/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ALPHA_IRONGATE__H__
#define __ALPHA_IRONGATE__H__
#include <linux/types.h>
#include <asm/compiler.h>
/*
* IRONGATE is the internal name for the AMD-751 K7 core logic chipset
* which provides memory controller and PCI access for NAUTILUS-based
* EV6 (21264) systems.
*
* This file is based on:
*
* IronGate management library, (c) 1999 Alpha Processor, Inc.
* Copyright (C) 1999 Alpha Processor, Inc.,
* (David Daniel, Stig Telfer, Soohoon Lee)
*/
/*
* The 21264 supports, and internally recognizes, a 44-bit physical
* address space that is divided equally between memory address space
* and I/O address space. Memory address space resides in the lower
* half of the physical address space (PA[43]=0) and I/O address space
* resides in the upper half of the physical address space (PA[43]=1).
*/
/*
* Irongate CSR map. Some of the CSRs are 8 or 16 bits, but all access
* through the routines given is 32-bit.
*
* The first 0x40 bytes are standard as per the PCI spec.
*/
typedef volatile __u32 igcsr32;
typedef struct {
igcsr32 dev_vendor; /* 0x00 - device ID, vendor ID */
igcsr32 stat_cmd; /* 0x04 - status, command */
igcsr32 class; /* 0x08 - class code, rev ID */
igcsr32 latency; /* 0x0C - header type, PCI latency */
igcsr32 bar0; /* 0x10 - BAR0 - AGP */
igcsr32 bar1; /* 0x14 - BAR1 - GART */
igcsr32 bar2; /* 0x18 - Power Management reg block */
igcsr32 rsrvd0[6]; /* 0x1C-0x33 reserved */
igcsr32 capptr; /* 0x34 - Capabilities pointer */
igcsr32 rsrvd1[2]; /* 0x38-0x3F reserved */
igcsr32 bacsr10; /* 0x40 - base address chip selects */
igcsr32 bacsr32; /* 0x44 - base address chip selects */
igcsr32 bacsr54_eccms761; /* 0x48 - 751: base addr. chip selects
761: ECC, mode/status */
igcsr32 rsrvd2[1]; /* 0x4C-0x4F reserved */
igcsr32 drammap; /* 0x50 - address mapping control */
igcsr32 dramtm; /* 0x54 - timing, driver strength */
igcsr32 dramms; /* 0x58 - DRAM mode/status */
igcsr32 rsrvd3[1]; /* 0x5C-0x5F reserved */
igcsr32 biu0; /* 0x60 - bus interface unit */
igcsr32 biusip; /* 0x64 - Serial initialisation pkt */
igcsr32 rsrvd4[2]; /* 0x68-0x6F reserved */
igcsr32 mro; /* 0x70 - memory request optimiser */
igcsr32 rsrvd5[3]; /* 0x74-0x7F reserved */
igcsr32 whami; /* 0x80 - who am I */
igcsr32 pciarb; /* 0x84 - PCI arbitration control */
igcsr32 pcicfg; /* 0x88 - PCI config status */
igcsr32 rsrvd6[4]; /* 0x8C-0x9B reserved */
igcsr32 pci_mem; /* 0x9C - PCI top of memory,
761 only */
/* AGP (bus 1) control registers */
igcsr32 agpcap; /* 0xA0 - AGP Capability Identifier */
igcsr32 agpstat; /* 0xA4 - AGP status register */
igcsr32 agpcmd; /* 0xA8 - AGP control register */
igcsr32 agpva; /* 0xAC - AGP Virtual Address Space */
igcsr32 agpmode; /* 0xB0 - AGP/GART mode control */
} Irongate0;
typedef struct {
igcsr32 dev_vendor; /* 0x00 - Device and Vendor IDs */
igcsr32 stat_cmd; /* 0x04 - Status and Command regs */
igcsr32 class; /* 0x08 - subclass, baseclass etc */
igcsr32 htype; /* 0x0C - header type (at 0x0E) */
igcsr32 rsrvd0[2]; /* 0x10-0x17 reserved */
igcsr32 busnos; /* 0x18 - Primary, secondary bus nos */
igcsr32 io_baselim_regs; /* 0x1C - IO base, IO lim, AGP status */
igcsr32 mem_baselim; /* 0x20 - memory base, memory lim */
