned long)ioremap(ide_phy_base,
ide_phy_end-ide_phy_base);
#ifdef DEBUG
printk ("IDE virt base: %08lx\n", ide_base);
#endif
}
if (data_port >= MAX_HWIFS)
return;
base = ide_base + ioport_dsc[data_port].base_off;
#ifdef DEBUG
printk ("base: %08x + %08x = %08x\n",
ide_base, ioport_dsc[data_port].base_off, base);
#endif
for (i = 0; i < IDE_NR_PORTS; ++i) {
#ifdef DEBUG
printk ("port[%d]: %08x + %08x = %08x\n",
i,
base,
ioport_dsc[data_port].reg_off[i],
i, base + ioport_dsc[data_port].reg_off[i]);
#endif
*p++ = base + ioport_dsc[data_port].reg_off[i];
}
if (irq) {
/* direct connected IDE drive, i.e. external IRQ */
*irq = ioport_dsc[data_port].irq;
}
ide_hwifs[data_port].pio_mask = ATA_PIO4;
ide_hwifs[data_port].set_pio_mode = m8xx_ide_set_pio_mode;
hw->ack_intr = (ide_ack_intr_t *) ide_interrupt_ack;
/* Enable Harddisk Interrupt,
* and make it edge sensitive
*/
/* (11-18) Set edge detect for irq, no wakeup from low power mode */
((immap_t *) IMAP_ADDR)->im_siu_conf.sc_siel |=
(0x80000000 >> ioport_dsc[data_port].irq);
} /* m8xx_ide_init_hwif_ports() for CONFIG_IDE_8xx_DIRECT */
#endif /* CONFIG_IDE_8xx_DIRECT */
/* -------------------------------------------------------------------- */
/* PCMCIA Timing */
#ifndef PCMCIA_SHT
#define PCMCIA_SHT(t) ((t & 0x0F)<<16) /* Strobe Hold Time */
#define PCMCIA_SST(t) ((t & 0x0F)<<12) /* Strobe Setup Time */
#define PCMCIA_SL(t) ((t==32) ? 0 : ((t & 0x1F)<<7)) /* Strobe Length */
#endif
/* Calculate PIO timings */
static void m8xx_ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
{
#if defined(CONFIG_IDE_8xx_PCCARD) || defined(CONFIG_IDE_8xx_DIRECT)
volatile pcmconf8xx_t *pcmp;
ulong timing, mask, reg;
pcmp = (pcmconf8xx_t *)(&(((immap_t *)IMAP_ADDR)->im_pcmcia));
mask = ~(PCMCIA_SHT(0xFF) | PCMCIA_SST(0xFF) | PCMCIA_SL(0xFF));
timing = PCMCIA_SHT(hold_time[pio] )
| PCMCIA_SST(ide_pio_clocks[pio].setup_time )
| PCMCIA_SL (ide_pio_clocks[pio].active_time)
;
#if 1
printk ("Setting timing bits 0x%08lx in PCMCIA controller\n", timing);
#endif
if ((reg = pcmp->pcmc_por0 & mask) != 0)
pcmp->pcmc_por0 = reg | timing;
if ((reg = pcmp->pcmc_por1 & mask) != 0)
pcmp->pcmc_por1 = reg | timing;
if ((reg = pcmp->pcmc_por2 & mask) != 0)
pcmp->pcmc_por2 = reg | timing;
if ((reg = pcmp->pcmc_por3 & mask) != 0)
pcmp->pcmc_por3 = reg | timing;
if ((reg = pcmp->pcmc_por4 & mask) != 0)
pcmp->pcmc_por4 = reg | timing;
if ((reg = pcmp->pcmc_por5 & mask) != 0)
pcmp->pcmc_por5 = reg | timing;
if ((reg = pcmp->pcmc_por6 & mask) != 0)
pcmp->pcmc_por6 = reg | timing;
if ((reg = pcmp->pcmc_por7 & mask) != 0)
pcmp->pcmc_por7 = reg | timing;
#elif defined(CONFIG_IDE_EXT_DIRECT)
printk("%s[%d] %s: not implemented yet!\n",
__FILE__,__LINE__,__FUNCTION__);
#endif /* defined(CONFIG_IDE_8xx_PCCARD) || defined(CONFIG_IDE_8xx_PCMCIA */
}
static void
ide_interrupt_ack (void *dev)
{
#ifdef CONFIG_IDE_8xx_PCCARD
u_int pscr, pipr;
#if (PCMCIA_SOCKETS_NO == 2)
u_int _slot_;
#endif
/* get interrupt sources */
pscr = ((volatile immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr;
pipr = ((volatile immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pipr;
/*
* report only if both card detect signals are the same
* not too nice done,
* we depend on that CD2 is the bit to the left of CD1...
