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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (c) 2000-2006 PMC-Sierra INC.
*
* PMC-SIERRA INC. DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS
* SOFTWARE.
*/
#ifndef _MSP_PCI_H_
#define _MSP_PCI_H_
#define MSP_HAS_PCI(ID) (((u32)(ID) <= 0x4236) && ((u32)(ID) >= 0x4220))
/*
* It is convenient to program the OATRAN register so that
* Athena virtual address space and PCI address space are
* the same. This is not a requirement, just a convenience.
*
* The only hard restrictions on the value of OATRAN is that
* OATRAN must not be programmed to allow translated memory
* addresses to fall within the lowest 512MB of
* PCI address space. This region is hardcoded
* for use as Athena PCI Host Controller target
* access memory space to the Athena's SDRAM.
*
* Note that OATRAN applies only to memory accesses, not
* to I/O accesses.
*
* To program OATRAN to make Athena virtual address space
* and PCI address space have the same values, OATRAN
* is to be programmed to 0xB8000000. The top seven
* bits of the value mimic the seven bits clipped off
* by the PCI Host controller.
*
* With OATRAN at the said value, when the CPU does
* an access to its virtual address at, say 0xB900_5000,
* the address appearing on the PCI bus will be
* 0xB900_5000.
* - Michael Penner
*/
#define MSP_PCI_OATRAN 0xB8000000UL
#define MSP_PCI_SPACE_BASE (MSP_PCI_OATRAN + 0x1002000UL)
#define MSP_PCI_SPACE_SIZE (0x3000000UL - 0x2000)
#define MSP_PCI_SPACE_END \
(MSP_PCI_SPACE_BASE + MSP_PCI_SPACE_SIZE - 1)
#define MSP_PCI_IOSPACE_BASE (MSP_PCI_OATRAN + 0x1001000UL)
#define MSP_PCI_IOSPACE_SIZE 0x1000
#define MSP_PCI_IOSPACE_END \
(MSP_PCI_IOSPACE_BASE + MSP_PCI_IOSPACE_SIZE - 1)
/* IRQ for PCI status interrupts */
#define PCI_STAT_IRQ 20
#define QFLUSH_REG_1 0xB7F40000
typedef volatile unsigned int pcireg;
typedef void * volatile ppcireg;
struct pci_block_copy
{
pcireg unused1; /* +0x00 */
pcireg unused2; /* +0x04 */
ppcireg unused3; /* +0x08 */
ppcireg unused4; /* +0x0C */
pcireg unused5; /* +0x10 */
pcireg unused6; /* +0x14 */
pcireg unused7; /* +0x18 */
ppcireg unused8; /* +0x1C */
ppcireg unused9; /* +0x20 */
pcireg unusedA; /* +0x24 */
ppcireg unusedB; /* +0x28 */
ppcireg unusedC; /* +0x2C */
};
enum
{
config_device_vendor, /* 0 */
config_status_command, /* 1 */
config_class_revision, /* 2 */
config_BIST_header_latency_cache, /* 3 */
config_BAR0, /* 4 */
config_BAR1, /* 5 */
config_BAR2, /* 6 */
config_not_used7, /* 7 */
config_not_used8, /* 8 */
config_not_used9, /* 9 */
config_CIS, /* 10 */
config_subsystem, /* 11 */
config_not_used12, /* 12 */
config_capabilities, /* 13 */
config_not_used14, /* 14 */
config_lat_grant_irq, /* 15 */
config_message_control,/* 16 */
config_message_addr, /* 17 */
config_message_data, /* 18 */
config_VPD_addr, /* 19 */
config_VPD_data, /* 20 */
config_maxregs /* 21 - number of registers */
};
struct msp_pci_regs
{
pcireg hop_unused_00; /* +0x00 */
pcireg hop_unused_04; /* +0x04 */
pcireg hop_unused_08; /* +0x08 */
pcireg hop_unused_0C; /* +0x0C */
pcireg hop_unused_10; /* +0x10 */
pcireg hop_unused_14; /* +0x14 */
pcireg hop_unused_18; /* +0x18 */
pcireg hop_unused_1C; /* +0x1C */
