2019-06-04 15:11:33 +07:00
|
|
|
// SPDX-License-Identifier: GPL-2.0-only
|
2005-04-17 05:20:36 +07:00
|
|
|
/*
|
|
|
|
* linux/arch/arm/kernel/dec21285.c: PCI functions for DC21285
|
|
|
|
*
|
|
|
|
* Copyright (C) 1998-2001 Russell King
|
|
|
|
* Copyright (C) 1998-2000 Phil Blundell
|
|
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/pci.h>
|
|
|
|
#include <linux/interrupt.h>
|
|
|
|
#include <linux/mm.h>
|
|
|
|
#include <linux/slab.h>
|
|
|
|
#include <linux/init.h>
|
|
|
|
#include <linux/ioport.h>
|
2006-10-15 19:48:37 +07:00
|
|
|
#include <linux/irq.h>
|
2008-09-06 18:10:45 +07:00
|
|
|
#include <linux/io.h>
|
2008-12-06 15:25:16 +07:00
|
|
|
#include <linux/spinlock.h>
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
#include <asm/irq.h>
|
|
|
|
#include <asm/mach/pci.h>
|
|
|
|
#include <asm/hardware/dec21285.h>
|
|
|
|
|
|
|
|
#define MAX_SLOTS 21
|
|
|
|
|
|
|
|
#define PCICMD_ABORT ((PCI_STATUS_REC_MASTER_ABORT| \
|
|
|
|
PCI_STATUS_REC_TARGET_ABORT)<<16)
|
|
|
|
|
|
|
|
#define PCICMD_ERROR_BITS ((PCI_STATUS_DETECTED_PARITY | \
|
|
|
|
PCI_STATUS_REC_MASTER_ABORT | \
|
|
|
|
PCI_STATUS_REC_TARGET_ABORT | \
|
|
|
|
PCI_STATUS_PARITY) << 16)
|
|
|
|
|
|
|
|
extern int setup_arm_irq(int, struct irqaction *);
|
|
|
|
|
|
|
|
static unsigned long
|
|
|
|
dc21285_base_address(struct pci_bus *bus, unsigned int devfn)
|
|
|
|
{
|
|
|
|
unsigned long addr = 0;
|
|
|
|
|
|
|
|
if (bus->number == 0) {
|
|
|
|
if (PCI_SLOT(devfn) == 0)
|
|
|
|
/*
|
|
|
|
* For devfn 0, point at the 21285
|
|
|
|
*/
|
|
|
|
addr = ARMCSR_BASE;
|
|
|
|
else {
|
|
|
|
devfn -= 1 << 3;
|
|
|
|
|
|
|
|
if (devfn < PCI_DEVFN(MAX_SLOTS, 0))
|
|
|
|
addr = PCICFG0_BASE | 0xc00000 | (devfn << 8);
|
|
|
|
}
|
|
|
|
} else
|
|
|
|
addr = PCICFG1_BASE | (bus->number << 16) | (devfn << 8);
|
|
|
|
|
|
|
|
return addr;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dc21285_read_config(struct pci_bus *bus, unsigned int devfn, int where,
|
|
|
|
int size, u32 *value)
|
|
|
|
{
|
|
|
|
unsigned long addr = dc21285_base_address(bus, devfn);
|
|
|
|
u32 v = 0xffffffff;
|
|
|
|
|
|
|
|
if (addr)
|
|
|
|
switch (size) {
|
|
|
|
case 1:
|
2006-08-30 21:02:08 +07:00
|
|
|
asm("ldrb %0, [%1, %2]"
|
|
|
|
: "=r" (v) : "r" (addr), "r" (where) : "cc");
|
2005-04-17 05:20:36 +07:00
|
|
|
break;
|
|
|
|
case 2:
|
2006-08-30 21:02:08 +07:00
|
|
|
asm("ldrh %0, [%1, %2]"
|
|
|
|
