[1b33b9d] | 1 | /* SPDX-License-Identifier: BSD-2-Clause */ |
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| 2 | |
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[a31845f7] | 3 | /* PCI Configuration Library |
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| 4 | * |
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[71e8a5c] | 5 | * COPYRIGHT (c) 2010 Cobham Gaisler AB. |
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[a31845f7] | 6 | * |
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[1b33b9d] | 7 | * Redistribution and use in source and binary forms, with or without |
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| 8 | * modification, are permitted provided that the following conditions |
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| 9 | * are met: |
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| 10 | * 1. Redistributions of source code must retain the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer. |
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| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 13 | * notice, this list of conditions and the following disclaimer in the |
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| 14 | * documentation and/or other materials provided with the distribution. |
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| 15 | * |
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| 16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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| 20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 26 | * POSSIBILITY OF SUCH DAMAGE. |
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[a31845f7] | 27 | */ |
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| 28 | |
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| 29 | #include <pci/cfg.h> |
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| 30 | |
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| 31 | /* Number of buses. This is set from respective library */ |
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| 32 | int pci_bus_cnt = 0; |
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| 33 | |
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| 34 | /* PCI Address assigned to BARs which failed to fit into the PCI Window or |
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| 35 | * is disabled by any other cause. |
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| 36 | */ |
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| 37 | uint32_t pci_invalid_address = 0; |
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| 38 | |
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| 39 | /* PCI System type. Configuration Library setup this */ |
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[346a9a5] | 40 | enum pci_system_type pci_system_type = PCI_SYSTEM_NONE; |
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[a31845f7] | 41 | |
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| 42 | /* PCI Endianness. |
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| 43 | * |
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| 44 | * Host driver or BSP must override this be writing here if bus is defined |
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| 45 | * as non-standard big-endian. |
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| 46 | */ |
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| 47 | int pci_endian = PCI_LITTLE_ENDIAN; |
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| 48 | |
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| 49 | /* Configure PCI devices and bridges, and setup the RAM data structures |
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| 50 | * describing the PCI devices currently present in the system |
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| 51 | */ |
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| 52 | int pci_config_init(void) |
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| 53 | { |
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| 54 | if (pci_config_lib_init) |
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| 55 | return pci_config_lib_init(); |
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| 56 | else |
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| 57 | return 0; |
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| 58 | } |
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| 59 | |
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| 60 | void pci_config_register(void *config) |
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| 61 | { |
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| 62 | if (pci_config_lib_register) |
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| 63 | pci_config_lib_register(config); |
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| 64 | } |
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| 65 | |
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| 66 | /* Return the number of PCI busses available in the system, note that |
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| 67 | * there are always one bus (bus0) after the PCI library has been |
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| 68 | * initialized and a driver has been registered. |
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| 69 | */ |
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| 70 | int pci_bus_count(void) |
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| 71 | { |
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| 72 | return pci_bus_cnt; |
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| 73 | } |
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