Quelle  xwidget.h   Sprache: C

/*
 * 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.
 *
 * xwidget.h - generic crosstalk widget header file, derived from IRIX
 * <sys/xtalk/xtalkwidget.h>, revision 1.32.
 *
 * Copyright (C) 1996, 1999 Silcon Graphics, Inc.
 * Copyright (C) 1999 Ralf Baechle (ralf@gnu.org)
 */
#ifndef _ASM_XTALK_XWIDGET_H
#define _ASM_XTALK_XWIDGET_H

#include <linux/types.h>
#include <asm/xtalk/xtalk.h>

#define WIDGET_ID   0x04
#define WIDGET_STATUS   0x0c
#define WIDGET_ERR_UPPER_ADDR  0x14
#define WIDGET_ERR_LOWER_ADDR  0x1c
#define WIDGET_CONTROL   0x24
#define WIDGET_REQ_TIMEOUT  0x2c
#define WIDGET_INTDEST_UPPER_ADDR 0x34
#define WIDGET_INTDEST_LOWER_ADDR 0x3c
#define WIDGET_ERR_CMD_WORD  0x44
#define WIDGET_LLP_CFG   0x4c
#define WIDGET_TFLUSH   0x54

/* WIDGET_ID */
#define WIDGET_REV_NUM   0xf0000000
#define WIDGET_PART_NUM   0x0ffff000
#define WIDGET_MFG_NUM   0x00000ffe
#define WIDGET_REV_NUM_SHFT  28
#define WIDGET_PART_NUM_SHFT  12
#define WIDGET_MFG_NUM_SHFT  1

#define XWIDGET_PART_NUM(widgetid) (((widgetid) & WIDGET_PART_NUM) >> WIDGET_PART_NUM_SHFT)
#define XWIDGET_REV_NUM(widgetid) (((widgetid) & WIDGET_REV_NUM) >> WIDGET_REV_NUM_SHFT)
#define XWIDGET_MFG_NUM(widgetid) (((widgetid) & WIDGET_MFG_NUM) >> WIDGET_MFG_NUM_SHFT)

/* WIDGET_STATUS */
#define WIDGET_LLP_REC_CNT  0xff000000
#define WIDGET_LLP_TX_CNT  0x00ff0000
#define WIDGET_PENDING   0x0000001f

/* WIDGET_ERR_UPPER_ADDR */
#define WIDGET_ERR_UPPER_ADDR_ONLY 0x0000ffff

/* WIDGET_CONTROL */
#define WIDGET_F_BAD_PKT  0x00010000
#define WIDGET_LLP_XBAR_CRD  0x0000f000
#define WIDGET_LLP_XBAR_CRD_SHFT 12
#define WIDGET_CLR_RLLP_CNT  0x00000800
#define WIDGET_CLR_TLLP_CNT  0x00000400
#define WIDGET_SYS_END   0x00000200
#define WIDGET_MAX_TRANS  0x000001f0
#define WIDGET_WIDGET_ID  0x0000000f

/* WIDGET_INTDEST_UPPER_ADDR */
#define WIDGET_INT_VECTOR  0xff000000
#define WIDGET_INT_VECTOR_SHFT  24
#define WIDGET_TARGET_ID  0x000f0000
#define WIDGET_TARGET_ID_SHFT  16
#define WIDGET_UPP_ADDR   0x0000ffff

/* WIDGET_ERR_CMD_WORD */
#define WIDGET_DIDN   0xf0000000
#define WIDGET_SIDN   0x0f000000
#define WIDGET_PACTYP   0x00f00000
#define WIDGET_TNUM   0x000f8000
#define WIDGET_COHERENT   0x00004000
#define WIDGET_DS   0x00003000
#define WIDGET_GBR   0x00000800
#define WIDGET_VBPM   0x00000400
#define WIDGET_ERROR   0x00000200
#define WIDGET_BARRIER   0x00000100

/* WIDGET_LLP_CFG */
#define WIDGET_LLP_MAXRETRY  0x03ff0000
#define WIDGET_LLP_MAXRETRY_SHFT 16
#define WIDGET_LLP_NULLTIMEOUT  0x0000fc00
#define WIDGET_LLP_NULLTIMEOUT_SHFT 10
#define WIDGET_LLP_MAXBURST  0x000003ff
#define WIDGET_LLP_MAXBURST_SHFT 0