*/
if(_slot_==-1){
printk("PCMCIA slot has not been defined! Using A as default\n");
_slot_=0;
}
if(((pipr & M8XX_PCMCIA_CD2(_slot_)) >> 1) ^
(pipr & M8XX_PCMCIA_CD1(_slot_)) ) {
printk ("card detect interrupt\n");
}
/* clear the interrupt sources */
((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr = pscr;
#else /* ! CONFIG_IDE_8xx_PCCARD */
/*
* Only CONFIG_IDE_8xx_PCCARD is using the interrupt of the
* MPC8xx's PCMCIA controller, so there is nothing to be done here
* for CONFIG_IDE_8xx_DIRECT and CONFIG_IDE_EXT_DIRECT.
* The interrupt is handled somewhere else. -- Steven
*/
#endif /* CONFIG_IDE_8xx_PCCARD */
}
/*
* CIS Tupel codes
*/
#define CISTPL_NULL 0x00
#define CISTPL_DEVICE 0x01
#define CISTPL_LONGLINK_CB 0x02
#define CISTPL_INDIRECT 0x03
#define CISTPL_CONFIG_CB 0x04
#define CISTPL_CFTABLE_ENTRY_CB 0x05
#define CISTPL_LONGLINK_MFC 0x06
#define CISTPL_BAR 0x07
#define CISTPL_PWR_MGMNT 0x08
#define CISTPL_EXTDEVICE 0x09
#define CISTPL_CHECKSUM 0x10
#define CISTPL_LONGLINK_A 0x11
#define CISTPL_LONGLINK_C 0x12
#define CISTPL_LINKTARGET 0x13
#define CISTPL_NO_LINK 0x14
#define CISTPL_VERS_1 0x15
#define CISTPL_ALTSTR 0x16
#define CISTPL_DEVICE_A 0x17
#define CISTPL_JEDEC_C 0x18
#define CISTPL_JEDEC_A 0x19
#define CISTPL_CONFIG 0x1a
#define CISTPL_CFTABLE_ENTRY 0x1b
#define CISTPL_DEVICE_OC 0x1c
#define CISTPL_DEVICE_OA 0x1d
#define CISTPL_DEVICE_GEO 0x1e
#define CISTPL_DEVICE_GEO_A 0x1f
#define CISTPL_MANFID 0x20
#define CISTPL_FUNCID 0x21
#define CISTPL_FUNCE 0x22
#define CISTPL_SWIL 0x23
#define CISTPL_END 0xff
/*
* CIS Function ID codes
*/
#define CISTPL_FUNCID_MULTI 0x00
#define CISTPL_FUNCID_MEMORY 0x01
#define CISTPL_FUNCID_SERIAL 0x02
#define CISTPL_FUNCID_PARALLEL 0x03
#define CISTPL_FUNCID_FIXED 0x04
#define CISTPL_FUNCID_VIDEO 0x05
#define CISTPL_FUNCID_NETWORK 0x06
#define CISTPL_FUNCID_AIMS 0x07
#define CISTPL_FUNCID_SCSI 0x08
/*
* Fixed Disk FUNCE codes
*/
#define CISTPL_IDE_INTERFACE 0x01
#define CISTPL_FUNCE_IDE_IFACE 0x01
#define CISTPL_FUNCE_IDE_MASTER 0x02
#define CISTPL_FUNCE_IDE_SLAVE 0x03
/* First feature byte */
#define CISTPL_IDE_SILICON 0x04
#define CISTPL_IDE_UNIQUE 0x08
#define CISTPL_IDE_DUAL 0x10
/* Second feature byte */
#define CISTPL_IDE_HAS_SLEEP 0x01
#define CISTPL_IDE_HAS_STANDBY 0x02
#define CISTPL_IDE_HAS_IDLE 0x04
#define CISTPL_IDE_LOW_POWER 0x08
#define CISTPL_IDE_REG_INHIBIT 0x10
#define CISTPL_IDE_HAS_INDEX 0x20
#define CISTPL_IDE_IOIS16 0x40
/* -------------------------------------------------------------------- */
#define MAX_TUPEL_SZ 512
#define MAX_FEATURES 4
static int check_ide_device (unsigned long base)
{
volatile u8 *ident = NULL;
volatile u8 *feature_p[MAX_FEATURES];
volatile u8 *p, *start;
int n_features = 0;
u8 func_id = ~0;
u8 code, len;
unsigned short config_base = 0;
int found = 0;
int i;
#ifdef DEBUG
printk ("PCMCIA MEM: %08lX\n", base);
#endif
start = p = (volatile u8 *) base;
while ((p - start) < MAX_TUPEL_SZ) {
code = *p; p += 2;
if (code == 0xFF) { /* End of chain */
break;
}
len = *p; p += 2;
#ifdef DEBUG_PCMCIA
{ volatile u8 *q = p;
printk ("\nTuple code %02x length %d\n\tData:",
code, len);
for (i = 0; i < len; ++i) {
printk (" %02x", *q);
q+= 2;
}
}
#endif /* DEBUG_PCMCIA */
switch (code) {
case CISTPL_VERS_1:
ident = p + 4;
break;
case CISTPL_FUNCID:
func_id = *p;
break;
case CISTPL_FUNCE:
