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9fd8b647 | 1 | /* pci_impl.h: Helper definitions for PCI controller support. |
1da177e4 | 2 | * |
9fd8b647 | 3 | * Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net) |
1da177e4 LT |
4 | */ |
5 | ||
6 | #ifndef PCI_IMPL_H | |
7 | #define PCI_IMPL_H | |
8 | ||
9 | #include <linux/types.h> | |
10 | #include <linux/spinlock.h> | |
c57c2ffb DM |
11 | #include <linux/pci.h> |
12 | #include <linux/msi.h> | |
22fecbae | 13 | #include <linux/of_device.h> |
1da177e4 | 14 | #include <asm/io.h> |
de8d28b1 | 15 | #include <asm/prom.h> |
c57c2ffb DM |
16 | #include <asm/iommu.h> |
17 | ||
18 | /* The abstraction used here is that there are PCI controllers, | |
19 | * each with one (Sabre) or two (PSYCHO/SCHIZO) PCI bus modules | |
20 | * underneath. Each PCI bus module uses an IOMMU (shared by both | |
21 | * PBMs of a controller, or per-PBM), and if a streaming buffer | |
22 | * is present, each PCI bus module has it's own. (ie. the IOMMU | |
23 | * might be shared between PBMs, the STC is never shared) | |
24 | * Furthermore, each PCI bus module controls it's own autonomous | |
25 | * PCI bus. | |
26 | */ | |
27 | ||
28 | #define PCI_STC_FLUSHFLAG_INIT(STC) \ | |
29 | (*((STC)->strbuf_flushflag) = 0UL) | |
30 | #define PCI_STC_FLUSHFLAG_SET(STC) \ | |
31 | (*((STC)->strbuf_flushflag) != 0UL) | |
32 | ||
759f89e0 DM |
33 | #ifdef CONFIG_PCI_MSI |
34 | struct pci_pbm_info; | |
35 | struct sparc64_msiq_ops { | |
36 | int (*get_head)(struct pci_pbm_info *pbm, unsigned long msiqid, | |
37 | unsigned long *head); | |
38 | int (*dequeue_msi)(struct pci_pbm_info *pbm, unsigned long msiqid, | |
39 | unsigned long *head, unsigned long *msi); | |
40 | int (*set_head)(struct pci_pbm_info *pbm, unsigned long msiqid, | |
41 | unsigned long head); | |
42 | int (*msi_setup)(struct pci_pbm_info *pbm, unsigned long msiqid, | |
43 | unsigned long msi, int is_msi64); | |
44 | int (*msi_teardown)(struct pci_pbm_info *pbm, unsigned long msi); | |
45 | int (*msiq_alloc)(struct pci_pbm_info *pbm); | |
46 | void (*msiq_free)(struct pci_pbm_info *pbm); | |
47 | int (*msiq_build_irq)(struct pci_pbm_info *pbm, unsigned long msiqid, | |
48 | unsigned long devino); | |
49 | }; | |
50 | ||
51 | extern void sparc64_pbm_msi_init(struct pci_pbm_info *pbm, | |
52 | const struct sparc64_msiq_ops *ops); | |
53 | ||
54 | struct sparc64_msiq_cookie { | |
55 | struct pci_pbm_info *pbm; | |
56 | unsigned long msiqid; | |
57 | }; | |
58 | #endif | |
59 | ||
c57c2ffb DM |
60 | struct pci_pbm_info { |
61 | struct pci_pbm_info *next; | |
d3ae4b5b | 62 | struct pci_pbm_info *sibling; |
c57c2ffb DM |
63 | int index; |
64 | ||
c57c2ffb DM |
65 | /* Physical address base of controller registers. */ |
66 | unsigned long controller_regs; | |
67 | ||
68 | /* Physical address base of PBM registers. */ | |
69 | unsigned long pbm_regs; | |
70 | ||
71 | /* Physical address of DMA sync register, if any. */ | |
72 | unsigned long sync_reg; | |
73 | ||
74 | /* Opaque 32-bit system bus Port ID. */ | |
75 | u32 portid; | |
76 | ||
77 | /* Opaque 32-bit handle used for hypervisor calls. */ | |
78 | u32 devhandle; | |
79 | ||
80 | /* Chipset version information. */ | |
81 | int chip_type; | |
82 | #define PBM_CHIP_TYPE_SABRE 1 | |
83 | #define PBM_CHIP_TYPE_PSYCHO 2 | |
84 | #define PBM_CHIP_TYPE_SCHIZO 3 | |
85 | #define PBM_CHIP_TYPE_SCHIZO_PLUS 4 | |
86 | #define PBM_CHIP_TYPE_TOMATILLO 5 | |
87 | int chip_version; | |
88 | int chip_revision; | |
89 | ||
90 | /* Name used for top-level resources. */ | |
91 | char *name; | |
92 | ||
93 | /* OBP specific information. */ | |
22fecbae | 94 | struct of_device *op; |
c57c2ffb DM |
