patch-2.1.44 linux/include/asm-mips/sgimc.h

• Lines: 224
• Date: Thu Jun 26 12:33:40 1997
• Orig file: v2.1.43/linux/include/asm-mips/sgimc.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.43/linux/include/asm-mips/sgimc.h linux/include/asm-mips/sgimc.h
@@ -0,0 +1,223 @@
+/* $Id: sgimc.h,v 1.1 1997/06/06 09:40:04 ralf Exp $
+ * sgimc.h: Definitions for memory controller hardware found on
+ *          SGI IP20, IP22, IP26, and IP28 machines.
+ *
+ * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
+ */
+
+#ifndef _MIPS_SGIMC_H
+#define _MIPS_SGIMC_H
+
+struct sgimc_misc_ctrl {
+	unsigned long _unused1;
+	volatile unsigned long 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 */
+
+	unsigned long _unused2;
+	volatile unsigned long 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 */
+
+	unsigned long _unused3;
+	volatile unsigned long watchdogt;    /* Watchdog reg rdonly, write clears */
+
+	unsigned long _unused4;
+	volatile unsigned long 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 */
+
+	unsigned long _unused5[3];
+	volatile unsigned long divider;      /* Divider reg for RPSS */
+
+	unsigned long _unused6;
+	volatile unsigned char 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 */
+
+	unsigned char _unused7[3];
+	unsigned long _unused8[3];
+	volatile unsigned short rcntpre;     /* Preload refresh counter */
+
+	unsigned short _unused9;
+	unsigned long _unused9a;
+	volatile unsigned short rcounter;    /* Readonly refresh counter */
+
+	unsigned short _unused10;
+	unsigned long _unused11[13];
+	volatile unsigned long gioparm;      /* Parameter word for GIO64 */
+#define SGIMC_GIOPARM_HPC64       0x00000001 /* HPC talks to GIO using 64-bits */
+#define SGIMC_GIOPARM_GFX64       0x00000002 /* GFX talks to GIO using 64-bits */
+#define SGIMC_GIOPARM_EXP064      0x00000004 /* EXP(slot0) talks using 64-bits */
+#define SGIMC_GIOPARM_EXP164      0x00000008 /* EXP(slot1) talks using 64-bits */
+#define SGIMC_GIOPARM_EISA64      0x00000010 /* EISA bus talks 64-bits to GIO */
+#define SGIMC_GIOPARM_HPC264      0x00000020 /* 2nd HPX talks 64-bits to GIO */
+#define SGIMC_GIOPARM_RTIMEGFX    0x00000040 /* GFX device has realtime attr */
+#define SGIMC_GIOPARM_RTIMEEXP0   0x00000080 /* EXP(slot0) has realtime attr */
+#define SGIMC_GIOPARM_RTIMEEXP1   0x00000100 /* EXP(slot1) has realtime attr */
+#define SGIMC_GIOPARM_MASTEREISA  0x00000200 /* EISA bus can act as bus master */
+#define SGIMC_GIOPARM_ONEBUS      0x00000400 /* Exists one GIO64 pipelined bus */
+#define SGIMC_GIOPARM_MASTERGFX   0x00000800 /* GFX can act as a bus master */
+#define SGIMC_GIOPARM_MASTEREXP0  0x00001000 /* EXP(slot0) can bus master */
+#define SGIMC_GIOPARM_MASTEREXP1  0x00002000 /* EXP(slot1) can bus master */
+#define SGIMC_GIOPARM_PLINEEXP0   0x00004000 /* EXP(slot0) has pipeline attr */
+#define SGIMC_GIOPARM_PLINEEXP1   0x00008000 /* EXP(slot1) has pipeline attr */
+
+	unsigned long _unused13;
+	volatile unsigned short cputp;       /* CPU bus arb time period */
+
+	unsigned short _unused14;
+	unsigned long _unused15[3];
+	volatile unsigned short lbursttp;    /* Time period for long bursts */
+
+	unsigned short _unused16;
+	unsigned long _unused17[9];
+	volatile unsigned long mconfig0;     /* Memory config register zero */
+	unsigned long _unused18;
+	volatile unsigned long mconfig1;     /* Memory config register one */
+
+        /* These defines apply to both mconfig registers above. */
+#define SGIMC_MCONFIG_FOURMB     0x00000000  /* Physical ram = 4megs */
+#define SGIMC_MCONFIG_EIGHTMB    0x00000100  /* Physical ram = 8megs */
+#define SGIMC_MCONFIG_SXTEENMB   0x00000300  /* Physical ram = 16megs */
+#define SGIMC_MCONFIG_TTWOMB     0x00000700  /* Physical ram = 32megs */
+#define SGIMC_MCONFIG_SFOURMB    0x00000f00  /* Physical ram = 64megs */
