Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/asm-alpha/pci.h b/include/asm-alpha/pci.h
new file mode 100644
index 0000000..0c7b57b
--- /dev/null
+++ b/include/asm-alpha/pci.h
@@ -0,0 +1,261 @@
+#ifndef __ALPHA_PCI_H
+#define __ALPHA_PCI_H
+
+#ifdef __KERNEL__
+
+#include <linux/spinlock.h>
+#include <asm/scatterlist.h>
+#include <asm/machvec.h>
+
+/*
+ * The following structure is used to manage multiple PCI busses.
+ */
+
+struct pci_dev;
+struct pci_bus;
+struct resource;
+struct pci_iommu_arena;
+struct page;
+
+/* A controller. Used to manage multiple PCI busses. */
+
+struct pci_controller {
+ struct pci_controller *next;
+ struct pci_bus *bus;
+ struct resource *io_space;
+ struct resource *mem_space;
+
+ /* The following are for reporting to userland. The invariant is
+ that if we report a BWX-capable dense memory, we do not report
+ a sparse memory at all, even if it exists. */
+ unsigned long sparse_mem_base;
+ unsigned long dense_mem_base;
+ unsigned long sparse_io_base;
+ unsigned long dense_io_base;
+
+ /* This one's for the kernel only. It's in KSEG somewhere. */
+ unsigned long config_space_base;
+
+ unsigned int index;
+ /* For compatibility with current (as of July 2003) pciutils
+ and XFree86. Eventually will be removed. */
+ unsigned int need_domain_info;
+
+ struct pci_iommu_arena *sg_pci;
+ struct pci_iommu_arena *sg_isa;
+
+ void *sysdata;
+};
+
+/* Override the logic in pci_scan_bus for skipping already-configured
+ bus numbers. */
+
+#define pcibios_assign_all_busses() 1
+#define pcibios_scan_all_fns(a, b) 0
+
+#define PCIBIOS_MIN_IO alpha_mv.min_io_address
+#define PCIBIOS_MIN_MEM alpha_mv.min_mem_address
+
+extern void pcibios_set_master(struct pci_dev *dev);
+
+extern inline void pcibios_penalize_isa_irq(int irq)
+{
+ /* We don't do dynamic PCI IRQ allocation */
+}
+
+/* IOMMU controls. */
+
+/* The PCI address space does not equal the physical memory address space.
+ The networking and block device layers use this boolean for bounce buffer
+ decisions. */
+#define PCI_DMA_BUS_IS_PHYS 0
+
+/* Allocate and map kernel buffer using consistent mode DMA for PCI
+ device. Returns non-NULL cpu-view pointer to the buffer if
+ successful and sets *DMA_ADDRP to the pci side dma address as well,
+ else DMA_ADDRP is undefined. */
+
+extern void *pci_alloc_consistent(struct pci_dev *, size_t, dma_addr_t *);
+
+/* Free and unmap a consistent DMA buffer. CPU_ADDR and DMA_ADDR must
+ be values that were returned from pci_alloc_consistent. SIZE must
+ be the same as what as passed into pci_alloc_consistent.
+ References to the memory and mappings associated with CPU_ADDR or
+ DMA_ADDR past this call are illegal. */
+
+extern void pci_free_consistent(struct pci_dev *, size_t, void *, dma_addr_t);
+
+/* Map a single buffer of the indicate size for PCI DMA in streaming mode.
+ The 32-bit PCI bus mastering address to use is returned. Once the device
+ is given the dma address, the device owns this memory until either
+ pci_unmap_single or pci_dma_sync_single_for_cpu is performed. */
+
+extern dma_addr_t pci_map_single(struct pci_dev *, void *, size_t, int);
+
+/* Likewise, but for a page instead of an address. */
+extern dma_addr_t pci_map_page(struct pci_dev *, struct page *,
+ unsigned long, size_t, int);
+
+/* Test for pci_map_single or pci_map_page having generated an error. */
+
+static inline int
+pci_dma_mapping_error(dma_addr_t dma_addr)
+{
+ return dma_addr == 0;
+}
+
+/* Unmap a single streaming mode DMA translation. The DMA_ADDR and
+ SIZE must match what was provided for in a previous pci_map_single
+ call. All other usages are undefined. After this call, reads by
+ the cpu to the buffer are guaranteed to see whatever the device
+ wrote there. */
+
+extern void pci_unmap_single(struct pci_dev *, dma_addr_t, size_t, int);
+extern void pci_unmap_page(struct pci_dev *, dma_addr_t, size_t, int);
+
+/* pci_unmap_{single,page} is not a nop, thus... */
+#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
+ dma_addr_t ADDR_NAME;
+#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
+ __u32 LEN_NAME;
+#define pci_unmap_addr(PTR, ADDR_NAME) \
+ ((PTR)->ADDR_NAME)
+#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
+ (((PTR)->ADDR_NAME) = (VAL))
+#define pci_unmap_len(PTR, LEN_NAME) \
+ ((PTR)->LEN_NAME)
+#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
+ (((PTR)->LEN_NAME) = (VAL))
+
+/* Map a set of buffers described by scatterlist in streaming mode for
+ PCI DMA. This is the scatter-gather version of the above
+ pci_map_single interface. Here the scatter gather list elements
+ are each tagged with the appropriate PCI dma address and length.