pcireg hop_unused_20; /* +0x20 */
pcireg hop_unused_24; /* +0x24 */
pcireg hop_unused_28; /* +0x28 */
pcireg hop_unused_2C; /* +0x2C */
pcireg hop_unused_30; /* +0x30 */
pcireg hop_unused_34; /* +0x34 */
pcireg if_control; /* +0x38 */
pcireg oatran; /* +0x3C */
pcireg reset_ctl; /* +0x40 */
pcireg config_addr; /* +0x44 */
pcireg hop_unused_48; /* +0x48 */
pcireg msg_signaled_int_status; /* +0x4C */
pcireg msg_signaled_int_mask; /* +0x50 */
pcireg if_status; /* +0x54 */
pcireg if_mask; /* +0x58 */
pcireg hop_unused_5C; /* +0x5C */
pcireg hop_unused_60; /* +0x60 */
pcireg hop_unused_64; /* +0x64 */
pcireg hop_unused_68; /* +0x68 */
pcireg hop_unused_6C; /* +0x6C */
pcireg hop_unused_70; /* +0x70 */
struct pci_block_copy pci_bc[2] __attribute__((aligned(64)));
pcireg error_hdr1; /* +0xE0 */
pcireg error_hdr2; /* +0xE4 */
pcireg config[config_maxregs] __attribute__((aligned(256)));
};
#define BPCI_CFGADDR_BUSNUM_SHF 16
#define BPCI_CFGADDR_FUNCTNUM_SHF 8
#define BPCI_CFGADDR_REGNUM_SHF 2
#define BPCI_CFGADDR_ENABLE (1<<31)
#define BPCI_IFCONTROL_RTO (1<<20) /* Retry timeout */
#define BPCI_IFCONTROL_HCE (1<<16) /* Host configuration enable */
#define BPCI_IFCONTROL_CTO_SHF 12 /* Shift count for CTO bits */
#define BPCI_IFCONTROL_SE (1<<5) /* Enable exceptions on errors */
#define BPCI_IFCONTROL_BIST (1<<4) /* Use BIST in per. mode */
#define BPCI_IFCONTROL_CAP (1<<3) /* Enable capabilities */
#define BPCI_IFCONTROL_MMC_SHF 0 /* Shift count for MMC bits */
#define BPCI_IFSTATUS_MGT (1<<8) /* Master Grant timeout */
#define BPCI_IFSTATUS_MTT (1<<9) /* Master TRDY timeout */
#define BPCI_IFSTATUS_MRT (1<<10) /* Master retry timeout */
#define BPCI_IFSTATUS_BC0F (1<<13) /* Block copy 0 fault */
#define BPCI_IFSTATUS_BC1F (1<<14) /* Block copy 1 fault */
#define BPCI_IFSTATUS_PCIU (1<<15) /* PCI unable to respond */
#define BPCI_IFSTATUS_BSIZ (1<<16) /* PCI access with illegal size */
#define BPCI_IFSTATUS_BADD (1<<17) /* PCI access with illegal addr */
#define BPCI_IFSTATUS_RTO (1<<18) /* Retry time out */
#define BPCI_IFSTATUS_SER (1<<19) /* System error */
#define BPCI_IFSTATUS_PER (1<<20) /* Parity error */
#define BPCI_IFSTATUS_LCA (1<<21) /* Local CPU abort */
#define BPCI_IFSTATUS_MEM (1<<22) /* Memory prot. violation */
#define BPCI_IFSTATUS_ARB (1<<23) /* Arbiter timed out */
#define BPCI_IFSTATUS_STA (1<<27) /* Signaled target abort */
#define BPCI_IFSTATUS_TA (1<<28) /* Target abort */
#define BPCI_IFSTATUS_MA (1<<29) /* Master abort */
#define BPCI_IFSTATUS_PEI (1<<30) /* Parity error as initiator */
#define BPCI_IFSTATUS_PET (1<<31) /* Parity error as target */
#define BPCI_RESETCTL_PR (1<<0) /* True if reset asserted */
#define BPCI_RESETCTL_RT (1<<4) /* Release time */
#define BPCI_RESETCTL_CT (1<<8) /* Config time */
#define BPCI_RESETCTL_PE (1<<12) /* PCI enabled */
#define BPCI_RESETCTL_HM (1<<13) /* PCI host mode */
#define BPCI_RESETCTL_RI (1<<14) /* PCI reset in */
extern struct msp_pci_regs msp_pci_regs
__attribute__((section(".register")));
extern unsigned long msp_pci_config_space
__attribute__((section(".register")));
#endif /* !_MSP_PCI_H_ */
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