u-boot/arch/powerpc/cpu/mpc85xx/pci.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

213 lines
5.7 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2004 Freescale Semiconductor.
* Copyright (C) 2003 Motorola Inc.
* Xianghua Xiao (x.xiao@motorola.com)
*/
/*
* PCI Configuration space access support for MPC85xx PCI Bridge
*/
#include <common.h>
#include <asm/cpm_85xx.h>
#include <pci.h>
#if !defined(CONFIG_FSL_PCI_INIT)
#ifndef CONFIG_SYS_PCI1_MEM_BUS
#define CONFIG_SYS_PCI1_MEM_BUS CONFIG_SYS_PCI1_MEM_BASE
#endif
#ifndef CONFIG_SYS_PCI1_IO_BUS
#define CONFIG_SYS_PCI1_IO_BUS CONFIG_SYS_PCI1_IO_BASE
#endif
#ifndef CONFIG_SYS_PCI2_MEM_BUS
#define CONFIG_SYS_PCI2_MEM_BUS CONFIG_SYS_PCI2_MEM_BASE
#endif
#ifndef CONFIG_SYS_PCI2_IO_BUS
#define CONFIG_SYS_PCI2_IO_BUS CONFIG_SYS_PCI2_IO_BASE
#endif
static struct pci_controller *pci_hose;
void
pci_mpc85xx_init(struct pci_controller *board_hose)
{
u16 reg16;
u32 dev;
volatile ccsr_pcix_t *pcix = (void *)(CONFIG_SYS_MPC85xx_PCIX_ADDR);
#ifdef CONFIG_MPC85XX_PCI2
volatile ccsr_pcix_t *pcix2 = (void *)(CONFIG_SYS_MPC85xx_PCIX2_ADDR);
#endif
volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
struct pci_controller * hose;
pci_hose = board_hose;
hose = &pci_hose[0];
hose->first_busno = 0;
hose->last_busno = 0xff;
pci_setup_indirect(hose,
(CONFIG_SYS_IMMR+0x8000),
(CONFIG_SYS_IMMR+0x8004));
/*
* Hose scan.
*/
dev = PCI_BDF(hose->first_busno, 0, 0);
pci_hose_read_config_word (hose, dev, PCI_COMMAND, &reg16);
reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
pci_hose_write_config_word(hose, dev, PCI_COMMAND, reg16);
/*
* Clear non-reserved bits in status register.
*/
pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff);
if (!(gur->pordevsr & MPC85xx_PORDEVSR_PCI1)) {
/* PCI-X init */
if (CONFIG_SYS_CLK_FREQ < 66000000)
printf("PCI-X will only work at 66 MHz\n");
reg16 = PCI_X_CMD_MAX_SPLIT | PCI_X_CMD_MAX_READ
| PCI_X_CMD_ERO | PCI_X_CMD_DPERR_E;
pci_hose_write_config_word(hose, dev, PCIX_COMMAND, reg16);
}
pcix->potar1 = (CONFIG_SYS_PCI1_MEM_BUS >> 12) & 0x000fffff;
pcix->potear1 = 0x00000000;
pcix->powbar1 = (CONFIG_SYS_PCI1_MEM_PHYS >> 12) & 0x000fffff;
pcix->powbear1 = 0x00000000;
pcix->powar1 = (POWAR_EN | POWAR_MEM_READ |
POWAR_MEM_WRITE | (__ilog2(CONFIG_SYS_PCI1_MEM_SIZE) - 1));
pcix->potar2 = (CONFIG_SYS_PCI1_IO_BUS >> 12) & 0x000fffff;
pcix->potear2 = 0x00000000;
pcix->powbar2 = (CONFIG_SYS_PCI1_IO_PHYS >> 12) & 0x000fffff;
pcix->powbear2 = 0x00000000;
pcix->powar2 = (POWAR_EN | POWAR_IO_READ |
POWAR_IO_WRITE | (__ilog2(CONFIG_SYS_PCI1_IO_SIZE) - 1));
pcix->pitar1 = 0x00000000;
pcix->piwbar1 = 0x00000000;
pcix->piwar1 = (PIWAR_EN | PIWAR_PF | PIWAR_LOCAL |
PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP | PIWAR_MEM_2G);
pcix->powar3 = 0;
pcix->powar4 = 0;
pcix->piwar2 = 0;
pcix->piwar3 = 0;
pci_set_region(hose->regions + 0,
CONFIG_SYS_PCI1_MEM_BUS,
CONFIG_SYS_PCI1_MEM_PHYS,
CONFIG_SYS_PCI1_MEM_SIZE,
PCI_REGION_MEM);
pci_set_region(hose->regions + 1,
CONFIG_SYS_PCI1_IO_BUS,
CONFIG_SYS_PCI1_IO_PHYS,
CONFIG_SYS_PCI1_IO_SIZE,
PCI_REGION_IO);
hose->region_count = 2;
pci_register_hose(hose);
#if defined(CONFIG_TARGET_MPC8555CDS) || defined(CONFIG_TARGET_MPC8541CDS)
/*
* This is a SW workaround for an apparent HW problem
* in the PCI controller on the MPC85555/41 CDS boards.
