diff options
Diffstat (limited to 'drivers/ide')
| -rw-r--r-- | drivers/ide/pci/cmd640.c | 48 |
1 files changed, 28 insertions, 20 deletions
diff --git a/drivers/ide/pci/cmd640.c b/drivers/ide/pci/cmd640.c index f369645e4d1..0e9275d7459 100644 --- a/drivers/ide/pci/cmd640.c +++ b/drivers/ide/pci/cmd640.c @@ -185,6 +185,8 @@ static u8 recovery_counts[4] = {16, 16, 16, 16}; /* Recovery count (encoded) */ #endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */ +static DEFINE_SPINLOCK(cmd640_lock); + /* * These are initialized to point at the devices we control */ @@ -258,12 +260,12 @@ static u8 get_cmd640_reg_vlb (u16 reg) static u8 get_cmd640_reg(u16 reg) { - u8 b; unsigned long flags; + u8 b; - spin_lock_irqsave(&ide_lock, flags); + spin_lock_irqsave(&cmd640_lock, flags); b = __get_cmd640_reg(reg); - spin_unlock_irqrestore(&ide_lock, flags); + spin_unlock_irqrestore(&cmd640_lock, flags); return b; } @@ -271,9 +273,9 @@ static void put_cmd640_reg(u16 reg, u8 val) { unsigned long flags; - spin_lock_irqsave(&ide_lock, flags); + spin_lock_irqsave(&cmd640_lock, flags); __put_cmd640_reg(reg,val); - spin_unlock_irqrestore(&ide_lock, flags); + spin_unlock_irqrestore(&cmd640_lock, flags); } static int __init match_pci_cmd640_device (void) @@ -351,7 +353,7 @@ static int __init secondary_port_responding (void) { unsigned long flags; - spin_lock_irqsave(&ide_lock, flags); + spin_lock_irqsave(&cmd640_lock, flags); outb_p(0x0a, 0x170 + IDE_SELECT_OFFSET); /* select drive0 */ udelay(100); @@ -359,11 +361,11 @@ static int __init secondary_port_responding (void) outb_p(0x1a, 0x170 + IDE_SELECT_OFFSET); /* select drive1 */ udelay(100); if ((inb_p(0x170 + IDE_SELECT_OFFSET) & 0x1f) != 0x1a) { - spin_unlock_irqrestore(&ide_lock, flags); + spin_unlock_irqrestore(&cmd640_lock, flags); return 0; /* nothing responded */ } } - spin_unlock_irqrestore(&ide_lock, flags); + spin_unlock_irqrestore(&cmd640_lock, flags); return 1; /* success */ } @@ -440,11 +442,11 @@ static void __init setup_device_ptrs (void) static void set_prefetch_mode (unsigned int index, int mode) { ide_drive_t *drive = cmd_drives[index]; + unsigned long flags; int reg = prefetch_regs[index]; u8 b; - unsigned long flags; - spin_lock_irqsave(&ide_lock, flags); + spin_lock_irqsave(&cmd640_lock, flags); b = __get_cmd640_reg(reg); if (mode) { /* want prefetch on? */ #if CMD640_PREFETCH_MASKS @@ -460,7 +462,7 @@ static void set_prefetch_mode (unsigned int index, int mode) b |= prefetch_masks[index]; /* disable prefetch */ } __put_cmd640_reg(reg, b); - spin_unlock_irqrestore(&ide_lock, flags); + spin_unlock_irqrestore(&cmd640_lock, flags); } /* @@ -561,7 +563,7 @@ static void program_drive_counts (unsigned int index) /* * Now that everything is ready, program the new timings */ - spin_lock_irqsave(&ide_lock, flags); + spin_lock_irqsave(&cmd640_lock, flags); /* * Program the address_setup clocks into ARTTIM reg, * and then the active/recovery counts into the DRWTIM reg @@ -570,7 +572,7 @@ static void program_drive_counts (unsigned int index) setup_count |= __get_cmd640_reg(arttim_regs[index]) & 0x3f; __put_cmd640_reg(arttim_regs[index], setup_count); __put_cmd640_reg(drwtim_regs[index], pack_nibbles(active_count, recovery_count)); - spin_unlock_irqrestore(&ide_lock, flags); + spin_unlock_irqrestore(&cmd640_lock, flags); } /* @@ -630,6 +632,7 @@ static void cmd640_set_mode (unsigned int index, u8 pio_mode, unsigned int cycle static void cmd640_set_pio_mode(ide_drive_t *drive, const u8 pio) { + unsigned long flags; unsigned int index = 0, cycle_time; u8 b; @@ -652,7 +655,12 @@ static void cmd640_set_pio_mode(ide_drive_t *drive, const u8 pio) case 8: /* set prefetch off */ case 9: /* set prefetch on */ + /* + * take ide_lock for drive->[no_]unmask/[no_]io_32bit + */ + spin_lock_irqsave(&ide_lock, flags); set_prefetch_mode(index, pio & 1); + spin_unlock_irqrestore(&ide_lock, flags); printk("%s: %sabled cmd640 prefetch\n", drive->name, (pio & 1) ? "en" : "dis"); return; } @@ -670,20 +678,20 @@ static void cmd640_set_pio_mode(ide_drive_t *drive, const u8 pio) static int pci_conf1(void) { - u32 tmp; unsigned long flags; + u32 tmp; - spin_lock_irqsave(&ide_lock, flags); + spin_lock_irqsave(&cmd640_lock, flags); outb(0x01, 0xCFB); tmp = inl(0xCF8); outl(0x80000000, 0xCF8); if (inl(0xCF8) == 0x80000000) { outl(tmp, 0xCF8); - spin_unlock_irqrestore(&ide_lock, flags); + spin_unlock_irqrestore(&cmd640_lock, flags); return 1; } outl(tmp, 0xCF8); - spin_unlock_irqrestore(&ide_lock, flags); + spin_unlock_irqrestore(&cmd640_lock, flags); return 0; } @@ -691,15 +699,15 @@ static int pci_conf2(void) { unsigned long flags; - spin_lock_irqsave(&ide_lock, flags); + spin_lock_irqsave(&cmd640_lock, flags); outb(0x00, 0xCFB); outb(0x00, 0xCF8); outb(0x00, 0xCFA); if (inb(0xCF8) == 0x00 && inb(0xCF8) == 0x00) { - spin_unlock_irqrestore(&ide_lock, flags); + spin_unlock_irqrestore(&cmd640_lock, flags); return 1; } - spin_unlock_irqrestore(&ide_lock, flags); + spin_unlock_irqrestore(&cmd640_lock, flags); return 0; } |