diff options
Diffstat (limited to 'board')
| -rw-r--r-- | board/armltd/integrator/pci.c | 582 | ||||
| -rw-r--r-- | board/armltd/integrator/pci_v3.h | 200 |
2 files changed, 532 insertions, 250 deletions
diff --git a/board/armltd/integrator/pci.c b/board/armltd/integrator/pci.c index 6ee2a85..f040450 100644 --- a/board/armltd/integrator/pci.c +++ b/board/armltd/integrator/pci.c @@ -14,6 +14,10 @@ * ARM Ltd. * Philippe Robin, <philippe.robin@arm.com> * + * (C) Copyright 2011 + * Linaro + * Linus Walleij <linus.walleij@linaro.org> + * * See file CREDITS for list of people who contributed to this * project. * @@ -32,15 +36,53 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ - #include <common.h> #include <pci.h> +#include <asm/io.h> +#include "integrator-sc.h" +#include "pci_v3.h" + +#define INTEGRATOR_BOOT_ROM_BASE 0x20000000 +#define INTEGRATOR_HDR0_SDRAM_BASE 0x80000000 + +/* + * These are in the physical addresses on the CPU side, i.e. + * where we read and write stuff - you don't want to try to + * move these around + */ +#define PHYS_PCI_MEM_BASE 0x40000000 +#define PHYS_PCI_IO_BASE 0x60000000 /* PCI I/O space base */ +#define PHYS_PCI_CONFIG_BASE 0x61000000 +#define PHYS_PCI_V3_BASE 0x62000000 /* V360EPC registers */ +#define SZ_256M 0x10000000 + +/* + * These are in the PCI BUS address space + * Set to 0x00000000 in the Linux kernel, 0x40000000 in Boot monitor + * we follow the example of the kernel, because that is the address + * range that devices actually use - what would they be doing at + * 0x40000000? + */ +#define PCI_BUS_NONMEM_START 0x00000000 +#define PCI_BUS_NONMEM_SIZE SZ_256M + +#define PCI_BUS_PREMEM_START (PCI_BUS_NONMEM_START + PCI_BUS_NONMEM_SIZE) +#define PCI_BUS_PREMEM_SIZE SZ_256M + +#if PCI_BUS_NONMEM_START & 0x000fffff +#error PCI_BUS_NONMEM_START must be megabyte aligned +#endif +#if PCI_BUS_PREMEM_START & 0x000fffff +#error PCI_BUS_PREMEM_START must be megabyte aligned +#endif /* * Initialize PCI Devices, report devices found. */ #ifndef CONFIG_PCI_PNP +#define PCI_ENET0_IOADDR 0x60000000 /* First card in PCI I/O space */ +#define PCI_ENET0_MEMADDR 0x40000000 /* First card in PCI memory space */ static struct pci_config_table pci_integrator_config_table[] = { { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 0x0f, PCI_ANY_ID, pci_cfgfunc_config_device, { PCI_ENET0_IOADDR, @@ -51,163 +93,187 @@ static struct pci_config_table pci_integrator_config_table[] = { #endif /* CONFIG_PCI_PNP */ /* V3 access routines */ -#define _V3Write16(o,v) (*(volatile unsigned short *)(PCI_V3_BASE + (unsigned int)(o)) = (unsigned short)(v)) -#define _V3Read16(o) (*(volatile unsigned short *)(PCI_V3_BASE + (unsigned int)(o))) - -#define _V3Write32(o,v) (*(volatile unsigned int *)(PCI_V3_BASE + (unsigned int)(o)) = (unsigned int)(v)) -#define _V3Read32(o) (*(volatile unsigned int *)(PCI_V3_BASE + (unsigned int)(o))) - -/* Compute address necessary to access PCI config space for the given */ -/* bus and device. */ -#define PCI_CONFIG_ADDRESS( __bus, __devfn, __offset ) ({ \ - unsigned int __address, __devicebit; \ - unsigned short __mapaddress; \ - unsigned int __dev = PCI_DEV (__devfn); /* FIXME to check!! (slot?) */ \ - \ - if (__bus == 0) { \ - /* local bus segment so need a type 0 config cycle */ \ - /* build the PCI configuration "address" with one-hot in A31-A11 */ \ - __address = PCI_CONFIG_BASE; \ - __address |= ((__devfn & 0x07) << 8); \ - __address |= __offset & 0xFF; \ - __mapaddress = 0x000A; /* 101=>config cycle, 0=>A1=A0=0 */ \ - __devicebit = (1 << (__dev + 11)); \ - \ - if ((__devicebit & 0xFF000000) != 0) { \ - /* high order bits are handled by the MAP register */ \ - __mapaddress |= (__devicebit >> 16); \ - } else { \ - /* low order bits handled directly in the address */ \ - __address |= __devicebit; \ - } \ - } else { /* bus !