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android_kernel_motorola_sm6225/arch/alpha/kernel/sys_sable.c

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
/*
* linux/arch/alpha/kernel/sys_sable.c
*
* Copyright (C) 1995 David A Rusling
* Copyright (C) 1996 Jay A Estabrook
* Copyright (C) 1998, 1999 Richard Henderson
*
* Code supporting the Sable, Sable-Gamma, and Lynx systems.
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <asm/ptrace.h>
#include <asm/system.h>
#include <asm/dma.h>
#include <asm/irq.h>
#include <asm/mmu_context.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/core_t2.h>
#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
#include "pci_impl.h"
#include "machvec_impl.h"
DEFINE_SPINLOCK(sable_lynx_irq_lock);
typedef struct irq_swizzle_struct
{
char irq_to_mask[64];
char mask_to_irq[64];
/* Note mask bit is true for DISABLED irqs. */
unsigned long shadow_mask;
void (*update_irq_hw)(unsigned long bit, unsigned long mask);
void (*ack_irq_hw)(unsigned long bit);
} irq_swizzle_t;
static irq_swizzle_t *sable_lynx_irq_swizzle;
static void sable_lynx_init_irq(int nr_irqs);
#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_SABLE)
/***********************************************************************/
/*
* For SABLE, which is really baroque, we manage 40 IRQ's, but the
* hardware really only supports 24, not via normal ISA PIC,
* but cascaded custom 8259's, etc.
* 0-7 (char at 536)
* 8-15 (char at 53a)
* 16-23 (char at 53c)
*
* Summary Registers (536/53a/53c):
*
* Bit Meaning Kernel IRQ
*------------------------------------------
* 0 PCI slot 0 34
* 1 NCR810 (builtin) 33
* 2 TULIP (builtin) 32
* 3 mouse 12
* 4 PCI slot 1 35
* 5 PCI slot 2 36
* 6 keyboard 1
* 7 floppy 6
* 8 COM2 3
* 9 parallel port 7
*10 EISA irq 3 -
*11 EISA irq 4 -
*12 EISA irq 5 5
*13 EISA irq 6 -
*14 EISA irq 7 -
*15 COM1 4
*16 EISA irq 9 9
*17 EISA irq 10 10
*18 EISA irq 11 11
*19 EISA irq 12 -
*20 EISA irq 13 -
*21 EISA irq 14 14
*22 NC 15
*23 IIC -
*/
static void
sable_update_irq_hw(unsigned long bit, unsigned long mask)
{
int port = 0x537;
if (bit >= 16) {
port = 0x53d;
mask >>= 16;
} else if (bit >= 8) {
port = 0x53b;
mask >>= 8;
}
outb(mask, port);
}
static void
sable_ack_irq_hw(unsigned long bit)
{
int port, val1, val2;
if (bit >= 16) {
port = 0x53c;
val1 = 0xE0 | (bit - 16);
val2 = 0xE0 | 4;
} else if (bit >= 8) {
port = 0x53a;
val1 = 0xE0 | (bit - 8);
val2 = 0xE0 | 3;
} else {
port = 0x536;
val1 = 0xE0 | (bit - 0);
val2 = 0xE0 | 1;
}
outb(val1, port); /* ack the slave */
outb(val2, 0x534); /* ack the master */
}
static irq_swizzle_t sable_irq_swizzle = {
{
-1, 6, -1, 8, 15, 12, 7, 9, /* pseudo PIC 0-7 */
-1, 16, 17, 18, 3, -1, 21, 22, /* pseudo PIC 8-15 */
-1, -1, -1, -1, -1, -1, -1, -1, /* pseudo EISA 0-7 */
-1, -1, -1, -1, -1, -1, -1, -1, /* pseudo EISA 8-15 */
2, 1, 0, 4, 5, -1, -1, -1, /* pseudo PCI */
-1, -1, -1, -1, -1, -1, -1, -1, /* */
-1, -1, -1, -1, -1, -1, -1, -1, /* */
-1, -1, -1, -1, -1, -1, -1, -1 /* */
},
{
34, 33, 32, 12, 35, 36, 1, 6, /* mask 0-7 */
3, 7, -1, -1, 5, -1, -1, 4, /* mask 8-15 */
9, 10, 11, -1, -1, 14, 15, -1, /* mask 16-23 */
-1, -1, -1, -1, -1, -1, -1, -1, /* */
-1, -1, -1, -1, -1, -1, -1, -1, /* */
-1, -1, -1, -1, -1, -1, -1, -1, /* */
-1, -1, -1, -1, -1, -1, -1, -1, /* */
-1, -1, -1, -1, -1, -1, -1, -1 /* */
},
-1,
sable_update_irq_hw,
sable_ack_irq_hw
};
static void __init
sable_init_irq(void)
{
outb(-1, 0x537); /* slave 0 */
outb(-1, 0x53b); /* slave 1 */
outb(-1, 0x53d); /* slave 2 */
outb(0x44, 0x535); /* enable cascades in master */
sable_lynx_irq_swizzle = &sable_irq_swizzle;
sable_lynx_init_irq(40);
}
/*
* PCI Fixup configuration for ALPHA SABLE (2100).