: "=r" (v) : "r" (addr), "r" (where) : "cc");
|
2005-04-17 05:20:36 +07:00
|
|
|
break;
|
|
|
|
case 4:
|
2006-08-30 21:02:08 +07:00
|
|
|
asm("ldr %0, [%1, %2]"
|
|
|
|
: "=r" (v) : "r" (addr), "r" (where) : "cc");
|
2005-04-17 05:20:36 +07:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
*value = v;
|
|
|
|
|
|
|
|
v = *CSR_PCICMD;
|
|
|
|
if (v & PCICMD_ABORT) {
|
|
|
|
*CSR_PCICMD = v & (0xffff|PCICMD_ABORT);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return PCIBIOS_SUCCESSFUL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dc21285_write_config(struct pci_bus *bus, unsigned int devfn, int where,
|
|
|
|
int size, u32 value)
|
|
|
|
{
|
|
|
|
unsigned long addr = dc21285_base_address(bus, devfn);
|
|
|
|
u32 v;
|
|
|
|
|
|
|
|
if (addr)
|
|
|
|
switch (size) {
|
|
|
|
case 1:
|
2006-08-30 21:02:08 +07:00
|
|
|
asm("strb %0, [%1, %2]"
|
|
|
|
: : "r" (value), "r" (addr), "r" (where)
|
|
|
|
: "cc");
|
2005-04-17 05:20:36 +07:00
|
|
|
break;
|
|
|
|
case 2:
|
2006-08-30 21:02:08 +07:00
|
|
|
asm("strh %0, [%1, %2]"
|
|
|
|
: : "r" (value), "r" (addr), "r" (where)
|
|
|
|
: "cc");
|
2005-04-17 05:20:36 +07:00
|
|
|
break;
|
|
|
|
case 4:
|
2006-08-30 21:02:08 +07:00
|
|
|
asm("str %0, [%1, %2]"
|
|
|
|
: : "r" (value), "r" (addr), "r" (where)
|
|
|
|
: "cc");
|
2005-04-17 05:20:36 +07:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
v = *CSR_PCICMD;
|
|
|
|
if (v & PCICMD_ABORT) {
|
|
|
|
*CSR_PCICMD = v & (0xffff|PCICMD_ABORT);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return PCIBIOS_SUCCESSFUL;
|
|
|
|
}
|
|
|
|
|
2012-03-10 19:49:16 +07:00
|
|
|
struct pci_ops dc21285_ops = {
|
2005-04-17 05:20:36 +07:00
|
|
|
.read = dc21285_read_config,
|
|
|
|
.write = dc21285_write_config,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct timer_list serr_timer;
|
|
|
|
static struct timer_list perr_timer;
|
|
|
|
|
2017-10-20 06:30:38 +07:00
|
|
|
static void dc21285_enable_error(struct timer_list *timer)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
2017-10-20 06:30:38 +07:00
|
|
|
del_timer(timer);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2017-10-20 06:30:38 +07:00
|
|
|
if (timer == &serr_timer)
|
2017-11-04 03:33:23 +07:00
|
|
|
enable_irq(IRQ_PCI_SERR);
|
2017-10-20 06:30:38 +07:00
|
|
|
else if (timer == &perr_timer)
|
|
|
|
enable_irq(IRQ_PCI_PERR);
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Warn on PCI errors.
