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xes: Update Freescale PCI code to work with 86xx processors
[u-boot] / board / xes / common / fsl_8xxx_pci.c
1 /*
2  * Copyright 2008 Extreme Engineering Solutions, Inc.
3  * Copyright 2007-2008 Freescale Semiconductor, Inc.
4  *
5  * See file CREDITS for list of people who contributed to this
6  * project.
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation; either version 2 of
11  * the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  * MA 02111-1307 USA
22  */
23
24 #include <common.h>
25 #include <pci.h>
26 #include <asm/fsl_pci.h>
27 #include <libfdt.h>
28 #include <fdt_support.h>
29
30 int first_free_busno = 0;
31
32 #ifdef CONFIG_PCI1
33 static struct pci_controller pci1_hose;
34 #endif
35 #ifdef CONFIG_PCIE1
36 static struct pci_controller pcie1_hose;
37 #endif
38 #ifdef CONFIG_PCIE2
39 static struct pci_controller pcie2_hose;
40 #endif
41 #ifdef CONFIG_PCIE3
42 static struct pci_controller pcie3_hose;
43 #endif
44
45 #ifdef CONFIG_MPC8572
46 /* Correlate host/agent POR bits to usable info. Table 4-14 */
47 struct host_agent_cfg_t {
48         uchar pcie_root[3];
49         uchar rio_host;
50 } host_agent_cfg[8] = {
51         {{0, 0, 0}, 0},
52         {{0, 1, 1}, 1},
53         {{1, 0, 1}, 0},
54         {{1, 1, 0}, 1},
55         {{0, 0, 1}, 0},
56         {{0, 1, 0}, 1},
57         {{1, 0, 0}, 0},
58         {{1, 1, 1}, 1}
59 };
60
61 /* Correlate port width POR bits to usable info. Table 4-15 */
62 struct io_port_cfg_t {
63         uchar pcie_width[3];
64         uchar rio_width;
65 } io_port_cfg[16] = {
66         {{0, 0, 0}, 0},
67         {{0, 0, 0}, 0},
68         {{4, 0, 0}, 0},
69         {{4, 4, 0}, 0},
70         {{0, 0, 0}, 0},
71         {{0, 0, 0}, 0},
72         {{0, 0, 0}, 4},
73         {{4, 2, 2}, 0},
74         {{0, 0, 0}, 0},
75         {{0, 0, 0}, 0},
76         {{0, 0, 0}, 0},
77         {{4, 0, 0}, 4},
78         {{4, 0, 0}, 4},
79         {{0, 0, 0}, 4},
80         {{0, 0, 0}, 4},
81         {{8, 0, 0}, 0},
82 };
83 #elif defined CONFIG_MPC8548
84 /* Correlate host/agent POR bits to usable info. Table 4-12 */
85 struct host_agent_cfg_t {
86         uchar pci_host[2];
87         uchar pcie_root[1];
88         uchar rio_host;
89 } host_agent_cfg[8] = {
90         {{1, 1}, {0}, 0},
91         {{1, 1}, {1}, 0},
92         {{1, 1}, {0}, 1},
93         {{0, 0}, {0}, 0}, /* reserved */
94         {{0, 1}, {1}, 0},
95         {{1, 1}, {1}, 0},
96         {{0, 1}, {1}, 1},
97         {{1, 1}, {1}, 1}
98 };
99
100 /* Correlate port width POR bits to usable info. Table 4-13 */
101 struct io_port_cfg_t {
102         uchar pcie_width[1];
103         uchar rio_width;
104 } io_port_cfg[8] = {
105         {{0}, 0},
106         {{0}, 0},
107         {{0}, 0},
108         {{4}, 4},
109         {{4}, 4},
110         {{0}, 4},
111         {{0}, 4},
112         {{8}, 0},
113 };
114 #elif defined CONFIG_MPC86xx
115 /* Correlate host/agent POR bits to usable info. Table 4-17 */
116 struct host_agent_cfg_t {
117         uchar pcie_root[2];
118         uchar rio_host;
119 } host_agent_cfg[8] = {
120         {{0, 0}, 0},
121         {{1, 0}, 1},
122         {{0, 1}, 0},
123         {{1, 1}, 1}
124 };
125
126 /* Correlate port width POR bits to usable info. Table 4-16 */
127 struct io_port_cfg_t {
128         uchar pcie_width[2];
129         uchar rio_width;
130 } io_port_cfg[16] = {
131         {{0, 0}, 0},
132         {{0, 0}, 0},
133         {{8, 0}, 0},
134         {{8, 8}, 0},
135         {{0, 0}, 0},
136         {{8, 0}, 4},
137         {{8, 0}, 4},
138         {{8, 0}, 4},
139         {{0, 0}, 0},
140         {{0, 0}, 4},
141         {{0, 0}, 4},
142         {{0, 0}, 4},
143         {{0, 0}, 0},
144         {{0, 0}, 0},
145         {{0, 8}, 0},
146         {{8, 8}, 0},
147 };
148 #endif
149
150 /*
151  * 85xx and 86xx share naming conventions, but different layout.
