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Re: [Qemu-trivial] [PATCH] vmware_vga: Cleanup and allow simple drivers
From: |
Jan Kiszka |
Subject: |
Re: [Qemu-trivial] [PATCH] vmware_vga: Cleanup and allow simple drivers to work without the fifo |
Date: |
Wed, 22 Aug 2012 10:03:55 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
On 2012-08-21 23:33, BALATON Zoltan wrote:
>
> Detailed changes: Removing info available elsewhere from vmsvga_state.
> Fix mixup between depth and bits per pixel. Return a value for FB_SIZE
> even before enabled (according to the documentation, drivers should
> read this value before enabling the device). Postpone stopping the
> dirty log to the point where the command fifo is configured to allow
> drivers which don't use the fifo to work too. (Without this the
> picture rendered into the vram never got to the screen but the
> DIRECT_VRAM option meant to support this case was removed a year ago.)
This is a rather big patch. I strongly suspect you can break it up into
smaller pieces that address separate aspects one-by-one. Also, it is
definitely to heavy for "qemu-trivial".
Jan
>
> Signed-off-by: BALATON Zoltan <address@hidden>
> ---
> console.h | 20 +++++
> hw/vga.c | 2 +-
> hw/vga_int.h | 1 +
> hw/vmware_vga.c | 243
> ++++++++++++++++++++++++++-----------------------------
> 4 files changed, 137 insertions(+), 129 deletions(-)
>
> diff --git a/console.h b/console.h
> index 4334db5..00baf5b 100644
> --- a/console.h
> +++ b/console.h
> @@ -328,6 +328,26 @@ static inline int
> ds_get_bytes_per_pixel(DisplayState *ds)
> return ds->surface->pf.bytes_per_pixel;
> }
>
> +static inline int ds_get_depth(DisplayState *ds)
> +{
> + return ds->surface->pf.depth;
> +}
> +
> +static inline int ds_get_rmask(DisplayState *ds)
> +{
> + return ds->surface->pf.rmask;
> +}
> +
> +static inline int ds_get_gmask(DisplayState *ds)
> +{
> + return ds->surface->pf.gmask;
> +}
> +
> +static inline int ds_get_bmask(DisplayState *ds)
> +{
> + return ds->surface->pf.bmask;
> +}
> +
> #ifdef CONFIG_CURSES
> #include <curses.h>
> typedef chtype console_ch_t;
> diff --git a/hw/vga.c b/hw/vga.c
> index f82ced8..7e6dc41 100644
> --- a/hw/vga.c
> +++ b/hw/vga.c
> @@ -1611,7 +1611,7 @@ void vga_invalidate_scanlines(VGACommonState *s,
> int y1, int y2)
> }
> }
>
> -static void vga_sync_dirty_bitmap(VGACommonState *s)
> +void vga_sync_dirty_bitmap(VGACommonState *s)
> {
> memory_region_sync_dirty_bitmap(&s->vram);
> }
> diff --git a/hw/vga_int.h b/hw/vga_int.h
> index 8938093..16d53ef 100644
> --- a/hw/vga_int.h
> +++ b/hw/vga_int.h
> @@ -195,6 +195,7 @@ MemoryRegion *vga_init_io(VGACommonState *s,
> const MemoryRegionPortio **vbe_ports);
> void vga_common_reset(VGACommonState *s);
>
> +void vga_sync_dirty_bitmap(VGACommonState *s);
> void vga_dirty_log_start(VGACommonState *s);
> void vga_dirty_log_stop(VGACommonState *s);
>
> diff --git a/hw/vmware_vga.c b/hw/vmware_vga.c
> index f5e4f44..2b77766 100644
> --- a/hw/vmware_vga.c
> +++ b/hw/vmware_vga.c
> @@ -32,16 +32,19 @@
> #define HW_FILL_ACCEL
> #define HW_MOUSE_ACCEL
>
> -# include "vga_int.h"
> +#include "vga_int.h"
> +
> +/* See http://vmware-svga.sf.net/ for some documentation on VMWare SVGA */
>
> struct vmsvga_state_s {
> VGACommonState vga;
>
> - int width;
> - int height;
> +/* -*- The members marked are now unused and could be removed but they are
> + * contained in the VMState thus need special handling. Maybe they
> could
> + * be removed the next time a new machine type is added.
