233 lines
6.6 KiB
C
233 lines
6.6 KiB
C
#ifndef __ALPHA_IRONGATE__H__
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#define __ALPHA_IRONGATE__H__
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#include <linux/types.h>
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#include <asm/compiler.h>
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/*
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* IRONGATE is the internal name for the AMD-751 K7 core logic chipset
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* which provides memory controller and PCI access for NAUTILUS-based
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* EV6 (21264) systems.
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*
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* This file is based on:
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*
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* IronGate management library, (c) 1999 Alpha Processor, Inc.
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* Copyright (C) 1999 Alpha Processor, Inc.,
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* (David Daniel, Stig Telfer, Soohoon Lee)
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*/
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/*
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* The 21264 supports, and internally recognizes, a 44-bit physical
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* address space that is divided equally between memory address space
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* and I/O address space. Memory address space resides in the lower
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* half of the physical address space (PA[43]=0) and I/O address space
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* resides in the upper half of the physical address space (PA[43]=1).
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*/
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/*
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* Irongate CSR map. Some of the CSRs are 8 or 16 bits, but all access
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* through the routines given is 32-bit.
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*
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* The first 0x40 bytes are standard as per the PCI spec.
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*/
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typedef volatile __u32 igcsr32;
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typedef struct {
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igcsr32 dev_vendor; /* 0x00 - device ID, vendor ID */
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igcsr32 stat_cmd; /* 0x04 - status, command */
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igcsr32 class; /* 0x08 - class code, rev ID */
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igcsr32 latency; /* 0x0C - header type, PCI latency */
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igcsr32 bar0; /* 0x10 - BAR0 - AGP */
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igcsr32 bar1; /* 0x14 - BAR1 - GART */
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igcsr32 bar2; /* 0x18 - Power Management reg block */
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igcsr32 rsrvd0[6]; /* 0x1C-0x33 reserved */
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igcsr32 capptr; /* 0x34 - Capabilities pointer */
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igcsr32 rsrvd1[2]; /* 0x38-0x3F reserved */
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igcsr32 bacsr10; /* 0x40 - base address chip selects */
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igcsr32 bacsr32; /* 0x44 - base address chip selects */
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igcsr32 bacsr54_eccms761; /* 0x48 - 751: base addr. chip selects
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761: ECC, mode/status */
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igcsr32 rsrvd2[1]; /* 0x4C-0x4F reserved */
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igcsr32 drammap; /* 0x50 - address mapping control */
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igcsr32 dramtm; /* 0x54 - timing, driver strength */
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igcsr32 dramms; /* 0x58 - DRAM mode/status */
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igcsr32 rsrvd3[1]; /* 0x5C-0x5F reserved */
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igcsr32 biu0; /* 0x60 - bus interface unit */
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igcsr32 biusip; /* 0x64 - Serial initialisation pkt */
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igcsr32 rsrvd4[2]; /* 0x68-0x6F reserved */
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igcsr32 mro; /* 0x70 - memory request optimiser */
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igcsr32 rsrvd5[3]; /* 0x74-0x7F reserved */
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igcsr32 whami; /* 0x80 - who am I */
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igcsr32 pciarb; /* 0x84 - PCI arbitration control */
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igcsr32 pcicfg; /* 0x88 - PCI config status */
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igcsr32 rsrvd6[4]; /* 0x8C-0x9B reserved */
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igcsr32 pci_mem; /* 0x9C - PCI top of memory,
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761 only */
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/* AGP (bus 1) control registers */
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igcsr32 agpcap; /* 0xA0 - AGP Capability Identifier */
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igcsr32 agpstat; /* 0xA4 - AGP status register */
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igcsr32 agpcmd; /* 0xA8 - AGP control register */
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igcsr32 agpva; /* 0xAC - AGP Virtual Address Space */
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igcsr32 agpmode; /* 0xB0 - AGP/GART mode control */
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} Irongate0;
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typedef struct {
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igcsr32 dev_vendor; /* 0x00 - Device and Vendor IDs */
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igcsr32 stat_cmd; /* 0x04 - Status and Command regs */
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igcsr32 class; /* 0x08 - subclass, baseclass etc */
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igcsr32 htype; /* 0x0C - header type (at 0x0E) */
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igcsr32 rsrvd0[2]; /* 0x10-0x17 reserved */
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igcsr32 busnos; /* 0x18 - Primary, secondary bus nos */
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igcsr32 io_baselim_regs; /* 0x1C - IO base, IO lim, AGP status */
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igcsr32 mem_baselim; /* 0x20 - memory base, memory lim */
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igcsr32 pfmem_baselim; /* 0x24 - prefetchable base, lim */
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igcsr32 rsrvd1[2]; /* 0x28-0x2F reserved */
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igcsr32 io_baselim; /* 0x30 - IO base, IO limit */
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igcsr32 rsrvd2[2]; /* 0x34-0x3B - reserved */
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igcsr32 interrupt; /* 0x3C - interrupt, PCI bridge ctrl */
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} Irongate1;
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extern igcsr32 *IronECC;
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/*
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* Memory spaces:
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*/