if (n_features < MAX_FEATURES)
feature_p[n_features++] = p;
break;
case CISTPL_CONFIG:
config_base = (*(p+6) << 8) + (*(p+4));
default:
break;
}
p += 2 * len;
}
found = identify (ident);
if (func_id != ((u8)~0)) {
print_funcid (func_id);
if (func_id == CISTPL_FUNCID_FIXED)
found = 1;
else
return (1); /* no disk drive */
}
for (i=0; i<n_features; ++i) {
print_fixed (feature_p[i]);
}
if (!found) {
printk ("unknown card type\n");
return (1);
}
/* set level mode irq and I/O mapped device in config reg*/
*((u8 *)(base + config_base)) = 0x41;
return (0);
}
/* ------------------------------------------------------------------------- */
static void print_funcid (int func)
{
switch (func) {
case CISTPL_FUNCID_MULTI:
printk (" Multi-Function");
break;
case CISTPL_FUNCID_MEMORY:
printk (" Memory");
break;
case CISTPL_FUNCID_SERIAL:
printk (" Serial Port");
break;
case CISTPL_FUNCID_PARALLEL:
printk (" Parallel Port");
break;
case CISTPL_FUNCID_FIXED:
printk (" Fixed Disk");
break;
case CISTPL_FUNCID_VIDEO:
printk (" Video Adapter");
break;
case CISTPL_FUNCID_NETWORK:
printk (" Network Adapter");
break;
case CISTPL_FUNCID_AIMS:
printk (" AIMS Card");
break;
case CISTPL_FUNCID_SCSI:
printk (" SCSI Adapter");
break;
default:
printk (" Unknown");
break;
}
printk (" Card\n");
}
/* ------------------------------------------------------------------------- */
static void print_fixed (volatile u8 *p)
{
if (p == NULL)
return;
switch (*p) {
case CISTPL_FUNCE_IDE_IFACE:
{ u8 iface = *(p+2);
printk ((iface == CISTPL_IDE_INTERFACE) ? " IDE" : " unknown");
printk (" interface ");
break;
}
case CISTPL_FUNCE_IDE_MASTER:
case CISTPL_FUNCE_IDE_SLAVE:
{ u8 f1 = *(p+2);
u8 f2 = *(p+4);
printk ((f1 & CISTPL_IDE_SILICON) ? " [silicon]" : " [rotating]");
if (f1 & CISTPL_IDE_UNIQUE)
printk (" [unique]");
printk ((f1 & CISTPL_IDE_DUAL) ? " [dual]" : " [single]");
if (f2 & CISTPL_IDE_HAS_SLEEP)
printk (" [sleep]");
if (f2 & CISTPL_IDE_HAS_STANDBY)
printk (" [standby]");
if (f2 & CISTPL_IDE_HAS_IDLE)
printk (" [idle]");
if (f2 & CISTPL_IDE_LOW_POWER)
printk (" [low power]");
if (f2 & CISTPL_IDE_REG_INHIBIT)
printk (" [reg inhibit]");
if (f2 & CISTPL_IDE_HAS_INDEX)
printk (" [index]");
if (f2 & CISTPL_IDE_IOIS16)
printk (" [IOis16]");
break;
}
}
printk ("\n");
}
/* ------------------------------------------------------------------------- */
#define MAX_IDENT_CHARS 64
#define MAX_IDENT_FIELDS 4
static u8 *known_cards[] = {
"ARGOSY PnPIDE D5",
NULL
};
static int identify (volatile u8 *p)
{
u8 id_str[MAX_IDENT_CHARS];
u8 data;
u8 *t;
u8 **card;
int i, done;
if (p == NULL)
return (0); /* Don't know */
t = id_str;
done =0;
for (i=0; i<=4 && !done; ++i, p+=2) {
while ((data = *p) != '\0') {
if (data == 0xFF) {
done = 1;
break;
}
*t++ = data;
if (t == &id_str[MAX_IDENT_CHARS-1]) {
done = 1;
break;
}
p += 2;
}
if (!done)
*t++ = ' ';
}
*t = '\0';
while (--t > id_str) {
if (*t == ' ')
*t = '\0';
else
break;
}
printk ("Card ID: %s\n", id_str);
for (card=known_cards; *card; ++card) {
if (strcmp(*card, id_str) == 0) { /* found! */
return (1);
}
}
return (0); /* don't know */
}
void m8xx_ide_init(void)
{
ppc_ide_md.default_irq = m8xx_ide_default_irq;
ppc_ide_md.default_io_base = m8xx_ide_default_io_base;
ppc_ide_md.ide_init_hwif = m8xx_ide_init_hwif_ports;
}
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