/* Xtalk Widget Device Mfgr Nums */
#define WIDGET_XBOW_MFGR_NUM 0x0      /* IP30 XBow Chip */
#define WIDGET_XXBOW_MFGR_NUM 0x0      /* IP35 Xbow + XBridge Chip */
#define WIDGET_ODYS_MFGR_NUM 0x023    /* Odyssey / VPro GFX */
#define WIDGET_TPU_MFGR_NUM 0x024    /* Tensor Processor Unit */
#define WIDGET_XBRDG_MFGR_NUM 0x024    /* IP35 XBridge Chip */
#define WIDGET_HEART_MFGR_NUM 0x036    /* IP30 HEART Chip */
#define WIDGET_BRIDG_MFGR_NUM 0x036    /* PCI Bridge */
#define WIDGET_HUB_MFGR_NUM 0x036    /* IP27 Hub Chip */
#define WIDGET_BDRCK_MFGR_NUM 0x036    /* IP35 Bedrock Chip */
#define WIDGET_IMPCT_MFGR_NUM 0x2aa    /* HQ4 / Impact GFX */
#define WIDGET_KONA_MFGR_NUM 0x2aa    /* InfiniteReality3 / Kona GFX */
#define WIDGET_NULL_MFGR_NUM -1       /* NULL */

/* Xtalk Widget Device Part Nums */
#define WIDGET_XBOW_PART_NUM 0x0000
#define WIDGET_HEART_PART_NUM 0xc001
#define WIDGET_BRIDG_PART_NUM 0xc002
#define WIDGET_IMPCT_PART_NUM 0xc003
#define WIDGET_ODYS_PART_NUM 0xc013
#define WIDGET_HUB_PART_NUM 0xc101
#define WIDGET_KONA_PART_NUM 0xc102
#define WIDGET_BDRCK_PART_NUM 0xc110
#define WIDGET_TPU_PART_NUM 0xc202
#define WIDGET_XXBOW_PART_NUM 0xd000
#define WIDGET_XBRDG_PART_NUM 0xd002
#define WIDGET_NULL_PART_NUM -1

/* For Xtalk Widget identification */
struct widget_ident {
 u32 mfgr;
 u32 part;
 char *name;
 char *revs[16];
};

/* Known Xtalk Widgets */
static const struct widget_ident __initconst widget_idents[] = {
 {
  WIDGET_XBOW_MFGR_NUM,
  WIDGET_XBOW_PART_NUM,
  "xbow",
  {NULL, "1.0", "1.1", "1.2", "1.3", "2.0", NULL},
 },
 {
  WIDGET_HEART_MFGR_NUM,
  WIDGET_HEART_PART_NUM,
  "heart",
  {NULL, "A", "B", "C", "D", "E", "F", NULL},
 },
 {
  WIDGET_BRIDG_MFGR_NUM,
  WIDGET_BRIDG_PART_NUM,
  "bridge",
  {NULL, "A", "B", "C", "D", NULL},
 },
 {
  WIDGET_IMPCT_MFGR_NUM,
  WIDGET_IMPCT_PART_NUM,
  "impact",
  {NULL, "A", "B", NULL},
 },
 {
  WIDGET_ODYS_MFGR_NUM,
  WIDGET_ODYS_PART_NUM,
  "odyssey",
  {NULL, "A", "B", NULL},
 },
 {
  WIDGET_HUB_MFGR_NUM,
  WIDGET_HUB_PART_NUM,
  "hub",
  {NULL, "1.0", "2.0", "2.1", "2.2", "2.3", "2.4", NULL},
 },
 {
  WIDGET_KONA_MFGR_NUM,
  WIDGET_KONA_PART_NUM,
  "kona",
  {NULL},
 },
 {
  WIDGET_BDRCK_MFGR_NUM,
  WIDGET_BDRCK_PART_NUM,
  "bedrock",
  {NULL, "1.0", "1.1", NULL},
 },
 {
  WIDGET_TPU_MFGR_NUM,
  WIDGET_TPU_PART_NUM,
  "tpu",
  {"0", NULL},
 },
 {
  WIDGET_XXBOW_MFGR_NUM,
  WIDGET_XXBOW_PART_NUM,
  "xxbow",
  {NULL, "1.0", "2.0", NULL},
 },
 {
  WIDGET_XBRDG_MFGR_NUM,
  WIDGET_XBRDG_PART_NUM,
  "xbridge",
  {NULL, "A", "B", NULL},
 },
 {
  WIDGET_NULL_MFGR_NUM,
  WIDGET_NULL_PART_NUM,
  NULL,
  {NULL},
 }
};

