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pci_pir.c (11378) pci_pir.c (11524)
1/**************************************************************************
2**
1/**************************************************************************
2**
3** $Id: pcibus.c,v 1.15 1995/09/22 19:10:54 se Exp $
3** $Id: pcibus.c,v 1.16 1995/10/09 21:56:24 se Exp $
4**
5** pci bus subroutines for i386 architecture.
6**
7** FreeBSD
8**
9**-------------------------------------------------------------------------
10**
11** Copyright (c) 1994 Wolfgang Stanglmeier. All rights reserved.

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142
143
144#define CONF1_ADDR_PORT 0x0cf8
145#define CONF1_DATA_PORT 0x0cfc
146
147#define CONF1_ENABLE 0x80000000ul
148#define CONF1_ENABLE_CHK 0x80000000ul
149#define CONF1_ENABLE_CHK1 0xFF000001ul
4**
5** pci bus subroutines for i386 architecture.
6**
7** FreeBSD
8**
9**-------------------------------------------------------------------------
10**
11** Copyright (c) 1994 Wolfgang Stanglmeier. All rights reserved.

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142
143
144#define CONF1_ADDR_PORT 0x0cf8
145#define CONF1_DATA_PORT 0x0cfc
146
147#define CONF1_ENABLE 0x80000000ul
148#define CONF1_ENABLE_CHK 0x80000000ul
149#define CONF1_ENABLE_CHK1 0xFF000001ul
150#define CONF1_ENABLE_MSK1 0x80000000ul
150#define CONF1_ENABLE_MSK1 0x80000001ul
151#define CONF1_ENABLE_RES1 0x80000000ul
152
153#define CONF2_ENABLE_PORT 0x0cf8
154#define CONF2_FORWARD_PORT 0x0cfa
155
156#define CONF2_ENABLE_CHK 0x0e
157#define CONF2_ENABLE_RES 0x0e
158

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176 if (bootverbose)
177 printf ("-- nothing found\n");
178 return 0;
179}
180
181static void
182pcibus_setup (void)
183{
151#define CONF1_ENABLE_RES1 0x80000000ul
152
153#define CONF2_ENABLE_PORT 0x0cf8
154#define CONF2_FORWARD_PORT 0x0cfa
155
156#define CONF2_ENABLE_CHK 0x0e
157#define CONF2_ENABLE_RES 0x0e
158

