diff options
Diffstat (limited to 'qemu/hw/display/milkymist-vgafb.c')
| -rw-r--r-- | qemu/hw/display/milkymist-vgafb.c | 354 |
1 files changed, 0 insertions, 354 deletions
diff --git a/qemu/hw/display/milkymist-vgafb.c b/qemu/hw/display/milkymist-vgafb.c deleted file mode 100644 index 19ca25647..000000000 --- a/qemu/hw/display/milkymist-vgafb.c +++ /dev/null @@ -1,354 +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 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://www.milkymist.org/socdoc/vgafb.pdf - */ - -#include "qemu/osdep.h" -#include "hw/hw.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" - -#define BITS 8 -#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" -#define MILKYMIST_VGAFB(obj) \ - OBJECT_CHECK(MilkymistVgafbState, (obj), TYPE_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]; -}; -typedef struct MilkymistVgafbState MilkymistVgafbState; - -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 int milkymist_vgafb_init(SysBusDevice *dev) -{ - MilkymistVgafbState *s = MILKYMIST_VGAFB(dev); - - 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); - - s->con = graphic_console_init(DEVICE(dev), 0, &vgafb_ops, s); - - return 0; -} - -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); - SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); - - k->init = milkymist_vgafb_init; - dc->reset = milkymist_vgafb_reset; - dc->vmsd = &vmstate_milkymist_vgafb; - dc->props = milkymist_vgafb_properties; -} - -static const TypeInfo milkymist_vgafb_info = { - .name = TYPE_MILKYMIST_VGAFB, - .parent = TYPE_SYS_BUS_DEVICE, - .instance_size = sizeof(MilkymistVgafbState), - .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) |