152  * Correlate names to CPU-specific values to share common
153  * PCI code.
154  */
155 #if defined(CONFIG_MPC85xx)
156 #define MPC8xxx_DEVDISR_PCIE1           MPC85xx_DEVDISR_PCIE
157 #define MPC8xxx_DEVDISR_PCIE2           MPC85xx_DEVDISR_PCIE2
158 #define MPC8xxx_DEVDISR_PCIE3           MPC85xx_DEVDISR_PCIE3
159 #define MPC8xxx_PORDEVSR_IO_SEL         MPC85xx_PORDEVSR_IO_SEL
160 #define MPC8xxx_PORDEVSR_IO_SEL_SHIFT   MPC85xx_PORDEVSR_IO_SEL_SHIFT
161 #define MPC8xxx_PORBMSR_HA              MPC85xx_PORBMSR_HA
162 #define MPC8xxx_PORBMSR_HA_SHIFT        MPC85xx_PORBMSR_HA_SHIFT
163 #elif defined(CONFIG_MPC86xx)
164 #define MPC8xxx_DEVDISR_PCIE1           MPC86xx_DEVDISR_PCIEX1
165 #define MPC8xxx_DEVDISR_PCIE2           MPC86xx_DEVDISR_PCIEX2
166 #define MPC8xxx_DEVDISR_PCIE3           0       /* 8641 doesn't have PCIe3 */
167 #define MPC8xxx_PORDEVSR_IO_SEL         MPC8641_PORDEVSR_IO_SEL
168 #define MPC8xxx_PORDEVSR_IO_SEL_SHIFT   MPC8641_PORDEVSR_IO_SEL_SHIFT
169 #define MPC8xxx_PORBMSR_HA              MPC8641_PORBMSR_HA
170 #define MPC8xxx_PORBMSR_HA_SHIFT        MPC8641_PORBMSR_HA_SHIFT
171 #endif
172
173 void pci_init_board(void)
174 {
175         struct pci_controller *hose;
176         volatile ccsr_fsl_pci_t *pci;
177         int width;
178         int host;
179 #if defined(CONFIG_MPC85xx)
180         volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
181 #elif defined(CONFIG_MPC86xx)
182         immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
183         volatile ccsr_gur_t *gur = &immap->im_gur;
184 #endif
185         uint devdisr = gur->devdisr;
186         uint io_sel = (gur->pordevsr & MPC8xxx_PORDEVSR_IO_SEL) >>
187                         MPC8xxx_PORDEVSR_IO_SEL_SHIFT;
188         uint host_agent = (gur->porbmsr & MPC8xxx_PORBMSR_HA) >>
189                         MPC8xxx_PORBMSR_HA_SHIFT;
190         struct pci_region *r;
191
192 #ifdef CONFIG_PCI1
193         uint pci_spd_norm = (gur->pordevsr & MPC85xx_PORDEVSR_PCI1_SPD);
194         uint pci_32 = gur->pordevsr & MPC85xx_PORDEVSR_PCI1_PCI32;
195         uint pci_arb = gur->pordevsr & MPC85xx_PORDEVSR_PCI1_ARB;
196         uint pcix = gur->pordevsr & MPC85xx_PORDEVSR_PCI1;
197         uint freq = CONFIG_SYS_CLK_FREQ / 1000 / 1000;
198
199         width = 0; /* Silence compiler warning... */
200         io_sel &= 0xf; /* Silence compiler warning... */
201         pci = (ccsr_fsl_pci_t *) CONFIG_SYS_PCI1_ADDR;
202         hose = &pci1_hose;
203         host = host_agent_cfg[host_agent].pci_host[0];
204         r = hose->regions;
205
206
207         if (!(devdisr & MPC85xx_DEVDISR_PCI1)) {
208                 printf("\n    PCI1: %d bit %s, %s %d MHz, %s, %s\n",
209                         pci_32 ? 32 : 64,
210                         pcix ? "PCIX" : "PCI",
211                         pci_spd_norm ?  ">=" : "<=",
212                         pcix ? freq * 2 : freq,
213                         host ? "host" : "agent",
214                         pci_arb ? "arbiter" : "external-arbiter");
215
216                 /* inbound */
217                 r += fsl_pci_setup_inbound_windows(r);
218
219                 /* outbound memory */
220                 pci_set_region(r++,
221                                 CONFIG_SYS_PCI1_MEM_BASE,
222                                 CONFIG_SYS_PCI1_MEM_PHYS,
223                                 CONFIG_SYS_PCI1_MEM_SIZE,
224                                 PCI_REGION_MEM);
225
226                 /* outbound io */
227                 pci_set_region(r++,
228                                 CONFIG_SYS_PCI1_IO_BASE,
229                                 CONFIG_SYS_PCI1_IO_PHYS,
230                                 CONFIG_SYS_PCI1_IO_SIZE,
231                                 PCI_REGION_IO);
232
233                 hose->region_count = r - hose->regions;
234
235                 hose->first_busno = first_free_busno;
236                 pci_setup_indirect(hose, (int)&pci->cfg_addr,
237                                    (int)&pci->cfg_data);
238