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/* Irongate is consistent with a subset of the Tsunami memory map */
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#ifdef USE_48_BIT_KSEG
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#define IRONGATE_BIAS 0x80000000000UL
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#else
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#define IRONGATE_BIAS 0x10000000000UL
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#endif
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#define IRONGATE_MEM (IDENT_ADDR | IRONGATE_BIAS | 0x000000000UL)
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#define IRONGATE_IACK_SC (IDENT_ADDR | IRONGATE_BIAS | 0x1F8000000UL)
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#define IRONGATE_IO (IDENT_ADDR | IRONGATE_BIAS | 0x1FC000000UL)
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#define IRONGATE_CONF (IDENT_ADDR | IRONGATE_BIAS | 0x1FE000000UL)
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/*
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* PCI Configuration space accesses are formed like so:
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*
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* 0x1FE << 24 | : 2 2 2 2 1 1 1 1 : 1 1 1 1 1 1 0 0 : 0 0 0 0 0 0 0 0 :
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* : 3 2 1 0 9 8 7 6 : 5 4 3 2 1 0 9 8 : 7 6 5 4 3 2 1 0 :
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* ---bus numer--- -device-- -fun- ---register----
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*/
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#define IGCSR(dev,fun,reg) ( IRONGATE_CONF | \
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((dev)<<11) | \
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((fun)<<8) | \
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(reg) )
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#define IRONGATE0 ((Irongate0 *) IGCSR(0, 0, 0))
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#define IRONGATE1 ((Irongate1 *) IGCSR(1, 0, 0))
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/*
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* Data structure for handling IRONGATE machine checks:
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* This is the standard OSF logout frame
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*/
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#define SCB_Q_SYSERR 0x620 /* OSF definitions */
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#define SCB_Q_PROCERR 0x630
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#define SCB_Q_SYSMCHK 0x660
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#define SCB_Q_PROCMCHK 0x670
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struct el_IRONGATE_sysdata_mcheck {
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__u32 FrameSize; /* Bytes, including this field */
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__u32 FrameFlags; /* <31> = Retry, <30> = Second Error */
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__u32 CpuOffset; /* Offset to CPU-specific into */
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__u32 SystemOffset; /* Offset to system-specific info */
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__u32 MCHK_Code;
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__u32 MCHK_Frame_Rev;
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__u64 I_STAT;
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__u64 DC_STAT;
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__u64 C_ADDR;
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__u64 DC1_SYNDROME;
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__u64 DC0_SYNDROME;
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__u64 C_STAT;
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__u64 C_STS;
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__u64 RESERVED0;
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__u64 EXC_ADDR;
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__u64 IER_CM;
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__u64 ISUM;
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__u64 MM_STAT;
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__u64 PAL_BASE;
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__u64 I_CTL;
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__u64 PCTX;
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};
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#ifdef __KERNEL__
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#ifndef __EXTERN_INLINE
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#define __EXTERN_INLINE extern inline
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#define __IO_EXTERN_INLINE
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#endif
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/*
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* I/O functions:
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*
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* IRONGATE (AMD-751) PCI/memory support chip for the EV6 (21264) and
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* K7 can only use linear accesses to get at PCI memory and I/O spaces.
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*/
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/*
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* Memory functions. All accesses are done through linear space.
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*/
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__EXTERN_INLINE void __iomem *irongate_ioportmap(unsigned long addr)
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{
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return (void __iomem *)(addr + IRONGATE_IO);
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}
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extern void __iomem *irongate_ioremap(unsigned long addr, unsigned long size);
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extern void irongate_iounmap(volatile void __iomem *addr);
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__EXTERN_INLINE int irongate_is_ioaddr(unsigned long addr)
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{
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return addr >= IRONGATE_MEM;
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}
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__EXTERN_INLINE int irongate_is_mmio(const volatile void __iomem *xaddr)
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{
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unsigned long addr = (unsigned long)xaddr;
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return addr < IRONGATE_IO || addr >= IRONGATE_CONF;
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}
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#undef __IO_PREFIX
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#define __IO_PREFIX irongate
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#define irongate_trivial_rw_bw 1
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#define irongate_trivial_rw_lq 1
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#define irongate_trivial_io_bw 1
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#define irongate_trivial_io_lq 1
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#define irongate_trivial_iounmap 0
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#include <asm/io_trivial.h>
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#ifdef __IO_EXTERN_INLINE
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#undef __EXTERN_INLINE
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#undef __IO_EXTERN_INLINE
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#endif
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#endif /* __KERNEL__ */
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#endif /* __ALPHA_IRONGATE__H__ */
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