usr/src/uts/common/sys/agp/agpgart_impl.h

   1 /*
   2  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
   3  * Use is subject to license terms.
   4  */
   5
   6 #ifndef _SYS_AGPGART_IMPL_H
   7 #define _SYS_AGPGART_IMPL_H
   8
   9 #pragma ident   "%Z%%M% %I%     %E% SMI"
  10
  11 #ifdef __cplusplus
  12 extern "C" {
  13 #endif
  14
  15
  16 #ifdef _KERNEL
  17
  18 #define AGPGART_MAX_INSTANCES   1
  19 #define AGP_MAXKEYS             256
  20 #define AGPGART_DEVNODE         "agpgart"
  21
  22 /*
  23  * The values of type agp_arc_type_t are used as indexes into arc_name
  24  * in agp_kstat.c.
  25  * So if agp_arc_type_t's values are changed in the future, the content
  26  * of arc_name must be changed accordingly.
  27  */
  28 enum agp_arc_type {
  29         ARC_IGD810 = 0,
  30         ARC_IGD830 = 1,
  31         ARC_INTELAGP = 2,
  32         ARC_AMD64AGP = 3,
  33         ARC_UNKNOWN = 5
  34 };
  35 typedef enum agp_arc_type agp_arc_type_t;
  36
  37 /* linked list structure of multiple agp gart devices access handles */
  38 typedef struct  amd64_gart_dev_list {
  39         ldi_handle_t                    gart_devhdl;
  40         struct  amd64_gart_dev_list     *next;
  41 } amd64_gart_dev_list_t;
  42
  43 typedef struct amd64_garts_dev {
  44         int                     gart_device_num;
  45         amd64_gart_dev_list_t   *gart_dev_list_head;
  46 } amd64_garts_dev_t;
  47
  48 /*
  49  * AGP target and master device register their config space access
  50  * interface here.
  51  * In AMD64, gart_device_num is the number of hostbridge (device(1100, 1022))
  52  * refer to <<Bios and Kernel Developer's Guide for AMD athlon64 and operton>>
  53  */
  54 typedef struct agp_registered_dev {
  55         amd64_garts_dev_t       agprd_cpugarts;
  56         ldi_handle_t            agprd_targethdl;
  57         ldi_handle_t            agprd_masterhdl;
  58         agp_arc_type_t          agprd_arctype; /* system types */
  59 } agp_registered_dev_t;
  60
  61 /*
  62  * If the OS have direct mapping support for mapping physical page frames
  63  * directly to user address, we use this struct for memory
  64  * allocation.
  65  */
  66 typedef struct agp_pmem_handle {
  67         devmap_pmem_cookie_t pmem_cookie;
  68 } agp_pmem_handle_t;
  69
  70 /*
  71  * This struct is used for DDI-compliant memory allocations.
  72  */
  73 typedef struct agp_kmem_handle {
  74         ddi_dma_handle_t        kmem_handle;
  75         ddi_dma_cookie_t        kmem_dcookie;
  76         uint32_t                kmem_cookies_num;
  77         caddr_t                 kmem_kvaddr;
  78         size_t                  kmem_reallen;
  79         ddi_acc_handle_t        kmem_acchdl;
  80 } agp_kmem_handle_t;
  81
  82 typedef struct keytable_ent {
  83         int             kte_type;       /* agp memory type */
  84         int             kte_key;        /* memory key */
  85         uint32_t        kte_pgoff;      /* aperture offset bound in pages */
  86         pgcnt_t         kte_pages;      /* user-requested size in pages */
  87         int             kte_bound;      /* bound to gart table */
  88         void            *kte_memhdl;    /* agp_kmem or agp_pmem handle */
  89         pfn_t           *kte_pfnarray;  /* page frame numbers allocated */
  90         int     kte_refcnt;     /* reference count */
  91 } keytable_ent_t;
  92
  93 typedef struct key_list {
  94         int     key_idx;
  95         struct  key_list *next;
  96 } key_list_t;
  97
  98 /*
  99  * for kstat
 100  */
 101 typedef struct agp_kern_info {
 102         uint32_t        agpki_mdevid;
 103         agp_version_t   agpki_mver;
 104         uint32_t        agpki_mstatus;
 105         size_t          agpki_presize;  /* valid only for IGD, in KB */
 106         uint32_t        agpki_tdevid;
 107         agp_version_t   agpki_tver;
 108         uint32_t        agpki_tstatus;
 109         uint64_t        agpki_aperbase;
 110         uint32_t        agpki_apersize; /* in MB */
 111 } agp_kern_info_t;
 112
 113 #ifdef  _MULTI_DATAMODEL
 114 typedef struct _agp_info32 {
 115         agp_version_t   agpi32_version;
 116         uint32_t        agpi32_devid; /* device VID + DID */
 117         uint32_t        agpi32_mode; /* mode of bridge */
 118         uint32_t        agpi32_aperbase; /* base of aperture */
 119         uint32_t        agpi32_apersize; /* in MB */
 120         uint32_t        agpi32_pgtotal; /* max number of pages */
 121         uint32_t        agpi32_pgsystem; /* same as pg_total */
 122         uint32_t        agpi32_pgused; /* pages consumed */
 123 } agp_info32_t;
 124 #endif /* _MULTI_DATAMODEL */
 125
 126 typedef struct  agpgart_softstate {
 127         dev_info_t      *asoft_dip;
 128         kmutex_t        asoft_instmutex;
 129         agp_kern_info_t asoft_info;
 130         int             asoft_opened;   /* 0 not opened, non-0 opened */
 131         int             asoft_acquired; /* 0 released, 1 acquired */
 132         int             asoft_agpen;    /* 0 disbaled, 1 enabled */
 133         pid_t           asoft_curpid;   /* the process accquiring gart */
 134         uint32_t        asoft_mode;     /* agp mode be set */
 135         uint32_t        asoft_pgtotal;  /* total available pages */
 136         uint32_t        asoft_pgused;   /* pages already used */
 137         /* resource handles */
 138         ldi_ident_t     asoft_li;       /* for ldi ops */
 139         keytable_ent_t  *asoft_table;   /* key table for all allocated table */
 140         ddi_dma_handle_t        gart_dma_handle;        /* for GATT table */
 141         ddi_acc_handle_t        gart_dma_acc_handle;    /* for GATT table */
 142
 143         /* gart table info */
 144         uint64_t        gart_pbase; /* gart table physical address */
 145         caddr_t         gart_vbase; /* kernel-vir addr for GATT table */
 146         size_t          gart_size;  /* the size of aperture in megabytes */
 147         /* all registered agp device in here */
 148         agp_registered_dev_t    asoft_devreg;
 149         kstat_t                 *asoft_ksp;
 150 } agpgart_softstate_t;
 151
 152 typedef struct agpgart_ctx {
 153         offset_t        actx_off;
 154         agpgart_softstate_t *actx_sc;
 155 } agpgart_ctx_t;
 156
 157 #define KMEMP(p)                ((agp_kmem_handle_t *)p)
 158 #define PMEMP(p)                ((agp_pmem_handle_t *)p)
 159
 160 int agp_init_kstats(agpgart_softstate_t *);
 161 void agp_fini_kstats(agpgart_softstate_t *);
 162
 163 #endif /* _KERNEL */
 164
 165 #ifdef __cplusplus
 166 }
 167 #endif
 168
 169 #endif /* _SYS_AGPGART_IMPL_H */