*
* The device to slot mapping looks like:
*
* Slot Device
* 0 TULIP
* 1 SCSI
* 2 PCI-EISA bridge
* 3 none
* 4 none
* 5 none
* 6 PCI on board slot 0
* 7 PCI on board slot 1
* 8 PCI on board slot 2
*
*
* This two layered interrupt approach means that we allocate IRQ 16 and
* above for PCI interrupts. The IRQ relates to which bit the interrupt
* comes in on. This makes interrupt processing much easier.
*/
/*
* NOTE: the IRQ assignments below are arbitrary, but need to be consistent
* with the values in the irq swizzling tables above.
*/
static int __init
sable_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
static char irq_tab[9][5] __initdata = {
/*INT INTA INTB INTC INTD */
{ 32+0, 32+0, 32+0, 32+0, 32+0}, /* IdSel 0, TULIP */
{ 32+1, 32+1, 32+1, 32+1, 32+1}, /* IdSel 1, SCSI */
{ -1, -1, -1, -1, -1}, /* IdSel 2, SIO */
{ -1, -1, -1, -1, -1}, /* IdSel 3, none */
{ -1, -1, -1, -1, -1}, /* IdSel 4, none */
{ -1, -1, -1, -1, -1}, /* IdSel 5, none */
{ 32+2, 32+2, 32+2, 32+2, 32+2}, /* IdSel 6, slot 0 */
{ 32+3, 32+3, 32+3, 32+3, 32+3}, /* IdSel 7, slot 1 */
{ 32+4, 32+4, 32+4, 32+4, 32+4} /* IdSel 8, slot 2 */
};
long min_idsel = 0, max_idsel = 8, irqs_per_slot = 5;
return COMMON_TABLE_LOOKUP;
}
#endif /* defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_SABLE) */
#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_LYNX)
/***********************************************************************/
/* LYNX hardware specifics
*/
/*
* For LYNX, which is also baroque, we manage 64 IRQs, via a custom IC.
*
* Bit Meaning Kernel IRQ
*------------------------------------------
* 0
* 1
* 2
* 3 mouse 12
* 4
* 5
* 6 keyboard 1
* 7 floppy 6
* 8 COM2 3
* 9 parallel port 7
*10 EISA irq 3 -
*11 EISA irq 4 -
*12 EISA irq 5 5
*13 EISA irq 6 -
*14 EISA irq 7 -
*15 COM1 4
*16 EISA irq 9 9
*17 EISA irq 10 10
*18 EISA irq 11 11
*19 EISA irq 12 -
*20
*21 EISA irq 14 14
*22 EISA irq 15 15
*23 IIC -
*24 VGA (builtin) -
*25
*26
*27
*28 NCR810 (builtin) 28
*29
*30
*31
*32 PCI 0 slot 4 A primary bus 32
*33 PCI 0 slot 4 B primary bus 33
*34 PCI 0 slot 4 C primary bus 34
*35 PCI 0 slot 4 D primary bus
*36 PCI 0 slot 5 A primary bus
*37 PCI 0 slot 5 B primary bus
*38 PCI 0 slot 5 C primary bus
*39 PCI 0 slot 5 D primary bus
*40 PCI 0 slot 6 A primary bus
*41 PCI 0 slot 6 B primary bus
*42 PCI 0 slot 6 C primary bus
*43 PCI 0 slot 6 D primary bus
*44 PCI 0 slot 7 A primary bus
*45 PCI 0 slot 7 B primary bus
*46 PCI 0 slot 7 C primary bus
*47 PCI 0 slot 7 D primary bus
