1 /*
2 * Copyright (c) 2009, Intel Corporation.
3 * All Rights Reserved.
4 */
5
6 /*
7 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
8 * Use is subject to license terms.
9 */
10
11 #ifndef _SYS_AGPGART_IMPL_H
12 #define _SYS_AGPGART_IMPL_H
13
14 #ifdef __cplusplus
15 extern "C" {
16 #endif
17
18
19 #ifdef _KERNEL
20
21 #define AGPGART_MAX_INSTANCES 1
22 #define AGP_MAXKEYS 256
23 #define AGPGART_DEVNODE "agpgart"
24
25 /*
26 * The values of type agp_arc_type_t are used as indexes into arc_name
27 * in agp_kstat.c.
28 * So if agp_arc_type_t's values are changed in the future, the content
29 * of arc_name must be changed accordingly.
30 */
31 enum agp_arc_type {
32 ARC_IGD810 = 0,
33 ARC_IGD830 = 1,
34 ARC_INTELAGP = 2,
35 ARC_AMD64AGP = 3,
36 ARC_UNKNOWN = 5
37 };
38 typedef enum agp_arc_type agp_arc_type_t;
39
40 /* linked list structure of multiple agp gart devices access handles */
41 typedef struct amd64_gart_dev_list {
42 ldi_handle_t gart_devhdl;
43 struct amd64_gart_dev_list *next;
44 } amd64_gart_dev_list_t;
45
46 typedef struct amd64_garts_dev {
47 int gart_device_num;
48 amd64_gart_dev_list_t *gart_dev_list_head;
49 } amd64_garts_dev_t;
50
51 /*
52 * AGP target and master device register their config space access
53 * interface here.
54 * In AMD64, gart_device_num is the number of hostbridge (device(1100, 1022))
55 * refer to <<Bios and Kernel Developer's Guide for AMD athlon64 and operton>>
56 */
57 typedef struct agp_registered_dev {
58 amd64_garts_dev_t agprd_cpugarts;
59 ldi_handle_t agprd_targethdl;
60 ldi_handle_t agprd_masterhdl;
61 agp_arc_type_t agprd_arctype; /* system types */
62 } agp_registered_dev_t;
63
64 /*
65 * If the OS have direct mapping support for mapping physical page frames
66 * directly to user address, we use this struct for memory
67 * allocation.
68 */
69 typedef struct agp_pmem_handle {
70 devmap_pmem_cookie_t pmem_cookie;
71 } agp_pmem_handle_t;
72
73 /*
74 * This struct is used for DDI-compliant memory allocations.
75 */
76 typedef struct agp_kmem_handle {
77 ddi_dma_handle_t kmem_handle;
78 ddi_dma_cookie_t kmem_dcookie;
79 uint32_t kmem_cookies_num;
80 caddr_t kmem_kvaddr;
81 size_t kmem_reallen;
82 ddi_acc_handle_t kmem_acchdl;
83 } agp_kmem_handle_t;
84
85 typedef struct keytable_ent {
86 int kte_type; /* agp memory type */
87 int kte_key; /* memory key */
88 uint32_t kte_pgoff; /* aperture offset bound in pages */
89 pgcnt_t kte_pages; /* user-requested size in pages */
90 int kte_bound; /* bound to gart table */
91 void *kte_memhdl; /* agp_kmem or agp_pmem handle */
92 pfn_t *kte_pfnarray; /* page frame numbers allocated */
93 int kte_refcnt; /* reference count */
94 } keytable_ent_t;
95
96 typedef struct key_list {
97 int key_idx;
98 struct key_list *next;
99 } key_list_t;
100
101 /*
102 * for kstat
103 */
104 typedef struct agp_kern_info {
105 uint32_t agpki_mdevid;
106 agp_version_t agpki_mver;
107 uint32_t agpki_mstatus;
108 size_t agpki_presize; /* valid only for IGD, in KB */
109 uint32_t agpki_tdevid;
110 agp_version_t agpki_tver;
111 uint32_t agpki_tstatus;
112 uint64_t agpki_aperbase;
113 uint32_t agpki_apersize; /* in MB */
114 } agp_kern_info_t;
115
116 #ifdef _MULTI_DATAMODEL
117 typedef struct _agp_info32 {
118 agp_version_t agpi32_version;
119 uint32_t agpi32_devid; /* device VID + DID */
120 uint32_t agpi32_mode; /* mode of bridge */
121 uint32_t agpi32_aperbase; /* base of aperture */
122 uint32_t agpi32_apersize; /* in MB */
123 uint32_t agpi32_pgtotal; /* max number of pages */
124 uint32_t agpi32_pgsystem; /* same as pg_total */
125 uint32_t agpi32_pgused; /* pages consumed */
126 } agp_info32_t;
127 #endif /* _MULTI_DATAMODEL */
128
129 struct list_head {
130 struct list_head *next, *prev;
131 struct igd_gtt_seg *gttseg;
132 };
133
134
135 typedef struct agpgart_softstate {
136 dev_info_t *asoft_dip;
137 kmutex_t asoft_instmutex;
138 agp_kern_info_t asoft_info;
139 int asoft_opened; /* 0 not opened, non-0 opened */
140 int asoft_acquired; /* 0 released, 1 acquired */
141 int asoft_agpen; /* 0 disbaled, 1 enabled */
142 pid_t asoft_curpid; /* the process accquiring gart */
143 uint32_t asoft_mode; /* agp mode be set */
144 uint32_t asoft_pgtotal; /* total available pages */
145 uint32_t asoft_pgused; /* pages already used */
146 /* resource handles */
147 ldi_ident_t asoft_li; /* for ldi ops */
148 keytable_ent_t *asoft_table; /* key table for all allocated table */
149 ddi_dma_handle_t gart_dma_handle; /* for GATT table */
150 ddi_acc_handle_t gart_dma_acc_handle; /* for GATT table */
151
152 /* gart table info */
153 uint64_t gart_pbase; /* gart table physical address */
154 caddr_t gart_vbase; /* kernel-vir addr for GATT table */
155 size_t gart_size; /* the size of aperture in megabytes */
156 /* all registered agp device in here */
157 agp_registered_dev_t asoft_devreg;
158 kstat_t *asoft_ksp;
159 struct list_head mapped_list;
160 } agpgart_softstate_t;
161
162 typedef struct agpgart_ctx {
163 offset_t actx_off;
164 agpgart_softstate_t *actx_sc;
165 } agpgart_ctx_t;
166
167 #define KMEMP(p) ((agp_kmem_handle_t *)p)
168 #define PMEMP(p) ((agp_pmem_handle_t *)p)
169
170 int agp_init_kstats(agpgart_softstate_t *);
171 void agp_fini_kstats(agpgart_softstate_t *);
172
173 #endif /* _KERNEL */
174
175 #ifdef __cplusplus
176 }
177 #endif
178
179 #endif /* _SYS_AGPGART_IMPL_H */