1 /* pci_impl.h: Helper definitions for PCI controller support.
3 * Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net)
9 #include <linux/types.h>
10 #include <linux/spinlock.h>
11 #include <linux/pci.h>
12 #include <linux/msi.h>
15 #include <asm/iommu.h>
17 /* The abstraction used here is that there are PCI controllers,
18 * each with one (Sabre) or two (PSYCHO/SCHIZO) PCI bus modules
19 * underneath. Each PCI bus module uses an IOMMU (shared by both
20 * PBMs of a controller, or per-PBM), and if a streaming buffer
21 * is present, each PCI bus module has it's own. (ie. the IOMMU
22 * might be shared between PBMs, the STC is never shared)
23 * Furthermore, each PCI bus module controls it's own autonomous
27 #define PCI_STC_FLUSHFLAG_INIT(STC) \
28 (*((STC)->strbuf_flushflag) = 0UL)
29 #define PCI_STC_FLUSHFLAG_SET(STC) \
30 (*((STC)->strbuf_flushflag) != 0UL)
34 struct sparc64_msiq_ops {
35 int (*get_head)(struct pci_pbm_info *pbm, unsigned long msiqid,
37 int (*dequeue_msi)(struct pci_pbm_info *pbm, unsigned long msiqid,
38 unsigned long *head, unsigned long *msi);
39 int (*set_head)(struct pci_pbm_info *pbm, unsigned long msiqid,
41 int (*msi_setup)(struct pci_pbm_info *pbm, unsigned long msiqid,
42 unsigned long msi, int is_msi64);
43 int (*msi_teardown)(struct pci_pbm_info *pbm, unsigned long msi);
44 int (*msiq_alloc)(struct pci_pbm_info *pbm);
45 void (*msiq_free)(struct pci_pbm_info *pbm);
46 int (*msiq_build_irq)(struct pci_pbm_info *pbm, unsigned long msiqid,
47 unsigned long devino);
50 extern void sparc64_pbm_msi_init(struct pci_pbm_info *pbm,
51 const struct sparc64_msiq_ops *ops);
53 struct sparc64_msiq_cookie {
54 struct pci_pbm_info *pbm;
59 struct pci_controller_info;
62 struct pci_pbm_info *next;
65 /* PCI controller we sit under. */
66 struct pci_controller_info *parent;
68 /* Physical address base of controller registers. */
69 unsigned long controller_regs;
71 /* Physical address base of PBM registers. */
72 unsigned long pbm_regs;
74 /* Physical address of DMA sync register, if any. */
75 unsigned long sync_reg;
77 /* Opaque 32-bit system bus Port ID. */
80 /* Opaque 32-bit handle used for hypervisor calls. */
83 /* Chipset version information. */
85 #define PBM_CHIP_TYPE_SABRE 1
86 #define PBM_CHIP_TYPE_PSYCHO 2
87 #define PBM_CHIP_TYPE_SCHIZO 3
88 #define PBM_CHIP_TYPE_SCHIZO_PLUS 4
89 #define PBM_CHIP_TYPE_TOMATILLO 5
93 /* Name used for top-level resources. */
96 /* OBP specific information. */
97 struct device_node *prom_node;
100 /* PBM I/O and Memory space resources. */
101 struct resource io_space;
102 struct resource mem_space;
104 /* Base of PCI Config space, can be per-PBM or shared. */
105 unsigned long config_space;
107 /* This will be 12 on PCI-E controllers, 8 elsewhere. */
108 unsigned long config_space_reg_bits;
110 /* State of 66MHz capabilities on this PBM. */
111 int is_66mhz_capable;
114 #ifdef CONFIG_PCI_MSI
119 u32 msiq_first_devino;
121 struct sparc64_msiq_cookie *msiq_irq_cookies;
131 unsigned long *msi_bitmap;
132 unsigned int *msi_irq_table;
133 int (*setup_msi_irq)(unsigned int *virt_irq_p, struct pci_dev *pdev,
134 struct msi_desc *entry);
135 void (*teardown_msi_irq)(unsigned int virt_irq, struct pci_dev *pdev);
136 const struct sparc64_msiq_ops *msi_ops;
137 #endif /* !(CONFIG_PCI_MSI) */
139 /* This PBM's streaming buffer. */
142 /* IOMMU state, potentially shared by both PBM segments. */
145 /* Now things for the actual PCI bus probes. */
146 unsigned int pci_first_busno;
147 unsigned int pci_last_busno;
148 struct pci_bus *pci_bus;
149 void (*scan_bus)(struct pci_pbm_info *);
150 struct pci_ops *pci_ops;
153 struct pci_controller_info {
154 /* The PCI bus modules controlled by us. */
155 struct pci_pbm_info pbm_A;
156 struct pci_pbm_info pbm_B;
159 extern struct pci_pbm_info *pci_pbm_root;
161 extern int pci_num_pbms;
163 /* PCI bus scanning and fixup support. */
164 extern void pci_iommu_table_init(struct iommu *iommu, int tsbsize,
165 u32 dma_offset, u32 dma_addr_mask);
166 extern void pci_get_pbm_props(struct pci_pbm_info *pbm);
167 extern struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm);
168 extern void pci_determine_mem_io_space(struct pci_pbm_info *pbm);
170 extern int pci_host_bridge_read_pci_cfg(struct pci_bus *bus_dev,
174 extern int pci_host_bridge_write_pci_cfg(struct pci_bus *bus_dev,
179 /* Error reporting support. */
180 extern void pci_scan_for_target_abort(struct pci_pbm_info *, struct pci_bus *);
181 extern void pci_scan_for_master_abort(struct pci_pbm_info *, struct pci_bus *);
182 extern void pci_scan_for_parity_error(struct pci_pbm_info *, struct pci_bus *);
184 /* Configuration space access. */
185 extern void pci_config_read8(u8 *addr, u8 *ret);
186 extern void pci_config_read16(u16 *addr, u16 *ret);
187 extern void pci_config_read32(u32 *addr, u32 *ret);
188 extern void pci_config_write8(u8 *addr, u8 val);
189 extern void pci_config_write16(u16 *addr, u16 val);
190 extern void pci_config_write32(u32 *addr, u32 val);
192 extern struct pci_ops sun4u_pci_ops;
193 extern struct pci_ops sun4v_pci_ops;
195 #endif /* !(PCI_IMPL_H) */