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 /*
  15  * The physical memory base mapped by BAR1.  256MB at the end of the
  16  * first 4GB.
  17  */
  18 #define CVMX_PCIE_BAR1_PHYS_BASE ((1ull << 32) - (1ull << 28))
  19 #define CVMX_PCIE_BAR1_PHYS_SIZE (1ull << 28)
  20
  21 /*
  22  * The RC base of BAR1.  gen1 has a 39-bit BAR2, gen2 has 41-bit BAR2,
  23  * place BAR1 so it is the same for both.
  24  */
  25 #define CVMX_PCIE_BAR1_RC_BASE (1ull << 41)
  26
  27 /*
  28  * pcibios_map_irq() is defined inside pci-octeon.c. All it does is
  29  * call the Octeon specific version pointed to by this variable. This
  30  * function needs to change for PCI or PCIe based hosts.
  31  */
  32 extern int (*octeon_pcibios_map_irq)(const struct pci_dev *dev,
  33                                      u8 slot, u8 pin);
  34
  35 /*
  36  * For PCI (not PCIe) the BAR2 base address.
  37  */
  38 #define OCTEON_BAR2_PCI_ADDRESS 0x8000000000ull
  39
  40 /*
  41  * For PCI (not PCIe) the base of the memory mapped by BAR1
  42  */
  43 extern u64 octeon_bar1_pci_phys;
  44
  45 /*
  46  * The following defines are used when octeon_dma_bar_type =
  47  * OCTEON_DMA_BAR_TYPE_BIG
  48  */
  49 #define OCTEON_PCI_BAR1_HOLE_BITS 5
  50 #define OCTEON_PCI_BAR1_HOLE_SIZE (1ul<<(OCTEON_PCI_BAR1_HOLE_BITS+3))
  51
  52 enum octeon_dma_bar_type {
  53         OCTEON_DMA_BAR_TYPE_INVALID,
  54         OCTEON_DMA_BAR_TYPE_SMALL,
  55         OCTEON_DMA_BAR_TYPE_BIG,
  56         OCTEON_DMA_BAR_TYPE_PCIE,
  57         OCTEON_DMA_BAR_TYPE_PCIE2
  58 };
  59
  60 /*
  61  * This tells the DMA mapping system in dma-octeon.c how to map PCI
  62  * DMA addresses.
  63  */
  64 extern enum octeon_dma_bar_type octeon_dma_bar_type;
  65
  66 void octeon_pci_dma_init(void);
  67 extern char *octeon_swiotlb;
  68
  69 #endif