=0 */ \ - /* not the local bus segment so need a type 1 config cycle */ \ - /* A31-A24 are don't care (so clear to 0) */ \ - __mapaddress = 0x000B; /* 101=>config cycle, 1=>A1&A0 from PCI_CFG */ \ - __address = PCI_CONFIG_BASE; \ - __address |= ((__bus & 0xFF) << 16); /* bits 23..16 = bus number */ \ - __address |= ((__dev & 0x1F) << 11); /* bits 15..11 = device number */ \ - __address |= ((__devfn & 0x07) << 8); /* bits 10..8 = function number */ \ - __address |= __offset & 0xFF; /* bits 7..0 = register number */ \ - } \ - _V3Write16 (V3_LB_MAP1, __mapaddress); \ - __address; \ -}) - -/* _V3OpenConfigWindow - open V3 configuration window */ -#define _V3OpenConfigWindow() { \ - /* Set up base0 to see all 512Mbytes of memory space (not */ \ - /* prefetchable), this frees up base1 for re-use by configuration*/ \ - /* memory */ \ - \ - _V3Write32 (V3_LB_BASE0, ((INTEGRATOR_PCI_BASE & 0xFFF00000) | \ - 0x90 | V3_LB_BASE_M_ENABLE)); \ - /* Set up base1 to point into configuration space, note that MAP1 */ \ - /* register is set up by pciMakeConfigAddress(). */ \ - \ - _V3Write32 (V3_LB_BASE1, ((CPU_PCI_CNFG_ADRS & 0xFFF00000) | \ - 0x40 | V3_LB_BASE_M_ENABLE)); \ +#define v3_writeb(o, v) __raw_writeb(v, PHYS_PCI_V3_BASE + (unsigned int)(o)) +#define v3_readb(o) (__raw_readb(PHYS_PCI_V3_BASE + (unsigned int)(o))) + +#define v3_writew(o, v) __raw_writew(v, PHYS_PCI_V3_BASE + (unsigned int)(o)) +#define v3_readw(o) (__raw_readw(PHYS_PCI_V3_BASE + (unsigned int)(o))) + +#define v3_writel(o, v) __raw_writel(v, PHYS_PCI_V3_BASE + (unsigned int)(o)) +#define v3_readl(o) (__raw_readl(PHYS_PCI_V3_BASE + (unsigned int)(o))) + +static unsigned long v3_open_config_window(pci_dev_t bdf, int offset) +{ + unsigned int address, mapaddress; + unsigned int busnr = PCI_BUS(bdf); + unsigned int devfn = PCI_FUNC(bdf); + + /* + * Trap out illegal values + */ + if (offset > 255) + BUG(); + if (busnr > 255) + BUG(); + if (devfn > 255) + BUG(); + + if (busnr == 0) { + /* + * Linux calls the thing U-Boot calls "DEV" "SLOT" + * instead, but it's the same 5 bits + */ + int slot = PCI_DEV(bdf); + + /* + * local bus segment so need a type 0 config cycle + * + * build the PCI configuration "address" with one-hot in + * A31-A11 + * + * mapaddress: + * 3:1 = config cycle (101) + * 0 = PCI A1 & A0 are 0 (0) + */ + address = PCI_FUNC(bdf) << 8; + mapaddress = V3_LB_MAP_TYPE_CONFIG; + + if (slot > 12) + /* + * high order bits are handled by the MAP register + */ + mapaddress |= 1 << (slot - 5); + else + /* + * low order bits handled directly in the address + */ + address |= 1 << (slot + 11); + } else { + /* + * not the local bus segment so need a type 1 config cycle + * + * address: + * 23:16 = bus number + * 15:11 = slot number (7:3 of devfn) + * 10:8 = func number (2:0 of devfn) + * + * mapaddress: + * 3:1 = config cycle (101) + * 0 = PCI A1 & A0 from host bus (1) + */ + mapaddress = V3_LB_MAP_TYPE_CONFIG | V3_LB_MAP_AD_LOW_EN; + address = (busnr << 16) | (devfn << 8); + } + + /* + * Set up base0 to see all 512Mbytes of memory space (not + * prefetchable), this frees up base1 for re-use by + * configuration memory + */ + v3_writel(V3_LB_BASE0, v3_addr_to_lb_base(PHYS_PCI_MEM_BASE) | + V3_LB_BASE_ADR_SIZE_512MB | V3_LB_BASE_ENABLE); + + /* + * Set up base1/map1 to point into configuration space. + */ + v3_writel(V3_LB_BASE1, v3_addr_to_lb_base(PHYS_PCI_CONFIG_BASE) | + V3_LB_BASE_ADR_SIZE_16MB | V3_LB_BASE_ENABLE); + v3_writew(V3_LB_MAP1, mapaddress); + + return PHYS_PCI_CONFIG_BASE + address + offset; } -/* _V3CloseConfigWindow - close V3 configuration window */ -#define _V3CloseConfigWindow() { \ - /* Reassign base1 for use by prefetchable PCI memory */ \ - _V3Write32 (V3_LB_BASE1, (((INTEGRATOR_PCI_BASE + 0x10000000) & 0xFFF00000) \ - | 0x84 | V3_LB_BASE_M_ENABLE)); \ - _V3Write16 (V3_LB_MAP1, \ - (((INTEGRATOR_PCI_BASE + 0x10000000) & 0xFFF00000) >> 16) | 0x0006); \ - \ - /* And shrink base0 back to a 256M window (NOTE: MAP0 already correct) */ \ - \ - _V3Write32 (V3_LB_BASE0, ((INTEGRATOR_PCI_BASE & 0xFFF00000) | \ - 0x80 | V3_LB_BASE_M_ENABLE)); \ +static void v3_close_config_window(void) +{ + /* + * Reassign base1 for use by prefetchable PCI memory + */ + v3_writel(V3_LB_BASE1, v3_addr_to_lb_base(PHYS_PCI_MEM_BASE + SZ_256M) | + V3_LB_BASE_ADR_SIZE_256MB | V3_LB_BASE_PREFETCH | + V3_LB_BASE_ENABLE); + v3_writew(V3_LB_MAP1, v3_addr_to_lb_map(PCI_BUS_PREMEM_START) | + V3_LB_MAP_TYPE_MEM_MULTIPLE); + + /* + * And shrink base0 back to a 256M window (NOTE: MAP0 already correct) + */ + v3_writel(V3_LB_BASE0, v3_addr_to_lb_base(PHYS_PCI_MEM_BASE) | + V3_LB_BASE_ADR_SIZE_256MB | V3_LB_BASE_ENABLE); } -static int pci_integrator_read_byte (struct pci_controller *hose, pci_dev_t dev, - int offset, unsigned char *val) +static int pci_integrator_read_byte(struct pci_controller *hose, pci_dev_t bdf, + int offset, unsigned char *val) { - _V3OpenConfigWindow (); - *val = *(volatile unsigned char *) PCI_CONFIG_ADDRESS (PCI_BUS (dev), - PCI_FUNC (dev), - offset); - _V3CloseConfigWindow (); + unsigned long addr; + addr = v3_open_config_window(bdf, offset); + *val = __raw_readb(addr); + v3_close_config_window(); return 0; } -static int pci_integrator_read__word (struct pci_controller *hose, - pci_dev_t dev, int offset, - unsigned short *val) +static int pci_integrator_read__word(struct pci_controller *hose, + pci_dev_t bdf, int offset, + unsigned short *val) { - _V3OpenConfigWindow (); - *val = *(volatile unsigned short *) PCI_CONFIG_ADDRESS (PCI_BUS (dev), - PCI_FUNC (dev), - offset); - _V3CloseConfigWindow (); + unsigned long addr; + addr = v3_open_config_window(bdf, offset); + *val = __raw_readw(addr); + v3_close_config_window(); return 0; } -static int pci_integrator_read_dword (struct pci_controller *hose, - pci_dev_t dev, int offset, - unsigned int *val) +static int pci_integrator_read_dword(struct pci_controller *hose, + pci_dev_t bdf, int offset, + unsigned int *val) { - _V3OpenConfigWindow (); - *val = *(volatile unsigned short *) PCI_CONFIG_ADDRESS (PCI_BUS (dev), - PCI_FUNC (dev), - offset); - *val |= (*(volatile unsigned int *) - PCI_CONFIG_ADDRESS (PCI_BUS (dev), PCI_FUNC (dev), - (offset + 2))) << 16; - _V3CloseConfigWindow (); + unsigned long addr; + addr = v3_open_config_window(bdf, offset); + *val = __raw_readl(addr); + v3_close_config_window(); return 0; } -static int pci_integrator_write_byte (struct pci_controller *hose, - pci_dev_t dev, int offset, - unsigned char val) +static int pci_integrator_write_byte(struct pci_controller *hose, + pci_dev_t bdf, int offset, + unsigned char val) { - _V3OpenConfigWindow (); - *(volatile unsigned char *) PCI_CONFIG_ADDRESS (PCI_BUS (dev), - PCI_FUNC (dev), - offset) = val; - _V3CloseConfigWindow (); + unsigned long addr; + addr = v3_open_config_window(bdf, offset); + __raw_writeb((u8)val, addr); + __raw_readb(addr); + v3_close_config_window(); return 0; } -static int pci_integrator_write_word (struct pci_controller *hose, - pci_dev_t dev, int offset, - unsigned short val) +static int pci_integrator_write_word(struct