On Sad, 2004-08-07 at 18:40, Jon Smirl wrote:
> We have to copy the whole thing when the driver tells us to. After we
> copy the ROM the hardware is going to use the address decoder for
> something else. There is no safe way to get back to the ROM again other
> than to unload the device driver.
Go
--- Alan Cox <[EMAIL PROTECTED]> wrote:
> On Sad, 2004-08-07 at 17:37, Kronos wrote:
> > You can check and see if the ROM is really big and use vmalloc, if
> not
> > then you use kmalloc (if I remember correctly my radeon has a 4KB
> ROM -
> > vmalloc would be overkill).
>
> You can also read it
On Sad, 2004-08-07 at 17:37, Kronos wrote:
> You can check and see if the ROM is really big and use vmalloc, if not
> then you use kmalloc (if I remember correctly my radeon has a 4KB ROM -
> vmalloc would be overkill).
You can also read it out to userspace in a loop in chunks thus needing
only a
All of the video ROMs I have are 48KB - 64KB in size. But, the copy
code is only triggered by the driver for older PCI cards with minimal
decoding. I am unaware of any video cards with this problem so they
won't make the copy. The only cards I seem to recall having this
problem are some older QLogi
Il Sat, Aug 07, 2004 at 07:59:29AM -0700, Jon Smirl ha scritto:
> *This message was transferred with a trial version of CommuniGate(tm) Pro*
> Maximum size of a standard PCI ROM is 128KB.
This is the maximun that kmalloc can allocate.
> On non-x86 platforms the code will pick the length up from
Maximum size of a standard PCI ROM is 128KB. On non-x86 platforms the
code will pick the length up from the size of the PCI window. That
window has no limit.
On the other hand, map_rom_copy is only called by the device driver for
a board that has minimal PCI decoding. The PCI spec allows the addr
On Fri, 6 Aug 2004, Jon Smirl wrote:
> This patch provides a new kernel API for access ROMs from device
> drivers. If you're working on a driver that uses the ROM (most video
> drivers) please give this patch a try and send some feedback/bugs.
>
> pci_map_rom() - map the rom and provide virtual ad
This patch provides a new kernel API for access ROMs from device
drivers. If you're working on a driver that uses the ROM (most video
drivers) please give this patch a try and send some feedback/bugs.
pci_map_rom() - map the rom and provide virtual address, transparently
return shadow/copy if need