95 | u64 ino_bitmap; |
96 | ||
97 | /* PBM I/O and Memory space resources. */ | |
98 | struct resource io_space; | |
99 | struct resource mem_space; | |
100 | ||
101 | /* Base of PCI Config space, can be per-PBM or shared. */ | |
102 | unsigned long config_space; | |
103 | ||
ca3dd88e DM |
104 | /* This will be 12 on PCI-E controllers, 8 elsewhere. */ |
105 | unsigned long config_space_reg_bits; | |
106 | ||
d3ae4b5b DM |
107 | unsigned long pci_afsr; |
108 | unsigned long pci_afar; | |
109 | unsigned long pci_csr; | |
110 | ||
c57c2ffb DM |
111 | /* State of 66MHz capabilities on this PBM. */ |
112 | int is_66mhz_capable; | |
113 | int all_devs_66mhz; | |
114 | ||
115 | #ifdef CONFIG_PCI_MSI | |
116 | /* MSI info. */ | |
117 | u32 msiq_num; | |
118 | u32 msiq_ent_count; | |
119 | u32 msiq_first; | |
120 | u32 msiq_first_devino; | |
759f89e0 DM |
121 | u32 msiq_rotor; |
122 | struct sparc64_msiq_cookie *msiq_irq_cookies; | |
c57c2ffb DM |
123 | u32 msi_num; |
124 | u32 msi_first; | |
125 | u32 msi_data_mask; | |
126 | u32 msix_data_width; | |
127 | u64 msi32_start; | |
128 | u64 msi64_start; | |
129 | u32 msi32_len; | |
130 | u32 msi64_len; | |
131 | void *msi_queues; | |
132 | unsigned long *msi_bitmap; | |
759f89e0 | 133 | unsigned int *msi_irq_table; |
c57c2ffb DM |
134 | int (*setup_msi_irq)(unsigned int *virt_irq_p, struct pci_dev *pdev, |
135 | struct msi_desc *entry); | |
136 | void (*teardown_msi_irq)(unsigned int virt_irq, struct pci_dev *pdev); | |
759f89e0 | 137 | const struct sparc64_msiq_ops *msi_ops; |
c57c2ffb DM |
138 | #endif /* !(CONFIG_PCI_MSI) */ |
139 | ||
140 | /* This PBM's streaming buffer. */ | |
141 | struct strbuf stc; | |
142 | ||
143 | /* IOMMU state, potentially shared by both PBM segments. */ | |
144 | struct iommu *iommu; | |
145 | ||
146 | /* Now things for the actual PCI bus probes. */ | |
147 | unsigned int pci_first_busno; | |
148 | unsigned int pci_last_busno; | |
149 | struct pci_bus *pci_bus; | |
c57c2ffb | 150 | struct pci_ops *pci_ops; |
c1b1a5f1 DM |
151 | |
152 | int numa_node; | |
c57c2ffb DM |
153 | }; |
154 | ||
34768bc8 | 155 | extern struct pci_pbm_info *pci_pbm_root; |
1da177e4 | 156 | |
6c108f12 | 157 | extern int pci_num_pbms; |
1da177e4 LT |
158 | |
159 | /* PCI bus scanning and fixup support. */ | |
cfa0652c | 160 | extern void pci_get_pbm_props(struct pci_pbm_info *pbm); |
7cc288ad DM |
161 | extern struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm, |
162 | struct device *parent); | |
9fd8b647 | 163 | extern void pci_determine_mem_io_space(struct pci_pbm_info *pbm); |
1da177e4 LT |
164 | |
165 | /* Error reporting support. */ | |
6c108f12 DM |
166 | extern void pci_scan_for_target_abort(struct pci_pbm_info *, struct pci_bus *); |
167 | extern void pci_scan_for_master_abort(struct pci_pbm_info *, struct pci_bus *); | |
168 | extern void pci_scan_for_parity_error(struct pci_pbm_info *, struct pci_bus *); | |
1da177e4 LT |
169 | |
170 | /* Configuration space access. */ | |
171 | extern void pci_config_read8(u8 *addr, u8 *ret); | |
172 | extern void pci_config_read16(u16 *addr, u16 *ret); | |
173 | extern void pci_config_read32(u32 *addr, u32 *ret); | |
174 | extern void pci_config_write8(u8 *addr, u8 val); | |
175 | extern void pci_config_write16(u16 *addr, u16 val); | |
176 | extern void pci_config_write32(u32 *addr, u32 val); | |
177 | ||
ca3dd88e DM |
178 | extern struct pci_ops sun4u_pci_ops; |
179 | extern struct pci_ops sun4v_pci_ops; | |
180 | ||
77d10d0e DM |
181 | extern volatile int pci_poke_in_progress; |
182 | extern volatile int pci_poke_cpu; | |
183 | extern volatile int pci_poke_faulted; | |
184 | ||
1da177e4 | 185 | #endif /* !(PCI_IMPL_H) */ |