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Diffstat (limited to 'hw/nubus/nubus-device.c')
-rw-r--r--hw/nubus/nubus-device.c227
1 files changed, 66 insertions, 161 deletions
diff --git a/hw/nubus/nubus-device.c b/hw/nubus/nubus-device.c
index ffe78a8823..0f1852f671 100644
--- a/hw/nubus/nubus-device.c
+++ b/hw/nubus/nubus-device.c
@@ -9,194 +9,99 @@
*/
#include "qemu/osdep.h"
+#include "qemu/datadir.h"
+#include "hw/irq.h"
+#include "hw/loader.h"
#include "hw/nubus/nubus.h"
#include "qapi/error.h"
+#include "qemu/error-report.h"
-/* The Format Block Structure */
-
-#define FBLOCK_DIRECTORY_OFFSET 0
-#define FBLOCK_LENGTH 4
-#define FBLOCK_CRC 8
-#define FBLOCK_REVISION_LEVEL 12
-#define FBLOCK_FORMAT 13
-#define FBLOCK_TEST_PATTERN 14
-#define FBLOCK_RESERVED 18
-#define FBLOCK_BYTE_LANES 19
-
-#define FBLOCK_SIZE 20
-#define FBLOCK_PATTERN_VAL 0x5a932bc7
-
-static uint64_t nubus_fblock_read(void *opaque, hwaddr addr, unsigned int size)
-{
- NubusDevice *dev = opaque;
- uint64_t val;
-
-#define BYTE(v, b) (((v) >> (24 - 8 * (b))) & 0xff)
- switch (addr) {
- case FBLOCK_BYTE_LANES:
- val = dev->byte_lanes;
- val |= (val ^ 0xf) << 4;
- break;
- case FBLOCK_RESERVED:
- val = 0x00;
- break;
- case FBLOCK_TEST_PATTERN...FBLOCK_TEST_PATTERN + 3:
- val = BYTE(FBLOCK_PATTERN_VAL, addr - FBLOCK_TEST_PATTERN);
- break;
- case FBLOCK_FORMAT:
- val = dev->rom_format;
- break;
- case FBLOCK_REVISION_LEVEL:
- val = dev->rom_rev;
- break;
- case FBLOCK_CRC...FBLOCK_CRC + 3:
- val = BYTE(dev->rom_crc, addr - FBLOCK_CRC);
- break;
- case FBLOCK_LENGTH...FBLOCK_LENGTH + 3:
- val = BYTE(dev->rom_length, addr - FBLOCK_LENGTH);
- break;
- case FBLOCK_DIRECTORY_OFFSET...FBLOCK_DIRECTORY_OFFSET + 3:
- val = BYTE(dev->directory_offset, addr - FBLOCK_DIRECTORY_OFFSET);
- break;
- default:
- val = 0;
- break;
- }
- return val;
-}
-
-static void nubus_fblock_write(void *opaque, hwaddr addr, uint64_t val,
- unsigned int size)
-{
- /* read only */
-}
-
-static const MemoryRegionOps nubus_format_block_ops = {
- .read = nubus_fblock_read,
- .write = nubus_fblock_write,
- .endianness = DEVICE_BIG_ENDIAN,
- .valid = {
- .min_access_size = 1,
- .max_access_size = 1,
- }
-};
-
-static void nubus_register_format_block(NubusDevice *dev)
-{
- char *fblock_name;
-
- fblock_name = g_strdup_printf("nubus-slot-%d-format-block",
- dev->slot_nb);
-
- hwaddr fblock_offset = memory_region_size(&dev->slot_mem) - FBLOCK_SIZE;
- memory_region_init_io(&dev->fblock_io, NULL, &nubus_format_block_ops,
- dev, fblock_name, FBLOCK_SIZE);
- memory_region_add_subregion(&dev->slot_mem, fblock_offset,
- &dev->fblock_io);
-
- g_free(fblock_name);
-}
-
-static void mac_nubus_rom_write(void *opaque, hwaddr addr, uint64_t val,
- unsigned int size)
-{
- /* read only */
-}
-
-static uint64_t mac_nubus_rom_read(void *opaque, hwaddr addr,
- unsigned int size)
+void nubus_set_irq(NubusDevice *nd, int level)
{
- NubusDevice *dev = opaque;
+ NubusBus *nubus = NUBUS_BUS(qdev_get_parent_bus(DEVICE(nd)));
- return dev->rom[addr];
-}
-
-static const MemoryRegionOps mac_nubus_rom_ops = {
- .read = mac_nubus_rom_read,
- .write = mac_nubus_rom_write,
- .endianness = DEVICE_BIG_ENDIAN,
- .valid = {
- .min_access_size = 1,
- .max_access_size = 1,
- },
-};
-
-
-void nubus_register_rom(NubusDevice *dev, const uint8_t *rom, uint32_t size,
- int revision, int format, uint8_t byte_lanes)
-{
- hwaddr rom_offset;
- char *rom_name;
-
- /* FIXME : really compute CRC */
- dev->rom_length = 0;
- dev->rom_crc = 0;
-
- dev->rom_rev = revision;
- dev->rom_format = format;
-
- dev->byte_lanes = byte_lanes;
- dev->directory_offset = -size;