+ They are obtained via sg_dma_{address,length}(SG).
+
+ NOTE: An implementation may be able to use a smaller number of DMA
+ address/length pairs than there are SG table elements. (for
+ example via virtual mapping capabilities) The routine returns the
+ number of addr/length pairs actually used, at most nents.
+
+ Device ownership issues as mentioned above for pci_map_single are
+ the same here. */
+
+extern int pci_map_sg(struct pci_dev *, struct scatterlist *, int, int);
+
+/* Unmap a set of streaming mode DMA translations. Again, cpu read
+ rules concerning calls here are the same as for pci_unmap_single()
+ above. */
+
+extern void pci_unmap_sg(struct pci_dev *, struct scatterlist *, int, int);
+
+/* Make physical memory consistent for a single streaming mode DMA
+ translation after a transfer and device currently has ownership
+ of the buffer.
+
+ If you perform a pci_map_single() but wish to interrogate the
+ buffer using the cpu, yet do not wish to teardown the PCI dma
+ mapping, you must call this function before doing so. At the next
+ point you give the PCI dma address back to the card, you must first
+ perform a pci_dma_sync_for_device, and then the device again owns
+ the buffer. */
+
+static inline void
+pci_dma_sync_single_for_cpu(struct pci_dev *dev, dma_addr_t dma_addr,
+ long size, int direction)
+{
+ /* Nothing to do. */
+}
+
+static inline void
+pci_dma_sync_single_for_device(struct pci_dev *dev, dma_addr_t dma_addr,
+ size_t size, int direction)
+{
+ /* Nothing to do. */
+}
+
+/* Make physical memory consistent for a set of streaming mode DMA
+ translations after a transfer. The same as pci_dma_sync_single_*
+ but for a scatter-gather list, same rules and usage. */
+
+static inline void
+pci_dma_sync_sg_for_cpu(struct pci_dev *dev, struct scatterlist *sg,
+ int nents, int direction)
+{
+ /* Nothing to do. */
+}
+
+static inline void
+pci_dma_sync_sg_for_device(struct pci_dev *dev, struct scatterlist *sg,
+ int nents, int direction)
+{
+ /* Nothing to do. */
+}
+
+/* Return whether the given PCI device DMA address mask can
+ be supported properly. For example, if your device can
+ only drive the low 24-bits during PCI bus mastering, then
+ you would pass 0x00ffffff as the mask to this function. */
+
+extern int pci_dma_supported(struct pci_dev *hwdev, u64 mask);
+
+/* True if the machine supports DAC addressing, and DEV can
+ make use of it given MASK. */
+extern int pci_dac_dma_supported(struct pci_dev *hwdev, u64 mask);
+
+/* Convert to/from DAC dma address and struct page. */
+extern dma64_addr_t pci_dac_page_to_dma(struct pci_dev *, struct page *,
+ unsigned long, int);
+extern struct page *pci_dac_dma_to_page(struct pci_dev *, dma64_addr_t);
+extern unsigned long pci_dac_dma_to_offset(struct pci_dev *, dma64_addr_t);
+
+static inline void
+pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr,
+ size_t len, int direction)
+{
+ /* Nothing to do. */
+}
+
+static inline void
+pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr,
+ size_t len, int direction)
+{
+ /* Nothing to do. */
+}
+
+/* TODO: integrate with include/asm-generic/pci.h ? */
+static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
+{
+ return channel ? 15 : 14;
+}
+
+extern void pcibios_resource_to_bus(struct pci_dev *, struct pci_bus_region *,
+ struct resource *);
+
+#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
+
+static inline int pci_proc_domain(struct pci_bus *bus)
+{
+ struct pci_controller *hose = bus->sysdata;
+ return hose->need_domain_info;
+}
+
+static inline void
+pcibios_add_platform_entries(struct pci_dev *dev)
+{
+}
+
+struct pci_dev *alpha_gendev_to_pci(struct device *dev);
+
+#endif /* __KERNEL__ */
+
+/* Values for the `which' argument to sys_pciconfig_iobase. */
+#define IOBASE_HOSE 0
+#define IOBASE_SPARSE_MEM 1
+#define IOBASE_DENSE_MEM 2
+#define IOBASE_SPARSE_IO 3
+#define IOBASE_DENSE_IO 4
+#define IOBASE_ROOT_BUS 5
+#define IOBASE_FROM_HOSE 0x10000
+
+#endif /* __ALPHA_PCI_H */