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linux/include/asm-alpha/core_titan.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_TITAN__H__
#define __ALPHA_TITAN__H__
#include <linux/types.h>
#include <linux/pci.h>
#include <asm/compiler.h>
/*
* TITAN is the internal names for a core logic chipset which provides
* memory controller and PCI/AGP access for 21264 based systems.
*
* This file is based on:
*
* Titan Chipset Engineering Specification
* Revision 0.12
* 13 July 1999
*
*/
/* XXX: Do we need to conditionalize on this? */
#ifdef USE_48_BIT_KSEG
#define TI_BIAS 0x80000000000UL
#else
#define TI_BIAS 0x10000000000UL
#endif
/*
* CChip, DChip, and PChip registers
*/
typedef struct {
volatile unsigned long csr __attribute__((aligned(64)));
} titan_64;
typedef struct {
titan_64 csc;
titan_64 mtr;
titan_64 misc;
titan_64 mpd;
titan_64 aar0;
titan_64 aar1;
titan_64 aar2;
titan_64 aar3;
titan_64 dim0;
titan_64 dim1;
titan_64 dir0;
titan_64 dir1;
titan_64 drir;
titan_64 prben;
titan_64 iic0;
titan_64 iic1;
titan_64 mpr0;
titan_64 mpr1;
titan_64 mpr2;
titan_64 mpr3;
titan_64 rsvd[2];
titan_64 ttr;
titan_64 tdr;
titan_64 dim2;
titan_64 dim3;
titan_64 dir2;
titan_64 dir3;
titan_64 iic2;
titan_64 iic3;
titan_64 pwr;
titan_64 reserved[17];
titan_64 cmonctla;
titan_64 cmonctlb;
titan_64 cmoncnt01;
titan_64 cmoncnt23;
titan_64 cpen;
} titan_cchip;
typedef struct {
titan_64 dsc;
titan_64 str;
titan_64 drev;
titan_64 dsc2;
} titan_dchip;
typedef struct {
titan_64 wsba[4];
titan_64 wsm[4];
titan_64 tba[4];
titan_64 pctl;
titan_64 plat;
titan_64 reserved0[2];
union {
struct {
titan_64 serror;
titan_64 serren;
titan_64 serrset;
titan_64 reserved0;
titan_64 gperror;
titan_64 gperren;
titan_64 gperrset;
titan_64 reserved1;
titan_64 gtlbiv;
titan_64 gtlbia;
titan_64 reserved2[2];
titan_64 sctl;
titan_64 reserved3[3];
} g;
struct {
titan_64 agperror;
titan_64 agperren;
titan_64 agperrset;
titan_64 agplastwr;
titan_64 aperror;
titan_64 aperren;
titan_64 aperrset;
titan_64 reserved0;
titan_64 atlbiv;
titan_64 atlbia;
titan_64 reserved1[6];
} a;
} port_specific;
titan_64 sprst;
titan_64 reserved1[31];
} titan_pachip_port;
typedef struct {
titan_pachip_port g_port;
titan_pachip_port a_port;
} titan_pachip;
#define TITAN_cchip ((titan_cchip *)(IDENT_ADDR+TI_BIAS+0x1A0000000UL))
#define TITAN_dchip ((titan_dchip *)(IDENT_ADDR+TI_BIAS+0x1B0000800UL))
#define TITAN_pachip0 ((titan_pachip *)(IDENT_ADDR+TI_BIAS+0x180000000UL))
#define TITAN_pachip1 ((titan_pachip *)(IDENT_ADDR+TI_BIAS+0x380000000UL))
extern unsigned TITAN_agp;
extern int TITAN_bootcpu;
/*
* TITAN PA-chip Window Space Base Address register.