> + */
> int invalidated;
> - int depth;
> - int bypp;
> + int depth; /* -*- */
> int enable;
> int config;
> struct {
> @@ -58,11 +61,8 @@ struct vmsvga_state_s {
> int new_height;
> uint32_t guest;
> uint32_t svgaid;
> - uint32_t wred;
> - uint32_t wgreen;
> - uint32_t wblue;
> int syncing;
> - int fb_size;
> + int fb_size; /* -*- */
>
> MemoryRegion fifo_ram;
> uint8_t *fifo_ptr;
> @@ -298,40 +298,33 @@ static inline void vmsvga_update_rect(struct
> vmsvga_state_s *s,
> uint8_t *src;
> uint8_t *dst;
>
> - if (x + w > s->width) {
> + if (x + w > ds_get_width(s->vga.ds)) {
> fprintf(stderr, "%s: update width too large x: %d, w: %d\n",
> - __FUNCTION__, x, w);
> - x = MIN(x, s->width);
> - w = s->width - x;
> + __func__, x, w);
> + x = MIN(x, ds_get_width(s->vga.ds));
> + w = ds_get_width(s->vga.ds) - x;
> }
>
> - if (y + h > s->height) {
> + if (y + h > ds_get_height(s->vga.ds)) {
> fprintf(stderr, "%s: update height too large y: %d, h: %d\n",
> - __FUNCTION__, y, h);
> - y = MIN(y, s->height);
> - h = s->height - y;
> + __func__, y, h);
> + y = MIN(y, ds_get_height(s->vga.ds));
> + h = ds_get_height(s->vga.ds) - y;
> }
>
> - line = h;
> - bypl = s->bypp * s->width;
> - width = s->bypp * w;
> - start = s->bypp * x + bypl * y;
> + bypl = ds_get_linesize(s->vga.ds);
> + width = ds_get_bytes_per_pixel(s->vga.ds) * w;
> + start = ds_get_bytes_per_pixel(s->vga.ds) * x + bypl * y;
> src = s->vga.vram_ptr + start;
> dst = ds_get_data(s->vga.ds) + start;
>
> - for (; line > 0; line --, src += bypl, dst += bypl)
> + for (line = h; line > 0; line--, src += bypl, dst += bypl) {
> memcpy(dst, src, width);
> + }
>
> dpy_update(s->vga.ds, x, y, w, h);
> }
>
> -static inline void vmsvga_update_screen(struct vmsvga_state_s *s)
> -{
> - memcpy(ds_get_data(s->vga.ds), s->vga.vram_ptr,
> - s->bypp * s->width * s->height);
> - dpy_update(s->vga.ds, 0, 0, s->width, s->height);
> -}
> -
> static inline void vmsvga_update_rect_delayed(struct vmsvga_state_s *s,
> int x, int y, int w, int h)
> {
> @@ -364,20 +357,21 @@ static inline void vmsvga_copy_rect(struct
> vmsvga_state_s *s,
> int x0, int y0, int x1, int y1, int w, int h)
> {
> uint8_t *vram = s->vga.vram_ptr;
> - int bypl = s->bypp * s->width;
> - int width = s->bypp * w;
> + int bypl = ds_get_linesize(s->vga.ds);
> + int bypp = ds_get_bytes_per_pixel(s->vga.ds);
> + int width = bypp * w;
> int line = h;
> uint8_t *ptr[2];
>
> if (y1 > y0) {
> - ptr[0] = vram + s->bypp * x0 + bypl * (y0 + h - 1);
> - ptr[1] = vram + s->bypp * x1 + bypl * (y1 + h - 1);
> + ptr[0] = vram + bypp * x0 + bypl * (y0 + h - 1);
> + ptr[1] = vram + bypp * x1 + bypl * (y1 + h - 1);
> for (; line > 0; line --, ptr[0] -= bypl, ptr[1] -= bypl) {
> memmove(ptr[1], ptr[0], width);
> }
> } else {
> - ptr[0] = vram + s->bypp * x0 + bypl * y0;
> - ptr[1] = vram + s->bypp * x1 + bypl * y1;
