2 * QEMU Common PCI Host bridge configuration data space access routines.
4 * Copyright (c) 2006 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
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11 * furnished to do so, subject to the following conditions:
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25 /* Worker routines for a PCI host controller that uses an {address,data}
26 register pair to access PCI configuration space. */
34 #define PCI_DPRINTF(fmt, ...) \
35 do { printf("pci_host_data: " fmt , ## __VA_ARGS__); } while (0)
37 #define PCI_DPRINTF(fmt, ...)
46 static void pci_host_data_writeb(void* opaque, a_pci_addr addr, uint32_t val)
48 PCIHostState *s = opaque;
50 PCI_DPRINTF("writeb addr " TARGET_FMT_plx " val %x\n",
51 (a_target_phys_addr)addr, val);
52 if (s->config_reg & (1u << 31))
53 pci_data_write(s->bus, s->config_reg | (addr & 3), val, 1);
56 static void pci_host_data_writew(void* opaque, a_pci_addr addr, uint32_t val)
58 PCIHostState *s = opaque;
59 #ifdef TARGET_WORDS_BIGENDIAN
62 PCI_DPRINTF("writew addr " TARGET_FMT_plx " val %x\n",
63 (a_target_phys_addr)addr, val);
64 if (s->config_reg & (1u << 31))
65 pci_data_write(s->bus, s->config_reg | (addr & 3), val, 2);
68 static void pci_host_data_writel(void* opaque, a_pci_addr addr, uint32_t val)
70 PCIHostState *s = opaque;
71 #ifdef TARGET_WORDS_BIGENDIAN
74 PCI_DPRINTF("writel addr " TARGET_FMT_plx " val %x\n",
75 (a_target_phys_addr)addr, val);
76 if (s->config_reg & (1u << 31))
77 pci_data_write(s->bus, s->config_reg, val, 4);
80 static uint32_t pci_host_data_readb(void* opaque, a_pci_addr addr)
82 PCIHostState *s = opaque;
85 if (!(s->config_reg & (1 << 31)))
87 val = pci_data_read(s->bus, s->config_reg | (addr & 3), 1);
88 PCI_DPRINTF("readb addr " TARGET_FMT_plx " val %x\n",
89 (a_target_phys_addr)addr, val);
93 static uint32_t pci_host_data_readw(void* opaque, a_pci_addr addr)
95 PCIHostState *s = opaque;
97 if (!(s->config_reg & (1 << 31)))
99 val = pci_data_read(s->bus, s->config_reg | (addr & 3), 2);
100 PCI_DPRINTF("readw addr " TARGET_FMT_plx " val %x\n",
101 (a_target_phys_addr)addr, val);
102 #ifdef TARGET_WORDS_BIGENDIAN
108 static uint32_t pci_host_data_readl(void* opaque, a_pci_addr addr)
110 PCIHostState *s = opaque;
112 if (!(s->config_reg & (1 << 31)))
114 val = pci_data_read(s->bus, s->config_reg | (addr & 3), 4);
115 PCI_DPRINTF("readl addr " TARGET_FMT_plx " val %x\n",
116 (a_target_phys_addr)addr, val);
117 #ifdef TARGET_WORDS_BIGENDIAN