On Mon, 18 Apr 2011, Arnd Bergmann wrote:
> In v6, it seems you have implemented the full CMD passthrough, if I
> read it correctly. Is there anything still missing?
>
Hi Arnd,
As far as I have tested, the v6 patch does indeed have full CMD
passthrough.
John
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On Mon, 18 Apr 2011, Arnd Bergmann wrote:
> On Wednesday 13 April 2011, John Calixto wrote:
> > Gah! OK, so much for the v5 I just sent then. What do you think about
> > the compat_ioctl that I sent in v2? It means having the extra 32-bit
> > compat structure, but at least all the compat overhea
On Wednesday 13 April 2011, John Calixto wrote:
> > Since the code is limited to ACMD and cannot do arbitrary commands, it's
> > actually
> > not possible to use this for the passthrough scenario, so you should not
> > mention
> > it in the changelog.
> >
> > I would also still advocate somethin
On Wednesday 13 April 2011, John Calixto wrote:
> Gah! OK, so much for the v5 I just sent then. What do you think about
> the compat_ioctl that I sent in v2? It means having the extra 32-bit
> compat structure, but at least all the compat overhead is conditional
> upon CONFIG_COMPAT. If you're
Hi Arnd,
On Wed, 13 Apr 2011, Arnd Bergmann wrote:
> On Monday 11 April 2011, John Calixto wrote:
> > Sending ACMDs from userspace is useful for such things as:
> >
> > - The security application of an SD card (SD Specification, Part 3,
> > Security)
> >
> > - SD passthrough for vi
On Monday 11 April 2011, John Calixto wrote:
> Sending ACMDs from userspace is useful for such things as:
>
> - The security application of an SD card (SD Specification, Part 3,
> Security)
>
> - SD passthrough for virtual machines
>
> Tested on TI PCIxx12 (SDHCI), Sigma Designs SM
On Wed, 13 Apr 2011, Arnd Bergmann wrote:
> On Tuesday 12 April 2011, Michał Mirosław wrote:
> > > + unsigned int cmd_timeout_ms;
> > > + __u64 data_ptr; /* DAT buffer */
> >
> > This will be more natural if you have an anonymous union here:
> > union {
> > __u64 data_ptr_
> > void
On Tuesday 12 April 2011, Michał Mirosław wrote:
> > + unsigned int cmd_timeout_ms;
> > + __u64 data_ptr; /* DAT buffer */
>
> This will be more natural if you have an anonymous union here:
> union {
> __u64 data_ptr_
> void *data_ptr;
> };
No, that really does not work. It's impo
On Tue, 12 Apr 2011, Michał Mirosław wrote:
> 2011/4/11 John Calixto :
> [...]
> > --- /dev/null
> > +++ b/include/linux/mmc/ioctl.h
> > @@ -0,0 +1,32 @@
> > +#ifndef _MMC_IOCTL_H
> > +#define _MMC_IOCTL_H
> > +struct mmc_ioc_cmd {
> > + /* implies direction of data. true = write, false = re
2011/4/11 John Calixto :
[...]
> --- /dev/null
> +++ b/include/linux/mmc/ioctl.h
> @@ -0,0 +1,32 @@
> +#ifndef _MMC_IOCTL_H
> +#define _MMC_IOCTL_H
> +struct mmc_ioc_cmd {
> + /* implies direction of data. true = write, false = read */
> + int write_flag;
> +
> + __u32 opcode;
>
Sending ACMDs from userspace is useful for such things as:
- The security application of an SD card (SD Specification, Part 3,
Security)
- SD passthrough for virtual machines
Tested on TI PCIxx12 (SDHCI), Sigma Designs SMP8652 SoC, TI OMAP3621
SoC, TI OMAP3630 SoC, Samsung S5PC110
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