| /* |
| * This file is subject to the terms and conditions of the GNU General Public |
| * License. See the file "COPYING" in the main directory of this archive |
| * for more details. |
| * |
| * mc.h: Definitions for SGI Memory Controller |
| * |
| * Copyright (C) 1996 David S. Miller |
| * Copyright (C) 1999 Ralf Baechle |
| * Copyright (C) 1999 Silicon Graphics, Inc. |
| */ |
| |
| #ifndef _SGI_MC_H |
| #define _SGI_MC_H |
| |
| struct sgimc_regs { |
| u32 _unused0; |
| volatile u32 cpuctrl0; /* CPU control register 0, readwrite */ |
| #define SGIMC_CCTRL0_REFS 0x0000000f /* REFS mask */ |
| #define SGIMC_CCTRL0_EREFRESH 0x00000010 /* Memory refresh enable */ |
| #define SGIMC_CCTRL0_EPERRGIO 0x00000020 /* GIO parity error enable */ |
| #define SGIMC_CCTRL0_EPERRMEM 0x00000040 /* Main mem parity error enable */ |
| #define SGIMC_CCTRL0_EPERRCPU 0x00000080 /* CPU bus parity error enable */ |
| #define SGIMC_CCTRL0_WDOG 0x00000100 /* Watchdog timer enable */ |
| #define SGIMC_CCTRL0_SYSINIT 0x00000200 /* System init bit */ |
| #define SGIMC_CCTRL0_GFXRESET 0x00000400 /* Graphics interface reset */ |
| #define SGIMC_CCTRL0_EISALOCK 0x00000800 /* Lock CPU from memory for EISA */ |
| #define SGIMC_CCTRL0_EPERRSCMD 0x00001000 /* SysCMD bus parity error enable */ |
| #define SGIMC_CCTRL0_IENAB 0x00002000 /* Allow interrupts from MC */ |
| #define SGIMC_CCTRL0_ESNOOP 0x00004000 /* Snooping I/O enable */ |
| #define SGIMC_CCTRL0_EPROMWR 0x00008000 /* Prom writes from cpu enable */ |
| #define SGIMC_CCTRL0_WRESETPMEM 0x00010000 /* Perform warm reset, preserves mem */ |
| #define SGIMC_CCTRL0_LENDIAN 0x00020000 /* Put MC in little-endian mode */ |
| #define SGIMC_CCTRL0_WRESETDMEM 0x00040000 /* Warm reset, destroys mem contents */ |
| #define SGIMC_CCTRL0_CMEMBADPAR 0x02000000 /* Generate bad perr from cpu to mem */ |
| #define SGIMC_CCTRL0_R4KNOCHKPARR 0x04000000 /* Don't chk parity on mem data reads */ |
| #define SGIMC_CCTRL0_GIOBTOB 0x08000000 /* Allow GIO back to back writes */ |
| u32 _unused1; |
| volatile u32 cpuctrl1; /* CPU control register 1, readwrite */ |
| #define SGIMC_CCTRL1_EGIOTIMEO 0x00000010 /* GIO bus timeout enable */ |
| #define SGIMC_CCTRL1_FIXEDEHPC 0x00001000 /* Fixed HPC endianness */ |
| #define SGIMC_CCTRL1_LITTLEHPC 0x00002000 /* Little endian HPC */ |
| #define SGIMC_CCTRL1_FIXEDEEXP0 0x00004000 /* Fixed EXP0 endianness */ |
| #define SGIMC_CCTRL1_LITTLEEXP0 0x00008000 /* Little endian EXP0 */ |
| #define SGIMC_CCTRL1_FIXEDEEXP1 0x00010000 /* Fixed EXP1 endianness */ |
| #define SGIMC_CCTRL1_LITTLEEXP1 0x00020000 /* Little endian EXP1 */ |
| |
| u32 _unused2; |
| volatile u32 watchdogt; /* Watchdog reg rdonly, write clears */ |
| |
| u32 _unused3; |
| volatile u32 systemid; /* MC system ID register, readonly */ |
| #define SGIMC_SYSID_MASKREV 0x0000000f /* Revision of MC controller */ |
| #define SGIMC_SYSID_EPRESENT 0x00000010 /* Indicates presence of EISA bus */ |
| |
| u32 _unused4[3]; |
| volatile u32 divider; /* Divider reg for RPSS */ |
| |
| u32 _unused5; |
| volatile u32 eeprom; /* EEPROM byte reg for r4k */ |
| #define SGIMC_EEPROM_PRE 0x00000001 /* eeprom chip PRE pin assertion */ |
| #define SGIMC_EEPROM_CSEL 0x00000002 /* Active high, eeprom chip select */ |
| #define SGIMC_EEPROM_SECLOCK 0x00000004 /* EEPROM serial clock */ |
| #define SGIMC_EEPROM_SDATAO 0x00000008 /* Serial EEPROM data-out */ |
