+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* ARM Ltd.
* Philippe Robin, <philippe.robin@arm.com>
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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
+ * (C) Copyright 2011
+ * Linaro
+ * Linus Walleij <linus.walleij@linaro.org>
*/
-
#include <common.h>
+#include <init.h>
+#include <log.h>
#include <pci.h>
+#include <asm/io.h>
+#include <linux/bug.h>
+#include <linux/delay.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,
#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
#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 */
+ __raw_writel(SC_PCI_PCIEN, SC_PCI);
- *(volatile unsigned int *) (INTEGRATOR_SC_PCIENABLE) = 1;
+ /* Wait for 230 ms (from spec) before accessing any V3 registers */
+ mdelay(230);
- /* 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);
}
projects / oweals / u-boot.git / blobdiff