> + ptr[0] = vram + bypp * x0 + bypl * y0;
> + ptr[1] = vram + bypp * x1 + bypl * y1;
> for (; line > 0; line --, ptr[0] += bypl, ptr[1] += bypl) {
> memmove(ptr[1], ptr[0], width);
> }
> @@ -391,13 +385,11 @@ static inline void vmsvga_copy_rect(struct
> vmsvga_state_s *s,
> static inline void vmsvga_fill_rect(struct vmsvga_state_s *s,
> uint32_t c, int x, int y, int w, int h)
> {
> - uint8_t *vram = s->vga.vram_ptr;
> - int bypp = s->bypp;
> - int bypl = bypp * s->width;
> - int width = bypp * w;
> + int bypl = ds_get_linesize(s->vga.ds);
> + int width = ds_get_bytes_per_pixel(s->vga.ds) * w;
> int line = h;
> int column;
> - uint8_t *fst = vram + bypp * x + bypl * y;
> + uint8_t *fst;
> uint8_t *dst;
> uint8_t *src;
> uint8_t col[4];
> @@ -407,12 +399,14 @@ static inline void vmsvga_fill_rect(struct
> vmsvga_state_s *s,
> col[2] = c >> 16;
> col[3] = c >> 24;
>
> + fst = s->vga.vram_ptr + ds_get_bytes_per_pixel(s->vga.ds) * x +
> bypl * y;
> +
> if (line--) {
> dst = fst;
> src = col;
> for (column = width; column > 0; column--) {
> *(dst++) = *(src++);
> - if (src - col == bypp) {
> + if (src - col == ds_get_bytes_per_pixel(s->vga.ds)) {
> src = col;
> }
> }
> @@ -474,7 +468,7 @@ static inline void vmsvga_cursor_define(struct
> vmsvga_state_s *s,
> break;
> default:
> fprintf(stderr, "%s: unhandled bpp %d, using fallback cursor\n",
> - __FUNCTION__, c->bpp);
> + __func__, c->bpp);
> cursor_put(qc);
> qc = cursor_builtin_left_ptr();
> }
> @@ -665,7 +659,7 @@ static void vmsvga_fifo_run(struct vmsvga_state_s *s)
> while (args --)
> vmsvga_fifo_read(s);
> printf("%s: Unknown command 0x%02x in SVGA command FIFO\n",
> - __FUNCTION__, cmd);
> + __func__, cmd);
> break;
>
> rewind:
> @@ -701,10 +695,10 @@ static uint32_t vmsvga_value_read(void *opaque,
> uint32_t address)
> return s->enable;
>
> case SVGA_REG_WIDTH:
> - return s->width;
> + return ds_get_width(s->vga.ds);
>
> case SVGA_REG_HEIGHT:
> - return s->height;
> + return ds_get_height(s->vga.ds);
>
> case SVGA_REG_MAX_WIDTH:
> return SVGA_MAX_WIDTH;
> @@ -713,23 +707,25 @@ static uint32_t vmsvga_value_read(void *opaque,
> uint32_t address)
> return SVGA_MAX_HEIGHT;
>
> case SVGA_REG_DEPTH:
> - return s->depth;
> + return ds_get_depth(s->vga.ds);
>
> case SVGA_REG_BITS_PER_PIXEL:
> - return (s->depth + 7) & ~7;
> + return ds_get_bits_per_pixel(s->vga.ds);
>
> case SVGA_REG_PSEUDOCOLOR:
> return 0x0;
>
> case SVGA_REG_RED_MASK:
> - return s->wred;
> + return ds_get_rmask(s->vga.ds);
> +
> case SVGA_REG_GREEN_MASK:
> - return s->wgreen;
> + return ds_get_gmask(s->vga.ds);
> +
> case SVGA_REG_BLUE_MASK:
> - return s->wblue;
> + return ds_get_bmask(s->vga.ds);
>
> case SVGA_REG_BYTES_PER_LINE:
> - return ((s->depth + 7) >> 3) * s->new_width;
> + return ds_get_bytes_per_pixel(s->vga.ds) * s->new_width;
>
> case SVGA_REG_FB_START: {
