[SPARC64]: Kill asm-sparc64/pbm.h
[linux-2.6] / arch / sparc64 / kernel / pci_common.c
1 /* pci_common.c: PCI controller common support.
2  *
3  * Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net)
4  */
5
6 #include <linux/string.h>
7 #include <linux/slab.h>
8 #include <linux/init.h>
9 #include <linux/pci.h>
10 #include <linux/device.h>
11
12 #include <asm/prom.h>
13 #include <asm/of_device.h>
14 #include <asm/oplib.h>
15
16 #include "pci_impl.h"
17
18 void pci_get_pbm_props(struct pci_pbm_info *pbm)
19 {
20         const u32 *val = of_get_property(pbm->prom_node, "bus-range", NULL);
21
22         pbm->pci_first_busno = val[0];
23         pbm->pci_last_busno = val[1];
24
25         val = of_get_property(pbm->prom_node, "ino-bitmap", NULL);
26         if (val) {
27                 pbm->ino_bitmap = (((u64)val[1] << 32UL) |
28                                    ((u64)val[0] <<  0UL));
29         }
30 }
31
32 static void pci_register_legacy_regions(struct resource *io_res,
33                                         struct resource *mem_res)
34 {
35         struct resource *p;
36
37         /* VGA Video RAM. */
38         p = kzalloc(sizeof(*p), GFP_KERNEL);
39         if (!p)
40                 return;
41
42         p->name = "Video RAM area";
43         p->start = mem_res->start + 0xa0000UL;
44         p->end = p->start + 0x1ffffUL;
45         p->flags = IORESOURCE_BUSY;
46         request_resource(mem_res, p);
47
48         p = kzalloc(sizeof(*p), GFP_KERNEL);
49         if (!p)
50                 return;
51
52         p->name = "System ROM";
53         p->start = mem_res->start + 0xf0000UL;
54         p->end = p->start + 0xffffUL;
55         p->flags = IORESOURCE_BUSY;
56         request_resource(mem_res, p);
57
58         p = kzalloc(sizeof(*p), GFP_KERNEL);
59         if (!p)
60                 return;
61
62         p->name = "Video ROM";
63         p->start = mem_res->start + 0xc0000UL;
64         p->end = p->start + 0x7fffUL;
65         p->flags = IORESOURCE_BUSY;
66         request_resource(mem_res, p);
67 }
68
69 static void pci_register_iommu_region(struct pci_pbm_info *pbm)
70 {
71         const u32 *vdma = of_get_property(pbm->prom_node, "virtual-dma", NULL);
72
73         if (vdma) {
74                 struct resource *rp = kmalloc(sizeof(*rp), GFP_KERNEL);
75
76                 if (!rp) {
77                         prom_printf("Cannot allocate IOMMU resource.\n");
78                         prom_halt();
79                 }
80                 rp->name = "IOMMU";
81                 rp->start = pbm->mem_space.start + (unsigned long) vdma[0];
82                 rp->end = rp->start + (unsigned long) vdma[1] - 1UL;
83                 rp->flags = IORESOURCE_BUSY;
84                 request_resource(&pbm->mem_space, rp);
85         }
86 }
87
88 void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
89 {
90         const struct linux_prom_pci_ranges *pbm_ranges;
91         int i, saw_mem, saw_io;
92         int num_pbm_ranges;
93
94         saw_mem = saw_io = 0;
95         pbm_ranges = of_get_property(pbm->prom_node, "ranges", &i);
96         num_pbm_ranges = i / sizeof(*pbm_ranges);
97
98         for (i = 0; i < num_pbm_ranges; i++) {
99                 const struct linux_prom_pci_ranges *pr = &pbm_ranges[i];
100                 unsigned long a;
101                 u32 parent_phys_hi, parent_phys_lo;
102                 int type;
103
104                 parent_phys_hi = pr->parent_phys_hi;
105                 parent_phys_lo = pr->parent_phys_lo;
106                 if (tlb_type == hypervisor)
107                         parent_phys_hi &= 0x0fffffff;
108
109                 type = (pr->child_phys_hi >> 24) & 0x3;
110                 a = (((unsigned long)parent_phys_hi << 32UL) |
111                      ((unsigned long)parent_phys_lo  <<  0UL));
112
113                 switch (type) {
114                 case 0:
115                         /* PCI config space, 16MB */
116                         pbm->config_space = a;
117                         break;
118
119                 case 1:
120                         /* 16-bit IO space, 16MB */
121                         pbm->io_space.start = a;
122                         pbm->io_space.end = a + ((16UL*1024UL*1024UL) - 1UL);
123                         pbm->io_space.flags = IORESOURCE_IO;
124                         saw_io = 1;
