[Openvortex-dev] Re: [Alsa-devel] Re: [ALSA - driver 0001138]: errors when installing au8820 modules

[Alien]

I don't think it'll be faster, gcc -O2 will have changed it accordingly 
anyway, without optimization it might be faster, but the thing is that it 
just looks cleaner...

Op woensdag 8 juni 2005 11:06, schreef Raymond:
> au8830 can be loaded after I change "unsigned long __iomem *mmio" to
> "void __iomem *mmio" on my 32 bits machine.
>
> How can I obtain the disassembly of snd-au8830.o to prove that it run
> faster than before ( without bitshift ) ?
>
> alsa-kernel/pci/au88x0/au88x0.h
>
> @@ -41,8 +41,8 @@
>
>   #define        VORTEX_DMA_MASK 0xffffffff
>
>
> -#define        hwread(x,y) readl((x)+((y)>>2))
> -#define        hwwrite(x,y,z) writel((z),(x)+((y)>>2))
> +#define        hwread(x,y) readl((x)+(y))
> +#define        hwwrite(x,y,z) writel((z),(x)+(y))
>
> @@ -172,7 +172,7 @@
>
>          /* PCI hardware resources */
>          unsigned long io;
> -       unsigned long __iomem *mmio;
> +       void __iomem *mmio;
>          unsigned int irq;
>          spinlock_t lock;
>
>
>
> I don't have any MPU401 device to test this change.
>
>
> alsa-kernel/pci/au88x0/au88x0_mpu401.c
> @@ -95,7 +95,7 @@
>                  return temp;
>          }
>   #else
> -       port = (unsigned long)(vortex->mmio + (VORTEX_MIDI_DATA >> 2));
> +       port = (unsigned long)(vortex->mmio + VORTEX_MIDI_DATA);
>          if ((temp =
>               snd_mpu401_uart_new(vortex->card, 0, MPU401_HW_AUREAL, port,
>                                   1, 0, 0, &rmidi)) != 0) {
> @@ -105,7 +105,7 @@
>                  return temp;
>          }
>          mpu = rmidi->private_data;
> -       mpu->cport = (unsigned long)(vortex->mmio + (VORTEX_MIDI_CMD >>
> 2)); +       mpu->cport = (unsigned long)(vortex->mmio + VORTEX_MIDI_CMD);
> #endif
>          vortex->rmidi = rmidi;
>          return 0;
>
>
> Is there any reason to make this change ?
>
> alsa-kernel/pci/au88x0/au88x0.c
> @@ -144,15 +144,18 @@
>          // check PCI availability (DMA).
>          if ((err = pci_enable_device(pci)) < 0)
>                  return err;
> -       if (!pci_dma_supported(pci, VORTEX_DMA_MASK)) {
> +        if (pci_set_dma_mask(pci, VORTEX_DMA_MASK) < 0 ||
> +               pci_set_consistent_dma_mask(pci, VORTEX_DMA_MASK) < 0) {
>                  printk(KERN_ERR "error to set DMA mask\n");
> +               pci_disable_device(pci);
>                  return -ENXIO;
>          }
> -       pci_set_dma_mask(pci, VORTEX_DMA_MASK);
>
>          chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
> -       if (chip == NULL)
> +       if (chip == NULL) {
> +               pci_disable_device(pci);
>                  return -ENOMEM;
> +       }
>
>          chip->card = card;
>
> @@ -202,6 +205,8 @@
>                  goto alloc_out;
>          }
>
> +       snd_card_set_dev(card, &pci->dev);
> +
>          *rchip = chip;
>
>          return 0;
>
> Those changes in au88x0_eq.h and au88x0_eqdata.c seem WRONG.
>
> -       unsigned int *this00;   /*CAsp4HwIO */
> +       u32 ptr_this00;         /*CAsp4HwIO */
>
>
> 2 * 10 seem related to the 10-bands stereo EQ.
>
>
> -       u16 this14[32];         /* SetLeftGainsTarget: Left (and right?)
> +       u16 this14_array[32];   /* SetLeftGainsTarget: Left (and right?)
>
>          /* Set gains. */
> -       memset(eq->this14, 0, 2 * 10);
> +       memset(eq->this14_array, 0, sizeof(eq->this14_array));
>
>
>
>
> -static long eq_levels[32] = {
> +static u16 eq_levels[64] = {
> +       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
> +       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
> +       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
> +       0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
>
>
> http://lists.nongnu.org/archive/html/openvortex-dev/2003-12/msg00007.html
>
> There is no kcontrol to change vortex->xt_mode for speaker wide, speaker
> narrow, speaker Diamond , headphones to test the Crosstalk canceler
>
> long -> s32
> short -> s16
>
> alsa-kernel/pci/au88x0/au88x0_xtalk.h
> @@ -39,11 +39,11 @@
>   #define XT_SPEAKER1            3
>   #define XT_DIAMOND             4
>
> -typedef long xtalk_dline_t[XTDLINE_SZ];
> -typedef short xtalk_gains_t[XTGAINS_SZ];
> -typedef short xtalk_instate_t[XTINST_SZ];
> -typedef short xtalk_coefs_t[5][5];
> -typedef short xtalk_state_t[5][4];
> +typedef u32 xtalk_dline_t[XTDLINE_SZ];
> +typedef u16 xtalk_gains_t[XTGAINS_SZ];
> +typedef u16 xtalk_instate_t[XTINST_SZ];
> +typedef u16 xtalk_coefs_t[5][5];
> +typedef u16 xtalk_state_t[5][4];
>
> Takashi Iwai wrote:
> > At Tue, 7 Jun 2005 17:16:02 +0200,
> >
> > Alien wrote:
> >>[1  <text/plain; iso-8859-1 (quoted-printable)>]
> >>
> >>Op dinsdag 7 juni 2005 17:05, schreef Raymond:
> >>>The patch (diff11.diff) cause segmenation fault on my 32bit machine
> >>>during /etc/init.d/alsasound start
> >>>
> >>>http://savannah.nongnu.org/patch/?func=detailitem&item_id=3948
> >>>
> >>>Do anyone know why readl() and writel() behave different in i386
> >>>(32bits) and AMD64 (64bits) ?
> >>>
> >>>http://sourceforge.net/mailarchive/message.php?msg_id=10773530
> >>>
> >>>
> >>>#ifndef CONFIG_X86_64
> >>>
> >>>#define        hwread(x,y) readl((x)+((y)>>2))
> >>>#define        hwwrite(x,y,z) writel((z),(x)+((y)>>2))
> >>>
> >>>#else
> >>>
> >>>#define        hwread(x,y) readl((x)+(y))
> >>>#define        hwwrite(x,y,z) writel((z),(x)+(y))
> >>>
> >>>#endif
> >>
> >>that doesn't look good, unless the mmio is void* in 32bit and unsigned
> >> long* in x86_64...
> >>
> >>'unsigned long* mmio' should be preferred and together with '#define
> >>hwread(x,y) readl((x)+(y))' , this works for both platforms
> >
> > I guess using "unsigned long" for both architectures is broken, too.
> > Should be "u32" to be arch-independent.
>
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