*48 PCI 0 slot 0 A secondary bus
*49 PCI 0 slot 0 B secondary bus
*50 PCI 0 slot 0 C secondary bus
*51 PCI 0 slot 0 D secondary bus
*52 PCI 0 slot 1 A secondary bus
*53 PCI 0 slot 1 B secondary bus
*54 PCI 0 slot 1 C secondary bus
*55 PCI 0 slot 1 D secondary bus
*56 PCI 0 slot 2 A secondary bus
*57 PCI 0 slot 2 B secondary bus
*58 PCI 0 slot 2 C secondary bus
*59 PCI 0 slot 2 D secondary bus
*60 PCI 0 slot 3 A secondary bus
*61 PCI 0 slot 3 B secondary bus
*62 PCI 0 slot 3 C secondary bus
*63 PCI 0 slot 3 D secondary bus
*/
static void
lynx_update_irq_hw(unsigned long bit, unsigned long mask)
{
/*
* Write the AIR register on the T3/T4 with the
* address of the IC mask register (offset 0x40)
*/
*(vulp)T2_AIR = 0x40;
mb();
*(vulp)T2_AIR; /* re-read to force write */
mb();
*(vulp)T2_DIR = mask;
mb();
mb();
}
static void
lynx_ack_irq_hw(unsigned long bit)
{
*(vulp)T2_VAR = (u_long) bit;
mb();
mb();
}
static irq_swizzle_t lynx_irq_swizzle = {
{ /* irq_to_mask */
-1, 6, -1, 8, 15, 12, 7, 9, /* pseudo PIC 0-7 */
-1, 16, 17, 18, 3, -1, 21, 22, /* pseudo PIC 8-15 */
-1, -1, -1, -1, -1, -1, -1, -1, /* pseudo */
-1, -1, -1, -1, 28, -1, -1, -1, /* pseudo */
32, 33, 34, 35, 36, 37, 38, 39, /* mask 32-39 */
40, 41, 42, 43, 44, 45, 46, 47, /* mask 40-47 */
48, 49, 50, 51, 52, 53, 54, 55, /* mask 48-55 */
56, 57, 58, 59, 60, 61, 62, 63 /* mask 56-63 */
},
{ /* mask_to_irq */
-1, -1, -1, 12, -1, -1, 1, 6, /* mask 0-7 */
3, 7, -1, -1, 5, -1, -1, 4, /* mask 8-15 */
9, 10, 11, -1, -1, 14, 15, -1, /* mask 16-23 */
-1, -1, -1, -1, 28, -1, -1, -1, /* mask 24-31 */
32, 33, 34, 35, 36, 37, 38, 39, /* mask 32-39 */
40, 41, 42, 43, 44, 45, 46, 47, /* mask 40-47 */
48, 49, 50, 51, 52, 53, 54, 55, /* mask 48-55 */
56, 57, 58, 59, 60, 61, 62, 63 /* mask 56-63 */
},
-1,
lynx_update_irq_hw,
lynx_ack_irq_hw
};
static void __init
lynx_init_irq(void)
{
sable_lynx_irq_swizzle = &lynx_irq_swizzle;
sable_lynx_init_irq(64);
}
/*
* PCI Fixup configuration for ALPHA LYNX (2100A)
*
* The device to slot mapping looks like:
*
* Slot Device
* 0 none
* 1 none
* 2 PCI-EISA bridge
* 3 PCI-PCI bridge
* 4 NCR 810 (Demi-Lynx only)
* 5 none
* 6 PCI on board slot 4
* 7 PCI on board slot 5
* 8 PCI on board slot 6
* 9 PCI on board slot 7
*
* And behind the PPB we have:
*
* 11 PCI on board slot 0
* 12 PCI on board slot 1
* 13 PCI on board slot 2
* 14 PCI on board slot 3
*/
/*
* NOTE: the IRQ assignments below are arbitrary, but need to be consistent
* with the values in the irq swizzling tables above.
