Re: [Qemu-devel] [PATCH] tc6393xb: non-accelerated FB support

["andrzej zaborowski" <balrogg@gmail.com>]

2008/11/2 Dmitry Baryshkov <dbaryshkov@gmail.com>:
[...]
> As a second thought I've implemented blanking, implemented your
> suggestions. Please take a look at the following patch.

Thanks, this looks better.

>
> From 57cd66fefc31ac18f1f896a8ca53441b01f0d345 Mon Sep 17 00:00:00 2001
> From: Dmitry Baryshkov <dbaryshkov@gmail.com>
> Date: Thu, 11 Sep 2008 04:39:15 +0400
> Subject: [PATCH] tc6393xb: non-accelerated FB support
>
> Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
> ---
>  hw/devices.h           |    4 +-
>  hw/tc6393xb.c          |  120 +++++++++++++++++++++++++++++++++++++++++++++++-
>  hw/tc6393xb_template.h |   72 +++++++++++++++++++++++++++++
>  hw/tosa.c              |   17 +++++--
>  4 files changed, 205 insertions(+), 8 deletions(-)
>  create mode 100644 hw/tc6393xb_template.h
>
> diff --git a/hw/devices.h b/hw/devices.h
> index 45fead9..9572a63 100644
> --- a/hw/devices.h
> +++ b/hw/devices.h
> @@ -66,9 +66,11 @@ void tusb6010_power(struct tusb_s *s, int on);
>
>  /* tc6393xb.c */
>  struct tc6393xb_s;
> -struct tc6393xb_s *tc6393xb_init(uint32_t base, qemu_irq irq);
> +#define TC6393XB_RAM   0x110000 /* amount of ram for Video and USB */
> +struct tc6393xb_s *tc6393xb_init(uint32_t base, qemu_irq irq, DisplayState *ds);
>  void tc6393xb_gpio_out_set(struct tc6393xb_s *s, int line,
>                     qemu_irq handler);
>  qemu_irq *tc6393xb_gpio_in_get(struct tc6393xb_s *s);
> +qemu_irq tc6393xb_l3v_get(struct tc6393xb_s *s);
>
>  #endif
> diff --git a/hw/tc6393xb.c b/hw/tc6393xb.c
> index 2c18984..8a3ff18 100644
> --- a/hw/tc6393xb.c
> +++ b/hw/tc6393xb.c
> @@ -11,6 +11,8 @@
>  #include "pxa.h"
>  #include "devices.h"
>  #include "flash.h"
> +#include "console.h"
> +#include "pixel_ops.h"
>
>  #define        IRQ_TC6393_NAND         0
>  #define        IRQ_TC6393_MMC          1
> @@ -119,6 +121,14 @@ struct tc6393xb_s {
>     uint32_t nand_phys;
>     struct nand_flash_s *flash;
>     struct ecc_state_s ecc;
> +
> +    DisplayState *ds;
> +    QEMUConsole *console;
> +    ram_addr_t vram_addr;
> +    uint32_t scr_width, scr_height; /* in pixels */
> +    qemu_irq l3v;
> +    unsigned blank : 1,
> +             blanked : 1;
>  };
>
>  qemu_irq *tc6393xb_gpio_in_get(struct tc6393xb_s *s)
> @@ -164,6 +174,16 @@ static void tc6393xb_gpio_handler_update(struct tc6393xb_s *s)
>     s->prev_level = level;
>  }
>
> +qemu_irq tc6393xb_l3v_get(struct tc6393xb_s *s) {
> +    return s->l3v;
> +}
> +
> +static void tc6393xb_l3v(void *opaque, int line, int level) {
> +    struct tc6393xb_s *s = opaque;
> +    s->blank = !level;
> +    fprintf(stderr, "L3V: %d\n", level);
> +}
> +
>  static void tc6393xb_sub_irq(void *opaque, int line, int level) {
>     struct tc6393xb_s *s = opaque;
>     uint8_t isr = s->scr.ISR;
> @@ -395,6 +415,85 @@ static void tc6393xb_nand_writeb(struct tc6393xb_s *s, target_phys_addr_t addr,
>                                        (uint32_t) addr, value & 0xff);
>  }
>
> +#define BITS 8
> +#include "tc6393xb_template.h"
> +#define BITS 15
> +#include "tc6393xb_template.h"
> +#define BITS 16
> +#include "tc6393xb_template.h"
> +#define BITS 24
> +#include "tc6393xb_template.h"
> +#define BITS 32
> +#include "tc6393xb_template.h"
> +
> +static void tc6393xb_draw_graphic(struct tc6393xb_s *s, int full_update)
> +{
> +    switch (s->ds->depth) {
> +        case 8:
> +            tc6393xb_draw_graphic8(s);
> +            break;
> +        case 15:
> +            tc6393xb_draw_graphic15(s);
> +            break;
> +        case 16:
> +            tc6393xb_draw_graphic16(s);
> +            break;
> +        case 24:
> +            tc6393xb_draw_graphic24(s);
> +            break;
> +        case 32:
> +            tc6393xb_draw_graphic32(s);
> +            break;
> +        default:
> +            printf("tc6393xb: unknown depth %d\n", s->ds->depth);
> +            return;
> +    }
> +