igcsr32 pfmem_baselim; /* 0x24 - prefetchable base, lim */
igcsr32 rsrvd1[2]; /* 0x28-0x2F reserved */
igcsr32 io_baselim; /* 0x30 - IO base, IO limit */
igcsr32 rsrvd2[2]; /* 0x34-0x3B - reserved */
igcsr32 interrupt; /* 0x3C - interrupt, PCI bridge ctrl */
} Irongate1;
extern igcsr32 *IronECC;
/*
* Memory spaces:
*/
/* Irongate is consistent with a subset of the Tsunami memory map */
#ifdef USE_48_BIT_KSEG
#define IRONGATE_BIAS 0x80000000000UL
#else
#define IRONGATE_BIAS 0x10000000000UL
#endif
#define IRONGATE_MEM (IDENT_ADDR | IRONGATE_BIAS | 0x000000000UL)
#define IRONGATE_IACK_SC (IDENT_ADDR | IRONGATE_BIAS | 0x1F8000000UL)
#define IRONGATE_IO (IDENT_ADDR | IRONGATE_BIAS | 0x1FC000000UL)
#define IRONGATE_CONF (IDENT_ADDR | IRONGATE_BIAS | 0x1FE000000UL)
/*
* PCI Configuration space accesses are formed like so:
*
* 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 :
* : 3 2 1 0 9 8 7 6 : 5 4 3 2 1 0 9 8 : 7 6 5 4 3 2 1 0 :
* ---bus numer--- -device-- -fun- ---register----
*/
#define IGCSR(dev,fun,reg) ( IRONGATE_CONF | \
((dev)<<11) | \
((fun)<<8) | \
(reg) )
#define IRONGATE0 ((Irongate0 *) IGCSR(0, 0, 0))
#define IRONGATE1 ((Irongate1 *) IGCSR(1, 0, 0))
/*
* Data structure for handling IRONGATE machine checks:
* This is the standard OSF logout frame
*/
#define SCB_Q_SYSERR 0x620 /* OSF definitions */
#define SCB_Q_PROCERR 0x630
#define SCB_Q_SYSMCHK 0x660
#define SCB_Q_PROCMCHK 0x670
struct el_IRONGATE_sysdata_mcheck {
__u32 FrameSize; /* Bytes, including this field */
__u32 FrameFlags; /* <31> = Retry, <30> = Second Error */
__u32 CpuOffset; /* Offset to CPU-specific into */
__u32 SystemOffset; /* Offset to system-specific info */
__u32 MCHK_Code;
__u32 MCHK_Frame_Rev;
__u64 I_STAT;
__u64 DC_STAT;
__u64 C_ADDR;
__u64 DC1_SYNDROME;
__u64 DC0_SYNDROME;
__u64 C_STAT;
__u64 C_STS;
__u64 RESERVED0;
__u64 EXC_ADDR;
__u64 IER_CM;
__u64 ISUM;
__u64 MM_STAT;
__u64 PAL_BASE;
__u64 I_CTL;
__u64 PCTX;
};
#ifdef __KERNEL__
#ifndef __EXTERN_INLINE
#define __EXTERN_INLINE extern inline
#define __IO_EXTERN_INLINE
#endif
/*
* I/O functions:
*
* IRONGATE (AMD-751) PCI/memory support chip for the EV6 (21264) and
* K7 can only use linear accesses to get at PCI memory and I/O spaces.
*/
/*
* Memory functions. All accesses are done through linear space.
*/
__EXTERN_INLINE void __iomem *irongate_ioportmap(unsigned long addr)
{
return (void __iomem *)(addr + IRONGATE_IO);
}
extern void __iomem *irongate_ioremap(unsigned long addr, unsigned long size);
extern void irongate_iounmap(volatile void __iomem *addr);
__EXTERN_INLINE int irongate_is_ioaddr(unsigned long addr)
{
return addr >= IRONGATE_MEM;
}
__EXTERN_INLINE int irongate_is_mmio(const volatile void __iomem *xaddr)
{
unsigned long addr = (unsigned long)xaddr;
return addr < IRONGATE_IO || addr >= IRONGATE_CONF;
}
#undef __IO_PREFIX
#define __IO_PREFIX irongate
#define irongate_trivial_rw_bw 1
#define irongate_trivial_rw_lq 1
#define irongate_trivial_io_bw 1
#define irongate_trivial_io_lq 1
#define irongate_trivial_iounmap 0
#include <asm/io_trivial.h>
#ifdef __IO_EXTERN_INLINE
#undef __EXTERN_INLINE
#undef __IO_EXTERN_INLINE
#endif
#endif /* __KERNEL__ */
#endif /* __ALPHA_IRONGATE__H__ */