* (WSBA[0-2])
*/
#define wsba_m_ena 0x1
#define wsba_m_sg 0x2
#define wsba_m_addr 0xFFF00000
#define wmask_k_sz1gb 0x3FF00000
union TPAchipWSBA {
struct {
unsigned wsba_v_ena : 1;
unsigned wsba_v_sg : 1;
unsigned wsba_v_rsvd1 : 18;
unsigned wsba_v_addr : 12;
unsigned wsba_v_rsvd2 : 32;
} wsba_r_bits;
int wsba_q_whole [2];
};
/*
* TITAN PA-chip Control Register
* This definition covers both the G-Port GPCTL and the A-PORT APCTL.
* Bits <51:0> are the same in both cases. APCTL<63:52> are only
* applicable to AGP.
*/
#define pctl_m_fbtb 0x00000001
#define pctl_m_thdis 0x00000002
#define pctl_m_chaindis 0x00000004
#define pctl_m_tgtlat 0x00000018
#define pctl_m_hole 0x00000020
#define pctl_m_mwin 0x00000040
#define pctl_m_arbena 0x00000080
#define pctl_m_prigrp 0x0000FF00
#define pctl_m_ppri 0x00010000
#define pctl_m_pcispd66 0x00020000
#define pctl_m_cngstlt 0x003C0000
#define pctl_m_ptpdesten 0x3FC00000
#define pctl_m_dpcen 0x40000000
#define pctl_m_apcen 0x0000000080000000UL
#define pctl_m_dcrtv 0x0000000300000000UL
#define pctl_m_en_stepping 0x0000000400000000UL
#define apctl_m_rsvd1 0x000FFFF800000000UL
#define apctl_m_agp_rate 0x0030000000000000UL
#define apctl_m_agp_sba_en 0x0040000000000000UL
#define apctl_m_agp_en 0x0080000000000000UL
#define apctl_m_rsvd2 0x0100000000000000UL
#define apctl_m_agp_present 0x0200000000000000UL
#define apctl_agp_hp_rd 0x1C00000000000000UL
#define apctl_agp_lp_rd 0xE000000000000000UL
#define gpctl_m_rsvd 0xFFFFFFF800000000UL
union TPAchipPCTL {
struct {
unsigned pctl_v_fbtb : 1; /* A/G [0] */
unsigned pctl_v_thdis : 1; /* A/G [1] */
unsigned pctl_v_chaindis : 1; /* A/G [2] */
unsigned pctl_v_tgtlat : 2; /* A/G [4:3] */
unsigned pctl_v_hole : 1; /* A/G [5] */
unsigned pctl_v_mwin : 1; /* A/G [6] */
unsigned pctl_v_arbena : 1; /* A/G [7] */
unsigned pctl_v_prigrp : 8; /* A/G [15:8] */
unsigned pctl_v_ppri : 1; /* A/G [16] */
unsigned pctl_v_pcispd66 : 1; /* A/G [17] */
unsigned pctl_v_cngstlt : 4; /* A/G [21:18] */
unsigned pctl_v_ptpdesten : 8; /* A/G [29:22] */
unsigned pctl_v_dpcen : 1; /* A/G [30] */
unsigned pctl_v_apcen : 1; /* A/G [31] */
unsigned pctl_v_dcrtv : 2; /* A/G [33:32] */
unsigned pctl_v_en_stepping :1; /* A/G [34] */
unsigned apctl_v_rsvd1 : 17; /* A [51:35] */
unsigned apctl_v_agp_rate : 2; /* A [53:52] */
unsigned apctl_v_agp_sba_en : 1; /* A [54] */
unsigned apctl_v_agp_en : 1; /* A [55] */
unsigned apctl_v_rsvd2 : 1; /* A [56] */
unsigned apctl_v_agp_present : 1; /* A [57] */
unsigned apctl_v_agp_hp_rd : 3; /* A [60:58] */
unsigned apctl_v_agp_lp_rd : 3; /* A [63:61] */
} pctl_r_bits;
unsigned int pctl_l_whole [2];
unsigned long pctl_q_whole;
};
/*
* SERROR / SERREN / SERRSET
*/