pci_controller *hose, + pci_dev_t bdf, int offset, + unsigned short val) { - _V3OpenConfigWindow (); - *(volatile unsigned short *) PCI_CONFIG_ADDRESS (PCI_BUS (dev), - PCI_FUNC (dev), - offset) = val; - _V3CloseConfigWindow (); + unsigned long addr; + addr = v3_open_config_window(bdf, offset); + __raw_writew((u8)val, addr); + __raw_readw(addr); + v3_close_config_window(); return 0; } -static int pci_integrator_write_dword (struct pci_controller *hose, - pci_dev_t dev, int offset, - unsigned int val) +static int pci_integrator_write_dword(struct pci_controller *hose, + pci_dev_t bdf, int offset, + unsigned int val) { - _V3OpenConfigWindow (); - *(volatile unsigned short *) PCI_CONFIG_ADDRESS (PCI_BUS (dev), - PCI_FUNC (dev), - offset) = (val & 0xFFFF); - *(volatile unsigned short *) PCI_CONFIG_ADDRESS (PCI_BUS (dev), - PCI_FUNC (dev), - (offset + 2)) = ((val >> 16) & 0xFFFF); - _V3CloseConfigWindow (); + unsigned long addr; + addr = v3_open_config_window(bdf, offset); + __raw_writel((u8)val, addr); + __raw_readl(addr); + v3_close_config_window(); return 0; } -/****************************** - * PCI initialisation - ******************************/ struct pci_controller integrator_hose = { #ifndef CONFIG_PCI_PNP @@ -215,182 +281,198 @@ struct pci_controller integrator_hose = { #endif }; -void pci_init_board (void) +void pci_init_board(void) { volatile int i, j; struct pci_controller *hose = &integrator_hose; + u16 val; /* setting this register will take the V3 out of reset */ - - *(volatile unsigned int *) (INTEGRATOR_SC_PCIENABLE) = 1; + __raw_writel(SC_PCI_PCIEN, SC_PCI); /* wait a few usecs to settle the device and the PCI bus */ for (i = 0; i < 100; i++) j = i + 1; - /* Now write the Base I/O Address Word to V3_BASE + 0x6C */ - - *(volatile unsigned short *) (V3_BASE + V3_LB_IO_BASE) = - (unsigned short) (V3_BASE >> 16); + /* Now write the Base I/O Address Word to PHYS_PCI_V3_BASE + 0x6E */ + v3_writew(V3_LB_IO_BASE, (PHYS_PCI_V3_BASE >> 16)); + /* Wait for the mailbox to settle */ do { - *(volatile unsigned char *) (V3_BASE + V3_MAIL_DATA) = 0xAA; - *(volatile unsigned char *) (V3_BASE + V3_MAIL_DATA + 4) = - 0x55; - } while (*(volatile unsigned char *) (V3_BASE + V3_MAIL_DATA) != 0xAA - || *(volatile unsigned char *) (V3_BASE + V3_MAIL_DATA + - 4) != 0x55); + v3_writeb(V3_MAIL_DATA, 0xAA); + v3_writeb(V3_MAIL_DATA + 4, 0x55); + } while (v3_readb(V3_MAIL_DATA) != 0xAA || + v3_readb(V3_MAIL_DATA + 4) != 0x55); /* Make sure that V3 register access is not locked, if it is, unlock it */ + if (v3_readw(V3_SYSTEM) & V3_SYSTEM_M_LOCK) + v3_writew(V3_SYSTEM, 0xA05F); - if ((*(volatile unsigned short *) (V3_BASE + V3_SYSTEM) & - V3_SYSTEM_M_LOCK) - == V3_SYSTEM_M_LOCK) - *(volatile unsigned short *) (V3_BASE + V3_SYSTEM) = 0xA05F; - - /* Ensure that the slave accesses from PCI are disabled while we */ - /* setup windows */ - - *(volatile unsigned short *) (V3_BASE + V3_PCI_CMD) &= - ~(V3_COMMAND_M_MEM_EN | V3_COMMAND_M_IO_EN); + /* + * Ensure that the slave accesses from PCI are disabled while we + * setup memory windows + */ + val = v3_readw(V3_PCI_CMD); + val &= ~(V3_COMMAND_M_MEM_EN | V3_COMMAND_M_IO_EN); + v3_writew(V3_PCI_CMD, val); /* Clear RST_OUT to 0; keep the PCI bus in reset until we've finished */ - - *(volatile unsigned short *) (V3_BASE + V3_SYSTEM) &= - ~V3_SYSTEM_M_RST_OUT; + val = v3_readw(V3_SYSTEM); + val &= ~V3_SYSTEM_M_RST_OUT; + v3_writew(V3_SYSTEM, val); /* Make all accesses from PCI space retry until we're ready for them */ + val = v3_readw(V3_PCI_CFG); + val |= V3_PCI_CFG_M_RETRY_EN; + v3_writew(V3_PCI_CFG, val); - *(volatile unsigned