[Qemu-devel] Re: [PATCH] musicpal: Reorganize IO memory handling

[Jan Kiszka <jan.kiszka@web.de>]

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Jan Kiszka wrote:
> The new MMIO interface requires non-overlapping slots. Reorganize the
> musicpal accordingly, fixing a regression for the Ethernet emulation.
> 
> Signed-off-by: Jan Kiszka <jan.kiszka@web.de>
> ---
> 
>  hw/musicpal.c |  189 ++++++++++++++++++++++++++++++++++++++++++---------------
>  1 files changed, 139 insertions(+), 50 deletions(-)
> 
> diff --git a/hw/musicpal.c b/hw/musicpal.c
> index 75c8887..03f40d3 100644
> --- a/hw/musicpal.c
> +++ b/hw/musicpal.c
> @@ -20,12 +20,21 @@
>  #include "audio/audio.h"
>  #include "i2c.h"
>  
> +#define MP_MISC_BASE            0x80002000
> +#define MP_MISC_SIZE            0x00001000
> +
>  #define MP_ETH_BASE             0x80008000
>  #define MP_ETH_SIZE             0x00001000
>  
> +#define MP_WLAN_BASE            0x8000C000
> +#define MP_WLAN_SIZE            0x00000800
> +
>  #define MP_UART1_BASE           0x8000C840
>  #define MP_UART2_BASE           0x8000C940
>  
> +#define MP_GPIO_BASE            0x8000D000
> +#define MP_GPIO_SIZE            0x00001000
> +
>  #define MP_FLASHCFG_BASE        0x90006000
>  #define MP_FLASHCFG_SIZE        0x00001000
>  
> @@ -429,7 +438,7 @@ static CPUWriteMemoryFunc *musicpal_audio_writefn[] = {
>      musicpal_audio_write
>  };
>  
> -static i2c_interface *musicpal_audio_init(uint32_t base, qemu_irq irq)
> +static i2c_interface *musicpal_audio_init(qemu_irq irq)
>  {
>      AudioState *audio;
>      musicpal_audio_state *s;
> @@ -457,14 +466,14 @@ static i2c_interface *musicpal_audio_init(uint32_t base, qemu_irq irq)
>  
>      iomemtype = cpu_register_io_memory(0, musicpal_audio_readfn,
>                         musicpal_audio_writefn, s);
> -    cpu_register_physical_memory(base, MP_AUDIO_SIZE, iomemtype);
> +    cpu_register_physical_memory(MP_AUDIO_BASE, MP_AUDIO_SIZE, iomemtype);
>  
>      qemu_register_reset(musicpal_audio_reset, s);
>  
>      return i2c;
>  }
>  #else  /* !HAS_AUDIO */
> -static i2c_interface *musicpal_audio_init(uint32_t base, qemu_irq irq)
> +static i2c_interface *musicpal_audio_init(qemu_irq irq)
>  {
>      return NULL;
>  }
> @@ -899,7 +908,7 @@ static CPUWriteMemoryFunc *musicpal_lcd_writefn[] = {
>      musicpal_lcd_write
>  };
>  
> -static void musicpal_lcd_init(uint32_t base)
> +static void musicpal_lcd_init(void)
>  {
>      musicpal_lcd_state *s;
>      int iomemtype;
> @@ -907,7 +916,7 @@ static void musicpal_lcd_init(uint32_t base)
>      s = qemu_mallocz(sizeof(musicpal_lcd_state));
>      iomemtype = cpu_register_io_memory(0, musicpal_lcd_readfn,
>                                         musicpal_lcd_writefn, s);
> -    cpu_register_physical_memory(base, MP_LCD_SIZE, iomemtype);
> +    cpu_register_physical_memory(MP_LCD_BASE, MP_LCD_SIZE, iomemtype);
>  
>      s->ds = graphic_console_init(lcd_refresh, lcd_invalidate,
>                                   NULL, NULL, s);
> @@ -1195,20 +1204,102 @@ static void mv88w8618_flashcfg_init(uint32_t base)
>      cpu_register_physical_memory(base, MP_FLASHCFG_SIZE, iomemtype);
>  }
>  
> -/* Various registers in the 0x80000000 domain */
> -#define MP_BOARD_REVISION       0x2018
> +/* Misc register offsets */
> +#define MP_MISC_BOARD_REVISION  0x18
> +
> +#define MP_BOARD_REVISION       0x31
> +
> +static uint32_t musicpal_misc_read(void *opaque, target_phys_addr_t offset)
> +{
> +    switch (offset) {
> +    case MP_MISC_BOARD_REVISION:
> +        return MP_BOARD_REVISION;
> +
> +    default:
> +        return 0;
> +    }
> +}