* The first config cycle must be to a valid, known
* device on the PCI bus in order to trick the PCI
* controller state machine into a known valid state.
* Without this, the first config cycle has the chance
* of hanging the controller permanently, just leaving
* it in a semi-working state, or leaving it working.
*
* Pick on the Tundra, Device 17, to get it right.
*/
{
u8 header_type;
pci_hose_read_config_byte(hose,
PCI_BDF(0,BRIDGE_ID,0),
PCI_HEADER_TYPE,
&header_type);
}
#endif
hose->last_busno = pci_hose_scan(hose);
#ifdef CONFIG_MPC85XX_PCI2
hose = &pci_hose[1];
hose->first_busno = pci_hose[0].last_busno + 1;
hose->last_busno = 0xff;
pci_setup_indirect(hose,
(CONFIG_SYS_IMMR+0x9000),
(CONFIG_SYS_IMMR+0x9004));
dev = PCI_BDF(hose->first_busno, 0, 0);
pci_hose_read_config_word (hose, dev, PCI_COMMAND, &reg16);
reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
pci_hose_write_config_word(hose, dev, PCI_COMMAND, reg16);
/*
* Clear non-reserved bits in status register.
*/
pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff);
pcix2->potar1 = (CONFIG_SYS_PCI2_MEM_BUS >> 12) & 0x000fffff;
pcix2->potear1 = 0x00000000;
pcix2->powbar1 = (CONFIG_SYS_PCI2_MEM_PHYS >> 12) & 0x000fffff;
pcix2->powbear1 = 0x00000000;
pcix2->powar1 = (POWAR_EN | POWAR_MEM_READ |
POWAR_MEM_WRITE | (__ilog2(CONFIG_SYS_PCI2_MEM_SIZE) - 1));
pcix2->potar2 = (CONFIG_SYS_PCI2_IO_BUS >> 12) & 0x000fffff;
pcix2->potear2 = 0x00000000;
pcix2->powbar2 = (CONFIG_SYS_PCI2_IO_PHYS >> 12) & 0x000fffff;
pcix2->powbear2 = 0x00000000;
pcix2->powar2 = (POWAR_EN | POWAR_IO_READ |
POWAR_IO_WRITE | (__ilog2(CONFIG_SYS_PCI2_IO_SIZE) - 1));
pcix2->pitar1 = 0x00000000;
pcix2->piwbar1 = 0x00000000;
pcix2->piwar1 = (PIWAR_EN | PIWAR_PF | PIWAR_LOCAL |
PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP | PIWAR_MEM_2G);
pcix2->powar3 = 0;
pcix2->powar4 = 0;
pcix2->piwar2 = 0;
pcix2->piwar3 = 0;
pci_set_region(hose->regions + 0,
CONFIG_SYS_PCI2_MEM_BUS,
CONFIG_SYS_PCI2_MEM_PHYS,
CONFIG_SYS_PCI2_MEM_SIZE,
PCI_REGION_MEM);
pci_set_region(hose->regions + 1,
CONFIG_SYS_PCI2_IO_BUS,
CONFIG_SYS_PCI2_IO_PHYS,
CONFIG_SYS_PCI2_IO_SIZE,
PCI_REGION_IO);
hose->region_count = 2;
/*
* Hose scan.
*/
pci_register_hose(hose);
hose->last_busno = pci_hose_scan(hose);
#endif
}
#endif /* !CONFIG_FSL_PCI_INIT */