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-rw-r--r--hw/display/milkymist-vgafb.c360
1 files changed, 0 insertions, 360 deletions
diff --git a/hw/display/milkymist-vgafb.c b/hw/display/milkymist-vgafb.c
deleted file mode 100644
index e2c587e..0000000
--- a/hw/display/milkymist-vgafb.c
+++ /dev/null
@@ -1,360 +0,0 @@
-
-/*
- * QEMU model of the Milkymist VGA framebuffer.
- *
- * Copyright (c) 2010-2012 Michael Walle <michael@walle.cc>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>.
- *
- *
- * Specification available at:
- * http://milkymist.walle.cc/socdoc/vgafb.pdf
- */
-
-#include "qemu/osdep.h"
-#include "hw/hw.h"
-#include "hw/qdev-properties.h"
-#include "hw/sysbus.h"
-#include "trace.h"
-#include "ui/console.h"
-#include "framebuffer.h"
-#include "ui/pixel_ops.h"
-#include "qemu/error-report.h"
-#include "qemu/module.h"
-#include "qom/object.h"
-
-#define BITS 8
-#include "migration/vmstate.h"
-#include "milkymist-vgafb_template.h"
-#define BITS 15
-#include "milkymist-vgafb_template.h"
-#define BITS 16
-#include "milkymist-vgafb_template.h"
-#define BITS 24
-#include "milkymist-vgafb_template.h"
-#define BITS 32
-#include "milkymist-vgafb_template.h"
-
-enum {
- R_CTRL = 0,
- R_HRES,
- R_HSYNC_START,
- R_HSYNC_END,
- R_HSCAN,
- R_VRES,
- R_VSYNC_START,
- R_VSYNC_END,
- R_VSCAN,
- R_BASEADDRESS,
- R_BASEADDRESS_ACT,
- R_BURST_COUNT,
- R_DDC,
- R_SOURCE_CLOCK,
- R_MAX
-};
-
-enum {
- CTRL_RESET = (1<<0),
-};
-
-#define TYPE_MILKYMIST_VGAFB "milkymist-vgafb"
-OBJECT_DECLARE_SIMPLE_TYPE(MilkymistVgafbState, MILKYMIST_VGAFB)
-
-struct MilkymistVgafbState {
- SysBusDevice parent_obj;
-
- MemoryRegion regs_region;
- MemoryRegionSection fbsection;
- QemuConsole *con;
-
- int invalidate;
- uint32_t fb_offset;
- uint32_t fb_mask;
-
- uint32_t regs[R_MAX];
-};
-
-static int vgafb_enabled(MilkymistVgafbState *s)
-{
- return !(s->regs[R_CTRL] & CTRL_RESET);
-}
-
-static void vgafb_update_display(void *opaque)
-{
- MilkymistVgafbState *s = opaque;
- SysBusDevice *sbd;
- DisplaySurface *surface = qemu_console_surface(s->con);
- int src_width;
- int first = 0;
- int last = 0;
- drawfn fn;
-
- if (!vgafb_enabled(s)) {
- return;
- }
-
- sbd = SYS_BUS_DEVICE(s);
- int dest_width = s->regs[R_HRES];
-
- switch (surface_bits_per_pixel(surface)) {
- case 0:
- return;
- case 8:
- fn = draw_line_8;
- break;
- case 15:
- fn = draw_line_15;
- dest_width *= 2;
- break;
- case 16:
- fn = draw_line_16;
- dest_width *= 2;
- break;
- case 24:
- fn = draw_line_24;
- dest_width *= 3;
- break;
- case 32:
- fn = draw_line_32;
- dest_width *= 4;
- break;
- default:
- hw_error("milkymist_vgafb: bad color depth\n");
- break;
- }
-
- src_width = s->regs[R_HRES] * 2;
- if (s->invalidate) {
- framebuffer_update_memory_section(&s->fbsection,
- sysbus_address_space(sbd),
- s->regs[R_BASEADDRESS] + s->fb_offset,
- s->regs[R_VRES], src_width);
- }
-
- framebuffer_update_display(surface, &s->fbsection,
- s->regs[R_HRES],
- s->regs[R_VRES],
- src_width,
- dest_width,
- 0,
- s->invalidate,
- fn,
- NULL,
- &first, &last);
-
- if (first >= 0) {
- dpy_gfx_update(s->con, 0, first, s->regs[R_HRES], last - first + 1);
- }
- s->invalidate = 0;
-}
-
-static void vgafb_invalidate_display(void *opaque)
-{
- MilkymistVgafbState *s = opaque;
- s->invalidate = 1;
-}
-
-static void vgafb_resize(MilkymistVgafbState *s)
-{
- if (!vgafb_enabled(s)) {
- return;
- }
-
- qemu_console_resize(s->con, s->regs[R_HRES], s->regs[R_VRES]);
- s->invalidate = 1;
-}
-
-static uint64_t vgafb_read(void *opaque, hwaddr addr,
- unsigned size)
-{
- MilkymistVgafbState *s = opaque;
- uint32_t r = 0;
-
- addr >>= 2;
- switch (addr) {
- case R_CTRL:
- case R_HRES:
- case R_HSYNC_START:
- case R_HSYNC_END:
- case R_HSCAN:
- case R_VRES:
- case R_VSYNC_START:
- case R_VSYNC_END:
- case R_VSCAN:
- case R_BASEADDRESS:
- case R_BURST_COUNT:
- case R_DDC:
- case R_SOURCE_CLOCK:
- r = s->regs[addr];
- break;
- case R_BASEADDRESS_ACT:
- r = s->regs[R_BASEADDRESS];
- break;
-
- default:
- error_report("milkymist_vgafb: read access to unknown register 0x"
- TARGET_FMT_plx, addr << 2);
- break;
- }
-
- trace_milkymist_vgafb_memory_read(addr << 2, r);
-
- return r;
-}
-
-static void vgafb_write(void *opaque, hwaddr addr, uint64_t value,
- unsigned size)
-{
- MilkymistVgafbState *s = opaque;
-
- trace_milkymist_vgafb_memory_write(addr, value);
-
- addr >>= 2;
- switch (addr) {
- case R_CTRL:
- s->regs[addr] = value;
- vgafb_resize(s);
- break;
- case R_HSYNC_START:
- case R_HSYNC_END:
- case R_HSCAN:
- case R_VSYNC_START:
- case R_VSYNC_END:
- case R_VSCAN:
- case R_BURST_COUNT:
- case R_DDC:
- case R_SOURCE_CLOCK:
- s->regs[addr] = value;
- break;
- case R_BASEADDRESS:
- if (value & 0x1f) {
- error_report("milkymist_vgafb: framebuffer base address have to "
- "be 32 byte aligned");
- break;
- }
- s->regs[addr] = value & s->fb_mask;
- s->invalidate = 1;
- break;
- case R_HRES:
- case R_VRES:
- s->regs[addr] = value;
- vgafb_resize(s);
- break;
- case R_BASEADDRESS_ACT:
- error_report("milkymist_vgafb: write to read-only register 0x"
- TARGET_FMT_plx, addr << 2);
- break;
-
- default:
- error_report("milkymist_vgafb: write access to unknown register 0x"
- TARGET_FMT_plx, addr << 2);
- break;
- }
-}
-
-static const MemoryRegionOps vgafb_mmio_ops = {
- .read = vgafb_read,
- .write = vgafb_write,
- .valid = {
- .min_access_size = 4,
- .max_access_size = 4,
- },
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-static void milkymist_vgafb_reset(DeviceState *d)
-{
- MilkymistVgafbState *s = MILKYMIST_VGAFB(d);
- int i;
-
- for (i = 0; i < R_MAX; i++) {
- s->regs[i] = 0;
- }
-
- /* defaults */
- s->regs[R_CTRL] = CTRL_RESET;
- s->regs[R_HRES] = 640;
- s->regs[R_VRES] = 480;
- s->regs[R_BASEADDRESS] = 0;
-}
-
-static const GraphicHwOps vgafb_ops = {
- .invalidate = vgafb_invalidate_display,
- .gfx_update = vgafb_update_display,
-};
-
-static void milkymist_vgafb_init(Object *obj)
-{
- MilkymistVgafbState *s = MILKYMIST_VGAFB(obj);
- SysBusDevice *dev = SYS_BUS_DEVICE(obj);
-
- memory_region_init_io(&s->regs_region, OBJECT(s), &vgafb_mmio_ops, s,
- "milkymist-vgafb", R_MAX * 4);
- sysbus_init_mmio(dev, &s->regs_region);
-}
-
-static void milkymist_vgafb_realize(DeviceState *dev, Error **errp)
-{
- MilkymistVgafbState *s = MILKYMIST_VGAFB(dev);
-
- s->con = graphic_console_init(dev, 0, &vgafb_ops, s);
-}
-
-static int vgafb_post_load(void *opaque, int version_id)
-{
- vgafb_invalidate_display(opaque);
- return 0;
-}
-
-static const VMStateDescription vmstate_milkymist_vgafb = {
- .name = "milkymist-vgafb",
- .version_id = 1,
- .minimum_version_id = 1,
- .post_load = vgafb_post_load,
- .fields = (VMStateField[]) {
- VMSTATE_UINT32_ARRAY(regs, MilkymistVgafbState, R_MAX),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static Property milkymist_vgafb_properties[] = {
- DEFINE_PROP_UINT32("fb_offset", MilkymistVgafbState, fb_offset, 0x0),
- DEFINE_PROP_UINT32("fb_mask", MilkymistVgafbState, fb_mask, 0xffffffff),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void milkymist_vgafb_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
-
- dc->reset = milkymist_vgafb_reset;
- dc->vmsd = &vmstate_milkymist_vgafb;
- device_class_set_props(dc, milkymist_vgafb_properties);
- dc->realize = milkymist_vgafb_realize;
-}
-
-static const TypeInfo milkymist_vgafb_info = {
- .name = TYPE_MILKYMIST_VGAFB,
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(MilkymistVgafbState),
- .instance_init = milkymist_vgafb_init,
- .class_init = milkymist_vgafb_class_init,
-};
-
-static void milkymist_vgafb_register_types(void)
-{
- type_register_static(&milkymist_vgafb_info);
-}
-
-type_init(milkymist_vgafb_register_types)
generated by cgit v1.1 at 2024-12-25 13:28:18 +0000