> +
> +static void musicpal_misc_write(void *opaque, target_phys_addr_t offset,
> +                                uint32_t value)
> +{
> +}
> +
> +static CPUReadMemoryFunc *musicpal_misc_readfn[] = {
> +    musicpal_misc_read,
> +    musicpal_misc_read,
> +    musicpal_misc_read,
> +};
> +
> +static CPUWriteMemoryFunc *musicpal_misc_writefn[] = {
> +    musicpal_misc_write,
> +    musicpal_misc_write,
> +    musicpal_misc_write,
> +};
> +
> +static void musicpal_misc_init(void)
> +{
> +    int iomemtype;
> +
> +    iomemtype = cpu_register_io_memory(0, musicpal_misc_readfn,
> +                                       musicpal_misc_writefn, NULL);
> +    cpu_register_physical_memory(MP_MISC_BASE, MP_MISC_SIZE, iomemtype);
> +}
> +
> +/* WLAN register offsets */
> +#define MP_WLAN_MAGIC1          0x11c
> +#define MP_WLAN_MAGIC2          0x124
> +
> +static uint32_t mv88w8618_wlan_read(void *opaque, target_phys_addr_t offset)
> +{
> +    switch (offset) {
> +    /* Workaround to allow loading the binary-only wlandrv.ko crap
> +     * from the original Freecom firmware. */
> +    case MP_WLAN_MAGIC1:
> +        return ~3;
> +    case MP_WLAN_MAGIC2:
> +        return -1;
> +
> +    default:
> +        return 0;
> +    }
> +}
> +
> +static void mv88w8618_wlan_write(void *opaque, target_phys_addr_t offset,
> +                                 uint32_t value)
> +{
> +}
> +
> +static CPUReadMemoryFunc *mv88w8618_wlan_readfn[] = {
> +    mv88w8618_wlan_read,
> +    mv88w8618_wlan_read,
> +    mv88w8618_wlan_read,
> +};
> +
> +static CPUWriteMemoryFunc *mv88w8618_wlan_writefn[] = {
> +    mv88w8618_wlan_write,
> +    mv88w8618_wlan_write,
> +    mv88w8618_wlan_write,
> +};
> +
> +static void mv88w8618_wlan_init(uint32_t base)
> +{
> +    int iomemtype;
>  
> -#define MP_WLAN_MAGIC1          0xc11c
> -#define MP_WLAN_MAGIC2          0xc124
> +    iomemtype = cpu_register_io_memory(0, mv88w8618_wlan_readfn,
> +                                       mv88w8618_wlan_writefn, NULL);
> +    cpu_register_physical_memory(base, MP_WLAN_SIZE, iomemtype);
> +}
>  
> -#define MP_GPIO_OE_LO           0xd008
> -#define MP_GPIO_OUT_LO          0xd00c
> -#define MP_GPIO_IN_LO           0xd010
> -#define MP_GPIO_ISR_LO          0xd020
> -#define MP_GPIO_OE_HI           0xd508
> -#define MP_GPIO_OUT_HI          0xd50c
> -#define MP_GPIO_IN_HI           0xd510
> -#define MP_GPIO_ISR_HI          0xd520
> +/* GPIO register offsets */
> +#define MP_GPIO_OE_LO           0x008
> +#define MP_GPIO_OUT_LO          0x00c
> +#define MP_GPIO_IN_LO           0x010
> +#define MP_GPIO_ISR_LO          0x020
> +#define MP_GPIO_OE_HI           0x508
> +#define MP_GPIO_OUT_HI          0x50c
> +#define MP_GPIO_IN_HI           0x510
> +#define MP_GPIO_ISR_HI          0x520
>  
>  /* GPIO bits & masks */
>  #define MP_GPIO_WHEEL_VOL       (1 << 8)
> @@ -1227,12 +1318,9 @@ static void mv88w8618_flashcfg_init(uint32_t base)
>  /* LCD brightness bits in GPIO_OE_HI */
>  #define MP_OE_LCD_BRIGHTNESS    0x0007
>  
> -static uint32_t musicpal_read(void *opaque, target_phys_addr_t offset)
> +static uint32_t musicpal_gpio_read(void *opaque, target_phys_addr_t offset)
>  {
>      switch (offset) {
> -    case MP_BOARD_REVISION:
> -        return 0x0031;
> -
>      case MP_GPIO_OE_HI: /* used for LCD brightness control */
>          return lcd_brightness & MP_OE_LCD_BRIGHTNESS;
>  
> @@ -1254,20 +1342,13 @@ static uint32_t musicpal_read(void *opaque, target_phys_addr_t offset)
>      case MP_GPIO_ISR_HI:
>          return gpio_isr >> 16;
>  
> -    /* Workaround to allow loading the binary-only wlandrv.ko crap
