mirror of
https://github.com/torvalds/linux.git
synced 2024-11-23 12:42:02 +00:00
315491e5d6
The remoteproc framework currently relies on iommu_present() on the bus the device is on, to perform MMU management. However, this logic doesn't scale for multi-arch, especially for processors that do not have an IOMMU. Replace this logic instead by using a h/w capability flag for the presence of IOMMU in the rproc structure. This issue is seen on OMAP platforms when trying to add a remoteproc driver for a small Cortex M3 called the WkupM3 used for suspend / resume management on TI AM335/AM437x SoCs. This processor does not have an MMU. Same is the case with another processor subsystem PRU-ICSS on AM335/AM437x. All these are platform devices, and the current iommu_present check will not scale for the same kernel image to support OMAP4/OMAP5 and AM335/AM437x. The existing platform implementation drivers - OMAP remoteproc, STE Modem remoteproc and DA8xx remoteproc, are updated as well to properly configure the newly added rproc field. Cc: Robert Tivy <rtivy@ti.com> Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Suman Anna <s-anna@ti.com> [small change in the commit title and in a single comment] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> |
||
|---|---|---|
| .. | ||
| da8xx_remoteproc.c | ||
| Kconfig | ||
| Makefile | ||
| omap_remoteproc.c | ||
| omap_remoteproc.h | ||
| remoteproc_core.c | ||
| remoteproc_debugfs.c | ||
| remoteproc_elf_loader.c | ||
| remoteproc_internal.h | ||
| remoteproc_virtio.c | ||
| ste_modem_rproc.c | ||