BMC/Intel-BMC/linux.git/drivers/soc/aspeed, branch dev-5.7

soc: aspeed-lpc-ctrl: Fix printf warning

2020-07-09T07:01:18+00:00

>> drivers/soc/aspeed/aspeed-lpc-ctrl.c:247:17: warning: format '%zu' expects argument of type 'size_t', but argument 3 has type 'resource_size_t' {aka 'unsigned int'} [-Wformat=] Documentation/core-api/printk-formats.rst suggests %pa should work for resouce_size_t, but it did not: %pa[p] 0x01234567 or 0x0123456789abcdef For printing a phys_addr_t type (and its derivatives, such as resource_size_t) which can vary based on build options, regardless of the width of the CPU data path. Instead cast to an integer which works as all aspeed processors are 32-bit. OpenBMC-Staging-Count: 1 Signed-off-by: Joel Stanley

soc: aspeed: xdma: Add reset ioctl

2020-07-08T04:32:05+00:00

Users of the XDMA engine need a way to reset it if something goes wrong. Problems on the host side, or user error, such as incorrect host address, may result in the DMA operation never completing and no way to determine what went wrong. Therefore, add an ioctl to reset the engine so that users can recover in this situation. OpenBMC-Staging-Count: 1 Signed-off-by: Eddie James Acked-by: Andrew Jeffery Signed-off-by: Joel Stanley

soc: aspeed: xdma: Add user interface

2020-07-08T04:32:05+00:00

This commits adds a miscdevice to provide a user interface to the XDMA engine. The interface provides the write operation to start DMA operations. The DMA parameters are passed as the data to the write call. The actual data to transfer is NOT passed through write. Note that both directions of DMA operation are accomplished through the write command; BMC to host and host to BMC. The XDMA driver reserves an area of physical memory for DMA operations, as the XDMA engine is restricted to accessing certain physical memory areas on some platforms. This memory forms a pool from which users can allocate pages for their usage with calls to mmap. The space allocated by a client will be the space used in the DMA operation. For an "upstream" (BMC to host) operation, the data in the client's area will be transferred to the host. For a "downstream" (host to BMC) operation, the host data will be placed in the client's memory area. Poll is also provided in order to determine when the DMA operation is complete for non-blocking IO. OpenBMC-Staging-Count: 1 Signed-off-by: Eddie James Reviewed-by: Andrew Jeffery Signed-off-by: Joel Stanley

soc: aspeed: Add XDMA Engine Driver

2020-07-08T04:32:05+00:00

The XDMA engine embedded in the AST2500 and AST2600 SOCs performs PCI DMA operations between the SOC (acting as a BMC) and a host processor in a server. This commit adds a driver to control the XDMA engine and adds functions to initialize the hardware and memory and start DMA operations. OpenBMC-Staging-Count: 1 Signed-off-by: Eddie James Reviewed-by: Andrew Jeffery Signed-off-by: Joel Stanley

soc: aspeed-lpc-ctrl: LPC to AHB mapping on ast2600

2020-07-08T04:32:03+00:00

The ast2600 disables the mapping of AHB memory regions by default, only allowing the LPC window to point to SPI NOR. In order to point the window to any AHB address, an ast2600 specific bit must be toggled. OpenBMC-Staging-Count: 2 Signed-off-by: Joel Stanley

soc: aspeed: Fail probe of lpc-ctrl if reserved memory is not aligned

2020-07-08T04:32:02+00:00

Alignment is a hardware constraint of the LPC2AHB bridge, and misaligned reserved memory will present as corrupted data. OpenBMC-Staging-Count: 3 Signed-off-by: Andrew Jeffery Signed-off-by: Joel Stanley

soc: aspeed: lpc: Add G6 compatible strings

2020-07-08T04:32:02+00:00

The AST2600(G6) has the same lpc-ctrl and lpc-snoop devices as the AST2500. OpenBMC-Staging-Count: 3 Signed-off-by: Brad Bishop Acked-by: Andrew Jeffery Signed-off-by: Joel Stanley

soc: aspeed: Miscellaneous control interfaces

2020-07-08T04:32:00+00:00

The ASPEED BMC SoCs have many knobs and switches that are sometimes design-specific and often defy any approach to unify them under an existing subsystem. Add a driver to translate a devicetree table into sysfs entries to expose bits and fields for manipulation from userspace. This encompasses concepts from scratch registers to boolean conditions to enable or disable host interface features. OpenBMC-Staging-Count: 10 Signed-off-by: Andrew Jeffery Signed-off-by: Joel Stanley

soc: aspeed: Fix snoop_file_poll()'s return type

2019-12-05T18:10:08+00:00

snoop_file_poll() is defined as returning 'unsigned int' but the .poll method is declared as returning '__poll_t', a bitwise type. Fix this by using the proper return type and using the EPOLL constants instead of the POLL ones, as required for __poll_t. Link: https://lore.kernel.org/r/20191121051851.268726-1-joel@jms.id.au Fixes: 3772e5da4454 ("drivers/misc: Aspeed LPC snoop output using misc chardev") Signed-off-by: Luc Van Oostenryck Reviewed-by: Joel Stanley Reviewed-by: Andrew Jeffery Signed-off-by: Joel Stanley Signed-off-by: Olof Johansson

Merge tag 'aspeed-5.3-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/aspeed into arm/drivers

2019-06-25T12:43:16+00:00

ASPEED SoC updates for 5.3 LPC control driver changes and a fix. * tag 'aspeed-5.3-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/aspeed: soc: aspeed: lpc-ctrl: Fix probe error handling soc: aspeed: lpc-ctrl: make parameter optional Signed-off-by: Olof Johansson