| #define SGIMC_EEPROM_SDATAI 0x00000010 /* Serial EEPROM data-in */ |
| |
| u32 _unused6[3]; |
| volatile u32 rcntpre; /* Preload refresh counter */ |
| |
| u32 _unused7; |
| volatile u32 rcounter; /* Readonly refresh counter */ |
| |
| u32 _unused8[13]; |
| volatile u32 giopar; /* Parameter word for GIO64 */ |
| #define SGIMC_GIOPAR_HPC64 0x00000001 /* HPC talks to GIO using 64-bits */ |
| #define SGIMC_GIOPAR_GFX64 0x00000002 /* GFX talks to GIO using 64-bits */ |
| #define SGIMC_GIOPAR_EXP064 0x00000004 /* EXP(slot0) talks using 64-bits */ |
| #define SGIMC_GIOPAR_EXP164 0x00000008 /* EXP(slot1) talks using 64-bits */ |
| #define SGIMC_GIOPAR_EISA64 0x00000010 /* EISA bus talks 64-bits to GIO */ |
| #define SGIMC_GIOPAR_HPC264 0x00000020 /* 2nd HPX talks 64-bits to GIO */ |
| #define SGIMC_GIOPAR_RTIMEGFX 0x00000040 /* GFX device has realtime attr */ |
| #define SGIMC_GIOPAR_RTIMEEXP0 0x00000080 /* EXP(slot0) has realtime attr */ |
| #define SGIMC_GIOPAR_RTIMEEXP1 0x00000100 /* EXP(slot1) has realtime attr */ |
| #define SGIMC_GIOPAR_MASTEREISA 0x00000200 /* EISA bus can act as bus master */ |
| #define SGIMC_GIOPAR_ONEBUS 0x00000400 /* Exists one GIO64 pipelined bus */ |
| #define SGIMC_GIOPAR_MASTERGFX 0x00000800 /* GFX can act as a bus master */ |
| #define SGIMC_GIOPAR_MASTEREXP0 0x00001000 /* EXP(slot0) can bus master */ |
| #define SGIMC_GIOPAR_MASTEREXP1 0x00002000 /* EXP(slot1) can bus master */ |
| #define SGIMC_GIOPAR_PLINEEXP0 0x00004000 /* EXP(slot0) has pipeline attr */ |
| #define SGIMC_GIOPAR_PLINEEXP1 0x00008000 /* EXP(slot1) has pipeline attr */ |
| |
| u32 _unused9; |
| volatile u32 cputp; /* CPU bus arb time period */ |
| |
| u32 _unused10[3]; |
| volatile u32 lbursttp; /* Time period for long bursts */ |
| |
| /* MC chip can drive up to 4 bank 4 SIMMs each. All SIMMs in bank must |
| * be the same size. The size encoding for supported SIMMs is bellow */ |
| u32 _unused11[9]; |
| volatile u32 mconfig0; /* Memory config register zero */ |
| u32 _unused12; |
| volatile u32 mconfig1; /* Memory config register one */ |
| #define SGIMC_MCONFIG_BASEADDR 0x000000ff /* Base address of bank*/ |
| #define SGIMC_MCONFIG_RMASK 0x00001f00 /* Ram config bitmask */ |
| #define SGIMC_MCONFIG_BVALID 0x00002000 /* Bank is valid */ |
| #define SGIMC_MCONFIG_SBANKS 0x00004000 /* Number of subbanks */ |
| |
| u32 _unused13; |
| volatile u32 cmacc; /* Mem access config for CPU */ |
| u32 _unused14; |
| volatile u32 gmacc; /* Mem access config for GIO */ |
| |
| /* This define applies to both cmacc and gmacc registers above. */ |
| #define SGIMC_MACC_ALIASBIG 0x20000000 /* 512MB home for alias */ |
| |
| /* Error address/status regs from GIO and CPU perspectives. */ |
| u32 _unused15; |
| volatile u32 cerr; /* Error address reg for CPU */ |
| u32 _unused16; |
| volatile u32 cstat; /* Status reg for CPU */ |
| #define SGIMC_CSTAT_RD 0x00000100 /* read parity error */ |
| #define SGIMC_CSTAT_PAR 0x00000200 /* CPU parity error */ |
| #define SGIMC_CSTAT_ADDR 0x00000400 /* memory bus error bad addr */ |
| #define SGIMC_CSTAT_SYSAD_PAR 0x00000800 /* sysad parity error */ |
| #define SGIMC_CSTAT_SYSCMD_PAR 0x00001000 /* syscmd parity error */ |
| #define SGIMC_CSTAT_BAD_DATA 0x00002000 /* bad data identifier */ |
| #define SGIMC_CSTAT_PAR_MASK 0x00001f00 /* parity error mask */ |
| #define SGIMC_CSTAT_RD_PAR (SGIMC_CSTAT_RD | SGIMC_CSTAT_PAR) |
| |
| u32 _unused17; |