> +    dpy_update(s->ds, 0, 0, s->scr_width, s->scr_height);
> +}
> +
> +static void tc6393xb_draw_blank(struct tc6393xb_s *s, int full_update)
> +{
> +    int i, w;
> +    uint8_t *d;
> +
> +    if (!full_update)
> +        return;
> +
> +    w = s->scr_width * ((s->ds->depth + 7) >> 3);
> +    d = s->ds->data;
> +    for(i = 0; i < s->scr_height; i++) {
> +        memset(d, 0, w);
> +        d += s->ds->linesize;
> +    }
> +
> +    dpy_update(s->ds, 0, 0, s->scr_width, s->scr_height);
> +}
> +
> +static void tc6393xb_update_display(void *opaque)
> +{
> +    struct tc6393xb_s *s = opaque;
> +    int full_update;
> +
> +    if (s->scr_width == 0 || s->scr_height == 0)
> +        return;
> +
> +    full_update = 0;
> +    if (s->blanked != s->blank) {
> +        s->blanked = s->blank;
> +        full_update = 1;
> +    }
> +    if (s->scr_width != s->ds->width || s->scr_height != s->ds->height) {
> +        qemu_console_resize(s->console, s->scr_width, s->scr_height);
> +        full_update = 1;
> +    }
> +    if (s->blanked)
> +        tc6393xb_draw_blank(s, full_update);
> +    else
> +        tc6393xb_draw_graphic(s, full_update);
> +}
> +
> +
>  static uint32_t tc6393xb_readb(void *opaque, target_phys_addr_t addr) {
>     struct tc6393xb_s *s = opaque;
>     addr -= s->target_base;
> @@ -465,7 +564,7 @@ static void tc6393xb_writel(void *opaque, target_phys_addr_t addr, uint32_t valu
>     tc6393xb_writeb(opaque, addr + 3, value >> 24);
>  }
>
> -struct tc6393xb_s *tc6393xb_init(uint32_t base, qemu_irq irq)
> +struct tc6393xb_s *tc6393xb_init(uint32_t base, qemu_irq irq, DisplayState *ds)
>  {
>     int iomemtype;
>     struct tc6393xb_s *s;
> @@ -485,13 +584,30 @@ struct tc6393xb_s *tc6393xb_init(uint32_t base, qemu_irq irq)
>     s->irq = irq;
>     s->gpio_in = qemu_allocate_irqs(tc6393xb_gpio_set, s, TC6393XB_GPIOS);
>
> +    s->l3v = *qemu_allocate_irqs(tc6393xb_l3v, s, 1);
> +    s->blanked = 1;
> +
>     s->sub_irqs = qemu_allocate_irqs(tc6393xb_sub_irq, s, TC6393XB_NR_IRQS);
>
>     s->flash = nand_init(NAND_MFR_TOSHIBA, 0x76);
>
>     iomemtype = cpu_register_io_memory(0, tc6393xb_readfn,
>                     tc6393xb_writefn, s);
> -    cpu_register_physical_memory(s->target_base, 0x200000, iomemtype);
> +    cpu_register_physical_memory(s->target_base, 0x10000, iomemtype);
> +
> +    if (ds) {
> +        s->ds = ds;
> +        s->vram_addr = qemu_ram_alloc(0x100000);
> +        cpu_register_physical_memory(s->target_base + 0x100000, 0x100000, s->vram_addr);
> +        s->scr_width = 480;
> +        s->scr_height = 640;
> +        s->console = graphic_console_init(ds,
> +                tc6393xb_update_display,
> +                NULL, /* invalidate */
> +                NULL, /* screen_dump */
> +                NULL, /* text_update */
> +                s);
> +    }
>
>     return s;
>  }
> diff --git a/hw/tc6393xb_template.h b/hw/tc6393xb_template.h
> new file mode 100644
> index 0000000..c9d4e03
> --- /dev/null
> +++ b/hw/tc6393xb_template.h
> @@ -0,0 +1,72 @@
> +/*
> + * Toshiba TC6393XB I/O Controller.
> + * Found in Sharp Zaurus SL-6000 (tosa) or some
> + * Toshiba e-Series PDAs.
> + *
> + * FB support code. Based on G364 fb emulator
> + *
> + * Copyright (c) 2007 Hervé Poussineau
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation; either version 2 of
> + * the License, or (at your option) any later version.
> + *
> + * This program 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 General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
> + * MA 02111-1307 USA
> + */
> +
> +#if BITS == 8
> +# define SET_PIXEL(addr, color)        *(uint8_t*)addr = color;
> +#elif BITS == 15 || BITS == 16
> +# define SET_PIXEL(addr, color)        *(uint16_t*)addr = color;
> +#elif BITS == 24
> +# define SET_PIXEL(addr, color)        \
> +    addr[0] = color; addr[1] = (color) >> 8; addr[2] = (color) >> 16;
> +#elif BITS == 32
> +# define SET_PIXEL(addr, color)        *(uint32_t*)addr = color;
> +#else
> +# error unknown bit depth
> +#endif

