LXR linux/arch/alpha/include/asm/core

   1/*
   2 * Marvel systems use the IO7 I/O chip provides PCI/PCIX/AGP access
   3 *
   4 * This file is based on:
   5 *
   6 * Marvel / EV7 System Programmer's Manual
   7 * Revision 1.00
   8 * 14 May 2001
   9 */
  10
  11#ifndef __ALPHA_MARVEL__H__
  12#define __ALPHA_MARVEL__H__
  13
  14#include <linux/types.h>
  15#include <linux/spinlock.h>
  16
  17#include <asm/compiler.h>
  18
  19#define MARVEL_MAX_PIDS          32 /* as long as we rely on 43-bit superpage */
  20#define MARVEL_IRQ_VEC_PE_SHIFT (10)
  21#define MARVEL_IRQ_VEC_IRQ_MASK ((1 << MARVEL_IRQ_VEC_PE_SHIFT) - 1)
  22#define MARVEL_NR_IRQS          \
  23        (16 + (MARVEL_MAX_PIDS * (1 << MARVEL_IRQ_VEC_PE_SHIFT)))
  24
  25/*
  26 * EV7 RBOX Registers
  27 */
  28typedef struct {
  29        volatile unsigned long csr __attribute__((aligned(16)));
  30} ev7_csr;
  31
  32typedef struct {
  33        ev7_csr RBOX_CFG;               /* 0x0000 */
  34        ev7_csr RBOX_NSVC;
  35        ev7_csr RBOX_EWVC;
  36        ev7_csr RBOX_WHAMI;
  37        ev7_csr RBOX_TCTL;              /* 0x0040 */
  38        ev7_csr RBOX_INT;
  39        ev7_csr RBOX_IMASK;
  40        ev7_csr RBOX_IREQ;
  41        ev7_csr RBOX_INTQ;              /* 0x0080 */
  42        ev7_csr RBOX_INTA;
  43        ev7_csr RBOX_IT;
  44        ev7_csr RBOX_SCRATCH1;
  45        ev7_csr RBOX_SCRATCH2;          /* 0x00c0 */
  46        ev7_csr RBOX_L_ERR;
  47} ev7_csrs;
  48
  49/*
  50 * EV7 CSR addressing macros
  51 */
  52#define EV7_MASK40(addr)        ((addr) & ((1UL << 41) - 1))
  53#define EV7_KERN_ADDR(addr)     ((void *)(IDENT_ADDR | EV7_MASK40(addr)))
  54
  55#define EV7_PE_MASK             0x1ffUL /* 9 bits ( 256 + mem/io ) */
  56#define EV7_IPE(pe)             ((~((long)(pe)) & EV7_PE_MASK) << 35)
  57
  58#define EV7_CSR_PHYS(pe, off)   (EV7_IPE(pe) | (0x7FFCUL << 20) | (off))
  59#define EV7_CSRS_PHYS(pe)       (EV7_CSR_PHYS(pe, 0UL))
  60
  61#define EV7_CSR_KERN(pe, off)   (EV7_KERN_ADDR(EV7_CSR_PHYS(pe, off)))
  62#define EV7_CSRS_KERN(pe)       (EV7_KERN_ADDR(EV7_CSRS_PHYS(pe)))
  63
  64#define EV7_CSR_OFFSET(name)    ((unsigned long)&((ev7_csrs *)NULL)->name.csr)
  65
  66/*
  67 * IO7 registers
  68 */
  69typedef struct {
  70        volatile unsigned long csr __attribute__((aligned(64)));
  71} io7_csr;
  72
  73typedef struct {
  74        /* I/O Port Control Registers */
  75        io7_csr POx_CTRL;               /* 0x0000 */
  76        io7_csr POx_CACHE_CTL;
  77        io7_csr POx_TIMER;
  78        io7_csr POx_IO_ADR_EXT;
  79        io7_csr POx_MEM_ADR_EXT;        /* 0x0100 */
  80        io7_csr POx_XCAL_CTRL;
  81        io7_csr rsvd1[2];       /* ?? spec doesn't show 0x180 */
  82        io7_csr POx_DM_SOURCE;          /* 0x0200 */
  83        io7_csr POx_DM_DEST;
  84        io7_csr POx_DM_SIZE;
  85        io7_csr POx_DM_CTRL;
  86        io7_csr rsvd2[4];               /* 0x0300 */
  87
  88        /* AGP Control Registers -- port 3 only */
  89        io7_csr AGP_CAP_ID;             /* 0x0400 */
  90        io7_csr AGP_STAT;
  91        io7_csr AGP_CMD;
  92        io7_csr rsvd3;
  93
  94        /* I/O Port Monitor Registers */
