Skip to content

Commit

Permalink
MIPS: Alchemy: Redo PCI as platform driver
Browse files Browse the repository at this point in the history 
- Rewrite Alchemy PCI support as a platform driver.
- Fixup boards which have PCI.

Run-tested on DB1500 and DB1550.

Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
To: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/2706/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 delete mode 100644 arch/mips/alchemy/common/pci.c
 delete mode 100644 arch/mips/pci/fixup-au1000.c
 delete mode 100644 arch/mips/pci/ops-au1000.c
 create mode 100644 arch/mips/pci/pci-alchemy.c
  • Loading branch information
Manuel Lauss authored and Ralf Baechle committed Oct 24, 2011
1 parent 7cc2e27 commit 7517de3
Show file tree
Hide file tree
Showing 19 changed files with 950 additions and 625 deletions.
2 changes: 0 additions & 2 deletions arch/mips/alchemy/common/Makefile
View file
Original file line number Diff line number Diff line change
Expand Up @@ -14,5 +14,3 @@ obj-$(CONFIG_ALCHEMY_GPIOINT_AU1000) += irq.o
ifeq ($(CONFIG_ALCHEMY_GPIO_INDIRECT),)
obj-$(CONFIG_GPIOLIB) += gpiolib.o
endif

obj-$(CONFIG_PCI) += pci.o
104 changes: 0 additions & 104 deletions arch/mips/alchemy/common/pci.c
View file

This file was deleted.

6 changes: 3 additions & 3 deletions arch/mips/alchemy/common/setup.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -73,16 +73,16 @@ void __init plat_mem_setup(void)
/* This routine should be valid for all Au1x based boards */
phys_t __fixup_bigphys_addr(phys_t phys_addr, phys_t size)
{
u32 start = (u32)Au1500_PCI_MEM_START;
u32 end = (u32)Au1500_PCI_MEM_END;
unsigned long start = ALCHEMY_PCI_MEMWIN_START;
unsigned long end = ALCHEMY_PCI_MEMWIN_END;

/* Don't fixup 36-bit addresses */
if ((phys_addr >> 32) != 0)
return phys_addr;

/* Check for PCI memory window */
if (phys_addr >= start && (phys_addr + size - 1) <= end)
return (phys_t)((phys_addr - start) + Au1500_PCI_MEM_START);
return (phys_t)(AU1500_PCI_MEM_PHYS_ADDR + phys_addr);

/* default nop */
return phys_addr;
Expand Down
24 changes: 0 additions & 24 deletions arch/mips/alchemy/devboards/db1x00/board_setup.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -40,24 +40,6 @@

#include <prom.h>

#ifdef CONFIG_MIPS_DB1500
char irq_tab_alchemy[][5] __initdata = {
[12] = { -1, AU1500_PCI_INTA, 0xff, 0xff, 0xff }, /* IDSEL 12 - HPT371 */
[13] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, AU1500_PCI_INTC, AU1500_PCI_INTD }, /* IDSEL 13 - PCI slot */
};

#endif


#ifdef CONFIG_MIPS_DB1550
char irq_tab_alchemy[][5] __initdata = {
[11] = { -1, AU1550_PCI_INTC, 0xff, 0xff, 0xff }, /* IDSEL 11 - on-board HPT371 */
[12] = { -1, AU1550_PCI_INTB, AU1550_PCI_INTC, AU1550_PCI_INTD, AU1550_PCI_INTA }, /* IDSEL 12 - PCI slot 2 (left) */
[13] = { -1, AU1550_PCI_INTA, AU1550_PCI_INTB, AU1550_PCI_INTC, AU1550_PCI_INTD }, /* IDSEL 13 - PCI slot 1 (right) */
};
#endif


#ifdef CONFIG_MIPS_BOSPORUS
char irq_tab_alchemy[][5] __initdata = {
[11] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff }, /* IDSEL 11 - miniPCI */
Expand Down Expand Up @@ -91,12 +73,6 @@ const char *get_system_type(void)


#ifdef CONFIG_MIPS_MIRAGE
char irq_tab_alchemy[][5] __initdata = {
[11] = { -1, AU1500_PCI_INTD, 0xff, 0xff, 0xff }, /* IDSEL 11 - SMI VGX */
[12] = { -1, 0xff, 0xff, AU1500_PCI_INTC, 0xff }, /* IDSEL 12 - PNX1300 */
[13] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff }, /* IDSEL 13 - miniPCI */
};

static void mirage_power_off(void)
{
alchemy_gpio_direction_output(210, 1);
Expand Down
123 changes: 123 additions & 0 deletions arch/mips/alchemy/devboards/db1x00/platform.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,8 @@
#include <asm/mach-db1x00/bcsr.h>
#include "../platform.h"

struct pci_dev;

/* DB1xxx PCMCIA interrupt sources:
* CD0/1 GPIO0/3
* STSCHG0/1 GPIO1/4
Expand Down Expand Up @@ -85,6 +87,127 @@
#endif
#endif

#ifdef CONFIG_PCI
#ifdef CONFIG_MIPS_DB1500
static int db1xxx_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
{
if ((slot < 12) || (slot > 13) || pin == 0)
return -1;
if (slot == 12)
return (pin == 1) ? AU1500_PCI_INTA : 0xff;
if (slot == 13) {
switch (pin) {
case 1: return AU1500_PCI_INTA;
case 2: return AU1500_PCI_INTB;
case 3: return AU1500_PCI_INTC;
case 4: return AU1500_PCI_INTD;
}
}
return -1;
}
#endif

