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)
32 struct pci_controller_info;
35 struct pci_pbm_info *next;
38 /* PCI controller we sit under. */
39 struct pci_controller_info *parent;
41 /* Physical address base of controller registers. */
42 unsigned long controller_regs;
44 /* Physical address base of PBM registers. */
45 unsigned long pbm_regs;
47 /* Physical address of DMA sync register, if any. */
48 unsigned long sync_reg;
50 /* Opaque 32-bit system bus Port ID. */
53 /* Opaque 32-bit handle used for hypervisor calls. */
56 /* Chipset version information. */
58 #define PBM_CHIP_TYPE_SABRE 1
59 #define PBM_CHIP_TYPE_PSYCHO 2
60 #define PBM_CHIP_TYPE_SCHIZO 3
61 #define PBM_CHIP_TYPE_SCHIZO_PLUS 4
62 #define PBM_CHIP_TYPE_TOMATILLO 5
66 /* Name used for top-level resources. */
69 /* OBP specific information. */
70 struct device_node *prom_node;
73 /* PBM I/O and Memory space resources. */
74 struct resource io_space;
75 struct resource mem_space;
77 /* Base of PCI Config space, can be per-PBM or shared. */
78 unsigned long config_space;
80 /* This will be 12 on PCI-E controllers, 8 elsewhere. */
81 unsigned long config_space_reg_bits;
83 /* State of 66MHz capabilities on this PBM. */
92 u32 msiq_first_devino;
102 unsigned long *msi_bitmap;
103 int (*setup_msi_irq)(unsigned int *virt_irq_p, struct pci_dev *pdev,
104 struct msi_desc *entry);
105 void (*teardown_msi_irq)(unsigned int virt_irq, struct pci_dev *pdev);
106 #endif /* !(CONFIG_PCI_MSI) */
108 /* This PBM's streaming buffer. */
111 /* IOMMU state, potentially shared by both PBM segments. */
114 /* Now things for the actual PCI bus probes. */
115 unsigned int pci_first_busno;
116 unsigned int pci_last_busno;
117 struct pci_bus *pci_bus;
118 void (*scan_bus)(struct pci_pbm_info *);
119 struct pci_ops *pci_ops;
122 struct pci_controller_info {
123 /* The PCI bus modules controlled by us. */
124 struct pci_pbm_info pbm_A;
125 struct pci_pbm_info pbm_B;
128 extern struct pci_pbm_info *pci_pbm_root;
129 extern unsigned long pci_memspace_mask;
131 extern int pci_num_pbms;
133 /* PCI bus scanning and fixup support. */
134 extern void pci_iommu_table_init(struct iommu *iommu, int tsbsize,
135 u32 dma_offset, u32 dma_addr_mask);
136 extern void pci_get_pbm_props(struct pci_pbm_info *pbm);
137 extern struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm);
138 extern void pci_determine_mem_io_space(struct pci_pbm_info *pbm);
140 extern int pci_host_bridge_read_pci_cfg(struct pci_bus *bus_dev,
144 extern int pci_host_bridge_write_pci_cfg(struct pci_bus *bus_dev,
149 /* Error reporting support. */
150 extern void pci_scan_for_target_abort(struct pci_pbm_info *, struct pci_bus *);
151 extern void pci_scan_for_master_abort(struct pci_pbm_info *, struct pci_bus *);
152 extern void pci_scan_for_parity_error(struct pci_pbm_info *, struct pci_bus *);
154 /* Configuration space access. */
155 extern void pci_config_read8(u8 *addr, u8 *ret);
156 extern void pci_config_read16(u16 *addr, u16 *ret);
157 extern void pci_config_read32(u32 *addr, u32 *ret);
158 extern void pci_config_write8(u8 *addr, u8 val);
159 extern void pci_config_write16(u16 *addr, u16 val);
160 extern void pci_config_write32(u32 *addr, u32 val);
162 extern struct pci_ops sun4u_pci_ops;
163 extern struct pci_ops sun4v_pci_ops;
165 #endif /* !(PCI_IMPL_H) */