  95        io7_csr POx_MONCTL;             /* 0x0500 */
  96        io7_csr POx_CTRA;
  97        io7_csr POx_CTRB;
  98        io7_csr POx_CTR56;
  99        io7_csr POx_SCRATCH;            /* 0x0600 */
 100        io7_csr POx_XTRA_A;
 101        io7_csr POx_XTRA_TS;
 102        io7_csr POx_XTRA_Z;
 103        io7_csr rsvd4;                  /* 0x0700 */
 104        io7_csr POx_THRESHA;
 105        io7_csr POx_THRESHB;
 106        io7_csr rsvd5[33];
 107
 108        /* System Address Space Window Control Registers */
 109
 110        io7_csr POx_WBASE[4];           /* 0x1000 */
 111        io7_csr POx_WMASK[4];
 112        io7_csr POx_TBASE[4];
 113        io7_csr POx_SG_TBIA;
 114        io7_csr POx_MSI_WBASE;
 115        io7_csr rsvd6[50];
 116
 117        /* I/O Port Error Registers */
 118        io7_csr POx_ERR_SUM;
 119        io7_csr POx_FIRST_ERR;
 120        io7_csr POx_MSK_HEI;
 121        io7_csr POx_TLB_ERR;
 122        io7_csr POx_SPL_COMPLT;
 123        io7_csr POx_TRANS_SUM;
 124        io7_csr POx_FRC_PCI_ERR;
 125        io7_csr POx_MULT_ERR;
 126        io7_csr rsvd7[8];
 127
 128        /* I/O Port End of Interrupt Registers */
 129        io7_csr EOI_DAT;
 130        io7_csr rsvd8[7];
 131        io7_csr POx_IACK_SPECIAL;
 132        io7_csr rsvd9[103];
 133} io7_ioport_csrs;
 134
 135typedef struct {
 136        io7_csr IO_ASIC_REV;            /* 0x30.0000 */
 137        io7_csr IO_SYS_REV;
 138        io7_csr SER_CHAIN3;
 139        io7_csr PO7_RST1;
 140        io7_csr PO7_RST2;               /* 0x30.0100 */
 141        io7_csr POx_RST[4];
 142        io7_csr IO7_DWNH;
 143        io7_csr IO7_MAF;
 144        io7_csr IO7_MAF_TO;
 145        io7_csr IO7_ACC_CLUMP;          /* 0x30.0300 */
 146        io7_csr IO7_PMASK;
 147        io7_csr IO7_IOMASK;
 148        io7_csr IO7_UPH;
 149        io7_csr IO7_UPH_TO;             /* 0x30.0400 */
 150        io7_csr RBX_IREQ_OFF;
 151        io7_csr RBX_INTA_OFF;
 152        io7_csr INT_RTY;
 153        io7_csr PO7_MONCTL;             /* 0x30.0500 */
 154        io7_csr PO7_CTRA;
 155        io7_csr PO7_CTRB;
 156        io7_csr PO7_CTR56;
 157        io7_csr PO7_SCRATCH;            /* 0x30.0600 */
 158        io7_csr PO7_XTRA_A;
 159        io7_csr PO7_XTRA_TS;
 160        io7_csr PO7_XTRA_Z;
 161        io7_csr PO7_PMASK;              /* 0x30.0700 */
 162        io7_csr PO7_THRESHA;
 163        io7_csr PO7_THRESHB;
 164        io7_csr rsvd1[97];
 165        io7_csr PO7_ERROR_SUM;          /* 0x30.2000 */
 166        io7_csr PO7_BHOLE_MASK;
 167        io7_csr PO7_HEI_MSK;
 168        io7_csr PO7_CRD_MSK;
 169        io7_csr PO7_UNCRR_SYM;          /* 0x30.2100 */
 170        io7_csr PO7_CRRCT_SYM;
 171        io7_csr PO7_ERR_PKT[2];
 172        io7_csr PO7_UGBGE_SYM;          /* 0x30.2200 */
 173        io7_csr rsbv2[887];
 174        io7_csr PO7_LSI_CTL[128];       /* 0x31.0000 */
 175        io7_csr rsvd3[123];
 176        io7_csr HLT_CTL;                /* 0x31.3ec0 */
 177        io7_csr HPI_CTL;                /* 0x31.3f00 */
 178        io7_csr CRD_CTL;
 179        io7_csr STV_CTL;
 180        io7_csr HEI_CTL;
 181        io7_csr PO7_MSI_CTL[16];        /* 0x31.4000 */
 182        io7_csr rsvd4[240];
 183
 184        /*