#ifdef CONFIG_MIPS_DB1550
static int db1xxx_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
{
if ((slot < 11) || (slot > 13) || pin == 0)
return -1;
if (slot == 11)
return (pin == 1) ? AU1550_PCI_INTC : 0xff;
if (slot == 12) {
switch (pin) {
case 1: return AU1550_PCI_INTB;
case 2: return AU1550_PCI_INTC;
case 3: return AU1550_PCI_INTD;
case 4: return AU1550_PCI_INTA;
}
}
if (slot == 13) {
switch (pin) {
case 1: return AU1550_PCI_INTA;
case 2: return AU1550_PCI_INTB;
case 3: return AU1550_PCI_INTC;
case 4: return AU1550_PCI_INTD;
}
}
return -1;
}
#endif

#ifdef CONFIG_MIPS_BOSPORUS
static int db1xxx_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
{
if ((slot < 11) || (slot > 13) || pin == 0)
return -1;
if (slot == 12)
return (pin == 1) ? AU1500_PCI_INTA : 0xff;
if (slot == 11) {
switch (pin) {
case 1: return AU1500_PCI_INTA;
case 2: return AU1500_PCI_INTB;
default: return 0xff;
}
}
if (slot == 13) {
switch (pin) {
case 1: return AU1500_PCI_INTA;
case 2: return AU1500_PCI_INTB;
case 3: return AU1500_PCI_INTC;
case 4: return AU1500_PCI_INTD;
}
}
return -1;
}
#endif

#ifdef CONFIG_MIPS_MIRAGE
static int db1xxx_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
{
if ((slot < 11) || (slot > 13) || pin == 0)
return -1;
if (slot == 11)
return (pin == 1) ? AU1500_PCI_INTD : 0xff;
if (slot == 12)
return (pin == 3) ? AU1500_PCI_INTC : 0xff;
if (slot == 13) {
switch (pin) {
case 1: return AU1500_PCI_INTA;
case 2: return AU1500_PCI_INTB;
default: return 0xff;
}
}
return -1;
}
#endif

static struct resource alchemy_pci_host_res[] = {
[0] = {
.start = AU1500_PCI_PHYS_ADDR,
.end = AU1500_PCI_PHYS_ADDR + 0xfff,
.flags = IORESOURCE_MEM,
},
};

static struct alchemy_pci_platdata db1xxx_pci_pd = {
.board_map_irq = db1xxx_map_pci_irq,
};

static struct platform_device db1xxx_pci_host_dev = {
.dev.platform_data = &db1xxx_pci_pd,
.name = "alchemy-pci",
.id = 0,
.num_resources = ARRAY_SIZE(alchemy_pci_host_res),
.resource = alchemy_pci_host_res,
};

static int __init db15x0_pci_init(void)
{
return platform_device_register(&db1xxx_pci_host_dev);
}
/* must be arch_initcall; MIPS PCI scans busses in a subsys_initcall */
arch_initcall(db15x0_pci_init);
#endif

static int __init db1xxx_dev_init(void)
{
#ifdef DB1XXX_HAS_PCMCIA
Expand Down
33 changes: 12 additions & 21 deletions arch/mips/alchemy/devboards/pb1500/board_setup.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -33,13 +33,6 @@

#include <prom.h>


char irq_tab_alchemy[][5] __initdata = {
[12] = { -1, AU1500_PCI_INTA, 0xff, 0xff, 0xff }, /* IDSEL 12 - HPT370 */
[13] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, AU1500_PCI_INTC, AU1500_PCI_INTD }, /* IDSEL 13 - PCI slot */
};


const char *get_system_type(void)
{
return "Alchemy Pb1500";
Expand Down Expand Up @@ -101,20 +94,18 @@ void __init board_setup(void)
#endif /* defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) */

#ifdef CONFIG_PCI
/* Setup PCI bus controller */
au_writel(0, Au1500_PCI_CMEM);
au_writel(0x00003fff, Au1500_CFG_BASE);
#if defined(__MIPSEB__)
au_writel(0xf | (2 << 6) | (1 << 4), Au1500_PCI_CFG);
#else
au_writel(0xf, Au1500_PCI_CFG);
#endif
au_writel(0xf0000000, Au1500_PCI_MWMASK_DEV);
au_writel(0, Au1500_PCI_MWBASE_REV_CCL);
au_writel(0x02a00356, Au1500_PCI_STATCMD);
au_writel(0x00003c04, Au1500_PCI_HDRTYPE);
au_writel(0x00000008, Au1500_PCI_MBAR);
au_sync();
{
void __iomem *base =
(void __iomem *)KSEG1ADDR(AU1500_PCI_PHYS_ADDR);
/* Setup PCI bus controller */
__raw_writel(0x00003fff, base + PCI_REG_CMEM);
__raw_writel(0xf0000000, base + PCI_REG_MWMASK_DEV);
__raw_writel(0, base + PCI_REG_MWBASE_REV_CCL);
__raw_writel(0x02a00356, base + PCI_REG_STATCMD);
__raw_writel(0x00003c04, base + PCI_REG_PARAM);
__raw_writel(0x00000008, base + PCI_REG_MBAR);
wmb();
}
#endif

/* Enable sys bus clock divider when IDLE state or no bus activity. */
Expand Down
Loading

0 comments on commit 7517de3

Please sign in to comment.