125                         break;
126
127                 case 2:
128                         /* 32-bit MEM space, 2GB */
129                         pbm->mem_space.start = a;
130                         pbm->mem_space.end = a + (0x80000000UL - 1UL);
131                         pbm->mem_space.flags = IORESOURCE_MEM;
132                         saw_mem = 1;
133                         break;
134
135                 case 3:
136                         /* XXX 64-bit MEM handling XXX */
137
138                 default:
139                         break;
140                 };
141         }
142
143         if (!saw_io || !saw_mem) {
144                 prom_printf("%s: Fatal error, missing %s PBM range.\n",
145                             pbm->name,
146                             (!saw_io ? "IO" : "MEM"));
147                 prom_halt();
148         }
149
150         printk("%s: PCI IO[%lx] MEM[%lx]\n",
151                pbm->name,
152                pbm->io_space.start,
153                pbm->mem_space.start);
154
155         pbm->io_space.name = pbm->mem_space.name = pbm->name;
156
157         request_resource(&ioport_resource, &pbm->io_space);
158         request_resource(&iomem_resource, &pbm->mem_space);
159
160         pci_register_legacy_regions(&pbm->io_space,
161                                     &pbm->mem_space);
162         pci_register_iommu_region(pbm);
163 }
164
165 /* Generic helper routines for PCI error reporting. */
166 void pci_scan_for_target_abort(struct pci_pbm_info *pbm,
167                                struct pci_bus *pbus)
168 {
169         struct pci_dev *pdev;
170         struct pci_bus *bus;
171
172         list_for_each_entry(pdev, &pbus->devices, bus_list) {
173                 u16 status, error_bits;
174
175                 pci_read_config_word(pdev, PCI_STATUS, &status);
176                 error_bits =
177                         (status & (PCI_STATUS_SIG_TARGET_ABORT |
178                                    PCI_STATUS_REC_TARGET_ABORT));
179                 if (error_bits) {
180                         pci_write_config_word(pdev, PCI_STATUS, error_bits);
181                         printk("%s: Device %s saw Target Abort [%016x]\n",
182                                pbm->name, pci_name(pdev), status);
183                 }
184         }
185
186         list_for_each_entry(bus, &pbus->children, node)
187                 pci_scan_for_target_abort(pbm, bus);
188 }
189
190 void pci_scan_for_master_abort(struct pci_pbm_info *pbm,
191                                struct pci_bus *pbus)
192 {
193         struct pci_dev *pdev;
194         struct pci_bus *bus;
195
196         list_for_each_entry(pdev, &pbus->devices, bus_list) {
197                 u16 status, error_bits;
198
199                 pci_read_config_word(pdev, PCI_STATUS, &status);
200                 error_bits =
201                         (status & (PCI_STATUS_REC_MASTER_ABORT));
202                 if (error_bits) {
203                         pci_write_config_word(pdev, PCI_STATUS, error_bits);
204                         printk("%s: Device %s received Master Abort [%016x]\n",
205                                pbm->name, pci_name(pdev), status);
206                 }
207         }
208
209         list_for_each_entry(bus, &pbus->children, node)
210                 pci_scan_for_master_abort(pbm, bus);
211 }
212
213 void pci_scan_for_parity_error(struct pci_pbm_info *pbm,
214                                struct pci_bus *pbus)
215 {
216         struct pci_dev *pdev;
217         struct pci_bus *bus;
218
219         list_for_each_entry(pdev, &pbus->devices, bus_list) {
220                 u16 status, error_bits;
221
222                 pci_read_config_word(pdev, PCI_STATUS, &status);
223                 error_bits =
224                         (status & (PCI_STATUS_PARITY |
225                                    PCI_STATUS_DETECTED_PARITY));
226                 if (error_bits) {
227                         pci_write_config_word(pdev, PCI_STATUS, error_bits);
228                         printk("%s: Device %s saw Parity Error [%016x]\n",
229                                pbm->name, pci_name(pdev), status);
230                 }
231         }
232
233         list_for_each_entry(bus, &pbus->children, node)
234                 pci_scan_for_parity_error(pbm, bus);
235 }