*/
static int __init
lynx_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
static char irq_tab[19][5] __initdata = {
/*INT INTA INTB INTC INTD */
{ -1, -1, -1, -1, -1}, /* IdSel 13, PCEB */
{ -1, -1, -1, -1, -1}, /* IdSel 14, PPB */
{ 28, 28, 28, 28, 28}, /* IdSel 15, NCR demi */
{ -1, -1, -1, -1, -1}, /* IdSel 16, none */
{ 32, 32, 33, 34, 35}, /* IdSel 17, slot 4 */
{ 36, 36, 37, 38, 39}, /* IdSel 18, slot 5 */
{ 40, 40, 41, 42, 43}, /* IdSel 19, slot 6 */
{ 44, 44, 45, 46, 47}, /* IdSel 20, slot 7 */
{ -1, -1, -1, -1, -1}, /* IdSel 22, none */
/* The following are actually behind the PPB. */
{ -1, -1, -1, -1, -1}, /* IdSel 16 none */
{ 28, 28, 28, 28, 28}, /* IdSel 17 NCR lynx */
{ -1, -1, -1, -1, -1}, /* IdSel 18 none */
{ -1, -1, -1, -1, -1}, /* IdSel 19 none */
{ -1, -1, -1, -1, -1}, /* IdSel 20 none */
{ -1, -1, -1, -1, -1}, /* IdSel 21 none */
{ 48, 48, 49, 50, 51}, /* IdSel 22 slot 0 */
{ 52, 52, 53, 54, 55}, /* IdSel 23 slot 1 */
{ 56, 56, 57, 58, 59}, /* IdSel 24 slot 2 */
{ 60, 60, 61, 62, 63} /* IdSel 25 slot 3 */
};
const long min_idsel = 2, max_idsel = 20, irqs_per_slot = 5;
return COMMON_TABLE_LOOKUP;
}
static u8 __init
lynx_swizzle(struct pci_dev *dev, u8 *pinp)
{
int slot, pin = *pinp;
if (dev->bus->number == 0) {
slot = PCI_SLOT(dev->devfn);
}
/* Check for the built-in bridge */
else if (PCI_SLOT(dev->bus->self->devfn) == 3) {
slot = PCI_SLOT(dev->devfn) + 11;
}
else
{
/* Must be a card-based bridge. */
do {
if (PCI_SLOT(dev->bus->self->devfn) == 3) {
slot = PCI_SLOT(dev->devfn) + 11;
break;
}
pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn)) ;
/* Move up the chain of bridges. */
dev = dev->bus->self;
/* Slot of the next bridge. */
slot = PCI_SLOT(dev->devfn);
} while (dev->bus->self);
}
*pinp = pin;
return slot;
}
#endif /* defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_LYNX) */
/***********************************************************************/
/* GENERIC irq routines */
static inline void
sable_lynx_enable_irq(unsigned int irq)
{
unsigned long bit, mask;
bit = sable_lynx_irq_swizzle->irq_to_mask[irq];
spin_lock(&sable_lynx_irq_lock);
mask = sable_lynx_irq_swizzle->shadow_mask &= ~(1UL << bit);
sable_lynx_irq_swizzle->update_irq_hw(bit, mask);
spin_unlock(&sable_lynx_irq_lock);
#if 0
printk("%s: mask 0x%lx bit 0x%x irq 0x%x\n",
alpha: remove remaining __FUNCTION__ occurrences __FUNCTION__ is gcc-specific, use __func__ The change in pci-iommu,c should be safe as arena has not been assigned when we get to this point. Some were within #if 0 blocks, have changed them and left the blocks as they appear to be debugging infrastructure. A #define FN __FUNCTION__ was removed and occurances of FN were replaced with __func__ as well. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28 11:13:46 +02:00
__func__, mask, bit, irq);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
#endif
}
static void
sable_lynx_disable_irq(unsigned int irq)
{
unsigned long bit, mask;
bit = sable_lynx_irq_swizzle->irq_to_mask[irq];
spin_lock(&sable_lynx_irq_lock);
mask = sable_lynx_irq_swizzle->shadow_mask |= 1UL << bit;
sable_lynx_irq_swizzle->update_irq_hw(bit, mask);
spin_unlock(&sable_lynx_irq_lock);
#if 0
printk("%s: mask 0x%lx bit 0x%x irq 0x%x\n",
alpha: remove remaining __FUNCTION__ occurrences __FUNCTION__ is gcc-specific, use __func__ The change in pci-iommu,c should be safe as arena has not been assigned when we get to this point. Some were within #if 0 blocks, have changed them and left the blocks as they appear to be debugging infrastructure. A #define FN __FUNCTION__ was removed and occurances of FN were replaced with __func__ as well. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28 11:13:46 +02:00
__func__, mask, bit, irq);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
#endif
}
static unsigned int
sable_lynx_startup_irq(unsigned int irq)
{
sable_lynx_enable_irq(irq);
return 0;
}
static void
sable_lynx_end_irq(unsigned int irq)
{
if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
sable_lynx_enable_irq(irq);
}
static void
sable_lynx_mask_and_ack_irq(unsigned int irq)
{
unsigned long bit, mask;
bit = sable_lynx_irq_swizzle->irq_to_mask[irq];
spin_lock(&sable_lynx_irq_lock);
mask = sable_lynx_irq_swizzle->shadow_mask |= 1UL << bit;
sable_lynx_irq_swizzle->update_irq_hw(bit, mask);
sable_lynx_irq_swizzle->ack_irq_hw(bit);
spin_unlock(&sable_lynx_irq_lock);
}
static struct hw_interrupt_type sable_lynx_irq_type = {
.typename = "SABLE/LYNX",
.startup = sable_lynx_startup_irq,
.shutdown = sable_lynx_disable_irq,
.enable = sable_lynx_enable_irq,
.disable = sable_lynx_disable_irq,