|
|
|
|
*/
|
2006-10-07 00:53:39 +07:00
|
|
|
static irqreturn_t dc21285_abort_irq(int irq, void *dev_id)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
|
|
|
unsigned int cmd;
|
|
|
|
unsigned int status;
|
|
|
|
|
|
|
|
cmd = *CSR_PCICMD;
|
|
|
|
status = cmd >> 16;
|
|
|
|
cmd = cmd & 0xffff;
|
|
|
|
|
|
|
|
if (status & PCI_STATUS_REC_MASTER_ABORT) {
|
|
|
|
printk(KERN_DEBUG "PCI: master abort, pc=0x%08lx\n",
|
2006-10-07 00:53:39 +07:00
|
|
|
instruction_pointer(get_irq_regs()));
|
2005-04-17 05:20:36 +07:00
|
|
|
cmd |= PCI_STATUS_REC_MASTER_ABORT << 16;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (status & PCI_STATUS_REC_TARGET_ABORT) {
|
|
|
|
printk(KERN_DEBUG "PCI: target abort: ");
|
|
|
|
pcibios_report_status(PCI_STATUS_REC_MASTER_ABORT |
|
|
|
|
PCI_STATUS_SIG_TARGET_ABORT |
|
|
|
|
PCI_STATUS_REC_TARGET_ABORT, 1);
|
|
|
|
printk("\n");
|
|
|
|
|
|
|
|
cmd |= PCI_STATUS_REC_TARGET_ABORT << 16;
|
|
|
|
}
|
|
|
|
|
|
|
|
*CSR_PCICMD = cmd;
|
|
|
|
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
2006-10-07 00:53:39 +07:00
|
|
|
static irqreturn_t dc21285_serr_irq(int irq, void *dev_id)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
|
|
|
struct timer_list *timer = dev_id;
|
|
|
|
unsigned int cntl;
|
|
|
|
|
|
|
|
printk(KERN_DEBUG "PCI: system error received: ");
|
|
|
|
pcibios_report_status(PCI_STATUS_SIG_SYSTEM_ERROR, 1);
|
|
|
|
printk("\n");
|
|
|
|
|
|
|
|
cntl = *CSR_SA110_CNTL & 0xffffdf07;
|
|
|
|
*CSR_SA110_CNTL = cntl | SA110_CNTL_RXSERR;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* back off this interrupt
|
|
|
|
*/
|
|
|
|
disable_irq(irq);
|
|
|
|
timer->expires = jiffies + HZ;
|
|
|
|
add_timer(timer);
|
|
|
|
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
2006-10-07 00:53:39 +07:00
|
|
|
static irqreturn_t dc21285_discard_irq(int irq, void *dev_id)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
|
|
|
printk(KERN_DEBUG "PCI: discard timer expired\n");
|
|
|
|
*CSR_SA110_CNTL &= 0xffffde07;
|
|
|
|
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
2006-10-07 00:53:39 +07:00
|
|
|
static irqreturn_t dc21285_dparity_irq(int irq, void *dev_id)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
|
|
|
unsigned int cmd;
|
|
|
|
|
|
|
|
printk(KERN_DEBUG "PCI: data parity error detected: ");
|
|
|
|
pcibios_report_status(PCI_STATUS_PARITY | PCI_STATUS_DETECTED_PARITY, 1);
|
|
|
|
printk("\n");
|
|
|
|
|
|
|
|
cmd = *CSR_PCICMD & 0xffff;
|
|
|
|
*CSR_PCICMD = cmd | 1 << 24;
|
|
|
|
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
2006-10-07 00:53:39 +07:00
|
|
|
static irqreturn_t dc21285_parity_irq(int irq, void *dev_id)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
|
|
|
struct timer_list *timer = dev_id;
|
|
|
|
unsigned int cmd;
|
|
|
|
|
|
|
|
printk(KERN_DEBUG "PCI: parity error detected: ");
|
|
|
|
pcibios_report_status(PCI_STATUS_PARITY | PCI_STATUS_DETECTED_PARITY, 1);
|
|
|
|
printk("\n");
|
|
|
|
|
|
|
|
cmd = *CSR_PCICMD & 0xffff;
|
|
|
|
*CSR_PCICMD = cmd | 1 << 31;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* back off this interrupt
|
|
|
|
*/
|
|
|
|
disable_irq(irq);
|
|
|
|
timer->expires = jiffies + HZ;
|
|
|
|
add_timer(timer);
|
|
|
|
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
|
|
|
int __init dc21285_setup(int nr, struct pci_sys_data *sys)
|
|
|
|
{
|
|
|
|
struct resource *res;
|
|
|
|
|
|
|
|
if (nr || !footbridge_cfn_mode())
|
|
|
|
return 0;
|
|
|
|
|
treewide: kzalloc() -> kcalloc()
The kzalloc() function has a 2-factor argument form, kcalloc(). This
patch replaces cases of:
kzalloc(a * b, gfp)
with:
kcalloc(a * b, gfp)
as well as handling cases of:
kzalloc(a * b * c, gfp)
with:
kzalloc(array3_size(a, b, c), gfp)
as it's slightly less ugly than:
kzalloc_array(array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
kzalloc(4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.
