2 * QEMU Alpha PCI support functions.
4 * Some of this isn't very Alpha specific at all.
6 * ??? Sparse memory access not implemented.
10 #include "alpha_sys.h"
13 #include "vmware_vga.h"
16 /* PCI IO reads/writes, to byte-word addressable memory. */
17 /* ??? Doesn't handle multiple PCI busses. */
19 static uint64_t bw_io_read(void *opaque, target_phys_addr_t addr, unsigned size)
32 static void bw_io_write(void *opaque, target_phys_addr_t addr,
33 uint64_t val, unsigned size)
50 const MemoryRegionOps alpha_pci_bw_io_ops = {
53 .endianness = DEVICE_LITTLE_ENDIAN,
60 /* PCI config space reads/writes, to byte-word addressable memory. */
61 static uint64_t bw_conf1_read(void *opaque, target_phys_addr_t addr,
65 return pci_data_read(b, addr, size);
68 static void bw_conf1_write(void *opaque, target_phys_addr_t addr,
69 uint64_t val, unsigned size)
72 pci_data_write(b, addr, val, size);
75 const MemoryRegionOps alpha_pci_conf1_ops = {
76 .read = bw_conf1_read,
77 .write = bw_conf1_write,
78 .endianness = DEVICE_LITTLE_ENDIAN,
85 /* PCI/EISA Interrupt Acknowledge Cycle. */
87 static uint64_t iack_read(void *opaque, target_phys_addr_t addr, unsigned size)
89 return pic_read_irq(isa_pic);
92 static void special_write(void *opaque, target_phys_addr_t addr,
93 uint64_t val, unsigned size)
95 qemu_log("pci: special write cycle");
98 const MemoryRegionOps alpha_pci_iack_ops = {
100 .write = special_write,
101 .endianness = DEVICE_LITTLE_ENDIAN,
103 .min_access_size = 4,
104 .max_access_size = 4,
107 .min_access_size = 4,
108 .max_access_size = 4,
112 void alpha_pci_vga_setup(PCIBus *pci_bus)
114 switch (vga_interface_type) {
117 pci_create_simple(pci_bus, -1, "qxl-vga");
121 pci_cirrus_vga_init(pci_bus);
124 if (pci_vmsvga_init(pci_bus)) {
129 /* If VGA is enabled at all, and one of the above didn't work, then
130 fallback to Standard VGA. */
131 if (vga_interface_type != VGA_NONE) {
132 pci_vga_init(pci_bus);