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linux/include/asm-alpha/core_tsunami.h
Jay Estabrook 025a22151c ALPHA: support graphics on non-zero PCI domains 
This code replaces earlier and incomplete handling of graphics on non-zero PCI
domains (aka hoses or peer PCI buses).

An option (CONFIG_VGA_HOSE) is set TRUE if configuring a GENERIC kernel, or a
kernel for MARVEL, TITAN, or TSUNAMI machines, as these are the machines whose
SRM consoles are capable of configuring and handling graphics options on
non-zero hoses.  All other machines have the option set FALSE.

A routine, "find_console_vga_hose()", is used to find the graphics device
which the machine's firmware believes is the console device, and it sets a
global (pci_vga_hose) for later use in managing access to the device.  This is
called in "init_arch" on TITAN and TSUNAMI machines; MARVEL machines use a
custom version of this routine because of extra complexity.

A routine, "locate_and_init_vga()", is used to find the graphics device and
set a global (pci_vga_hose) for later use in managing access to the device, in
the case where "find_console_vga_hose" has failed.

Various adjustments are made to the ioremap and ioportmap routines for
detecting and translating "legacy" VGA register and memory references to the
real PCI domain.

[akpm@linux-foundation.org: don't statically init bss]
[akpm@linux-foundation.org: build fix]
Signed-off-by: Jay Estabrook <jay.estabrook@hp.com>
Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-01 08:18:29 -07:00