 185         * Interrupt Diagnostic / Test
 186         */
 187        struct {
 188                io7_csr INT_PND;
 189                io7_csr INT_CLR;
 190                io7_csr INT_EOI;
 191                io7_csr rsvd[29];
 192        } INT_DIAG[4];
 193        io7_csr rsvd5[125];             /* 0x31.a000 */
 194        io7_csr MISC_PND;               /* 0x31.b800 */
 195        io7_csr rsvd6[31];
 196        io7_csr MSI_PND[16];            /* 0x31.c000 */
 197        io7_csr rsvd7[16];
 198        io7_csr MSI_CLR[16];            /* 0x31.c800 */
 199} io7_port7_csrs;
 200
 201/* 
 202 * IO7 DMA Window Base register (POx_WBASEx)
 203 */
 204#define wbase_m_ena  0x1
 205#define wbase_m_sg   0x2
 206#define wbase_m_dac  0x4
 207#define wbase_m_addr 0xFFF00000
 208union IO7_POx_WBASE {
 209        struct {
 210                unsigned ena : 1;       /* <0>                  */
 211                unsigned sg : 1;        /* <1>                  */
 212                unsigned dac : 1;       /* <2> -- window 3 only */
 213                unsigned rsvd1 : 17; 
 214                unsigned addr : 12;     /* <31:20>              */
 215                unsigned rsvd2 : 32;
 216        } bits;
 217        unsigned as_long[2];
 218        unsigned as_quad;
 219};
 220
 221/*
 222 * IO7 IID (Interrupt IDentifier) format
 223 *
 224 * For level-sensative interrupts, int_num is encoded as:
 225 *
 226 *      bus/port        slot/device     INTx
 227 *      <7:5>           <4:2>           <1:0>
 228 */
 229union IO7_IID {
 230        struct {
 231                unsigned int_num : 9;           /* <8:0>        */
 232                unsigned tpu_mask : 4;          /* <12:9> rsvd  */
 233                unsigned msi : 1;               /* 13           */
 234                unsigned ipe : 10;              /* <23:14>      */
 235                unsigned long rsvd : 40;                
 236        } bits;
 237        unsigned int as_long[2];
 238        unsigned long as_quad;
 239};
 240
 241/*
 242 * IO7 addressing macros
 243 */
 244#define IO7_KERN_ADDR(addr)     (EV7_KERN_ADDR(addr))
 245
 246#define IO7_PORT_MASK           0x07UL  /* 3 bits of port          */
 247
 248#define IO7_IPE(pe)             (EV7_IPE(pe))
 249#define IO7_IPORT(port)         ((~((long)(port)) & IO7_PORT_MASK) << 32)
 250
 251#define IO7_HOSE(pe, port)      (IO7_IPE(pe) | IO7_IPORT(port))
 252
 253#define IO7_MEM_PHYS(pe, port)  (IO7_HOSE(pe, port) | 0x00000000UL)
 254#define IO7_CONF_PHYS(pe, port) (IO7_HOSE(pe, port) | 0xFE000000UL)
 255#define IO7_IO_PHYS(pe, port)   (IO7_HOSE(pe, port) | 0xFF000000UL)
 256#define IO7_CSR_PHYS(pe, port, off) \
 257                                (IO7_HOSE(pe, port) | 0xFF800000UL | (off))
 258#define IO7_CSRS_PHYS(pe, port) (IO7_CSR_PHYS(pe, port, 0UL))
 259#define IO7_PORT7_CSRS_PHYS(pe) (IO7_CSR_PHYS(pe, 7, 0x300000UL))
 260
 261#define IO7_MEM_KERN(pe, port)      (IO7_KERN_ADDR(IO7_MEM_PHYS(pe, port)))
 262#define IO7_CONF_KERN(pe, port)     (IO7_KERN_ADDR(IO7_CONF_PHYS(pe, port)))
 263#define IO7_IO_KERN(pe, port)       (IO7_KERN_ADDR(IO7_IO_PHYS(pe, port)))
 264#define IO7_CSR_KERN(pe, port, off) (IO7_KERN_ADDR(IO7_CSR_PHYS(pe,port,off)))
