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review.coreboot.org / coreboot / 40cb3fe94dacfba0b146aae2be9c03c0a0ddb691 / . / util / vgabios / pci-userspace.c
blob: 5d8a7fedf0b2aacc046d7642178a053e1be0589c [file] [log] [blame]
Patrick Georgi7333a112020-05-08 20:48:04 +0200[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0-only */
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]2
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]3#include <stdio.h>
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]4#include <pci/pci.h>
Stefan Reinauer850e7d42015-09-28 13:12:04 -0700[diff] [blame]5#include "pci-userspace.h"
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]6
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]7#define DEBUG_PCI 1
8
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]9static struct pci_access *pacc;
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]10
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]11int pci_initialize(void)
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]12{
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]13 struct pci_dev *dev;
14
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]15 pacc = pci_alloc();
16
17 pci_init(pacc);
18 pci_scan_bus(pacc);
19 for (dev = pacc->devices; dev; dev = dev->next) {
20 pci_fill_info(dev, PCI_FILL_IDENT | PCI_FILL_BASES);
21 }
22 return 0;
23}
24
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]25int pci_exit(void)
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]26{
27 pci_cleanup(pacc);
28 return 0;
29}
30
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]31u8 pci_read_config8(struct device *dev, unsigned int where)
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]32{
33 struct pci_dev *d;
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]34 if ((d = pci_get_dev(pacc, 0, dev->busno, dev->slot, dev->func)))
35 return pci_read_byte(d, where);
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]36#ifdef DEBUG_PCI
37 printf("PCI: device not found while read byte (%x:%x.%x)\n",
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]38 dev->busno, dev->slot, dev->func);
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]39#endif
40 return 0;
41}
42
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]43u16 pci_read_config16(struct device *dev, unsigned int where)
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]44{
45 struct pci_dev *d;
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]46 if ((d = pci_get_dev(pacc, 0, dev->busno, dev->slot, dev->func)))
47 return pci_read_word(d, where);
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]48#ifdef DEBUG_PCI
49 printf("PCI: device not found while read word (%x:%x.%x)\n",
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]50 dev->busno, dev->slot, dev->func);
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]51#endif
52 return 0;
53}
54
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]55u32 pci_read_config32(struct device *dev, unsigned int where)
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]56{
57 struct pci_dev *d;
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]58 if ((d = pci_get_dev(pacc, 0, dev->busno, dev->slot, dev->func)))
59 return pci_read_long(d, where);
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]60#ifdef DEBUG_PCI
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]61 printf("PCI: device not found while read dword (%x:%x.%x)\n",
62 dev->busno, dev->slot, dev->func);
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]63#endif
64 return 0;
65}
66
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]67void pci_write_config8(struct device *dev, unsigned int where, u8 val)
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]68{
69 struct pci_dev *d;
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]70 if ((d = pci_get_dev(pacc, 0, dev->busno, dev->slot, dev->func)))
71 pci_write_byte(d, where, val);
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]72#ifdef DEBUG_PCI
73 else
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]74 printf("PCI: device not found while write byte (%x:%x.%x)\n",
75 dev->busno, dev->slot, dev->func);
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]76#endif
77}
78
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]79void pci_write_config16(struct device *dev, unsigned int where, u16 val)
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]80{
81 struct pci_dev *d;
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]82 if ((d = pci_get_dev(pacc, 0, dev->busno, dev->slot, dev->func)))
83 pci_write_word(d, where, val);
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]84#ifdef DEBUG_PCI
85 else
86 printf("PCI: device not found while write word (%x:%x.%x)\n",
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]87 dev->busno, dev->slot, dev->func);
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]88#endif
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]89}
90
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]91void pci_write_config32(struct device *dev, unsigned int where, u32 val)
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]92{
93 struct pci_dev *d;
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]94 if ((d = pci_get_dev(pacc, 0, dev->busno, dev->slot, dev->func)))
95 pci_write_long(d, where, val);
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]96#ifdef DEBUG_PCI
97 else
Stefan Reinauer05082732015-10-21 13:00:41 -0700[diff] [blame]98 printf("PCI: device not found while write dword (%x:%x.%x)\n",
99 dev->busno, dev->slot, dev->func);
Li-Ta Lo81521262004-07-08 17:18:27 +0000[diff] [blame]100#endif
101}