-
- /* ROM */
-
- dev->rom = rom;
- rom_name = g_strdup_printf("nubus-slot-%d-rom", dev->slot_nb);
- memory_region_init_io(&dev->rom_io, NULL, &mac_nubus_rom_ops,
- dev, rom_name, size);
- memory_region_set_readonly(&dev->rom_io, true);
-
- rom_offset = memory_region_size(&dev->slot_mem) - FBLOCK_SIZE +
- dev->directory_offset;
- memory_region_add_subregion(&dev->slot_mem, rom_offset, &dev->rom_io);
-
- g_free(rom_name);
+ qemu_set_irq(nubus->irqs[nd->slot], level);
}
static void nubus_device_realize(DeviceState *dev, Error **errp)
{
NubusBus *nubus = NUBUS_BUS(qdev_get_parent_bus(dev));
NubusDevice *nd = NUBUS_DEVICE(dev);
- char *name;
+ char *name, *path;
hwaddr slot_offset;
+ int64_t size;
+ int ret;
- if (nubus->current_slot < NUBUS_FIRST_SLOT ||
- nubus->current_slot > NUBUS_LAST_SLOT) {
- error_setg(errp, "Cannot register nubus card, not enough slots");
- return;
- }
+ /* Super */
+ slot_offset = nd->slot * NUBUS_SUPER_SLOT_SIZE;
- nd->slot_nb = nubus->current_slot++;
- name = g_strdup_printf("nubus-slot-%d", nd->slot_nb);
+ name = g_strdup_printf("nubus-super-slot-%x", nd->slot);
+ memory_region_init(&nd->super_slot_mem, OBJECT(dev), name,
+ NUBUS_SUPER_SLOT_SIZE);
+ memory_region_add_subregion(&nubus->super_slot_io, slot_offset,
+ &nd->super_slot_mem);
+ g_free(name);
- if (nd->slot_nb < NUBUS_FIRST_SLOT) {
- /* Super */
- slot_offset = (nd->slot_nb - 6) * NUBUS_SUPER_SLOT_SIZE;
+ /* Normal */
+ slot_offset = nd->slot * NUBUS_SLOT_SIZE;
- memory_region_init(&nd->slot_mem, OBJECT(dev), name,
- NUBUS_SUPER_SLOT_SIZE);
- memory_region_add_subregion(&nubus->super_slot_io, slot_offset,
- &nd->slot_mem);
- } else {
- /* Normal */
- slot_offset = nd->slot_nb * NUBUS_SLOT_SIZE;
+ name = g_strdup_printf("nubus-slot-%x", nd->slot);
+ memory_region_init(&nd->slot_mem, OBJECT(dev), name, NUBUS_SLOT_SIZE);
+ memory_region_add_subregion(&nubus->slot_io, slot_offset,
+ &nd->slot_mem);
+ g_free(name);
- memory_region_init(&nd->slot_mem, OBJECT(dev), name, NUBUS_SLOT_SIZE);
- memory_region_add_subregion(&nubus->slot_io, slot_offset,
- &nd->slot_mem);
+ /* Declaration ROM */
+ if (nd->romfile != NULL) {
+ path = qemu_find_file(QEMU_FILE_TYPE_BIOS, nd->romfile);
+ if (path == NULL) {
+ path = g_strdup(nd->romfile);
+ }
+
+ size = get_image_size(path);
+ if (size < 0) {
+ error_setg(errp, "failed to find romfile \"%s\"", nd->romfile);
+ g_free(path);
+ return;
+ } else if (size == 0) {
+ error_setg(errp, "romfile \"%s\" is empty", nd->romfile);
+ g_free(path);
+ return;
+ } else if (size > NUBUS_DECL_ROM_MAX_SIZE) {
+ error_setg(errp, "romfile \"%s\" too large (maximum size 128K)",
+ nd->romfile);
+ g_free(path);
+ return;
+ }
+
+ name = g_strdup_printf("nubus-slot-%x-declaration-rom", nd->slot);
+ memory_region_init_rom(&nd->decl_rom, OBJECT(dev), name, size,
+ &error_abort);
+ ret = load_image_mr(path, &nd->decl_rom);
+ g_free(path);
+ if (ret < 0) {
+ error_setg(errp, "could not load romfile \"%s\"", nd->romfile);
+ return;
+ }
+ memory_region_add_subregion(&nd->slot_mem, NUBUS_SLOT_SIZE - size,
+ &nd->decl_rom);
}
-
- g_free(name);
- nubus_register_format_block(nd);
}
+static Property nubus_device_properties[] = {
+ DEFINE_PROP_INT32("slot", NubusDevice, slot, -1),
+ DEFINE_PROP_STRING("romfile", NubusDevice, romfile),
+ DEFINE_PROP_END_OF_LIST()
+};
+
static void nubus_device_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = nubus_device_realize;
dc->bus_type = TYPE_NUBUS_BUS;
+ device_class_set_props(dc, nubus_device_properties);
}
static const TypeInfo nubus_device_type_info = {
generated by cgit v1.2.3 (git 2.26.2) at 2025-03-19 14:52:07 +0000