+#define SGIMC_MCONFIG_OTEIGHTMB  0x00001f00  /* Physical ram = 128megs */
+#define SGIMC_MCONFIG_RMASK      0x00001f00  /* Ram config bitmask */
+
+	unsigned long _unused19;
+	volatile unsigned long cmacc;        /* Mem access config for CPU */
+	unsigned long _unused20;
+	volatile unsigned long 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. */
+	unsigned long _unused21;
+	volatile unsigned long cerr;         /* Error address reg for CPU */
+	unsigned long _unused22;
+	volatile unsigned long cstat;        /* Status reg for CPU */
+	unsigned long _unused23;
+	volatile unsigned long gerr;         /* Error address reg for GIO */
+	unsigned long _unused24;
+	volatile unsigned long gstat;        /* Status reg for GIO */
+
+	/* Special hard bus locking registers. */
+	unsigned long _unused25;
+	volatile unsigned char syssembit;    /* Uni-bit system semaphore */
+	unsigned char _unused26[3];
+	unsigned long _unused27;
+	volatile unsigned char mlock;        /* Global GIO memory access lock */
+	unsigned char _unused28[3];
+	unsigned long _unused29;
+	volatile unsigned char elock;        /* Locks EISA from GIO accesses */
+
+	/* GIO dma control registers. */
+	unsigned char _unused30[3];
+	unsigned long _unused31[14];
+	volatile unsigned long gio_dma_trans;/* DMA mask to translation GIO addrs */
+	unsigned long _unused32;
+	volatile unsigned long gio_dma_sbits;/* DMA GIO addr substitution bits */
+	unsigned long _unused33;
+	volatile unsigned long dma_intr_cause; /* DMA IRQ cause indicator bits */
+	unsigned long _unused34;
+	volatile unsigned long dma_ctrl;     /* Main DMA control reg */
+
+	/* DMA TLB entry 0 */
+	unsigned long _unused35;
+	volatile unsigned long dtlb_hi0;
+	unsigned long _unused36;
+	volatile unsigned long dtlb_lo0;
+
+	/* DMA TLB entry 1 */
+	unsigned long _unused37;
+	volatile unsigned long dtlb_hi1;
+	unsigned long _unused38;
+	volatile unsigned long dtlb_lo1;
+
+	/* DMA TLB entry 2 */
+	unsigned long _unused39;
+	volatile unsigned long dtlb_hi2;
+	unsigned long _unused40;
+	volatile unsigned long dtlb_lo2;
+
+	/* DMA TLB entry 3 */
+	unsigned long _unused41;
+	volatile unsigned long dtlb_hi3;
+	unsigned long _unused42;
+	volatile unsigned long dtlb_lo3;
+};
+
+/* MC misc control registers live at physical 0x1fa00000. */
+extern struct sgimc_misc_ctrl *mcmisc_regs;
+extern unsigned long *rpsscounter;          /* Chirps at 100ns */
+
+struct sgimc_dma_ctrl {
+	unsigned long _unused1;
+	volatile unsigned long maddronly;   /* Address DMA goes at */
+	unsigned long _unused2;
+	volatile unsigned long maddrpdeflts; /* Same as above, plus set defaults */
+	unsigned long _unused3;
+	volatile unsigned long dmasz;       /* DMA count */
+	unsigned long _unused4;
+	volatile unsigned long ssize;       /* DMA stride size */
+	unsigned long _unused5;
+	volatile unsigned long gmaddronly;  /* Set GIO DMA but do not start trans */
+	unsigned long _unused6;
+	volatile unsigned long dmaddnpgo;   /* Set GIO DMA addr + start transfer */
+	unsigned long _unused7;
+	volatile unsigned long dmamode;     /* DMA mode config bit settings */
+	unsigned long _unused8;
+	volatile unsigned long dmacount;    /* Zoom and byte count for DMA */
+	unsigned long _unused9;
+	volatile unsigned long dmastart;    /* Pedal to the metal. */
+	unsigned long _unused10;
+	volatile unsigned long dmarunning;  /* DMA op is in progress */
+	unsigned long _unused11;
+
+	/* Set dma addr, defaults, and kick it */
+	volatile unsigned long maddr_defl_go; /* go go go! -lm */
+};
+
+/* MC controller dma regs live at physical 0x1fa02000. */
+extern struct sgimc_dma_ctrl *dmactrlregs;
+
+/* 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. */
+extern unsigned long sgimc_seg0_size, sgimc_seg1_size;
+#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 /* !(_MIPS_SGIMC_H) */