short *) (V3_BASE + V3_PCI_CFG) |= - V3_PCI_CFG_M_RETRY_EN; - - /* Set up any V3 PCI Configuration Registers that we absolutely have to */ - /* LB_CFG controls Local Bus protocol. */ - /* Enable LocalBus byte strobes for READ accesses too. */ - /* set bit 7 BE_IMODE and bit 6 BE_OMODE */ - - *(volatile unsigned short *) (V3_BASE + V3_LB_CFG) |= 0x0C0; - - /* PCI_CMD controls overall PCI operation. */ - /* Enable PCI bus master. */ - - *(volatile unsigned short *) (V3_BASE + V3_PCI_CMD) |= 0x04; + /* + * Set up any V3 PCI Configuration Registers that we absolutely have to. + * LB_CFG controls Local Bus protocol. + * Enable LocalBus byte strobes for READ accesses too. + * set bit 7 BE_IMODE and bit 6 BE_OMODE + */ + val = v3_readw(V3_LB_CFG); + val |= 0x0C0; + v3_writew(V3_LB_CFG, val); - /* PCI_MAP0 controls where the PCI to CPU memory window is on Local Bus */ + /* PCI_CMD controls overall PCI operation. Enable PCI bus master. */ + val = v3_readw(V3_PCI_CMD); + val |= V3_COMMAND_M_MASTER_EN; + v3_writew(V3_PCI_CMD, val); - *(volatile unsigned int *) (V3_BASE + V3_PCI_MAP0) = - (INTEGRATOR_BOOT_ROM_BASE) | (V3_PCI_MAP_M_ADR_SIZE_512M | - V3_PCI_MAP_M_REG_EN | - V3_PCI_MAP_M_ENABLE); + /* + * PCI_MAP0 controls where the PCI to CPU memory window is on + * Local Bus + */ + v3_writel(V3_PCI_MAP0, + (INTEGRATOR_BOOT_ROM_BASE) | (V3_PCI_MAP_M_ADR_SIZE_512MB | + V3_PCI_MAP_M_REG_EN | + V3_PCI_MAP_M_ENABLE)); /* PCI_BASE0 is the PCI address of the start of the window */ - - *(volatile unsigned int *) (V3_BASE + V3_PCI_BASE0) = - INTEGRATOR_BOOT_ROM_BASE; + v3_writel(V3_PCI_BASE0, INTEGRATOR_BOOT_ROM_BASE); /* PCI_MAP1 is LOCAL address of the start of the window */ - - *(volatile unsigned int *) (V3_BASE + V3_PCI_MAP1) = - (INTEGRATOR_HDR0_SDRAM_BASE) | (V3_PCI_MAP_M_ADR_SIZE_1024M | - V3_PCI_MAP_M_REG_EN | - V3_PCI_MAP_M_ENABLE); + v3_writel(V3_PCI_MAP1, + (INTEGRATOR_HDR0_SDRAM_BASE) | (V3_PCI_MAP_M_ADR_SIZE_1GB | + V3_PCI_MAP_M_REG_EN | + V3_PCI_MAP_M_ENABLE)); /* PCI_BASE1 is the PCI address of the start of the window */ + v3_writel(V3_PCI_BASE1, INTEGRATOR_HDR0_SDRAM_BASE); - *(volatile unsigned int *) (V3_BASE + V3_PCI_BASE1) = - INTEGRATOR_HDR0_SDRAM_BASE; - - /* Set up the windows from local bus memory into PCI configuration, */ - /* I/O and Memory. */ - /* PCI I/O, LB_BASE2 and LB_MAP2 are used exclusively for this. */ - - *(volatile unsigned short *) (V3_BASE + V3_LB_BASE2) = - ((CPU_PCI_IO_ADRS >> 24) << 8) | V3_LB_BASE_M_ENABLE; - *(volatile unsigned short *) (V3_BASE + V3_LB_MAP2) = 0; + /* + * Set up memory the windows from local bus memory into PCI + * configuration, I/O and Memory regions. + * PCI I/O, LB_BASE2 and LB_MAP2 are used exclusively for this. + */ + v3_writew(V3_LB_BASE2, + v3_addr_to_lb_map(PHYS_PCI_IO_BASE) | V3_LB_BASE_ENABLE); + v3_writew(V3_LB_MAP2, 0); /* PCI Configuration, use LB_BASE1/LB_MAP1. */ - /* PCI Memory use LB_BASE0/LB_MAP0 and LB_BASE1/LB_MAP1 */ - /* Map first 256Mbytes as non-prefetchable via BASE0/MAP0 */ - /* (INTEGRATOR_PCI_BASE == PCI_MEM_BASE) */ - - *(volatile unsigned int *) (V3_BASE + V3_LB_BASE0) = - INTEGRATOR_PCI_BASE | (0x80 | V3_LB_BASE_M_ENABLE); - - *(volatile unsigned short *) (V3_BASE + V3_LB_MAP0) = - ((INTEGRATOR_PCI_BASE >> 20) << 0x4) | 0x0006; + /* + * PCI Memory use LB_BASE0/LB_MAP0 and LB_BASE1/LB_MAP1 + * Map first 256Mbytes as non-prefetchable via BASE0/MAP0 + */ + v3_writel(V3_LB_BASE0, v3_addr_to_lb_base(PHYS_PCI_MEM_BASE) | + V3_LB_BASE_ADR_SIZE_256MB | V3_LB_BASE_ENABLE); + v3_writew(V3_LB_MAP0, + v3_addr_to_lb_map(PCI_BUS_NONMEM_START) | V3_LB_MAP_TYPE_MEM); /* Map second 256 Mbytes as