 265#define IO7_CSRS_KERN(pe, port)     (IO7_KERN_ADDR(IO7_CSRS_PHYS(pe, port)))
 266#define IO7_PORT7_CSRS_KERN(pe)     (IO7_KERN_ADDR(IO7_PORT7_CSRS_PHYS(pe)))
 267
 268#define IO7_PLL_RNGA(pll)       (((pll) >> 3) & 0x7)
 269#define IO7_PLL_RNGB(pll)       (((pll) >> 6) & 0x7)
 270
 271#define IO7_MEM_SPACE           (2UL * 1024 * 1024 * 1024)      /* 2GB MEM */
 272#define IO7_IO_SPACE            (8UL * 1024 * 1024)             /* 8MB I/O */
 273
 274 
 275/* 
 276 * Offset between ram physical addresses and pci64 DAC addresses
 277 */
 278#define IO7_DAC_OFFSET          (1UL << 49)
 279
 280/*
 281 * This is needed to satisify the IO() macro used in initializing the machvec
 282 */
 283#define MARVEL_IACK_SC                                                  \
 284        ((unsigned long)                                                \
 285         (&(((io7_ioport_csrs *)IO7_CSRS_KERN(0, 0))->POx_IACK_SPECIAL)))
 286
 287#ifdef __KERNEL__
 288
 289/*
 290 * IO7 structs
 291 */
 292#define IO7_NUM_PORTS 4
 293#define IO7_AGP_PORT  3
 294
 295struct io7_port {
 296        struct io7 *io7;
 297        struct pci_controller *hose;
 298
 299        int enabled;
 300        unsigned int port;
 301        io7_ioport_csrs *csrs;
 302
 303        unsigned long saved_wbase[4];
 304        unsigned long saved_wmask[4];
 305        unsigned long saved_tbase[4];
 306};
 307
 308struct io7 {
 309        struct io7 *next;
 310
 311        unsigned int pe;
 312        io7_port7_csrs *csrs;
 313        struct io7_port ports[IO7_NUM_PORTS];
 314
 315        spinlock_t irq_lock;
 316};
 317
 318#ifndef __EXTERN_INLINE
 319# define __EXTERN_INLINE extern inline
 320# define __IO_EXTERN_INLINE
 321#endif
 322
 323/*
 324 * I/O functions. All access through linear space.
 325 */
 326
 327/*
 328 * Memory functions.  All accesses through linear space.
 329 */
 330
 331#define vucp    volatile unsigned char __force *
 332#define vusp    volatile unsigned short __force *
 333
 334extern unsigned int marvel_ioread8(void __iomem *);
 335extern void marvel_iowrite8(u8 b, void __iomem *);
 336
 337__EXTERN_INLINE unsigned int marvel_ioread16(void __iomem *addr)
 338{
 339        return __kernel_ldwu(*(vusp)addr);
 340}
 341
 342__EXTERN_INLINE void marvel_iowrite16(u16 b, void __iomem *addr)
 343{
 344        __kernel_stw(b, *(vusp)addr);
 345}
 346
 347extern void __iomem *marvel_ioremap(unsigned long addr, unsigned long size);
 348extern void marvel_iounmap(volatile void __iomem *addr);
 349extern void __iomem *marvel_ioportmap (unsigned long addr);
 350
 351__EXTERN_INLINE int marvel_is_ioaddr(unsigned long addr)
 352{
 353        return (addr >> 40) & 1;
 354}
 355
 356extern int marvel_is_mmio(const volatile void __iomem *);
 357
 358#undef vucp
 359#undef vusp
 360
 361#undef __IO_PREFIX
 362#define __IO_PREFIX             marvel
 363#define marvel_trivial_rw_bw    1
 364#define marvel_trivial_rw_lq    1
 365#define marvel_trivial_io_bw    0
 366#define marvel_trivial_io_lq    1
 367#define marvel_trivial_iounmap  0
 368#include <asm/io_trivial.h>
 369
 370#ifdef __IO_EXTERN_INLINE
 371# undef __EXTERN_INLINE
 372# undef __IO_EXTERN_INLINE
 373#endif
 374
 375#endif /* __KERNEL__ */
 376
 377#endif /* __ALPHA_MARVEL__H__ */
 378