/*
 * according to the crosstalk spec, only 32-bits access to the widget
 * configuration registers is allowed. some widgets may allow 64-bits
 * access but software should not depend on it.  registers beyond the
 * widget target flush register are widget dependent thus will not be
 * defined here
 */
#ifndef __ASSEMBLY__
typedef u32 widgetreg_t;

/* widget configuration registers */
typedef volatile struct widget_cfg {
 widgetreg_t  w_pad_0;  /* 0x00 */
 widgetreg_t  w_id;   /* 0x04 */
 widgetreg_t  w_pad_1;  /* 0x08 */
 widgetreg_t  w_status;  /* 0x0c */
 widgetreg_t  w_pad_2;  /* 0x10 */
 widgetreg_t  w_err_upper_addr; /* 0x14 */
 widgetreg_t  w_pad_3;  /* 0x18 */
 widgetreg_t  w_err_lower_addr; /* 0x1c */
 widgetreg_t  w_pad_4;  /* 0x20 */
 widgetreg_t  w_control;  /* 0x24 */
 widgetreg_t  w_pad_5;  /* 0x28 */
 widgetreg_t  w_req_timeout;  /* 0x2c */
 widgetreg_t  w_pad_6;  /* 0x30 */
 widgetreg_t  w_intdest_upper_addr; /* 0x34 */
 widgetreg_t  w_pad_7;  /* 0x38 */
 widgetreg_t  w_intdest_lower_addr; /* 0x3c */
 widgetreg_t  w_pad_8;  /* 0x40 */
 widgetreg_t  w_err_cmd_word;  /* 0x44 */
 widgetreg_t  w_pad_9;  /* 0x48 */
 widgetreg_t  w_llp_cfg;  /* 0x4c */
 widgetreg_t  w_pad_10;  /* 0x50 */
 widgetreg_t  w_tflush;  /* 0x54 */
} widget_cfg_t;

typedef struct {
 unsigned didn:4;
 unsigned sidn:4;
 unsigned pactyp:4;
 unsigned tnum:5;
 unsigned ct:1;
 unsigned ds:2;
 unsigned gbr:1;
 unsigned vbpm:1;
 unsigned error:1;
 unsigned bo:1;
 unsigned other:8;
} w_err_cmd_word_f;

typedef union {
 widgetreg_t  r;
 w_err_cmd_word_f f;
} w_err_cmd_word_u;

typedef struct xwidget_info_s *xwidget_info_t;

/*
 * Crosstalk Widget Hardware Identification, as defined in the Crosstalk spec.
 */
typedef struct xwidget_hwid_s {
 xwidget_part_num_t part_num;
 xwidget_rev_num_t rev_num;
 xwidget_mfg_num_t mfg_num;
} *xwidget_hwid_t;


/*
 * Returns 1 if a driver that handles devices described by hwid1 is able
 * to manage a device with hardwareid hwid2.  NOTE: We don't check rev
 * numbers at all.
 */
#define XWIDGET_HARDWARE_ID_MATCH(hwid1, hwid2) \
 (((hwid1)->part_num == (hwid2)->part_num) && \
 (((hwid1)->mfg_num == XWIDGET_MFG_NUM_NONE) || \
 ((hwid2)->mfg_num == XWIDGET_MFG_NUM_NONE) || \
 ((hwid1)->mfg_num == (hwid2)->mfg_num)))

#endif /* !__ASSEMBLY__ */

#endif /* _ASM_XTALK_XWIDGET_H */