prefetchable via BASE1/MAP1 */ + v3_writel(V3_LB_BASE1, v3_addr_to_lb_base(PHYS_PCI_MEM_BASE + SZ_256M) | + V3_LB_BASE_ADR_SIZE_256MB | V3_LB_BASE_PREFETCH | + V3_LB_BASE_ENABLE); + v3_writew(V3_LB_MAP1, v3_addr_to_lb_map(PCI_BUS_PREMEM_START) | + V3_LB_MAP_TYPE_MEM_MULTIPLE); + + /* Dump PCI to local address space mappings */ + debug("LB_BASE0 = %08x\n", v3_readl(V3_LB_BASE0)); + debug("LB_MAP0 = %04x\n", v3_readw(V3_LB_MAP0)); + debug("LB_BASE1 = %08x\n", v3_readl(V3_LB_BASE1)); + debug("LB_MAP1 = %04x\n", v3_readw(V3_LB_MAP1)); + debug("LB_BASE2 = %04x\n", v3_readw(V3_LB_BASE2)); + debug("LB_MAP2 = %04x\n", v3_readw(V3_LB_MAP2)); + debug("LB_IO_BASE = %04x\n", v3_readw(V3_LB_IO_BASE)); - *(volatile unsigned int *) (V3_BASE + V3_LB_BASE1) = - INTEGRATOR_PCI_BASE | (0x84 | V3_LB_BASE_M_ENABLE); - - *(volatile unsigned short *) (V3_BASE + V3_LB_MAP1) = - (((INTEGRATOR_PCI_BASE + 0x10000000) >> 20) << 4) | 0x0006; - - /* Allow accesses to PCI Configuration space */ - /* and set up A1, A0 for type 1 config cycles */ - - *(volatile unsigned short *) (V3_BASE + V3_PCI_CFG) = - ((*(volatile unsigned short *) (V3_BASE + V3_PCI_CFG)) & - ~(V3_PCI_CFG_M_RETRY_EN | V3_PCI_CFG_M_AD_LOW1)) | - V3_PCI_CFG_M_AD_LOW0; - - /* now we can allow in PCI MEMORY accesses */ - - *(volatile unsigned short *) (V3_BASE + V3_PCI_CMD) = - (*(volatile unsigned short *) (V3_BASE + V3_PCI_CMD)) | - V3_COMMAND_M_MEM_EN; + /* + * Allow accesses to PCI Configuration space and set up A1, A0 for + * type 1 config cycles + */ + val = v3_readw(V3_PCI_CFG); + val &= ~(V3_PCI_CFG_M_RETRY_EN | V3_PCI_CFG_M_AD_LOW1); + val |= V3_PCI_CFG_M_AD_LOW0; + v3_writew(V3_PCI_CFG, val); - /* Set RST_OUT to take the PCI bus is out of reset, PCI devices can */ - /* initialise and lock the V3 system register so that no one else */ - /* can play with it */ + /* now we can allow incoming PCI MEMORY accesses */ + val = v3_readw(V3_PCI_CMD); + val |= V3_COMMAND_M_MEM_EN; + v3_writew(V3_PCI_CMD, val); - *(volatile unsigned short *) (V3_BASE + V3_SYSTEM) = - (*(volatile unsigned short *) (V3_BASE + V3_SYSTEM)) | - V3_SYSTEM_M_RST_OUT; + /* + * Set RST_OUT to take the PCI bus is out of reset, PCI devices can + * now initialise. + */ + val = v3_readw(V3_SYSTEM); + val |= V3_SYSTEM_M_RST_OUT; + v3_writew(V3_SYSTEM, val); - *(volatile unsigned short *) (V3_BASE + V3_SYSTEM) = - (*(volatile unsigned short *) (V3_BASE + V3_SYSTEM)) | - V3_SYSTEM_M_LOCK; + /* Lock the V3 system register so that no one else can play with it */ + val = v3_readw(V3_SYSTEM); + val |= V3_SYSTEM_M_LOCK; + v3_writew(V3_SYSTEM, val); /* - * Register the hose + * Configure and register the PCI hose */ hose->first_busno = 0; hose->last_busno = 0xff; - /* System memory space */ - pci_set_region (hose->regions + 0, - 0x00000000, 0x40000000, 0x01000000, - PCI_REGION_MEM | PCI_REGION_SYS_MEMORY); + /* System memory space, window 0 256 MB non-prefetchable */ + pci_set_region(hose->regions + 0, + PCI_BUS_NONMEM_START, PHYS_PCI_MEM_BASE, + SZ_256M, + PCI_REGION_MEM); - /* PCI Memory - config space */ - pci_set_region (hose->regions + 1, - 0x00000000, 0x62000000, 0x01000000, PCI_REGION_MEM); - - /* PCI V3 regs */ - pci_set_region (hose->regions + 2, - 0x00000000, 0x61000000, 0x00080000, PCI_REGION_MEM); + /* System memory space, window 1 256 MB prefetchable */ + pci_set_region(hose->regions + 1, + PCI_BUS_PREMEM_START, PHYS_PCI_MEM_BASE + SZ_256M, + SZ_256M, + PCI_REGION_MEM | + PCI_REGION_PREFETCH); /* PCI I/O space */ - pci_set_region (hose->regions + 3, - 0x00000000, 0x60000000, 0x00010000, PCI_REGION_IO); + pci_set_region(hose->regions + 2, + 0x00000000, PHYS_PCI_IO_BASE, 