arch/mips/include/asm/octeon/pci-octeon.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2005-2009 Cavium Networks
   7  */
   8
   9 #ifndef __PCI_OCTEON_H__
  10 #define __PCI_OCTEON_H__
  11
  12 #include <linux/pci.h>
  13
  14 /* Some PCI cards require delays when accessing config space. */
  15 #define PCI_CONFIG_SPACE_DELAY 10000
  16
  17 /*
  18  * The physical memory base mapped by BAR1.  256MB at the end of the
  19  * first 4GB.
  20  */
  21 #define CVMX_PCIE_BAR1_PHYS_BASE ((1ull << 32) - (1ull << 28))
  22 #define CVMX_PCIE_BAR1_PHYS_SIZE (1ull << 28)
  23
  24 /*
  25  * The RC base of BAR1.  gen1 has a 39-bit BAR2, gen2 has 41-bit BAR2,
  26  * place BAR1 so it is the same for both.
  27  */
  28 #define CVMX_PCIE_BAR1_RC_BASE (1ull << 41)
  29
  30 /*
  31  * pcibios_map_irq() is defined inside pci-octeon.c. All it does is
  32  * call the Octeon specific version pointed to by this variable. This
  33  * function needs to change for PCI or PCIe based hosts.
  34  */
  35 extern int (*octeon_pcibios_map_irq)(const struct pci_dev *dev,
  36                                      u8 slot, u8 pin);
  37
  38 /*
  39  * For PCI (not PCIe) the BAR2 base address.
  40  */
  41 #define OCTEON_BAR2_PCI_ADDRESS 0x8000000000ull
  42
  43 /*
  44  * For PCI (not PCIe) the base of the memory mapped by BAR1
  45  */
  46 extern u64 octeon_bar1_pci_phys;
  47
  48 /*
  49  * The following defines are used when octeon_dma_bar_type =
  50  * OCTEON_DMA_BAR_TYPE_BIG
  51  */
  52 #define OCTEON_PCI_BAR1_HOLE_BITS 5
  53 #define OCTEON_PCI_BAR1_HOLE_SIZE (1ul<<(OCTEON_PCI_BAR1_HOLE_BITS+3))
  54
  55 enum octeon_dma_bar_type {
  56         OCTEON_DMA_BAR_TYPE_INVALID,
  57         OCTEON_DMA_BAR_TYPE_SMALL,
  58         OCTEON_DMA_BAR_TYPE_BIG,
  59         OCTEON_DMA_BAR_TYPE_PCIE
  60 };
  61
  62 /*
  63  * This tells the DMA mapping system in dma-octeon.c how to map PCI
  64  * DMA addresses.
  65  */
  66 extern enum octeon_dma_bar_type octeon_dma_bar_type;
  67
  68 #endif