1 /* SPDX-License-Identifier: GPL-2.0-only */ !! 1 #ifndef __i386_PCI_H
>> 2 #define __i386_PCI_H
2 3
3 #ifndef __ASM_GENERIC_PCI_H !! 4 #include <linux/config.h>
4 #define __ASM_GENERIC_PCI_H <<
5 5
6 #ifndef PCIBIOS_MIN_IO !! 6 #ifdef __KERNEL__
7 #define PCIBIOS_MIN_IO 0 !! 7 #include <linux/mm.h> /* for struct page */
8 #endif <<
9 8
10 #ifndef PCIBIOS_MIN_MEM !! 9 /* Can be used to override the logic in pci_scan_bus for skipping
11 #define PCIBIOS_MIN_MEM 0 !! 10 already-configured bus numbers - to be used for buggy BIOSes
>> 11 or architectures with incomplete PCI setup by the loader */
>> 12
>> 13 #ifdef CONFIG_PCI
>> 14 extern unsigned int pcibios_assign_all_busses(void);
>> 15 #else
>> 16 #define pcibios_assign_all_busses() 0
12 #endif 17 #endif
13 18
14 #ifndef pcibios_assign_all_busses !! 19 extern unsigned long pci_mem_start;
15 /* For bootloaders that do not initialize the !! 20 #define PCIBIOS_MIN_IO 0x1000
16 #define pcibios_assign_all_busses() 1 !! 21 #define PCIBIOS_MIN_MEM (pci_mem_start)
17 #endif !! 22
>> 23 #define PCIBIOS_MIN_CARDBUS_IO 0x4000
>> 24
>> 25 void pcibios_config_init(void);
>> 26 struct pci_bus * pcibios_scan_root(int bus);
>> 27
>> 28 void pcibios_set_master(struct pci_dev *dev);
>> 29 void pcibios_penalize_isa_irq(int irq);
>> 30 struct irq_routing_table *pcibios_get_irq_routing_table(void);
>> 31 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
>> 32
>> 33 /* Dynamic DMA mapping stuff.
>> 34 * i386 has everything mapped statically.
>> 35 */
>> 36
>> 37 #include <linux/types.h>
>> 38 #include <linux/slab.h>
>> 39 #include <asm/scatterlist.h>
>> 40 #include <linux/string.h>
>> 41 #include <asm/io.h>
>> 42
>> 43 struct pci_dev;
>> 44
>> 45 /* The PCI address space does equal the physical memory
>> 46 * address space. The networking and block device layers use
>> 47 * this boolean for bounce buffer decisions.
>> 48 */
>> 49 #define PCI_DMA_BUS_IS_PHYS (1)
>> 50
>> 51 /* pci_unmap_{page,single} is a nop so... */
>> 52 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
>> 53 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
>> 54 #define pci_unmap_addr(PTR, ADDR_NAME) (0)
>> 55 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
>> 56 #define pci_unmap_len(PTR, LEN_NAME) (0)
>> 57 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
>> 58
>> 59 /* This is always fine. */
>> 60 #define pci_dac_dma_supported(pci_dev, mask) (1)
>> 61
>> 62 static __inline__ dma64_addr_t
>> 63 pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction)
>> 64 {
>> 65 return ((dma64_addr_t) page_to_phys(page) +
>> 66 (dma64_addr_t) offset);
>> 67 }
18 68
19 /* Enable generic resource mapping code in dri !! 69 static __inline__ struct page *
20 #define ARCH_GENERIC_PCI_MMAP_RESOURCE !! 70 pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
>> 71 {
>> 72 return pfn_to_page(dma_addr >> PAGE_SHIFT);
>> 73 }
21 74
22 #ifdef CONFIG_PCI_DOMAINS !! 75 static __inline__ unsigned long
23 static inline int pci_proc_domain(struct pci_b !! 76 pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
24 { 77 {
25 /* always show the domain in /proc */ !! 78 return (dma_addr & ~PAGE_MASK);
26 return 1; <<
27 } 79 }
28 #endif /* CONFIG_PCI_DOMAINS */ <<
29 80
30 #endif /* __ASM_GENERIC_PCI_H */ !! 81 static __inline__ void
>> 82 pci_dac_dma_sync_single(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
>> 83 {
>> 84 flush_write_buffers();
>> 85 }
>> 86
>> 87 #define HAVE_PCI_MMAP
>> 88 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
>> 89 enum pci_mmap_state mmap_state, int write_combine);
>> 90
>> 91 #endif /* __KERNEL__ */
>> 92
>> 93 /* implement the pci_ DMA API in terms of the generic device dma_ one */
>> 94 #include <asm-generic/pci-dma-compat.h>
>> 95
>> 96 /* generic pci stuff */
>> 97 #include <asm-generic/pci.h>
>> 98
>> 99 #endif /* __i386_PCI_H */
31 100
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