0x01000000, + PCI_REGION_IO); + + /* PCI Memory - config space */ + pci_set_region(hose->regions + 3, + 0x00000000, PHYS_PCI_CONFIG_BASE, 0x01000000, + PCI_REGION_MEM); + /* PCI V3 regs */ + pci_set_region(hose->regions + 4, + 0x00000000, PHYS_PCI_V3_BASE, 0x01000000, + PCI_REGION_MEM); - pci_set_ops (hose, - pci_integrator_read_byte, - pci_integrator_read__word, - pci_integrator_read_dword, - pci_integrator_write_byte, - pci_integrator_write_word, pci_integrator_write_dword); + hose->region_count = 5; - hose->region_count = 4; + pci_set_ops(hose, + pci_integrator_read_byte, + pci_integrator_read__word, + pci_integrator_read_dword, + pci_integrator_write_byte, + pci_integrator_write_word, + pci_integrator_write_dword); - pci_register_hose (hose); + pci_register_hose(hose); - pciauto_config_init (hose); - pciauto_config_device (hose, 0); + pciauto_config_init(hose); + pciauto_config_device(hose, 0); - hose->last_busno = pci_hose_scan (hose); + hose->last_busno = pci_hose_scan(hose); } diff --git a/board/armltd/integrator/pci_v3.h b/board/armltd/integrator/pci_v3.h new file mode 100644 index 0000000..39a0c41 --- /dev/null +++ b/board/armltd/integrator/pci_v3.h @@ -0,0 +1,200 @@ +/* + * arch/arm/include/asm/hardware/pci_v3.h + * + * Internal header file PCI V3 chip + * + * Copyright (C) ARM Limited + * Copyright (C) 2000-2001 Deep Blue Solutions Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#ifndef ASM_ARM_HARDWARE_PCI_V3_H +#define ASM_ARM_HARDWARE_PCI_V3_H + +/* ------------------------------------------------------------------------------- + * V3 Local Bus to PCI Bridge definitions + * ------------------------------------------------------------------------------- + * Registers (these are taken from page 129 of the EPC User's Manual Rev 1.04 + * All V3 register names are prefaced by V3_ to avoid clashing with any other + * PCI definitions. Their names match the user's manual. + * + * I'm assuming that I20 is disabled. + * + */ +#define V3_PCI_VENDOR 0x00000000 +#define V3_PCI_DEVICE 0x00000002 +#define V3_PCI_CMD 0x00000004 +#define V3_PCI_STAT 0x00000006 +#define V3_PCI_CC_REV 0x00000008 +#define V3_PCI_HDR_CFG 0x0000000C +#define V3_PCI_IO_BASE 0x00000010 +#define V3_PCI_BASE0 0x00000014 +#define V3_PCI_BASE1 0x00000018 +#define V3_PCI_SUB_VENDOR 0x0000002C +#define V3_PCI_SUB_ID 0x0000002E +#define V3_PCI_ROM 0x00000030 +#define V3_PCI_BPARAM 0x0000003C +#define V3_PCI_MAP0 0x00000040 +#define V3_PCI_MAP1 0x00000044 +#define V3_PCI_INT_STAT 0x00000048 +#define V3_PCI_INT_CFG 0x0000004C +#define V3_LB_BASE0 0x00000054 +#define V3_LB_BASE1 0x00000058 +#define V3_LB_MAP0 0x0000005E +#define V3_LB_MAP1 0x00000062 +#define V3_LB_BASE2 0x00000064 +#define V3_LB_MAP2 0x00000066 +#define V3_LB_SIZE 0x00000068 +#define V3_LB_IO_BASE 0x0000006E +#define V3_FIFO_CFG 0x00000070 +#define V3_FIFO_PRIORITY 0x00000072 +#define V3_FIFO_STAT 0x00000074 +#define V3_LB_ISTAT 0x00000076 +#define V3_LB_IMASK 0x00000077 +#define V3_SYSTEM 0x00000078 +#define V3_LB_CFG 0x0000007A +#define V3_PCI_CFG 0x0000007C +#define V3_DMA_PCI_ADR0 0x00000080 +#define V3_DMA_PCI_ADR1 0x00000090 +#define V3_DMA_LOCAL_ADR0 0x00000084 +#define V3_DMA_LOCAL_ADR1 0x00000094 +#define V3_DMA_LENGTH0 0x00000088 +#define V3_DMA_LENGTH1 0x00000098 +#define V3_DMA_CSR0 0x0000008B +#define V3_DMA_CSR1 0x0000009B +#define V3_DMA_CTLB_ADR0 0x0000008C +#define V3_DMA_CTLB_ADR1 0x0000009C +#define V3_DMA_DELAY 0x000000E0 +#define V3_MAIL_DATA 0x000000C0 +#define V3_PCI_MAIL_IEWR 0x000000D0 +#define V3_PCI_MAIL_IERD 0x000000D2 +#define V3_LB_MAIL_IEWR 0x000000D4 +#define V3_LB_MAIL_IERD 