The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@
(
kzalloc(
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
|
kzalloc(
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)
// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@
(
kzalloc(
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(char) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(u8) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(__u8) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(char) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)
// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@
(
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)
// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@
- kzalloc
+ kcalloc
(
- SIZE * COUNT
+ COUNT, SIZE
, ...)
// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@
(
kzalloc(
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)
// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@
(
kzalloc(
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)
// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@
(
kzalloc(
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)
// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@
(
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)
// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@
(
kzalloc(sizeof(THING) * C2, ...)
|
kzalloc(sizeof(TYPE) * C2, ...)
|
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(C1 * C2, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * E2
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * (E2)
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- E1 * E2
+ E1, E2
, ...)
)
Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-13 04:03:40 +07:00
|
|
|
res = kcalloc(2, sizeof(struct resource), GFP_KERNEL);
|
2005-04-17 05:20:36 +07:00
|
|
|
if (!res) {
|
|
|
|
printk("out of memory for root bus resources");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
res[0].flags = IORESOURCE_MEM;
|
|
|
|
res[0].name = "Footbridge non-prefetch";
|
|
|
|
res[1].flags = IORESOURCE_MEM | IORESOURCE_PREFETCH;
|
|
|
|
res[1].name = "Footbridge prefetch";
|
|
|
|
|
|
|
|
allocate_resource(&iomem_resource, &res[1], 0x20000000,
|
|
|
|
0xa0000000, 0xffffffff, 0x20000000, NULL, NULL);
|
|
|
|
allocate_resource(&iomem_resource, &res[0], 0x40000000,
|
|
|
|
0x80000000, 0xffffffff, 0x40000000, NULL, NULL);
|
|
|
|
|
|
|
|
sys->mem_offset = DC21285_PCI_MEM;
|
|
|
|
|
2012-02-24 10:19:01 +07:00
|
|
|
pci_add_resource_offset(&sys->resources, &res[0], sys->mem_offset);
|
|
|
|
pci_add_resource_offset(&sys->resources, &res[1], sys->mem_offset);
|
|
|
|
|
2005-04-17 05:20:36 +07:00
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2009-01-08 22:42:42 +07:00
|
|
|
#define dc21285_request_irq(_a, _b, _c, _d, _e) \
|
|
|
|
WARN_ON(request_irq(_a, _b, _c, _d, _e) < 0)
|
|
|
|
|
2005-04-17 05:20:36 +07:00
|
|
|
void __init dc21285_preinit(void)
|
|
|
|
{
|
|
|
|
unsigned int mem_size, mem_mask;
|
|
|
|
int cfn_mode;
|
|
|
|
|
2011-06-29 09:16:13 +07:00
|
|
|
pcibios_min_mem = 0x81000000;
|
|
|
|
|
2005-04-17 05:20:36 +07:00
|
|
|
mem_size = (unsigned int)high_memory - PAGE_OFFSET;
|
|
|
|
for (mem_mask = 0x00100000; mem_mask < 0x10000000; mem_mask <<= 1)
|
|
|
|
if (mem_mask >= mem_size)
|
2012-03-02 09:48:12 +07:00
|
|
|
break;
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
/*
|
|
|
|
* These registers need to be set up whether we're the
|
|
|
|
* central function or not.
|
|
|
|
*/
|
|
|
|
*CSR_SDRAMBASEMASK = (mem_mask - 1) & 0x0ffc0000;
|
|
|
|
*CSR_SDRAMBASEOFFSET = 0;
|
|
|
|
*CSR_ROMBASEMASK = 0x80000000;
|
|
|
|
*CSR_CSRBASEMASK = 0;
|
|
|
|
*CSR_CSRBASEOFFSET = 0;
|
|
|
|
*CSR_PCIADDR_EXTN = 0;
|
|
|
|
|
|
|
|
cfn_mode = __footbridge_cfn_mode();
|
|
|
|
|
|
|
|
printk(KERN_INFO "PCI: DC21285 footbridge, revision %02lX, in "
|
|
|
|
"%s mode\n", *CSR_CLASSREV & 0xff, cfn_mode ?
