gx_regacc.c revision f29dbc25 
1/* Copyright (c) 2003-2005 Advanced Micro Devices, Inc.
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to
5 * deal in the Software without restriction, including without limitation the
6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
7 * sell copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
9 *
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
19 * IN THE SOFTWARE.
20 *
21 * Neither the name of the Advanced Micro Devices, Inc. nor the names of its
22 * contributors may be used to endorse or promote products derived from this
23 * software without specific prior written permission.
24 * */
25
26/*
27 * This is the main file used to add Durango graphics support to a software
28 * project.  The main reason to have a single file include the other files
29 * is that it centralizes the location of the compiler options.  This file
30 * should be tuned for a specific implementation, and then modified as needed
31 * for new Durango releases.  The releases.txt file indicates any updates to
32 * this main file, such as a new definition for a new hardware platform.
33 *
34 * In other words, this file should be copied from the Durango source files
35 * once when a software project starts, and then maintained as necessary.
36 * It should not be recopied with new versions of Durango unless the
37 * developer is willing to tune the file again for the specific project.
38 * */
39
40#ifdef HAVE_CONFIG_H
41#include "config.h"
42#endif
43
44#include "gfx_rtns.h"
45#include "gfx_defs.h"
46#include "gfx_regs.h"
47
48#define GU2_WAIT_PENDING	\
49		while(READ_GP32(MGP_BLT_STATUS) & MGP_BS_BLT_PENDING)
50#define GU2_WAIT_HALF_EMPTY \
51		while(!(READ_GP32(MGP_BLT_STATUS) & MGP_BS_HALF_EMPTY))
52
53extern unsigned long gu2_pitch;
54extern unsigned long gu2_xshift;
55extern unsigned short GFXpatternFlags;
56extern unsigned long gu2_rop32;
57extern unsigned short gu2_blt_mode;
58
59void gfx_write_reg8(unsigned long offset, unsigned char value);
60void gfx_write_reg16(unsigned long offset, unsigned short value);
61void gfx_write_reg32(unsigned long offset, unsigned long value);
62unsigned short gfx_read_reg16(unsigned long offset);
63unsigned long gfx_read_reg32(unsigned long offset);
64void gfx_write_vid32(unsigned long offset, unsigned long value);
65unsigned long gfx_read_vid32(unsigned long offset);
66unsigned long gfx_read_vip32(unsigned long offset);
67void gfx_write_vip32(unsigned long offset, unsigned long value);
68void gfx_mono_bitmap_to_screen_blt_swp(unsigned short srcx,
69    unsigned short srcy,
70    unsigned short dstx,
71    unsigned short dsty,
72    unsigned short width,
73    unsigned short height, unsigned char *data, short pitch);
74unsigned int GetVideoMemSize(void);
75
76/* ROUTINES added accessing hardware reg */
77void
78gfx_write_reg8(unsigned long offset, unsigned char value)
79{
80    WRITE_REG8(offset, value);
81}
82
83void
84gfx_write_reg16(unsigned long offset, unsigned short value)
85{
86    WRITE_REG16(offset, value);
87}
88
89void
90gfx_write_reg32(unsigned long offset, unsigned long value)
91{
92    WRITE_REG32(offset, value);
93}
94unsigned short
95gfx_read_reg16(unsigned long offset)
96{
97    unsigned short value;
98
99    value = READ_REG16(offset);
100    return value;
101}
102unsigned long
103gfx_read_reg32(unsigned long offset)
104{
105    unsigned long value;
106
107    value = READ_REG32(offset);
108    return value;
109}
110
111void
112gfx_write_vid32(unsigned long offset, unsigned long value)
113{
114    WRITE_VID32(offset, value);
115}
116unsigned long
117gfx_read_vid32(unsigned long offset)
118{
119    unsigned long value;
120
121    value = READ_VID32(offset);
122    return value;
123}
124
125/*Addition for the VIP code */
126unsigned long
127gfx_read_vip32(unsigned long offset)
128{
129    unsigned long value;
130
131    value = READ_VIP32(offset);
132    return value;
133}
134
135void
136gfx_write_vip32(unsigned long offset, unsigned long value)
137{
138    WRITE_VIP32(offset, value);
139}
140
141#define SWAP_BITS_IN_BYTES(v) 								\
142 (((0x01010101 & (v)) << 7) | ((0x02020202 & (v)) << 5) | 	\
143  ((0x04040404 & (v)) << 3) | ((0x08080808 & (v)) << 1) | 	\
144  ((0x10101010 & (v)) >> 1) | ((0x20202020 & (v)) >> 3) | 	\
145  ((0x40404040 & (v)) >> 5) | ((0x80808080 & (v)) >> 7))
146
147#define WRITE_GPREG_STRING32_SWP(regoffset, dwords, 					\
148				counter, array, array_offset, temp)						\