0x000000D6 +#define V3_MAIL_WR_STAT 0x000000D8 +#define V3_MAIL_RD_STAT 0x000000DA +#define V3_QBA_MAP 0x000000DC + +/* PCI COMMAND REGISTER bits + */ +#define V3_COMMAND_M_FBB_EN (1 << 9) +#define V3_COMMAND_M_SERR_EN (1 << 8) +#define V3_COMMAND_M_PAR_EN (1 << 6) +#define V3_COMMAND_M_MASTER_EN (1 << 2) +#define V3_COMMAND_M_MEM_EN (1 << 1) +#define V3_COMMAND_M_IO_EN (1 << 0) + +/* SYSTEM REGISTER bits + */ +#define V3_SYSTEM_M_RST_OUT (1 << 15) +#define V3_SYSTEM_M_LOCK (1 << 14) + +/* PCI_CFG bits + */ +#define V3_PCI_CFG_M_I2O_EN (1 << 15) +#define V3_PCI_CFG_M_IO_REG_DIS (1 << 14) +#define V3_PCI_CFG_M_IO_DIS (1 << 13) +#define V3_PCI_CFG_M_EN3V (1 << 12) +#define V3_PCI_CFG_M_RETRY_EN (1 << 10) +#define V3_PCI_CFG_M_AD_LOW1 (1 << 9) +#define V3_PCI_CFG_M_AD_LOW0 (1 << 8) + +/* PCI_BASE register bits (PCI -> Local Bus) + */ +#define V3_PCI_BASE_M_ADR_BASE 0xFFF00000 +#define V3_PCI_BASE_M_ADR_BASEL 0x000FFF00 +#define V3_PCI_BASE_M_PREFETCH (1 << 3) +#define V3_PCI_BASE_M_TYPE (3 << 1) +#define V3_PCI_BASE_M_IO (1 << 0) + +/* PCI MAP register bits (PCI -> Local bus) + */ +#define V3_PCI_MAP_M_MAP_ADR 0xFFF00000 +#define V3_PCI_MAP_M_RD_POST_INH (1 << 15) +#define V3_PCI_MAP_M_ROM_SIZE (3 << 10) +#define V3_PCI_MAP_M_SWAP (3 << 8) +#define V3_PCI_MAP_M_ADR_SIZE 0x000000F0 +#define V3_PCI_MAP_M_REG_EN (1 << 1) +#define V3_PCI_MAP_M_ENABLE (1 << 0) + +#define V3_PCI_MAP_M_ADR_SIZE_1MB (0 << 4) +#define V3_PCI_MAP_M_ADR_SIZE_2MB (1 << 4) +#define V3_PCI_MAP_M_ADR_SIZE_4MB (2 << 4) +#define V3_PCI_MAP_M_ADR_SIZE_8MB (3 << 4) +#define V3_PCI_MAP_M_ADR_SIZE_16MB (4 << 4) +#define V3_PCI_MAP_M_ADR_SIZE_32MB (5 << 4) +#define V3_PCI_MAP_M_ADR_SIZE_64MB (6 << 4) +#define V3_PCI_MAP_M_ADR_SIZE_128MB (7 << 4) +#define V3_PCI_MAP_M_ADR_SIZE_256MB (8 << 4) +#define V3_PCI_MAP_M_ADR_SIZE_512MB (9 << 4) +#define V3_PCI_MAP_M_ADR_SIZE_1GB (10 << 4) +#define V3_PCI_MAP_M_ADR_SIZE_2GB (11 << 4) + +/* + * LB_BASE0,1 register bits (Local bus -> PCI) + */ +#define V3_LB_BASE_ADR_BASE 0xfff00000 +#define V3_LB_BASE_SWAP (3 << 8) +#define V3_LB_BASE_ADR_SIZE (15 << 4) +#define V3_LB_BASE_PREFETCH (1 << 3) +#define V3_LB_BASE_ENABLE (1 << 0) + +#define V3_LB_BASE_ADR_SIZE_1MB (0 << 4) +#define V3_LB_BASE_ADR_SIZE_2MB (1 << 4) +#define V3_LB_BASE_ADR_SIZE_4MB (2 << 4) +#define V3_LB_BASE_ADR_SIZE_8MB (3 << 4) +#define V3_LB_BASE_ADR_SIZE_16MB (4 << 4) +#define V3_LB_BASE_ADR_SIZE_32MB (5 << 4) +#define V3_LB_BASE_ADR_SIZE_64MB (6 << 4) +#define V3_LB_BASE_ADR_SIZE_128MB (7 << 4) +#define V3_LB_BASE_ADR_SIZE_256MB (8 << 4) +#define V3_LB_BASE_ADR_SIZE_512MB (9 << 4) +#define V3_LB_BASE_ADR_SIZE_1GB (10 << 4) +#define V3_LB_BASE_ADR_SIZE_2GB (11 << 4) + +#define v3_addr_to_lb_base(a) ((a) & V3_LB_BASE_ADR_BASE) + +/* + * LB_MAP0,1 register bits (Local bus -> PCI) + */ +#define V3_LB_MAP_MAP_ADR 0xfff0 +#define V3_LB_MAP_TYPE (7 << 1) +#define V3_LB_MAP_AD_LOW_EN (1 << 0) + +#define V3_LB_MAP_TYPE_IACK (0 << 1) +#define V3_LB_MAP_TYPE_IO (1 << 1) +#define V3_LB_MAP_TYPE_MEM (3 << 1) +#define V3_LB_MAP_TYPE_CONFIG (5 << 1) +#define V3_LB_MAP_TYPE_MEM_MULTIPLE (6 << 1) + +/* PCI MAP register bits (PCI -> Local bus) */ +#define v3_addr_to_lb_map(a) (((a) >> 16) & V3_LB_MAP_MAP_ADR) + +/* + * LB_BASE2 register bits (Local bus -> PCI IO) + */ +#define V3_LB_BASE2_ADR_BASE 0xff00 +#define V3_LB_BASE2_SWAP (3 << 6) +#define V3_LB_BASE2_ENABLE (1 << 0) + +#define v3_addr_to_lb_base2(a) (((a) >> 16) & V3_LB_BASE2_ADR_BASE) + +/* + * LB_MAP2 register bits (Local bus -> PCI IO) + */ +#define V3_LB_MAP2_MAP_ADR 0xff00 + +#define v3_addr_to_lb_map2(a) (((a) >> 16) & V3_LB_MAP2_MAP_ADR) + +#endif |