|
|
|
|
"central function" : "addin");
|
|
|
|
|
|
|
|
if (footbridge_cfn_mode()) {
|
|
|
|
/*
|
|
|
|
* Clear any existing errors - we aren't
|
|
|
|
* interested in historical data...
|
|
|
|
*/
|
|
|
|
*CSR_SA110_CNTL = (*CSR_SA110_CNTL & 0xffffde07) |
|
|
|
|
SA110_CNTL_RXSERR;
|
|
|
|
*CSR_PCICMD = (*CSR_PCICMD & 0xffff) | PCICMD_ERROR_BITS;
|
|
|
|
}
|
|
|
|
|
2017-10-20 06:30:38 +07:00
|
|
|
timer_setup(&serr_timer, dc21285_enable_error, 0);
|
|
|
|
timer_setup(&perr_timer, dc21285_enable_error, 0);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
/*
|
|
|
|
* We don't care if these fail.
|
|
|
|
*/
|
2014-03-05 03:45:48 +07:00
|
|
|
dc21285_request_irq(IRQ_PCI_SERR, dc21285_serr_irq, 0,
|
2009-01-08 22:42:42 +07:00
|
|
|
"PCI system error", &serr_timer);
|
2014-03-05 03:45:48 +07:00
|
|
|
dc21285_request_irq(IRQ_PCI_PERR, dc21285_parity_irq, 0,
|
2009-01-08 22:42:42 +07:00
|
|
|
"PCI parity error", &perr_timer);
|
2014-03-05 03:45:48 +07:00
|
|
|
dc21285_request_irq(IRQ_PCI_ABORT, dc21285_abort_irq, 0,
|
2009-01-08 22:42:42 +07:00
|
|
|
"PCI abort", NULL);
|
2014-03-05 03:45:48 +07:00
|
|
|
dc21285_request_irq(IRQ_DISCARD_TIMER, dc21285_discard_irq, 0,
|
2009-01-08 22:42:42 +07:00
|
|
|
"Discard timer", NULL);
|
2014-03-05 03:45:48 +07:00
|
|
|
dc21285_request_irq(IRQ_PCI_DPERR, dc21285_dparity_irq, 0,
|
2009-01-08 22:42:42 +07:00
|
|
|
"PCI data parity", NULL);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
if (cfn_mode) {
|
|
|
|
/*
|
|
|
|
* Map our SDRAM at a known address in PCI space, just in case
|
|
|
|
* the firmware had other ideas. Using a nonzero base is
|
|
|
|
* necessary, since some VGA cards forcefully use PCI addresses
|
|
|
|
* in the range 0x000a0000 to 0x000c0000. (eg, S3 cards).
|
|
|
|
*/
|
|
|
|
*CSR_PCICSRBASE = 0xf4000000;
|
2012-03-02 09:48:12 +07:00
|
|
|
*CSR_PCICSRIOBASE = 0;
|
2005-04-17 05:20:36 +07:00
|
|
|
*CSR_PCISDRAMBASE = __virt_to_bus(PAGE_OFFSET);
|
|
|
|
*CSR_PCIROMBASE = 0;
|
|
|
|
*CSR_PCICMD = PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER |
|
|
|
|
PCI_COMMAND_INVALIDATE | PCICMD_ERROR_BITS;
|
|
|
|
} else if (footbridge_cfn_mode() != 0) {
|
|
|
|
/*
|
|
|
|
* If we are not compiled to accept "add-in" mode, then
|
|
|
|
* we are using a constant virt_to_bus translation which
|
|
|
|
* can not hope to cater for the way the host BIOS has
|
|
|
|
* set up the machine.
|
|
|
|
*/
|
|
|
|
panic("PCI: this kernel is compiled for central "
|
|
|
|
"function mode only");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void __init dc21285_postinit(void)
|
|
|
|
{
|
|
|
|
register_isa_ports(DC21285_PCI_MEM, DC21285_PCI_IO, 0);
|
|
|
|
}
|