> struct pci_vmsvga_state_s *pci_vmsvga
> @@ -741,10 +737,10 @@ static uint32_t vmsvga_value_read(void *opaque,
> uint32_t address)
> return 0x0;
>
> case SVGA_REG_VRAM_SIZE:
> - return s->vga.vram_size;
> + return s->vga.vram_size; /* No physical VRAM besides the
> framebuffer */
>
> case SVGA_REG_FB_SIZE:
> - return s->fb_size;
> + return s->vga.vram_size;
>
> case SVGA_REG_CAPABILITIES:
> caps = SVGA_CAP_NONE;
> @@ -793,7 +789,7 @@ static uint32_t vmsvga_value_read(void *opaque,
> uint32_t address)
> return s->cursor.on;
>
> case SVGA_REG_HOST_BITS_PER_PIXEL:
> - return (s->depth + 7) & ~7;
> + return ds_get_bits_per_pixel(s->vga.ds);
>
> case SVGA_REG_SCRATCH_SIZE:
> return s->scratch_size;
> @@ -808,7 +804,7 @@ static uint32_t vmsvga_value_read(void *opaque,
> uint32_t address)
> if (s->index >= SVGA_SCRATCH_BASE &&
> s->index < SVGA_SCRATCH_BASE + s->scratch_size)
> return s->scratch[s->index - SVGA_SCRATCH_BASE];
> - printf("%s: Bad register %02x\n", __FUNCTION__, s->index);
> + printf("%s: Bad register %02x\n", __func__, s->index);
> }
>
> return 0;
> @@ -824,14 +820,10 @@ static void vmsvga_value_write(void *opaque,
> uint32_t address, uint32_t value)
> break;
>
> case SVGA_REG_ENABLE:
> - s->enable = value;
> - s->config &= !!value;
> - s->width = -1;
> - s->height = -1;
> + s->enable = !!value;
> s->invalidated = 1;
> s->vga.invalidate(&s->vga);
> - if (s->enable) {
> - s->fb_size = ((s->depth + 7) >> 3) * s->new_width *
> s->new_height;
> + if (s->enable && s->config) {
> vga_dirty_log_stop(&s->vga);
> } else {
> vga_dirty_log_start(&s->vga);
> @@ -839,19 +831,26 @@ static void vmsvga_value_write(void *opaque,
> uint32_t address, uint32_t value)
> break;
>
> case SVGA_REG_WIDTH:
> - s->new_width = value;
> - s->invalidated = 1;
> + if (value <= SVGA_MAX_WIDTH) {
> + s->new_width = value;
> + s->invalidated = 1;
> + } else {
> + printf("%s: Bad width: %i\n", __func__, value);
> + }
> break;
>
> case SVGA_REG_HEIGHT:
> - s->new_height = value;
> - s->invalidated = 1;
> + if (value <= SVGA_MAX_HEIGHT) {
> + s->new_height = value;
> + s->invalidated = 1;
> + } else {
> + printf("%s: Bad height: %i\n", __func__, value);
> + }
> break;
>
> - case SVGA_REG_DEPTH:
> case SVGA_REG_BITS_PER_PIXEL:
> - if (value != s->depth) {
> - printf("%s: Bad colour depth: %i bits\n", __FUNCTION__,
> value);
> + if (value != ds_get_bits_per_pixel(s->vga.ds)) {
> + printf("%s: Bad bits per pixel: %i bits\n", __func__, value);
> s->config = 0;
> }
> break;
> @@ -860,15 +859,19 @@ static void vmsvga_value_write(void *opaque,
> uint32_t address, uint32_t value)
> if (value) {
> s->fifo = (uint32_t *) s->fifo_ptr;
> /* Check range and alignment. */
> - if ((CMD(min) | CMD(max) |
> - CMD(next_cmd) | CMD(stop)) & 3)
> + if ((CMD(min) | CMD(max) | CMD(next_cmd) | CMD(stop)) & 3) {
> break;
> - if (CMD(min) < (uint8_t *) s->cmd->fifo - (uint8_t *) s->fifo)
