kernel/linux.git/drivers/dma/ptdma, branch v5.15.7Linux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=v5.15.72021-08-29T13:44:21+00:00dmaengine: ptdma: remove PT_OFFSET to avoid redefnition2021-08-29T13:44:21+00:00Sanjay R Mehtasanju.mehta@amd.com2021-08-28T19:28:28+00:00urn:sha1:e037e36c35c2587879ba6db90e626ffd9d3e2618
Building on ARCH=um causes a "redefined" warning, so remove this
PT_OFFSET macro to avoid the warning.
drivers/dma/ptdma/ptdma.h:34: warning: "PT_OFFSET" redefined
34 | #define PT_OFFSET 0x0
|
In file included from ./arch/um/include/asm/thread_info.h:17,
from ./include/linux/thread_info.h:60,
from ./include/asm-generic/preempt.h:5,
from ./arch/um/include/generated/asm/preempt.h:1,
from ./include/linux/preempt.h:78,
from ./include/linux/spinlock.h:55,
from ./include/linux/wait.h:9,
from ./include/linux/wait_bit.h:8,
from ./include/linux/fs.h:6,
from ./include/linux/debugfs.h:15,
from drivers/dma/ptdma/ptdma-debugfs.c:12:
./arch/x86/um/shared/sysdep/ptrace_user.h:4: note: this is the location of the previous definition
4 | #define PT_OFFSET(r) ((r) * sizeof(long))
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 2a99524459ce ("dmaengine: ptdma: Initial driver for the AMD PTDMA")
Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com>
Link: https://lore.kernel.org/r/1630178908-54973-1-git-send-email-Sanju.Mehta@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
dmaengine: ptdma: Add debugfs entries for PTDMA2021-08-29T13:44:20+00:00Sanjay R Mehtasanju.mehta@amd.com2021-08-17T13:55:59+00:00urn:sha1:e2fb2e2a33fae6009bf68574a7eec8fcfdf9c78e
Expose data about the configuration and operation of the
PTDMA through debugfs entries: device name, capabilities,
configuration, statistics.
Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com>
Link: https://lore.kernel.org/r/1629208559-51964-4-git-send-email-Sanju.Mehta@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
dmaengine: ptdma: register PTDMA controller as a DMA resource2021-08-29T13:44:20+00:00Sanjay R Mehtasanju.mehta@amd.com2021-08-17T13:55:58+00:00urn:sha1:b0b4a6b10577a2e7eaf36f46781f4759b03321a7
Register ptdma queue to Linux dmaengine framework as general-purpose
DMA channels.
Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com>
Link: https://lore.kernel.org/r/1629208559-51964-3-git-send-email-Sanju.Mehta@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
dmaengine: ptdma: Initial driver for the AMD PTDMA2021-08-29T13:44:20+00:00Sanjay R Mehtasanju.mehta@amd.com2021-08-17T13:55:57+00:00urn:sha1:fa5d823b16a9442d609617abeec31da8b6afa224
Add support for AMD PTDMA controller. It performs high-bandwidth
memory to memory and IO copy operation. Device commands are managed
via a circular queue of 'descriptors', each of which specifies source
and destination addresses for copying a single buffer of data.
Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com>
Link: https://lore.kernel.org/r/1629208559-51964-2-git-send-email-Sanju.Mehta@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>