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#ifndef __ALPHA_TSUNAMI__H__
#define __ALPHA_TSUNAMI__H__
#include <linux/types.h>
#include <linux/pci.h>
#include <asm/compiler.h>
/*
* TSUNAMI/TYPHOON are the internal names for the core logic chipset which
* provides memory controller and PCI access for the 21264 based systems.
*
* This file is based on:
*
* Tsunami System Programmers Manual
* Preliminary, Chapters 2-5
*
*/
/* XXX: Do we need to conditionalize on this? */
#ifdef USE_48_BIT_KSEG
#define TS_BIAS 0x80000000000UL
#else
#define TS_BIAS 0x10000000000UL
#endif
/*
* CChip, DChip, and PChip registers
*/
typedef struct {
volatile unsigned long csr __attribute__((aligned(64)));
} tsunami_64;
typedef struct {
tsunami_64 csc;
tsunami_64 mtr;
tsunami_64 misc;
tsunami_64 mpd;
tsunami_64 aar0;
tsunami_64 aar1;
tsunami_64 aar2;
tsunami_64 aar3;
tsunami_64 dim0;
tsunami_64 dim1;
tsunami_64 dir0;
tsunami_64 dir1;
tsunami_64 drir;
tsunami_64 prben;
tsunami_64 iic; /* a.k.a. iic0 */
tsunami_64 wdr; /* a.k.a. iic1 */
tsunami_64 mpr0;
tsunami_64 mpr1;
tsunami_64 mpr2;
tsunami_64 mpr3;
tsunami_64 mctl;
tsunami_64 __pad1;
tsunami_64 ttr;
tsunami_64 tdr;
tsunami_64 dim2;
tsunami_64 dim3;
tsunami_64 dir2;
tsunami_64 dir3;
tsunami_64 iic2;
tsunami_64 iic3;
} tsunami_cchip;
typedef struct {
tsunami_64 dsc;
tsunami_64 str;
tsunami_64 drev;
} tsunami_dchip;
typedef struct {
tsunami_64 wsba[4];
tsunami_64 wsm[4];
tsunami_64 tba[4];
tsunami_64 pctl;
tsunami_64 plat;
tsunami_64 reserved;
tsunami_64 perror;
tsunami_64 perrmask;
tsunami_64 perrset;
tsunami_64 tlbiv;
tsunami_64 tlbia;
tsunami_64 pmonctl;
tsunami_64 pmoncnt;
} tsunami_pchip;
#define TSUNAMI_cchip ((tsunami_cchip *)(IDENT_ADDR+TS_BIAS+0x1A0000000UL))
#define TSUNAMI_dchip ((tsunami_dchip *)(IDENT_ADDR+TS_BIAS+0x1B0000800UL))
#define TSUNAMI_pchip0 ((tsunami_pchip *)(IDENT_ADDR+TS_BIAS+0x180000000UL))
#define TSUNAMI_pchip1 ((tsunami_pchip *)(IDENT_ADDR+TS_BIAS+0x380000000UL))
extern int TSUNAMI_bootcpu;
/*
* TSUNAMI Pchip Error register.
*/
#define perror_m_lost 0x1
#define perror_m_serr 0x2
#define perror_m_perr 0x4
#define perror_m_dcrto 0x8
#define perror_m_sge 0x10
#define perror_m_ape 0x20
#define perror_m_ta 0x40
#define perror_m_rdpe 0x80
#define perror_m_nds 0x100
#define perror_m_rto 0x200
#define perror_m_uecc 0x400
#define perror_m_cre 0x800
#define perror_m_addrl 0xFFFFFFFF0000UL
#define perror_m_addrh 0x7000000000000UL
#define perror_m_cmd 0xF0000000000000UL
#define perror_m_syn 0xFF00000000000000UL
union TPchipPERROR {
struct {
unsigned int perror_v_lost : 1;
unsigned perror_v_serr : 1;
unsigned perror_v_perr : 1;
unsigned perror_v_dcrto : 1;
unsigned perror_v_sge : 1;
unsigned perror_v_ape : 1;
unsigned perror_v_ta : 1;
unsigned perror_v_rdpe : 1;
unsigned perror_v_nds : 1;
unsigned perror_v_rto : 1;
unsigned perror_v_uecc : 1;
unsigned perror_v_cre : 1;
unsigned perror_v_rsvd1 : 4;
unsigned perror_v_addrl : 32;
unsigned perror_v_addrh : 3;
unsigned perror_v_rsvd2 : 1;
unsigned perror_v_cmd : 4;
unsigned perror_v_syn : 8;
} perror_r_bits;
int perror_q_whole [2];
};
/*
* TSUNAMI Pchip Window Space Base Address register.
*/
#define wsba_m_ena 0x1
#define wsba_m_sg 0x2
#define wsba_m_ptp 0x4
#define wsba_m_addr 0xFFF00000
#define wmask_k_sz1gb 0x3FF00000
union TPchipWSBA {
struct {
unsigned wsba_v_ena : 1;
unsigned wsba_v_sg : 1;
unsigned wsba_v_ptp : 1;
unsigned wsba_v_rsvd1 : 17;
unsigned wsba_v_addr : 12;
unsigned wsba_v_rsvd2 : 32;
} wsba_r_bits;
int wsba_q_whole [2];
};
/*
* TSUNAMI Pchip Control Register
*/
#define pctl_m_fdsc 0x1
#define pctl_m_fbtb 0x2
#define pctl_m_thdis 0x4
#define pctl_m_chaindis 0x8
#define pctl_m_tgtlat 0x10
#define pctl_m_hole 0x20
#define pctl_m_mwin 0x40
#define pctl_m_arbena 0x80
#define pctl_m_prigrp 0x7F00
#define pctl_m_ppri 0x8000
#define pctl_m_rsvd1 0x30000
#define pctl_m_eccen 0x40000
#define pctl_m_padm 0x80000
#define pctl_m_cdqmax 0xF00000
#define pctl_m_rev 0xFF000000
#define pctl_m_crqmax 0xF00000000UL
#define pctl_m_ptpmax 0xF000000000UL
#define pctl_m_pclkx 0x30000000000UL
#define pctl_m_fdsdis 0x40000000000UL