> + }
> + if (CMD(min) < (uint8_t *) s->cmd->fifo - (uint8_t *)
> s->fifo) {
> break;
> - if (CMD(max) > SVGA_FIFO_SIZE)
> + }
> + if (CMD(max) > SVGA_FIFO_SIZE) {
> break;
> - if (CMD(max) < CMD(min) + 10 * 1024)
> + }
> + if (CMD(max) < CMD(min) + 10 * 1024) {
> break;
> + }
> + vga_dirty_log_stop(&s->vga);
> }
> s->config = !!value;
> break;
> @@ -883,8 +886,8 @@ static void vmsvga_value_write(void *opaque,
> uint32_t address, uint32_t value)
> #ifdef VERBOSE
> if (value >= GUEST_OS_BASE && value < GUEST_OS_BASE +
> ARRAY_SIZE(vmsvga_guest_id))
> - printf("%s: guest runs %s.\n", __FUNCTION__,
> - vmsvga_guest_id[value - GUEST_OS_BASE]);
> + printf("%s: guest runs %s.\n", __func__,
> + vmsvga_guest_id[value - GUEST_OS_BASE]);
> #endif
> break;
>
> @@ -909,6 +912,7 @@ static void vmsvga_value_write(void *opaque,
> uint32_t address, uint32_t value)
> #endif
> break;
>
> + case SVGA_REG_DEPTH:
> case SVGA_REG_MEM_REGS:
> case SVGA_REG_NUM_DISPLAYS:
> case SVGA_REG_PITCHLOCK:
> @@ -921,28 +925,26 @@ static void vmsvga_value_write(void *opaque,
> uint32_t address, uint32_t value)
> s->scratch[s->index - SVGA_SCRATCH_BASE] = value;
> break;
> }
> - printf("%s: Bad register %02x\n", __FUNCTION__, s->index);
> + printf("%s: Bad register %02x\n", __func__, s->index);
> }
> }
>
> static uint32_t vmsvga_bios_read(void *opaque, uint32_t address)
> {
> - printf("%s: what are we supposed to return?\n", __FUNCTION__);
> + printf("%s: what are we supposed to return?\n", __func__);
> return 0xcafe;
> }
>
> static void vmsvga_bios_write(void *opaque, uint32_t address, uint32_t
> data)
> {
> - printf("%s: what are we supposed to do with (%08x)?\n",
> - __FUNCTION__, data);
> + printf("%s: what are we supposed to do with (%08x)?\n", __func__,
> data);
> }
>
> -static inline void vmsvga_size(struct vmsvga_state_s *s)
> +static inline void vmsvga_check_size(struct vmsvga_state_s *s)
> {
> - if (s->new_width != s->width || s->new_height != s->height) {
> - s->width = s->new_width;
> - s->height = s->new_height;
> - qemu_console_resize(s->vga.ds, s->width, s->height);
> + if (s->new_width != ds_get_width(s->vga.ds) ||
> + s->new_height != ds_get_height(s->vga.ds)) {
> + qemu_console_resize(s->vga.ds, s->new_width, s->new_height);
> s->invalidated = 1;
> }
> }
> @@ -950,12 +952,14 @@ static inline void vmsvga_size(struct
> vmsvga_state_s *s)
> static void vmsvga_update_display(void *opaque)
> {
> struct vmsvga_state_s *s = opaque;
> + bool dirty = false;
> +
> if (!s->enable) {
> s->vga.update(&s->vga);
> return;
> }
>
> - vmsvga_size(s);
> + vmsvga_check_size(s);
>
> vmsvga_fifo_run(s);
> vmsvga_update_rect_flush(s);
> @@ -964,9 +968,23 @@ static void vmsvga_update_display(void *opaque)
> * Is it more efficient to look at vram VGA-dirty bits or wait
> * for the driver to issue SVGA_CMD_UPDATE?