> -     * from the original Freecom firmware. */
> -    case MP_WLAN_MAGIC1:
> -        return ~3;
> -    case MP_WLAN_MAGIC2:
> -        return -1;
> -
>      default:
>          return 0;
>      }
>  }
>  
> -static void musicpal_write(void *opaque, target_phys_addr_t offset,
> -                           uint32_t value)
> +static void musicpal_gpio_write(void *opaque, target_phys_addr_t offset,
> +                                uint32_t value)
>  {
>      switch (offset) {
>      case MP_GPIO_OE_HI: /* used for LCD brightness control */
> @@ -1290,6 +1371,27 @@ static void musicpal_write(void *opaque, target_phys_addr_t offset,
>      }
>  }
>  
> +static CPUReadMemoryFunc *musicpal_gpio_readfn[] = {
> +    musicpal_gpio_read,
> +    musicpal_gpio_read,
> +    musicpal_gpio_read,
> +};
> +
> +static CPUWriteMemoryFunc *musicpal_gpio_writefn[] = {
> +    musicpal_gpio_write,
> +    musicpal_gpio_write,
> +    musicpal_gpio_write,
> +};
> +
> +static void musicpal_gpio_init(void)
> +{
> +    int iomemtype;
> +
> +    iomemtype = cpu_register_io_memory(0, musicpal_gpio_readfn,
> +                                       musicpal_gpio_writefn, NULL);
> +    cpu_register_physical_memory(MP_GPIO_BASE, MP_GPIO_SIZE, iomemtype);
> +}
> +
>  /* Keyboard codes & masks */
>  #define KEY_RELEASED            0x80
>  #define KEY_CODE                0x7f
> @@ -1370,18 +1472,6 @@ static void musicpal_key_event(void *opaque, int keycode)
>      kbd_extended = 0;
>  }
>  
> -static CPUReadMemoryFunc *musicpal_readfn[] = {
> -    musicpal_read,
> -    musicpal_read,
> -    musicpal_read,
> -};
> -
> -static CPUWriteMemoryFunc *musicpal_writefn[] = {
> -    musicpal_write,
> -    musicpal_write,
> -    musicpal_write,
> -};
> -
>  static struct arm_boot_info musicpal_binfo = {
>      .loader_start = 0x0,
>      .board_id = 0x20e,
> @@ -1395,7 +1485,6 @@ static void musicpal_init(ram_addr_t ram_size, int vga_ram_size,
>      CPUState *env;
>      qemu_irq *pic;
>      int index;
> -    int iomemtype;
>      unsigned long flash_size;
>  
>      if (!cpu_model)
> @@ -1415,11 +1504,6 @@ static void musicpal_init(ram_addr_t ram_size, int vga_ram_size,
>      sram_off = qemu_ram_alloc(MP_SRAM_SIZE);
>      cpu_register_physical_memory(MP_SRAM_BASE, MP_SRAM_SIZE, sram_off);
>  
> -    /* Catch various stuff not handled by separate subsystems */
> -    iomemtype = cpu_register_io_memory(0, musicpal_readfn,
> -                                       musicpal_writefn, env);
> -    cpu_register_physical_memory(0x80000000, 0x10000, iomemtype);
> -
>      pic = mv88w8618_pic_init(MP_PIC_BASE, pic[ARM_PIC_CPU_IRQ]);
>      mv88w8618_pit_init(MP_PIT_BASE, pic, MP_TIMER1_IRQ);
>  
> @@ -1454,13 +1538,18 @@ static void musicpal_init(ram_addr_t ram_size, int vga_ram_size,
>      }
>      mv88w8618_flashcfg_init(MP_FLASHCFG_BASE);
>  
> -    musicpal_lcd_init(MP_LCD_BASE);
> +    musicpal_lcd_init();
>  
>      qemu_add_kbd_event_handler(musicpal_key_event, pic[MP_GPIO_IRQ]);
>  
>      mv88w8618_eth_init(&nd_table[0], MP_ETH_BASE, pic[MP_ETH_IRQ]);
>  
> -    mixer_i2c = musicpal_audio_init(MP_AUDIO_BASE, pic[MP_AUDIO_IRQ]);
> +    mixer_i2c = musicpal_audio_init(pic[MP_AUDIO_IRQ]);
> +
> +    mv88w8618_wlan_init(MP_WLAN_BASE);
> +
> +    musicpal_misc_init();
> +    musicpal_gpio_init();
>  
>      musicpal_binfo.ram_size = MP_RAM_DEFAULT_SIZE;
>      musicpal_binfo.kernel_filename = kernel_filename;
> 
> 
> 

Could anyone out there apply this patch? Then please push it to both
trunk and stable as it is primarily a bug fix.

Thanks,
Jan


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