mirror of https://github.com/proxmox/mirror_qemu
133 lines
3.0 KiB
C
133 lines
3.0 KiB
C
/*
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* QEMU Alpha PCI support functions.
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*
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* Some of this isn't very Alpha specific at all.
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*
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* ??? Sparse memory access not implemented.
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*/
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#include "config.h"
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#include "alpha_sys.h"
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#include "qemu-log.h"
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#include "sysemu.h"
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#include "vmware_vga.h"
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/* PCI IO reads/writes, to byte-word addressable memory. */
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/* ??? Doesn't handle multiple PCI busses. */
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static uint64_t bw_io_read(void *opaque, target_phys_addr_t addr, unsigned size)
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{
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switch (size) {
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case 1:
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return cpu_inb(addr);
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case 2:
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return cpu_inw(addr);
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case 4:
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return cpu_inl(addr);
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}
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abort();
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}
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static void bw_io_write(void *opaque, target_phys_addr_t addr,
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uint64_t val, unsigned size)
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{
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switch (size) {
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case 1:
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cpu_outb(addr, val);
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break;
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case 2:
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cpu_outw(addr, val);
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break;
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case 4:
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cpu_outl(addr, val);
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break;
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default:
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abort();
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}
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}
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const MemoryRegionOps alpha_pci_bw_io_ops = {
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.read = bw_io_read,
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.write = bw_io_write,
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.endianness = DEVICE_LITTLE_ENDIAN,
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.impl = {
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.min_access_size = 1,
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.max_access_size = 4,
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},
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};
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/* PCI config space reads/writes, to byte-word addressable memory. */
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static uint64_t bw_conf1_read(void *opaque, target_phys_addr_t addr,
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unsigned size)
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{
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PCIBus *b = opaque;
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return pci_data_read(b, addr, size);
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}
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static void bw_conf1_write(void *opaque, target_phys_addr_t addr,
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uint64_t val, unsigned size)
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{
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PCIBus *b = opaque;
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pci_data_write(b, addr, val, size);
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}
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const MemoryRegionOps alpha_pci_conf1_ops = {
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.read = bw_conf1_read,
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.write = bw_conf1_write,
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.endianness = DEVICE_LITTLE_ENDIAN,
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.impl = {
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.min_access_size = 1,
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.max_access_size = 4,
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},
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};
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/* PCI/EISA Interrupt Acknowledge Cycle. */
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static uint64_t iack_read(void *opaque, target_phys_addr_t addr, unsigned size)
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{
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return pic_read_irq(isa_pic);
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}
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static void special_write(void *opaque, target_phys_addr_t addr,
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uint64_t val, unsigned size)
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{
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qemu_log("pci: special write cycle");
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}
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const MemoryRegionOps alpha_pci_iack_ops = {
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.read = iack_read,
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.write = special_write,
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.endianness = DEVICE_LITTLE_ENDIAN,
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.valid = {
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.min_access_size = 4,
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.max_access_size = 4,
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},
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.impl = {
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.min_access_size = 4,
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.max_access_size = 4,
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},
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};
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void alpha_pci_vga_setup(PCIBus *pci_bus)
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{
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switch (vga_interface_type) {
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#ifdef CONFIG_SPICE
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case VGA_QXL:
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pci_create_simple(pci_bus, -1, "qxl-vga");
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return;
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#endif
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case VGA_CIRRUS:
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pci_cirrus_vga_init(pci_bus);
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return;
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case VGA_VMWARE:
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pci_vmsvga_init(pci_bus);
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return;
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}
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/* If VGA is enabled at all, and one of the above didn't work, then
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fallback to Standard VGA. */
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if (vga_interface_type != VGA_NONE) {
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pci_vga_init(pci_bus);
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}
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}
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