239                 fsl_pci_init(hose);
240
241                 /* Unlock inbound PCI configuration cycles */
242                 if (!host)
243                         fsl_pci_config_unlock(hose);
244
245                 first_free_busno = hose->last_busno + 1;
246                 printf("    PCI1 on bus %02x - %02x\n",
247                         hose->first_busno, hose->last_busno);
248         } else {
249                 printf("    PCI1: disabled\n");
250         }
251 #elif defined CONFIG_MPC8548
252         /* PCI1 not present on MPC8572 */
253         gur->devdisr |= MPC85xx_DEVDISR_PCI1; /* disable */
254 #endif
255 #ifdef CONFIG_PCIE1
256         pci = (ccsr_fsl_pci_t *) CONFIG_SYS_PCIE1_ADDR;
257         hose = &pcie1_hose;
258         host = host_agent_cfg[host_agent].pcie_root[0];
259         width = io_port_cfg[io_sel].pcie_width[0];
260         r = hose->regions;
261
262         if (width && !(devdisr & MPC8xxx_DEVDISR_PCIE1)) {
263                 printf("\n    PCIE1 connected as %s (x%d)",
264                         host ? "Root Complex" : "End Point", width);
265                 if (pci->pme_msg_det) {
266                         pci->pme_msg_det = 0xffffffff;
267                         debug(" with errors.  Clearing.  Now 0x%08x",
268                                 pci->pme_msg_det);
269                 }
270                 printf("\n");
271
272                 /* inbound */
273                 r += fsl_pci_setup_inbound_windows(r);
274
275                 /* outbound memory */
276                 pci_set_region(r++,
277                                 CONFIG_SYS_PCIE1_MEM_BASE,
278                                 CONFIG_SYS_PCIE1_MEM_PHYS,
279                                 CONFIG_SYS_PCIE1_MEM_SIZE,
280                                 PCI_REGION_MEM);
281
282                 /* outbound io */
283                 pci_set_region(r++,
284                                 CONFIG_SYS_PCIE1_IO_BASE,
285                                 CONFIG_SYS_PCIE1_IO_PHYS,
286                                 CONFIG_SYS_PCIE1_IO_SIZE,
287                                 PCI_REGION_IO);
288
289                 hose->region_count = r - hose->regions;
290
291                 hose->first_busno = first_free_busno;
292                 pci_setup_indirect(hose, (int)&pci->cfg_addr,
293                                         (int) &pci->cfg_data);
294
295                 fsl_pci_init(hose);
296
297                 /* Unlock inbound PCI configuration cycles */
298                 if (!host)
299                         fsl_pci_config_unlock(hose);
300
301                 first_free_busno = hose->last_busno + 1;
302                 printf("    PCIE1 on bus %02x - %02x\n",
303                                 hose->first_busno, hose->last_busno);
304         }
305 #else
306         gur->devdisr |= MPC8xxx_DEVDISR_PCIE1; /* disable */
307 #endif /* CONFIG_PCIE1 */
308
309 #ifdef CONFIG_PCIE2
310         pci = (ccsr_fsl_pci_t *) CONFIG_SYS_PCIE2_ADDR;
311         hose = &pcie2_hose;
312         host = host_agent_cfg[host_agent].pcie_root[1];
313         width = io_port_cfg[io_sel].pcie_width[1];
314         r = hose->regions;
315
316         if (width && !(devdisr & MPC8xxx_DEVDISR_PCIE2)) {
317                 printf("\n    PCIE2 connected as %s (x%d)",
318                         host ? "Root Complex" : "End Point", width);
319                 if (pci->pme_msg_det) {
320                         pci->pme_msg_det = 0xffffffff;
321                         debug(" with errors.  Clearing.  Now 0x%08x",
322                                 pci->pme_msg_det);
323                 }
324                 printf("\n");
325
326                 /* inbound */
327                 r += fsl_pci_setup_inbound_windows(r);
328
329                 /* outbound memory */
330                 pci_set_region(r++,
331                                 CONFIG_SYS_PCIE2_MEM_BASE,
332                                 CONFIG_SYS_PCIE2_MEM_PHYS,
333                                 CONFIG_SYS_PCIE2_MEM_SIZE,