.ack = sable_lynx_mask_and_ack_irq,
.end = sable_lynx_end_irq,
};
static void
[PATCH] alpha pt_regs cleanups: device_interrupt callers of ->device_interrupt() do set_irq_regs() now; pt_regs argument removed, remaining uses of regs in instances of ->device_interrupt() are switched to get_irq_regs() and will be gone in the next patch. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-08 15:36:08 +02:00
sable_lynx_srm_device_interrupt(unsigned long vector)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
{
/* Note that the vector reported by the SRM PALcode corresponds
to the interrupt mask bits, but we have to manage via the
so-called legacy IRQs for many common devices. */
int bit, irq;
bit = (vector - 0x800) >> 4;
irq = sable_lynx_irq_swizzle->mask_to_irq[bit];
#if 0
printk("%s: vector 0x%lx bit 0x%x irq 0x%x\n",
alpha: remove remaining __FUNCTION__ occurrences __FUNCTION__ is gcc-specific, use __func__ The change in pci-iommu,c should be safe as arena has not been assigned when we get to this point. Some were within #if 0 blocks, have changed them and left the blocks as they appear to be debugging infrastructure. A #define FN __FUNCTION__ was removed and occurances of FN were replaced with __func__ as well. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28 11:13:46 +02:00
__func__, vector, bit, irq);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
#endif
[PATCH] alpha pt_regs cleanups: handle_irq() isa_no_iack_sc_device_interrupt() always gets get_irq_regs() as argument; kill that argument. All but two callers of handle_irq() pass get_irq_regs() as argument; convert the remaining two, kill set_irq_regs() inside handle_irq(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-08 15:37:32 +02:00
handle_irq(irq);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
}
static void __init
sable_lynx_init_irq(int nr_irqs)
{
long i;
for (i = 0; i < nr_irqs; ++i) {
irq_desc[i].status = IRQ_DISABLED | IRQ_LEVEL;
[PATCH] genirq: rename desc->handler to desc->chip This patch-queue improves the generic IRQ layer to be truly generic, by adding various abstractions and features to it, without impacting existing functionality. While the queue can be best described as "fix and improve everything in the generic IRQ layer that we could think of", and thus it consists of many smaller features and lots of cleanups, the one feature that stands out most is the new 'irq chip' abstraction. The irq-chip abstraction is about describing and coding and IRQ controller driver by mapping its raw hardware capabilities [and quirks, if needed] in a straightforward way, without having to think about "IRQ flow" (level/edge/etc.) type of details. This stands in contrast with the current 'irq-type' model of genirq architectures, which 'mixes' raw hardware capabilities with 'flow' details. The patchset supports both types of irq controller designs at once, and converts i386 and x86_64 to the new irq-chip design. As a bonus side-effect of the irq-chip approach, chained interrupt controllers (master/slave PIC constructs, etc.) are now supported by design as well. The end result of this patchset intends to be simpler architecture-level code and more consolidation between architectures. We reused many bits of code and many concepts from Russell King's ARM IRQ layer, the merging of which was one of the motivations for this patchset. This patch: rename desc->handler to desc->chip. Originally i did not want to do this, because it's a big patch. But having both "desc->handler", "desc->handle_irq" and "action->handler" caused a large degree of confusion and made the code appear alot less clean than it truly is. I have also attempted a dual approach as well by introducing a desc->chip alias - but that just wasnt robust enough and broke frequently. So lets get over with this quickly. The conversion was done automatically via scripts and converts all the code in the kernel. This renaming patch is the first one amongst the patches, so that the remaining patches can stay flexible and can be merged and split up without having some big monolithic patch act as a merge barrier. [akpm@osdl.org: build fix] [akpm@osdl.org: another build fix] Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-29 11:24:36 +02:00
irq_desc[i].chip = &sable_lynx_irq_type;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
}
common_init_isa_dma();
}
static void __init
sable_lynx_init_pci(void)
{
common_init_pci();
}
/*****************************************************************/
/*
* The System Vectors
*
* In order that T2_HAE_ADDRESS should be a constant, we play
* these games with GAMMA_BIAS.