Hmm.. now when I look at this it triggers an alert because
  *(uint16_t *) addr = color;
and
  addr[0] = coor; addr[1] = (color) >> 8;
do different things on a bigendian host.  But I can't tell offhand
which one we want here...

pxa2xx_template.h and pl110_template.h might have the same problem.

> +
> +
> +static void glue(tc6393xb_draw_graphic, BITS)(struct tc6393xb_s *s)
> +{
> +    int i;
> +    int w_display;
> +    uint16_t *data_buffer;
> +    uint8_t *data_display;
> +
> +    data_buffer = (uint16_t*)(phys_ram_base + s->vram_addr);
> +    w_display = s->scr_width * BITS / 8;
> +    data_display = s->ds->data;
> +    for(i = 0; i < s->scr_height; i++) {
> +#if (BITS == 16)
> +       memcpy(data_display, data_buffer, s->scr_width * 2);
> +       data_buffer += s->scr_width;
> +        data_display += s->ds->linesize;
> +#else
> +       int j;
> +        for (j = 0; j < s->scr_width; j++, data_display += BITS / 8, data_buffer++) {
> +            uint16_t color = *data_buffer;
> +           uint32_t dest_color = glue(rgb_to_pixel, BITS)(
> +                           ((color & 0xf800) * 0x108) >> 11,
> +                           ((color & 0x7e0) * 0x41) >> 9,
> +                           ((color & 0x1f) * 0x21) >> 2
> +                           );
> +           SET_PIXEL(data_display, dest_color);
> +        }
> +#endif
> +    }
> +}
> +
> +#undef BITS
> +#undef SET_PIXEL
> +
> diff --git a/hw/tosa.c b/hw/tosa.c
> index e66ab16..a54390f 100644
> --- a/hw/tosa.c
> +++ b/hw/tosa.c
> @@ -38,6 +38,7 @@
>  #define TOSA_GPIO_BT_LED               (TOSA_SCOOP_JC_GPIO_BASE + 0)
>  #define TOSA_GPIO_NOTE_LED             (TOSA_SCOOP_JC_GPIO_BASE + 1)
>  #define TOSA_GPIO_CHRG_ERR_LED         (TOSA_SCOOP_JC_GPIO_BASE + 2)
> +#define TOSA_GPIO_TC6393XB_L3V_ON      (TOSA_SCOOP_JC_GPIO_BASE + 5)
>  #define TOSA_GPIO_WLAN_LED             (TOSA_SCOOP_JC_GPIO_BASE + 7)
>
>  #define        DAC_BASE        0x4e
> @@ -85,7 +86,8 @@ static void tosa_out_switch(void *opaque, int line, int level)
>
>  static void tosa_gpio_setup(struct pxa2xx_state_s *cpu,
>                 struct scoop_info_s *scp0,
> -                struct scoop_info_s *scp1)