334                                 PCI_REGION_MEM);
335
336                 /* outbound io */
337                 pci_set_region(r++,
338                                 CONFIG_SYS_PCIE2_IO_BASE,
339                                 CONFIG_SYS_PCIE2_IO_PHYS,
340                                 CONFIG_SYS_PCIE2_IO_SIZE,
341                                 PCI_REGION_IO);
342
343                 hose->region_count = r - hose->regions;
344
345                 hose->first_busno = first_free_busno;
346                 pci_setup_indirect(hose, (int)&pci->cfg_addr,
347                                         (int)&pci->cfg_data);
348
349                 fsl_pci_init(hose);
350
351                 /* Unlock inbound PCI configuration cycles */
352                 if (!host)
353                         fsl_pci_config_unlock(hose);
354
355                 first_free_busno = hose->last_busno + 1;
356                 printf("    PCIE2 on bus %02x - %02x\n",
357                                 hose->first_busno, hose->last_busno);
358         }
359 #else
360         gur->devdisr |= MPC8xxx_DEVDISR_PCIE2; /* disable */
361 #endif /* CONFIG_PCIE2 */
362
363 #ifdef CONFIG_PCIE3
364         pci = (ccsr_fsl_pci_t *) CONFIG_SYS_PCIE3_ADDR;
365         hose = &pcie3_hose;
366         host = host_agent_cfg[host_agent].pcie_root[2];
367         width = io_port_cfg[io_sel].pcie_width[2];
368         r = hose->regions;
369
370         if (width && !(devdisr & MPC8xxx_DEVDISR_PCIE3)) {
371                 printf("\n    PCIE3 connected as %s (x%d)",
372                         host ? "Root Complex" : "End Point", width);
373                 if (pci->pme_msg_det) {
374                         pci->pme_msg_det = 0xffffffff;
375                         debug(" with errors.  Clearing.  Now 0x%08x",
376                                 pci->pme_msg_det);
377                 }
378                 printf("\n");
379
380                 /* inbound */
381                 r += fsl_pci_setup_inbound_windows(r);
382
383                 /* outbound memory */
384                 pci_set_region(r++,
385                                 CONFIG_SYS_PCIE3_MEM_BASE,
386                                 CONFIG_SYS_PCIE3_MEM_PHYS,
387                                 CONFIG_SYS_PCIE3_MEM_SIZE,
388                                 PCI_REGION_MEM);
389
390                 /* outbound io */
391                 pci_set_region(r++,
392                                 CONFIG_SYS_PCIE3_IO_BASE,
393                                 CONFIG_SYS_PCIE3_IO_PHYS,
394                                 CONFIG_SYS_PCIE3_IO_SIZE,
395                                 PCI_REGION_IO);
396
397                 hose->region_count = r - hose->regions;
398
399                 hose->first_busno = first_free_busno;
400                 pci_setup_indirect(hose, (int)&pci->cfg_addr,
401                                         (int)&pci->cfg_data);
402
403                 fsl_pci_init(hose);
404
405                 /* Unlock inbound PCI configuration cycles */
406                 if (!host)
407                         fsl_pci_config_unlock(hose);
408
409                 first_free_busno = hose->last_busno + 1;
410                 printf("    PCIE3 on bus %02x - %02x\n",
411                                 hose->first_busno, hose->last_busno);
412         }
413 #else
414         gur->devdisr |= MPC8xxx_DEVDISR_PCIE3; /* disable */
415 #endif /* CONFIG_PCIE3 */
416 }
417
418 #if defined(CONFIG_OF_BOARD_SETUP)
419 void ft_board_pci_setup(void *blob, bd_t *bd)
420 {
421         /* TODO - make node name (eg pci0) dynamic */
422 #ifdef CONFIG_PCI1
423         ft_fsl_pci_setup(blob, "pci0", &pci1_hose);
424 #endif
425 #ifdef CONFIG_PCIE1
426         ft_fsl_pci_setup(blob, "pci2", &pcie1_hose);
427 #endif
428 #ifdef CONFIG_PCIE2
429         ft_fsl_pci_setup(blob, "pci1", &pcie2_hose);
430 #endif
431 #ifdef CONFIG_PCIE3
432         ft_fsl_pci_setup(blob, "pci0", &pcie3_hose);
433 #endif
434 }
435 #endif /* CONFIG_OF_BOARD_SETUP */