149{                                                           			\
150	temp = (unsigned long)array + (array_offset);           			\
151	for (counter = 0; counter < dwords; counter++)          			\
152		WRITE_GP32 (regoffset, 											\
153			SWAP_BITS_IN_BYTES(*((unsigned long *)temp + counter)));	\
154}
155
156void
157gfx_mono_bitmap_to_screen_blt_swp(unsigned short srcx, unsigned short srcy,
158    unsigned short dstx, unsigned short dsty,
159    unsigned short width, unsigned short height,
160    unsigned char *data, short pitch)
161{
162    unsigned long dstoffset, size, bytes;
163    unsigned long offset, temp_offset, temp1 = 0, temp2 = 0;
164    unsigned long i, j = 0, fifo_lines, dwords_extra, bytes_extra;
165    unsigned long shift = 0;
166
167    size = (((unsigned long)width) << 16) | height;
168
169    /* CALCULATE STARTING OFFSETS */
170
171    offset = (unsigned long)srcy *pitch + ((unsigned long)srcx >> 3);
172
173    dstoffset = (unsigned long)dsty *gu2_pitch +
174	(((unsigned long)dstx) << gu2_xshift);
175
176    /* CHECK IF PATTERN ORIGINS NEED TO BE SET */
177
178    if (GFXpatternFlags) {
179	/* COMBINE X AND Y PATTERN ORIGINS WITH OFFSET */
180
181	dstoffset |= ((unsigned long)(dstx & 7)) << 26;
182	dstoffset |= ((unsigned long)(dsty & 7)) << 29;
183    }
184
185    bytes = ((srcx & 7) + width + 7) >> 3;
186    fifo_lines = bytes >> 5;
187    dwords_extra = (bytes & 0x0000001Cl) >> 2;
188    bytes_extra = bytes & 0x00000003l;
189
190    /* POLL UNTIL ABLE TO WRITE TO THE REGISTERS */
191    /* Put off poll for as long as possible (do most calculations first).   */
192    /* The source offset is always 0 since we allow misaligned dword reads. */
193    /* Need to wait for busy instead of pending, since hardware clears      */
194    /* the host data FIFO at the beginning of a BLT.                        */
195
196    GU2_WAIT_PENDING;
197    WRITE_GP32(MGP_RASTER_MODE, gu2_rop32);
198    WRITE_GP32(MGP_SRC_OFFSET, ((unsigned long)srcx & 7) << 26);
199    WRITE_GP32(MGP_DST_OFFSET, dstoffset);
200    WRITE_GP32(MGP_WID_HEIGHT, size);
201    WRITE_GP32(MGP_STRIDE, gu2_pitch);
202    WRITE_GP16(MGP_BLT_MODE,
203	gu2_blt_mode | MGP_BM_SRC_HOST | MGP_BM_SRC_MONO);
204
205    /* WAIT FOR BLT TO BE LATCHED */
206
207    GU2_WAIT_PENDING;
208
209    /* WRITE ALL OF THE DATA TO THE HOST SOURCE REGISTER */
210
211    while (height--) {
212	temp_offset = offset;
213
214	/* WRITE ALL FULL FIFO LINES */
215
216	for (i = 0; i < fifo_lines; i++) {
217	    GU2_WAIT_HALF_EMPTY;
218	    WRITE_GPREG_STRING32_SWP(MGP_HST_SOURCE, 8, j, data, temp_offset,
219		temp1);
220	    temp_offset += 32;
221	}
222
223	/* WRITE ALL FULL DWORDS */
224
225	GU2_WAIT_HALF_EMPTY;
226	if (dwords_extra) {
227	    WRITE_GPREG_STRING32_SWP(MGP_HST_SOURCE, dwords_extra, i, data,
228		temp_offset, temp1);
229	    temp_offset += (dwords_extra << 2);
230	}
231
232	/* WRITE REMAINING BYTES */
233
234	shift = 0;
235	if (bytes_extra)
236	    WRITE_GPREG_STRING8(MGP_HST_SOURCE, bytes_extra, shift, i, data,
237		temp_offset, temp1, temp2);
238
239	offset += pitch;
240    }
241}
242
243unsigned int
244GetVideoMemSize(void)
245{
246    unsigned int graphicsMemBaseAddr;
247    unsigned int totalMem = 0;
248    int i;
249    unsigned int graphicsMemMask, graphicsMemShift;
250    unsigned int mcBankCfg = gfx_read_reg32(0x8408);
251    unsigned int dimmShift = 4;
252
253    /* Read graphics base address. */
254
255    graphicsMemBaseAddr = gfx_read_reg32(0x8414);
256
257    graphicsMemMask = 0x7FF;
258    graphicsMemShift = 19;
259
260    /* Calculate total memory size for GXm. */
261
262    for (i = 0; i < 2; i++) {
263	if (((mcBankCfg >> dimmShift) & 0x7) != 0x7) {
264	    switch ((mcBankCfg >> (dimmShift + 4)) & 0x7) {
265	    case 0:
266		totalMem += 0x400000;
267		break;
268	    case 1:
269		totalMem += 0x800000;
270		break;
271	    case 2:
272		totalMem += 0x1000000;
273		break;
274	    case 3:
275		totalMem += 0x2000000;
276		break;
277	    case 4:
278		totalMem += 0x4000000;
279		break;
280	    case 5:
281		totalMem += 0x8000000;
282		break;
283	    case 6:
284		totalMem += 0x10000000;
285		break;
286	    case 7:
287		totalMem += 0x20000000;
288		break;
289	    default:
290		break;
291	    }
292	}
293	dimmShift += 16;
294    }
295
296    /* Calculate graphics memory base address */
297
298    graphicsMemBaseAddr &= graphicsMemMask;
299    graphicsMemBaseAddr <<= graphicsMemShift;
300
301    return (totalMem - graphicsMemBaseAddr);
302}
303
304/* END OF FILE */
305