> */
> - if (s->invalidated) {
> + if (memory_region_is_logging(&s->vga.vram)) {
> + vga_sync_dirty_bitmap(&s->vga);
> + dirty = memory_region_get_dirty(&s->vga.vram, 0,
> + ds_get_linesize(s->vga.ds) * ds_get_height(s->vga.ds),
> + DIRTY_MEMORY_VGA);
> + }
> + if (s->invalidated || dirty) {
> s->invalidated = 0;
> - vmsvga_update_screen(s);
> + memcpy(ds_get_data(s->vga.ds), s->vga.vram_ptr,
> + ds_get_linesize(s->vga.ds) * ds_get_height(s->vga.ds));
> + dpy_update(s->vga.ds, 0, 0,
> + ds_get_width(s->vga.ds), ds_get_height(s->vga.ds));
> + }
> + if (dirty) {
> + memory_region_reset_dirty(&s->vga.vram, 0,
> + ds_get_linesize(s->vga.ds) * ds_get_height(s->vga.ds),
> + DIRTY_MEMORY_VGA);
> }
> }
>
> @@ -979,8 +997,6 @@ static void vmsvga_reset(DeviceState *dev)
> s->index = 0;
> s->enable = 0;
> s->config = 0;
> - s->width = -1;
> - s->height = -1;
> s->svgaid = SVGA_ID;
> s->cursor.on = 0;
> s->redraw_fifo_first = 0;
> @@ -1011,9 +1027,13 @@ static void vmsvga_screen_dump(void *opaque,
> const char *filename, bool cswitch)
> return;
> }
>
> - if (s->depth == 32) {
> - DisplaySurface *ds = qemu_create_displaysurface_from(s->width,
> - s->height, 32, ds_get_linesize(s->vga.ds),
> s->vga.vram_ptr);
> + if (ds_get_bits_per_pixel(s->vga.ds) == 32) {
> + DisplaySurface *ds = qemu_create_displaysurface_from(
> + ds_get_width(s->vga.ds),
> + ds_get_height(s->vga.ds),
> + 32,
> + ds_get_linesize(s->vga.ds),
> + s->vga.vram_ptr);
> ppm_save(filename, ds);
> g_free(ds);
> }
> @@ -1098,36 +1118,6 @@ static void vmsvga_init(struct vmsvga_state_s *s,
> vga_common_init(&s->vga);
> vga_init(&s->vga, address_space, io, true);
> vmstate_register(NULL, 0, &vmstate_vga_common, &s->vga);
> -
> - s->depth = ds_get_bits_per_pixel(s->vga.ds);
> - s->bypp = ds_get_bytes_per_pixel(s->vga.ds);
> - switch (s->depth) {
> - case 8:
> - s->wred = 0x00000007;
> - s->wgreen = 0x00000038;
> - s->wblue = 0x000000c0;
> - break;
> - case 15:
> - s->wred = 0x0000001f;
> - s->wgreen = 0x000003e0;
> - s->wblue = 0x00007c00;
> - break;
> - case 16:
> - s->wred = 0x0000001f;
> - s->wgreen = 0x000007e0;
> - s->wblue = 0x0000f800;
> - break;
> - case 24:
> - s->wred = 0x00ff0000;
> - s->wgreen = 0x0000ff00;
> - s->wblue = 0x000000ff;
> - break;
> - case 32:
> - s->wred = 0x00ff0000;
> - s->wgreen = 0x0000ff00;
> - s->wblue = 0x000000ff;
> - break;
> - }
> }
>
> static uint64_t vmsvga_io_read(void *opaque, target_phys_addr_t addr,
> @@ -1175,9 +1165,6 @@ static int pci_vmsvga_initfn(PCIDevice *dev)
> {
> struct pci_vmsvga_state_s *s =
> DO_UPCAST(struct pci_vmsvga_state_s, card, dev);
> - MemoryRegion *iomem;
> -
> - iomem = &s->chip.vga.vram;
>
> s->card.config[PCI_CACHE_LINE_SIZE] = 0x08; /* Cache line
> size */
> s->card.config[PCI_LATENCY_TIMER] = 0x40; /* Latency timer */
> @@ -1187,10 +1174,10 @@ static int pci_vmsvga_initfn(PCIDevice *dev)
> "vmsvga-io", 0x10);
> pci_register_bar(&s->card, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io_bar);
>
> - vmsvga_init(&s->chip, pci_address_space(dev),
> - pci_address_space_io(dev));
> + vmsvga_init(&s->chip, pci_address_space(dev),
> pci_address_space_io(dev));
>
> - pci_register_bar(&s->card, 1, PCI_BASE_ADDRESS_MEM_PREFETCH, iomem);
> + pci_register_bar(&s->card, 1, PCI_BASE_ADDRESS_MEM_PREFETCH,
> + &s->chip.vga.vram);
> pci_register_bar(&s->card, 2, PCI_BASE_ADDRESS_MEM_PREFETCH,
> &s->chip.fifo_ram);
>
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