*/
#if defined(CONFIG_ALPHA_GENERIC) || \
(defined(CONFIG_ALPHA_SABLE) && !defined(CONFIG_ALPHA_GAMMA))
#undef GAMMA_BIAS
#define GAMMA_BIAS 0
struct alpha_machine_vector sable_mv __initmv = {
.vector_name = "Sable",
DO_EV4_MMU,
DO_DEFAULT_RTC,
DO_T2_IO,
.machine_check = t2_machine_check,
.max_isa_dma_address = ALPHA_SABLE_MAX_ISA_DMA_ADDRESS,
.min_io_address = EISA_DEFAULT_IO_BASE,
.min_mem_address = T2_DEFAULT_MEM_BASE,
.nr_irqs = 40,
.device_interrupt = sable_lynx_srm_device_interrupt,
.init_arch = t2_init_arch,
.init_irq = sable_init_irq,
.init_rtc = common_init_rtc,
.init_pci = sable_lynx_init_pci,
.kill_arch = t2_kill_arch,
.pci_map_irq = sable_map_irq,
.pci_swizzle = common_swizzle,
.sys = { .t2 = {
.gamma_bias = 0
} }
};
ALIAS_MV(sable)
#endif /* GENERIC || (SABLE && !GAMMA) */
#if defined(CONFIG_ALPHA_GENERIC) || \
(defined(CONFIG_ALPHA_SABLE) && defined(CONFIG_ALPHA_GAMMA))
#undef GAMMA_BIAS
#define GAMMA_BIAS _GAMMA_BIAS
struct alpha_machine_vector sable_gamma_mv __initmv = {
.vector_name = "Sable-Gamma",
DO_EV5_MMU,
DO_DEFAULT_RTC,
DO_T2_IO,
.machine_check = t2_machine_check,
.max_isa_dma_address = ALPHA_SABLE_MAX_ISA_DMA_ADDRESS,
.min_io_address = EISA_DEFAULT_IO_BASE,
.min_mem_address = T2_DEFAULT_MEM_BASE,
.nr_irqs = 40,
.device_interrupt = sable_lynx_srm_device_interrupt,
.init_arch = t2_init_arch,
.init_irq = sable_init_irq,
.init_rtc = common_init_rtc,
.init_pci = sable_lynx_init_pci,
.kill_arch = t2_kill_arch,
.pci_map_irq = sable_map_irq,
.pci_swizzle = common_swizzle,
.sys = { .t2 = {
.gamma_bias = _GAMMA_BIAS
} }
};
ALIAS_MV(sable_gamma)
#endif /* GENERIC || (SABLE && GAMMA) */
#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_LYNX)
#undef GAMMA_BIAS
#define GAMMA_BIAS _GAMMA_BIAS
struct alpha_machine_vector lynx_mv __initmv = {
.vector_name = "Lynx",
DO_EV4_MMU,
DO_DEFAULT_RTC,
DO_T2_IO,
.machine_check = t2_machine_check,
.max_isa_dma_address = ALPHA_SABLE_MAX_ISA_DMA_ADDRESS,
.min_io_address = EISA_DEFAULT_IO_BASE,
.min_mem_address = T2_DEFAULT_MEM_BASE,
.nr_irqs = 64,
.device_interrupt = sable_lynx_srm_device_interrupt,
.init_arch = t2_init_arch,
.init_irq = lynx_init_irq,
.init_rtc = common_init_rtc,
.init_pci = sable_lynx_init_pci,
.kill_arch = t2_kill_arch,
.pci_map_irq = lynx_map_irq,
.pci_swizzle = lynx_swizzle,
.sys = { .t2 = {
.gamma_bias = _GAMMA_BIAS
} }
};
ALIAS_MV(lynx)
#endif /* GENERIC || LYNX */
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