source: rtems/cpukit/libpci/pci/cfg_auto.h @ 358b8543

4.11
Last change on this file since 358b8543 was a31845f7, checked in by Daniel Hellstrom <daniel@…>, on Nov 28, 2011 at 9:11:10 AM

LIBPCI: added PCI layer to cpukit/libpci

  • Property mode set to 100644
File size: 1.6 KB
Line 
1/* PCI Auto Configuration Library
2 *
3 * COPYRIGHT (c) 2010.
4 * Cobham Gaisler AB.
5 *
6 * The license and distribution terms for this file may be
7 * found in the file LICENSE in this distribution or at
8 * http://www.rtems.com/license/LICENSE.
9 */
10
11#ifndef __PCI_CFG_AUTO_H__
12#define __PCI_CFG_AUTO_H__
13
14#define CFGOPT_NOSETUP_IRQ 0x1 /* Skip IRQ setup */
15
16/* PCI Memory Layout setup, used by the auto-config library in order to
17 * determine the addresses of PCI BARs and Buses.
18 *
19 * All addresses are in PCI address space, the actual address the CPU access
20 * may be different, and taken care of elsewhere.
21 */
22struct pci_auto_setup {
23        int options;
24
25        /* PCI prefetchable Memory space (OPTIONAL) */
26        uint32_t mem_start;
27        uint32_t mem_size; /* 0 = Use MEMIO space for prefetchable mem BARs */
28
29        /* PCI non-prefetchable Memory */
30        uint32_t memio_start;
31        uint32_t memio_size;
32
33        /* PCI I/O space (OPTIONAL) */
34        uint32_t io_start;
35        uint32_t io_size; /* 0 = No I/O space */
36
37        /* Get System IRQ connected to a PCI line of a PCI device on bus0.
38         * The return IRQ value zero equals no IRQ (IRQ disabled).
39         */
40        uint8_t (*irq_map)(pci_dev_t dev, int irq_pin);
41
42        /* IRQ Bridge routing. Returns the interrupt pin (0..3 = A..D) that
43         * a device is connected to on parent bus.
44         */
45        int (*irq_route)(pci_dev_t dev, int irq_pin);
46};
47
48/* Do PCI initialization: Enumrate buses, scan buses for devices, assign
49 * I/O MEM and MEMIO resources, assign IRQ and so on.
50 */
51extern int pci_config_auto(void);
52
53/* Register a configuration for the auto library (struct pci_auto_setup *) */
54extern void pci_config_auto_register(void *config);
55
56/* PCI memory map */
57extern struct pci_auto_setup pci_auto_cfg;
58
59#endif
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