| volatile u32 gerr; /* Error address reg for GIO */ |
| u32 _unused18; |
| volatile u32 gstat; /* Status reg for GIO */ |
| #define SGIMC_GSTAT_RD 0x00000100 /* read parity error */ |
| #define SGIMC_GSTAT_WR 0x00000200 /* write parity error */ |
| #define SGIMC_GSTAT_TIME 0x00000400 /* GIO bus timed out */ |
| #define SGIMC_GSTAT_PROM 0x00000800 /* write to PROM when PROM_EN not set */ |
| #define SGIMC_GSTAT_ADDR 0x00001000 /* parity error on addr cycle */ |
| #define SGIMC_GSTAT_BC 0x00002000 /* parity error on byte count cycle */ |
| #define SGIMC_GSTAT_PIO_RD 0x00004000 /* read data parity on pio */ |
| #define SGIMC_GSTAT_PIO_WR 0x00008000 /* write data parity on pio */ |
| |
| /* Special hard bus locking registers. */ |
| u32 _unused19; |
| volatile u32 syssembit; /* Uni-bit system semaphore */ |
| u32 _unused20; |
| volatile u32 mlock; /* Global GIO memory access lock */ |
| u32 _unused21; |
| volatile u32 elock; /* Locks EISA from GIO accesses */ |
| |
| /* GIO dma control registers. */ |
| u32 _unused22[15]; |
| volatile u32 gio_dma_trans; /* DMA mask to translation GIO addrs */ |
| u32 _unused23; |
| volatile u32 gio_dma_sbits; /* DMA GIO addr substitution bits */ |
| u32 _unused24; |
| volatile u32 dma_intr_cause; /* DMA IRQ cause indicator bits */ |
| u32 _unused25; |
| volatile u32 dma_ctrl; /* Main DMA control reg */ |
| |
| /* DMA TLB entry 0 */ |
| u32 _unused26[5]; |
| volatile u32 dtlb_hi0; |
| u32 _unused27; |
| volatile u32 dtlb_lo0; |
| |
| /* DMA TLB entry 1 */ |
| u32 _unused28; |
| volatile u32 dtlb_hi1; |
| u32 _unused29; |
| volatile u32 dtlb_lo1; |
| |
| /* DMA TLB entry 2 */ |
| u32 _unused30; |
| volatile u32 dtlb_hi2; |
| u32 _unused31; |
| volatile u32 dtlb_lo2; |
| |
| /* DMA TLB entry 3 */ |
| u32 _unused32; |
| volatile u32 dtlb_hi3; |
| u32 _unused33; |
| volatile u32 dtlb_lo3; |
| |
| u32 _unused34[0x0392]; |
| |
| u32 _unused35; |
| volatile u32 rpsscounter; /* Chirps at 100ns */ |
| |
| u32 _unused36[0x1000/4-2*4]; |
| |
| u32 _unused37; |
| volatile u32 maddronly; /* Address DMA goes at */ |
| u32 _unused38; |
| volatile u32 maddrpdeflts; /* Same as above, plus set defaults */ |
| u32 _unused39; |
| volatile u32 dmasz; /* DMA count */ |
| u32 _unused40; |
| volatile u32 ssize; /* DMA stride size */ |
| u32 _unused41; |
| volatile u32 gmaddronly; /* Set GIO DMA but don't start trans */ |
| u32 _unused42; |
| volatile u32 dmaddnpgo; /* Set GIO DMA addr + start transfer */ |
| u32 _unused43; |
| volatile u32 dmamode; /* DMA mode config bit settings */ |
| u32 _unused44; |
| volatile u32 dmaccount; /* Zoom and byte count for DMA */ |
| u32 _unused45; |
| volatile u32 dmastart; /* Pedal to the metal. */ |
| u32 _unused46; |
| volatile u32 dmarunning; /* DMA op is in progress */ |
| u32 _unused47; |
| volatile u32 maddrdefstart; /* Set dma addr, defaults, and kick it */ |
| }; |
| |
| extern struct sgimc_regs *sgimc; |
| #define SGIMC_BASE 0x1fa00000 /* physical */ |
| |
| /* Base location of the two ram banks found in IP2[0268] machines. */ |
| #define SGIMC_SEG0_BADDR 0x08000000 |
| #define SGIMC_SEG1_BADDR 0x20000000 |
| |
| /* Maximum size of the above banks are per machine. */ |
| #define SGIMC_SEG0_SIZE_ALL 0x10000000 /* 256MB */ |
| #define SGIMC_SEG1_SIZE_IP20_IP22 0x08000000 /* 128MB */ |
| #define SGIMC_SEG1_SIZE_IP26_IP28 0x20000000 /* 512MB */ |
| |
| extern void sgimc_init(void); |
| |
| #endif /* _SGI_MC_H */ |