#define pctl_m_fdwdis 0x80000000000UL
#define pctl_m_ptevrfy 0x100000000000UL
#define pctl_m_rpp 0x200000000000UL
#define pctl_m_pid 0xC00000000000UL
#define pctl_m_rsvd2 0xFFFF000000000000UL
union TPchipPCTL {
struct {
unsigned pctl_v_fdsc : 1;
unsigned pctl_v_fbtb : 1;
unsigned pctl_v_thdis : 1;
unsigned pctl_v_chaindis : 1;
unsigned pctl_v_tgtlat : 1;
unsigned pctl_v_hole : 1;
unsigned pctl_v_mwin : 1;
unsigned pctl_v_arbena : 1;
unsigned pctl_v_prigrp : 7;
unsigned pctl_v_ppri : 1;
unsigned pctl_v_rsvd1 : 2;
unsigned pctl_v_eccen : 1;
unsigned pctl_v_padm : 1;
unsigned pctl_v_cdqmax : 4;
unsigned pctl_v_rev : 8;
unsigned pctl_v_crqmax : 4;
unsigned pctl_v_ptpmax : 4;
unsigned pctl_v_pclkx : 2;
unsigned pctl_v_fdsdis : 1;
unsigned pctl_v_fdwdis : 1;
unsigned pctl_v_ptevrfy : 1;
unsigned pctl_v_rpp : 1;
unsigned pctl_v_pid : 2;
unsigned pctl_v_rsvd2 : 16;
} pctl_r_bits;
int pctl_q_whole [2];
};
/*
* TSUNAMI Pchip Error Mask Register.
*/
#define perrmask_m_lost 0x1
#define perrmask_m_serr 0x2
#define perrmask_m_perr 0x4
#define perrmask_m_dcrto 0x8
#define perrmask_m_sge 0x10
#define perrmask_m_ape 0x20
#define perrmask_m_ta 0x40
#define perrmask_m_rdpe 0x80
#define perrmask_m_nds 0x100
#define perrmask_m_rto 0x200
#define perrmask_m_uecc 0x400
#define perrmask_m_cre 0x800
#define perrmask_m_rsvd 0xFFFFFFFFFFFFF000UL
union TPchipPERRMASK {
struct {
unsigned int perrmask_v_lost : 1;
unsigned perrmask_v_serr : 1;
unsigned perrmask_v_perr : 1;
unsigned perrmask_v_dcrto : 1;
unsigned perrmask_v_sge : 1;
unsigned perrmask_v_ape : 1;
unsigned perrmask_v_ta : 1;
unsigned perrmask_v_rdpe : 1;
unsigned perrmask_v_nds : 1;
unsigned perrmask_v_rto : 1;
unsigned perrmask_v_uecc : 1;
unsigned perrmask_v_cre : 1;
unsigned perrmask_v_rsvd1 : 20;
unsigned perrmask_v_rsvd2 : 32;
} perrmask_r_bits;
int perrmask_q_whole [2];
};
/*
* Memory spaces:
*/
#define TSUNAMI_HOSE(h) (((unsigned long)(h)) << 33)
#define TSUNAMI_BASE (IDENT_ADDR + TS_BIAS)
#define TSUNAMI_MEM(h) (TSUNAMI_BASE+TSUNAMI_HOSE(h) + 0x000000000UL)
#define _TSUNAMI_IACK_SC(h) (TSUNAMI_BASE+TSUNAMI_HOSE(h) + 0x1F8000000UL)
#define TSUNAMI_IO(h) (TSUNAMI_BASE+TSUNAMI_HOSE(h) + 0x1FC000000UL)
#define TSUNAMI_CONF(h) (TSUNAMI_BASE+TSUNAMI_HOSE(h) + 0x1FE000000UL)
#define TSUNAMI_IACK_SC _TSUNAMI_IACK_SC(0) /* hack! */
/*
* The canonical non-remaped I/O and MEM addresses have these values
* subtracted out. This is arranged so that folks manipulating ISA
* devices can use their familiar numbers and have them map to bus 0.
*/
#define TSUNAMI_IO_BIAS TSUNAMI_IO(0)
#define TSUNAMI_MEM_BIAS TSUNAMI_MEM(0)
/* The IO address space is larger than 0xffff */
#define TSUNAMI_IO_SPACE (TSUNAMI_CONF(0) - TSUNAMI_IO(0))
/* Offset between ram physical addresses and pci64 DAC bus addresses. */
#define TSUNAMI_DAC_OFFSET (1UL << 40)
/*
* Data structure for handling TSUNAMI machine checks:
*/
struct el_TSUNAMI_sysdata_mcheck {
};
#ifdef __KERNEL__
#ifndef __EXTERN_INLINE
#define __EXTERN_INLINE extern inline
#define __IO_EXTERN_INLINE
#endif
/*
* I/O functions:
*
* TSUNAMI, the 21??? PCI/memory support chipset for the EV6 (21264)
* can only use linear accesses to get at PCI memory and I/O spaces.
*/
/*
* Memory functions. all accesses are done through linear space.
*/
extern void __iomem *tsunami_ioportmap(unsigned long addr);
extern void __iomem *tsunami_ioremap(unsigned long addr, unsigned long size);
__EXTERN_INLINE int tsunami_is_ioaddr(unsigned long addr)
{
return addr >= TSUNAMI_BASE;
}
__EXTERN_INLINE int tsunami_is_mmio(const volatile void __iomem *xaddr)
{
unsigned long addr = (unsigned long) xaddr;
return (addr & 0x100000000UL) == 0;
}
#undef __IO_PREFIX
#define __IO_PREFIX tsunami
#define tsunami_trivial_rw_bw 1
#define tsunami_trivial_rw_lq 1
#define tsunami_trivial_io_bw 1
#define tsunami_trivial_io_lq 1
#define tsunami_trivial_iounmap 1
#include <asm/io_trivial.h>
#ifdef __IO_EXTERN_INLINE
#undef __EXTERN_INLINE
#undef __IO_EXTERN_INLINE
#endif
#endif /* __KERNEL__ */
#endif /* __ALPHA_TSUNAMI__H__ */
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