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176 if (bootverbose)
177 printf ("-- nothing found\n");
178 return 0;
179}
180
181static void
182pcibus_setup (void)
183{
184 unsigned long mode1res,oldval;
185 unsigned char mode2res;
184 unsigned long mode1res,oldval1;
185 unsigned char mode2res,oldval2;
186
186
187 oldval = inl (CONF1_ADDR_PORT);
188 outl (CONF1_ADDR_PORT, CONF1_ENABLE_CHK);
189 outb (CONF2_ENABLE_PORT, CONF2_ENABLE_CHK);
190 mode1res = inl(CONF1_ADDR_PORT);
191 mode2res = inb(CONF2_ENABLE_PORT);
192 outb (CONF2_ENABLE_PORT, 0);
193 outl (CONF1_ADDR_PORT, oldval);
187 oldval1 = inl (CONF1_ADDR_PORT);
194
195 if (bootverbose) {
188
189 if (bootverbose) {
196 printf ("pcibus_setup(1):\tmode1res=0x%08lx (0x%08lx), "
197 "mode2res=0x%02x (0x%02x)\n",
198 mode1res,CONF1_ENABLE_CHK,
199 (int)mode2res,CONF2_ENABLE_CHK);
190 printf ("pcibus_setup(1):\tmode1 addr port (0x0cf8) is 0x%08lx\n", oldval1);
200 }
201
202 /*---------------------------------------
191 }
192
193 /*---------------------------------------
203 ** No PCI, if neither mode1res nor mode2res could be read back
204 **---------------------------------------
205 */
206
207 if ((mode1res != CONF1_ENABLE_CHK) && (mode2res != CONF2_ENABLE_CHK)) {
208 return;
209 }
210
211 /*---------------------------------------
212 ** Assume configuration mechanism 1 for now ...
213 **---------------------------------------
214 */
215
194 ** Assume configuration mechanism 1 for now ...
195 **---------------------------------------
196 */
197
216 pci_mechanism = 1;
217 pci_maxdevice = 32;
198 if ((oldval1 & CONF1_ENABLE) == 0) {
218
199
219 outl (CONF1_ADDR_PORT, CONF1_ENABLE_CHK);
220 outb (CONF1_ADDR_PORT +3, 0);
221 mode1res = inl (CONF1_ADDR_PORT);
222 outl (CONF1_ADDR_PORT, oldval);
200 pci_mechanism = 1;
201 pci_maxdevice = 32;
223
202
224 if (bootverbose)
225 printf ("pcibus_setup(2):\tmode1res=0x%08lx (0x%08lx)\n",
226 mode1res, CONF1_ENABLE_CHK);
203 outl (CONF1_ADDR_PORT, CONF1_ENABLE_CHK);
204 outb (CONF1_ADDR_PORT +3, 0);
205 mode1res = inl (CONF1_ADDR_PORT);
206 outl (CONF1_ADDR_PORT, oldval1);
227
207
228 if (mode1res) {
229 if (pcibus_check())
230 return;
231 };
208 if (bootverbose)
209 printf ("pcibus_setup(1a):\tmode1res=0x%08lx (0x%08lx)\n",
210 mode1res, CONF1_ENABLE_CHK);
232
211
233 outl (CONF1_ADDR_PORT, CONF1_ENABLE_CHK1);
234 outl (CONF1_DATA_PORT, 0);
235 mode1res = inl(CONF1_ADDR_PORT);
236 outl (CONF1_ADDR_PORT, oldval);
212 if (mode1res) {
213 if (pcibus_check())
214 return;
215 };
237
216
238 if (bootverbose)
239 printf ("pcibus_setup(3):\tmode1res=0x%08lx (0x%08lx)\n",
240 mode1res, CONF1_ENABLE_CHK1);
217 outl (CONF1_ADDR_PORT, CONF1_ENABLE_CHK1);
218 mode1res = inl(CONF1_ADDR_PORT);
219 outl (CONF1_ADDR_PORT, oldval1);
241
220
242 if ((mode1res & CONF1_ENABLE_MSK1) == CONF1_ENABLE_RES1) {
243 if (pcibus_check())
244 return;
245 };
221 if (bootverbose)
222 printf ("pcibus_setup(1b):\tmode1res=0x%08lx (0x%08lx)\n",
223 mode1res, CONF1_ENABLE_CHK1);
246
224
225 if ((mode1res & CONF1_ENABLE_MSK1) == CONF1_ENABLE_RES1) {
226 if (pcibus_check())
227 return;
228 };
229 }
230
247 /*---------------------------------------
248 ** Try configuration mechanism 2 ...
249 **---------------------------------------
250 */
251
231 /*---------------------------------------
232 ** Try configuration mechanism 2 ...
233 **---------------------------------------
234 */
235
252 if (bootverbose)
253 printf ("pcibus_setup(4):\tnow trying mechanism 2\n");
236 oldval2 = inb (CONF2_ENABLE_PORT);
254
237
255 pci_mechanism = 2;
256 pci_maxdevice = 16;
238 if (bootverbose) {
239 printf ("pcibus_setup(2):\tmode 2 enable port (0x0cf8) is 0x%02x\n", oldval2);
240 }
257
241
258 if (pcibus_check())
259 return;
242 if ((oldval2 & 0xf0) == 0) {
260
243
244 pci_mechanism = 2;
245 pci_maxdevice = 16;
246
247 outb (CONF2_ENABLE_PORT, CONF2_ENABLE_CHK);
248 mode2res = inb(CONF2_ENABLE_PORT);
249 outb (CONF2_ENABLE_PORT, oldval2);
250
251 if (bootverbose)
252 printf ("pcibus_setup(2a):\tmode2res=0x%02x (0x%02x)\n",
253 mode2res, CONF2_ENABLE_CHK);
254
255 if (mode2res == CONF2_ENABLE_RES) {
256 if (bootverbose)
257 printf ("pcibus_setup(2a):\tnow trying mechanism 2\n");
258
259 if (pcibus_check())
260 return;
261 }
262 }
263
261 /*---------------------------------------
262 ** No PCI bus host bridge found
263 **---------------------------------------
264 */
265
266 pci_mechanism = 0;
267 pci_maxdevice = 0;
268}

--- 226 unchanged lines hidden --- 		264 /*---------------------------------------
265 ** No PCI bus host bridge found
266 **---------------------------------------
267 */
268
269 pci_mechanism = 0;
270 pci_maxdevice = 0;
271}

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