union TPAchipSERR {
struct {
unsigned serr_v_lost_uecc : 1; /* [0] */
unsigned serr_v_uecc : 1; /* [1] */
unsigned serr_v_cre : 1; /* [2] */
unsigned serr_v_nxio : 1; /* [3] */
unsigned serr_v_lost_cre : 1; /* [4] */
unsigned serr_v_rsvd0 : 10; /* [14:5] */
unsigned serr_v_addr : 32; /* [46:15] */
unsigned serr_v_rsvd1 : 5; /* [51:47] */
unsigned serr_v_source : 2; /* [53:52] */
unsigned serr_v_cmd : 2; /* [55:54] */
unsigned serr_v_syn : 8; /* [63:56] */
} serr_r_bits;
unsigned int serr_l_whole[2];
unsigned long serr_q_whole;
};
/*
* GPERROR / APERROR / GPERREN / APERREN / GPERRSET / APERRSET
*/
union TPAchipPERR {
struct {
unsigned long perr_v_lost : 1; /* [0] */
unsigned long perr_v_serr : 1; /* [1] */
unsigned long perr_v_perr : 1; /* [2] */
unsigned long perr_v_dcrto : 1; /* [3] */
unsigned long perr_v_sge : 1; /* [4] */
unsigned long perr_v_ape : 1; /* [5] */
unsigned long perr_v_ta : 1; /* [6] */
unsigned long perr_v_dpe : 1; /* [7] */
unsigned long perr_v_nds : 1; /* [8] */
unsigned long perr_v_iptpr : 1; /* [9] */
unsigned long perr_v_iptpw : 1; /* [10] */
unsigned long perr_v_rsvd0 : 3; /* [13:11] */
unsigned long perr_v_addr : 33; /* [46:14] */
unsigned long perr_v_dac : 1; /* [47] */
unsigned long perr_v_mwin : 1; /* [48] */
unsigned long perr_v_rsvd1 : 3; /* [51:49] */
unsigned long perr_v_cmd : 4; /* [55:52] */
unsigned long perr_v_rsvd2 : 8; /* [63:56] */
} perr_r_bits;
unsigned int perr_l_whole[2];
unsigned long perr_q_whole;
};
/*
* AGPERROR / AGPERREN / AGPERRSET
*/
union TPAchipAGPERR {
struct {
unsigned agperr_v_lost : 1; /* [0] */
unsigned agperr_v_lpqfull : 1; /* [1] */
unsigned apgerr_v_hpqfull : 1; /* [2] */
unsigned agperr_v_rescmd : 1; /* [3] */
unsigned agperr_v_ipte : 1; /* [4] */
unsigned agperr_v_ptp : 1; /* [5] */
unsigned agperr_v_nowindow : 1; /* [6] */
unsigned agperr_v_rsvd0 : 8; /* [14:7] */
unsigned agperr_v_addr : 32; /* [46:15] */
unsigned agperr_v_rsvd1 : 1; /* [47] */
unsigned agperr_v_dac : 1; /* [48] */
unsigned agperr_v_mwin : 1; /* [49] */
unsigned agperr_v_cmd : 3; /* [52:50] */
unsigned agperr_v_length : 6; /* [58:53] */
unsigned agperr_v_fence : 1; /* [59] */
unsigned agperr_v_rsvd2 : 4; /* [63:60] */
} agperr_r_bits;
unsigned int agperr_l_whole[2];
unsigned long agperr_q_whole;
};
/*
* Memory spaces:
* Hose numbers are assigned as follows:
* 0 - pachip 0 / G Port
* 1 - pachip 1 / G Port
* 2 - pachip 0 / A Port
* 3 - pachip 1 / A Port
*/
#define TITAN_HOSE_SHIFT (33)
#define TITAN_HOSE(h) (((unsigned long)(h)) << TITAN_HOSE_SHIFT)
#define TITAN_BASE (IDENT_ADDR + TI_BIAS)
#define TITAN_MEM(h) (TITAN_BASE+TITAN_HOSE(h)+0x000000000UL)
#define _TITAN_IACK_SC(h) (TITAN_BASE+TITAN_HOSE(h)+0x1F8000000UL)
