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ramips: add rt2880_pci_get_cfgaddr helper
[openwrt.git]
/
target
/
linux
/
ramips
/
files
/
arch
/
mips
/
pci
/
pci-rt288x.c
diff --git
a/target/linux/ramips/files/arch/mips/pci/pci-rt288x.c
b/target/linux/ramips/files/arch/mips/pci/pci-rt288x.c
index
8ec50d6
..
14b7d42
100644
(file)
--- a/
target/linux/ramips/files/arch/mips/pci/pci-rt288x.c
+++ b/
target/linux/ramips/files/arch/mips/pci/pci-rt288x.c
@@
-19,7
+19,10
@@
#include <asm/mach-ralink/rt288x.h>
#include <asm/mach-ralink/rt288x_regs.h>
#include <asm/mach-ralink/rt288x.h>
#include <asm/mach-ralink/rt288x_regs.h>
-#define RT2880_PCI_SLOT1_BASE 0x20000000
+#define RT2880_PCI_MEM_BASE 0x20000000
+#define RT2880_PCI_MEM_SIZE 0x10000000
+#define RT2880_PCI_IO_BASE 0x00460000
+#define RT2880_PCI_IO_SIZE 0x00010000
#define RT2880_PCI_REG_PCICFG_ADDR 0x00
#define RT2880_PCI_REG_PCIMSK_ADDR 0x0c
#define RT2880_PCI_REG_PCICFG_ADDR 0x00
#define RT2880_PCI_REG_PCIMSK_ADDR 0x0c
@@
-37,7
+40,8
@@
#define PCI_ACCESS_READ 0
#define PCI_ACCESS_WRITE 1
#define PCI_ACCESS_READ 0
#define PCI_ACCESS_WRITE 1
-void __iomem *rt2880_pci_base;
+static void __iomem *rt2880_pci_base;
+static DEFINE_SPINLOCK(rt2880_pci_lock);
static u32 rt2880_pci_reg_read(u32 reg)
{
static u32 rt2880_pci_reg_read(u32 reg)
{
@@
-49,15
+53,20
@@
static void rt2880_pci_reg_write(u32 val, u32 reg)
writel(val, rt2880_pci_base + reg);
}
writel(val, rt2880_pci_base + reg);
}
+static inline u32 rt2880_pci_get_cfgaddr(unsigned int bus, unsigned int slot,
+ unsigned int func, unsigned int where)
+{
+ return ((bus << 16) | (slot << 11) | (func << 8) | (where & 0xfc) |
+ 0x80000000);
+}
+
static void config_access(unsigned char access_type, struct pci_bus *bus,
unsigned int devfn, unsigned char where, u32 *data)
{
static void config_access(unsigned char access_type, struct pci_bus *bus,
unsigned int devfn, unsigned char where, u32 *data)
{
- unsigned int slot = PCI_SLOT(devfn);
unsigned int address;
unsigned int address;
- u8 func = PCI_FUNC(devfn);
- address =
(bus->number << 16) | (slot << 11) | (func << 8) |
-
(where & 0xfc) | 0x80000000
;
+ address =
rt2880_pci_get_cfgaddr(bus->number, PCI_SLOT(devfn),
+
PCI_FUNC(devfn), where)
;
rt2880_pci_reg_write(address, RT2880_PCI_REG_CONFIG_ADDR);
if (access_type == PCI_ACCESS_WRITE)
rt2880_pci_reg_write(address, RT2880_PCI_REG_CONFIG_ADDR);
if (access_type == PCI_ACCESS_WRITE)
@@
-69,16
+78,24
@@
static void config_access(unsigned char access_type, struct pci_bus *bus,
static int rt2880_pci_config_read(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 *val)
{
static int rt2880_pci_config_read(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 *val)
{
+ unsigned long flags;
u32 data = 0;
u32 data = 0;
+ spin_lock_irqsave(&rt2880_pci_lock, flags);
config_access(PCI_ACCESS_READ, bus, devfn, where, &data);
config_access(PCI_ACCESS_READ, bus, devfn, where, &data);
+ spin_unlock_irqrestore(&rt2880_pci_lock, flags);
- if (size == 1)
+ switch (size) {
+ case 1:
*val = (data >> ((where & 3) << 3)) & 0xff;
*val = (data >> ((where & 3) << 3)) & 0xff;
- else if (size == 2)
+ break;
+ case 2:
*val = (data >> ((where & 3) << 3)) & 0xffff;
*val = (data >> ((where & 3) << 3)) & 0xffff;
- else
+ break;
+ case 4:
*val = data;
*val = data;
+ break;
+ }
return PCIBIOS_SUCCESSFUL;
}
return PCIBIOS_SUCCESSFUL;
}
@@
-86,21
+103,29
@@
static int rt2880_pci_config_read(struct pci_bus *bus, unsigned int devfn,
static int rt2880_pci_config_write(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 val)
{
static int rt2880_pci_config_write(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 val)
{
+ unsigned long flags;
u32 data = 0;
u32 data = 0;
- if (size == 4) {
- data = val;
- } else {
+ spin_lock_irqsave(&rt2880_pci_lock, flags);
+
+ switch (size) {
+ case 1:
+ config_access(PCI_ACCESS_READ, bus, devfn, where, &data);
+ data = (data & ~(0xff << ((where & 3) << 3))) |
+ (val << ((where & 3) << 3));
+ break;
+ case 2:
config_access(PCI_ACCESS_READ, bus, devfn, where, &data);
config_access(PCI_ACCESS_READ, bus, devfn, where, &data);
- if (size == 1)
- data = (data & ~(0xff << ((where & 3) << 3))) |
-
(val << ((where & 3) << 3))
;
- else if (size == 2)
- data = (data & ~(0xffff << ((where & 3) << 3))) |
-
(val << ((where & 3) << 3))
;
+ data = (data & ~(0xffff << ((where & 3) << 3))) |
+ (val << ((where & 3) << 3));
+
break
;
+ case 4:
+ data = val;
+
break
;
}
config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data);
}
config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data);
+ spin_unlock_irqrestore(&rt2880_pci_lock, flags);
return PCIBIOS_SUCCESSFUL;
}
return PCIBIOS_SUCCESSFUL;
}
@@
-112,15
+137,15
@@
static struct pci_ops rt2880_pci_ops = {
static struct resource rt2880_pci_io_resource = {
.name = "PCI MEM space",
static struct resource rt2880_pci_io_resource = {
.name = "PCI MEM space",
- .start =
0x20000000
,
- .end =
0x2FFFFFFF
,
+ .start =
RT2880_PCI_MEM_BASE
,
+ .end =
RT2880_PCI_MEM_BASE + RT2880_PCI_MEM_SIZE - 1
,
.flags = IORESOURCE_MEM,
};
static struct resource rt2880_pci_mem_resource = {
.name = "PCI IO space",
.flags = IORESOURCE_MEM,
};
static struct resource rt2880_pci_mem_resource = {
.name = "PCI IO space",
- .start =
0x00460000
,
- .end =
0x0046FFFF
,
+ .start =
RT2880_PCI_IO_BASE
,
+ .end =
RT2880_PCI_IO_BASE + RT2880_PCI_IO_SIZE - 1
,
.flags = IORESOURCE_IO,
};
.flags = IORESOURCE_IO,
};
@@
-135,11
+160,14
@@
static inline void read_config(unsigned long bus, unsigned long dev,
unsigned long *val)
{
unsigned long address;
unsigned long *val)
{
unsigned long address;
+ unsigned long flags;
- address = (bus << 16) | (dev << 11) | (func << 8) | (reg & 0xfc) |
- 0x80000000;
+ address = rt2880_pci_get_cfgaddr(bus, dev, func, reg);
+
+ spin_lock_irqsave(&rt2880_pci_lock, flags);
rt2880_pci_reg_write(address, RT2880_PCI_REG_CONFIG_ADDR);
*val = rt2880_pci_reg_read(RT2880_PCI_REG_CONFIG_DATA);
rt2880_pci_reg_write(address, RT2880_PCI_REG_CONFIG_ADDR);
*val = rt2880_pci_reg_read(RT2880_PCI_REG_CONFIG_DATA);
+ spin_unlock_irqrestore(&rt2880_pci_lock, flags);
}
static inline void write_config(unsigned long bus, unsigned long dev,
}
static inline void write_config(unsigned long bus, unsigned long dev,
@@
-147,11
+175,14
@@
static inline void write_config(unsigned long bus, unsigned long dev,
unsigned long val)
{
unsigned long address;
unsigned long val)
{
unsigned long address;
+ unsigned long flags;
+
+ address = rt2880_pci_get_cfgaddr(bus, dev, func, reg);
- address = (bus << 16) | (dev << 11) | (func << 8) | (reg & 0xfc) |
- 0x80000000;
+ spin_lock_irqsave(&rt2880_pci_lock, flags);
rt2880_pci_reg_write(address, RT2880_PCI_REG_CONFIG_ADDR);
rt2880_pci_reg_write(val, RT2880_PCI_REG_CONFIG_DATA);
rt2880_pci_reg_write(address, RT2880_PCI_REG_CONFIG_ADDR);
rt2880_pci_reg_write(val, RT2880_PCI_REG_CONFIG_DATA);
+ spin_unlock_irqrestore(&rt2880_pci_lock, flags);
}
int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
}
int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
@@
-202,8
+233,8
@@
static int __init rt2880_pci_init(void)
rt2880_pci_reg_write(0x79, RT2880_PCI_REG_ARBCTL);
rt2880_pci_reg_write(0x07FF0001, RT2880_PCI_REG_BAR0SETUP_ADDR);
rt2880_pci_reg_write(0x79, RT2880_PCI_REG_ARBCTL);
rt2880_pci_reg_write(0x07FF0001, RT2880_PCI_REG_BAR0SETUP_ADDR);
- rt2880_pci_reg_write(RT2880_PCI_
SLOT1
_BASE, RT2880_PCI_REG_MEMBASE);
- rt2880_pci_reg_write(
0x00460000
, RT2880_PCI_REG_IOBASE);
+ rt2880_pci_reg_write(RT2880_PCI_
MEM
_BASE, RT2880_PCI_REG_MEMBASE);
+ rt2880_pci_reg_write(
RT2880_PCI_IO_BASE
, RT2880_PCI_REG_IOBASE);
rt2880_pci_reg_write(0x08000000, RT2880_PCI_REG_IMBASEBAR0_ADDR);
rt2880_pci_reg_write(0x08021814, RT2880_PCI_REG_ID);
rt2880_pci_reg_write(0x00800001, RT2880_PCI_REG_CLASS);
rt2880_pci_reg_write(0x08000000, RT2880_PCI_REG_IMBASEBAR0_ADDR);
rt2880_pci_reg_write(0x08021814, RT2880_PCI_REG_ID);
rt2880_pci_reg_write(0x00800001, RT2880_PCI_REG_CLASS);
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