> +                struct scoop_info_s *scp1,
> +                struct tc6393xb_s *tmio)
>  {
>     qemu_irq *outsignals = qemu_allocate_irqs(tosa_out_switch, cpu, 4);
>     /* MMC/SD host */
> @@ -109,6 +111,8 @@ static void tosa_gpio_setup(struct pxa2xx_state_s *cpu,
>     scoop_gpio_out_set(scp1, TOSA_GPIO_NOTE_LED, outsignals[1]);
>     scoop_gpio_out_set(scp1, TOSA_GPIO_CHRG_ERR_LED, outsignals[2]);
>     scoop_gpio_out_set(scp1, TOSA_GPIO_WLAN_LED, outsignals[3]);
> +
> +    scoop_gpio_out_set(scp1, TOSA_GPIO_TC6393XB_L3V_ON, tc6393xb_l3v_get(tmio));
>  }
>
>  static uint32_t tosa_ssp_read(void *opaque) {
> @@ -197,9 +201,10 @@ static void tosa_init(ram_addr_t ram_size, int vga_ram_size,
>                 const char *initrd_filename, const char *cpu_model)
>  {
>     struct pxa2xx_state_s *cpu;
> +    struct tc6393xb_s *tmio;
>     struct scoop_info_s *scp0, *scp1;
>
> -    if (ram_size < (TOSA_RAM + TOSA_ROM + PXA2XX_INTERNAL_SIZE)) {
> +    if (ram_size < (TOSA_RAM + TOSA_ROM + PXA2XX_INTERNAL_SIZE + TC6393XB_RAM)) {
>         fprintf(stderr, "This platform requires %i bytes of memory\n",
>                 TOSA_RAM + TOSA_ROM + PXA2XX_INTERNAL_SIZE);
>         exit(1);
> @@ -213,12 +218,14 @@ static void tosa_init(ram_addr_t ram_size, int vga_ram_size,
>     cpu_register_physical_memory(0, TOSA_ROM,
>                     qemu_ram_alloc(TOSA_ROM) | IO_MEM_ROM);
>
> -    tc6393xb_init(0x10000000, pxa2xx_gpio_in_get(cpu->gpio)[TOSA_GPIO_TC6393XB_INT]);
> +    tmio = tc6393xb_init(0x10000000,
> +            pxa2xx_gpio_in_get(cpu->gpio)[TOSA_GPIO_TC6393XB_INT],
> +            ds);
>
>     scp0 = scoop_init(cpu, 0, 0x08800000);
>     scp1 = scoop_init(cpu, 1, 0x14800040);
>
> -    tosa_gpio_setup(cpu, scp0, scp1);
> +    tosa_gpio_setup(cpu, scp0, scp1, tmio);
>
>     tosa_microdrive_attach(cpu);
>
> @@ -239,5 +246,5 @@ QEMUMachine tosapda_machine = {
>     .name = "tosa",
>     .desc = "Tosa PDA (PXA255)",
>     .init = tosa_init,
> -    .ram_require = TOSA_RAM + TOSA_ROM + PXA2XX_INTERNAL_SIZE + RAMSIZE_FIXED,
> +    .ram_require = TOSA_RAM + TOSA_ROM + PXA2XX_INTERNAL_SIZE + RAMSIZE_FIXED + TC6393XB_RAM,
>  };
> --
> 1.5.6.5
>
>
> --
> With best wishes
> Dmitry
>
>