#define TITAN_IO(h) (TITAN_BASE+TITAN_HOSE(h)+0x1FC000000UL)
#define TITAN_CONF(h) (TITAN_BASE+TITAN_HOSE(h)+0x1FE000000UL)
#define TITAN_HOSE_MASK TITAN_HOSE(3)
#define TITAN_IACK_SC _TITAN_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 TITAN_IO_BIAS TITAN_IO(0)
#define TITAN_MEM_BIAS TITAN_MEM(0)
/* The IO address space is larger than 0xffff */
#define TITAN_IO_SPACE (TITAN_CONF(0) - TITAN_IO(0))
/* TIG Space */
#define TITAN_TIG_SPACE (TITAN_BASE + 0x100000000UL)
/* Offset between ram physical addresses and pci64 DAC bus addresses. */
/* ??? Just a guess. Ought to confirm it hasn't been moved. */
#define TITAN_DAC_OFFSET (1UL << 40)
/*
* Data structure for handling TITAN machine checks:
*/
#define SCB_Q_SYSERR 0x620
#define SCB_Q_PROCERR 0x630
#define SCB_Q_SYSMCHK 0x660
#define SCB_Q_PROCMCHK 0x670
#define SCB_Q_SYSEVENT 0x680 /* environmental / system management */
struct el_TITAN_sysdata_mcheck {
u64 summary; /* 0x00 */
u64 c_dirx; /* 0x08 */
u64 c_misc; /* 0x10 */
u64 p0_serror; /* 0x18 */
u64 p0_gperror; /* 0x20 */
u64 p0_aperror; /* 0x28 */
u64 p0_agperror;/* 0x30 */
u64 p1_serror; /* 0x38 */
u64 p1_gperror; /* 0x40 */
u64 p1_aperror; /* 0x48 */
u64 p1_agperror;/* 0x50 */
};
/*
* System area for a privateer 680 environmental/system management mcheck
*/
struct el_PRIVATEER_envdata_mcheck {
u64 summary; /* 0x00 */
u64 c_dirx; /* 0x08 */
u64 smir; /* 0x10 */
u64 cpuir; /* 0x18 */
u64 psir; /* 0x20 */
u64 fault; /* 0x28 */
u64 sys_doors; /* 0x30 */
u64 temp_warn; /* 0x38 */
u64 fan_ctrl; /* 0x40 */
u64 code; /* 0x48 */
u64 reserved; /* 0x50 */
};
#ifdef __KERNEL__
#ifndef __EXTERN_INLINE
#define __EXTERN_INLINE extern inline
#define __IO_EXTERN_INLINE
#endif
/*
* I/O functions:
*
* TITAN, a 21??? PCI/memory support chipset for the EV6 (21264)
* can only use linear accesses to get at PCI/AGP memory and I/O spaces.
*/
/*
* Memory functions. all accesses are done through linear space.
*/
extern void __iomem *titan_ioportmap(unsigned long addr);
extern void __iomem *titan_ioremap(unsigned long addr, unsigned long size);
extern void titan_iounmap(volatile void __iomem *addr);
__EXTERN_INLINE int titan_is_ioaddr(unsigned long addr)
{
return addr >= TITAN_BASE;
}
extern int titan_is_mmio(const volatile void __iomem *addr);
#undef __IO_PREFIX
#define __IO_PREFIX titan
#define titan_trivial_rw_bw 1
#define titan_trivial_rw_lq 1
#define titan_trivial_io_bw 1
#define titan_trivial_io_lq 1
#define titan_trivial_iounmap 0
#include <asm/io_trivial.h>
#ifdef __IO_EXTERN_INLINE
#undef __EXTERN_INLINE
#undef __IO_EXTERN_INLINE
#endif
#endif /* __KERNEL__ */
#endif /* __ALPHA_TITAN__H__ */
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