kernel.git/drivers/firmware/qcom_scm.c, branch linux-5.6.y

firmware: qcom_scm: Dynamically support SMCCC and legacy conventions

2020-01-08T06:14:43Z

Dynamically support SMCCCC and legacy conventions by detecting which convention to use at runtime. qcom_scm_call_atomic and qcom_scm_call can then be moved in qcom_scm.c and use underlying convention backend as appropriate. Thus, rename qcom_scm-64,-32 to reflect that they are backends for -smc and -legacy, respectively. Also add support for making SCM calls earlier than when SCM driver probes to support use cases such as qcom_scm_set_cold_boot_addr. Support is added by lazily initializing the convention and guarding the query with a spin lock. The limitation of these early SCM calls is that they cannot use DMA, as in the case of >4 arguments for SMC convention and any non-atomic call for legacy convention. Tested-by: Brian Masney # arm32 Tested-by: Stephan Gerhold Signed-off-by: Elliot Berman Link: https://lore.kernel.org/r/1578431066-19600-18-git-send-email-eberman@codeaurora.org Signed-off-by: Bjorn Andersson

firmware: qcom_scm: Remove thin wrappers

2020-01-08T06:14:40Z

qcom_scm-32 and qcom_scm-64 implementations are nearly identical, so make qcom_scm_call and qcom_scm_call_atomic unique to each and the SCM descriptor creation common to each. There are the following catches: - __qcom_scm_is_call_available is still in each -32,-64 implementation as the argument is unique to each convention - For some functions, only one implementation was provided in -32 or -64. The actual implementation was moved into qcom_scm.c - io_writel and io_readl in -64 were non-atomic calls and in -32 they were. Atomic is the better option, so use it. Tested-by: Brian Masney # arm32 Tested-by: Stephan Gerhold Signed-off-by: Elliot Berman Link: https://lore.kernel.org/r/1578431066-19600-17-git-send-email-eberman@codeaurora.org Signed-off-by: Bjorn Andersson

firmware: qcom_scm: Order functions, definitions by service/command

2020-01-08T06:14:38Z

Definitions throughout qcom_scm are loosely grouped and loosely ordered. Sort all the functions/definitions by service ID/command ID to improve sanity when needing to add new functionality to this driver. Acked-by: Bjorn Andersson Tested-by: Brian Masney # arm32 Tested-by: Stephan Gerhold Signed-off-by: Elliot Berman Link: https://lore.kernel.org/r/1578431066-19600-16-git-send-email-eberman@codeaurora.org Signed-off-by: Bjorn Andersson

firmware: qcom_scm-32: Add device argument to atomic calls

2020-01-08T06:14:35Z

Add unused "device" parameter to reduce merge friction between SMCCC and legacy based conventions in an upcoming patch. Tested-by: Brian Masney # arm32 Tested-by: Stephan Gerhold Signed-off-by: Elliot Berman Link: https://lore.kernel.org/r/1578431066-19600-15-git-send-email-eberman@codeaurora.org Signed-off-by: Bjorn Andersson

firmware: qcom_scm: Apply consistent naming scheme to command IDs

2020-01-08T06:14:01Z

Create a consistent naming scheme for command IDs. The scheme is QCOM_SCM_##svc_##cmd. Remove unused macros QCOM_SCM_FLAG_HLOS, QCOM_SCM_FLAG_COLDBOOT_MC, QCOM_SCM_FLAG_WARMBOOT_MC, QCOM_SCM_CMD_CORE_HOTPLUGGED, and QCOM_SCM_BOOT_ADDR_MC. Reviewed-by: Bjorn Andersson Reviewed-by: Vinod Koul Reviewed-by: Stephen Boyd Tested-by: Brian Masney # arm32 Tested-by: Stephan Gerhold Signed-off-by: Elliot Berman Link: https://lore.kernel.org/r/1578431066-19600-3-git-send-email-eberman@codeaurora.org Signed-off-by: Bjorn Andersson

Merge tag 'drm-next-2019-12-06' of git://anongit.freedesktop.org/drm/drm

2019-12-06T18:28:09Z

Pull more drm updates from Dave Airlie: "Rob pointed out I missed his pull request for msm-next, it's been in next for a while outside of my tree so shouldn't cause any unexpected issues, it has some OCMEM support in drivers/soc that is acked by other maintainers as it's outside my tree. Otherwise it's a usual fixes pull, i915, amdgpu, the main ones, with some tegra, omap, mgag200 and one core fix. Summary: msm-next: - OCMEM support for a3xx and a4xx GPUs. - a510 support + display support core: - mst payload deletion fix i915: - uapi alignment fix - fix for power usage regression due to security fixes - change default preemption timeout to 640ms from 100ms - EHL voltage level display fixes - TGL DGL PHY fix - gvt - MI_ATOMIC cmd parser fix, CFL non-priv warning - CI spotted deadlock fix - EHL port D programming fix amdgpu: - VRAM lost fixes on BACO for CI/VI - navi14 DC fixes - misc SR-IOV, gfx10 fixes - XGMI fixes for arcturus - SRIOV fixes amdkfd: - KFD on ppc64le enabled - page table optimisations radeon: - fix for r1xx/2xx register checker. tegra: - displayport regression fixes - DMA API regression fixes mgag200: - fix devices that can't scanout except at 0 addr omap: - fix dma_addr refcounting" * tag 'drm-next-2019-12-06' of git://anongit.freedesktop.org/drm/drm: (100 commits) drm/dp_mst: Correct the bug in drm_dp_update_payload_part1() drm/omap: fix dma_addr refcounting drm/tegra: Run hub cleanup on ->remove() drm/tegra: sor: Make the +5V HDMI supply optional drm/tegra: Silence expected errors on IOMMU attach drm/tegra: vic: Export module device table drm/tegra: sor: Implement system suspend/resume drm/tegra: Use proper IOVA address for cursor image drm/tegra: gem: Remove premature import restrictions drm/tegra: gem: Properly pin imported buffers drm/tegra: hub: Remove bogus connection mutex check ia64: agp: Replace empty define with do while agp: Add bridge parameter documentation agp: remove unused variable num_segments agp: move AGPGART_MINOR to include/linux/miscdevice.h agp: remove unused variable size in agp_generic_create_gatt_table drm/dp_mst: Fix build on systems with STACKTRACE_SUPPORT=n drm/radeon: fix r1xx/r2xx register checker for POT textures drm/amdgpu: fix GFX10 missing CSIB set(v3) drm/amdgpu: should stop GFX ring in hw_fini ...

firmware/qcom_scm: Add scm call to handle smmu errata

2019-11-04T17:48:37Z

Qcom's smmu-500 needs to toggle wait-for-safe sequence to handle TLB invalidation sync's. Few firmwares allow doing that through SCM interface. Add API to toggle wait for safe from firmware through a SCM call. Signed-off-by: Vivek Gautam Reviewed-by: Bjorn Andersson Reviewed-by: Stephen Boyd Acked-by: Andy Gross Signed-off-by: Sai Prakash Ranjan Signed-off-by: Will Deacon

firmware: qcom: scm: add support to restore secure config to qcm_scm-32

2019-10-07T15:17:27Z

Add support to restore the secure configuration for qcm_scm-32.c. This is needed by the On Chip MEMory (OCMEM) that is present on some Snapdragon devices. Signed-off-by: Rob Clark [masneyb@onstation.org: ported to latest kernel; set ctx_bank_num to spare parameter.] Signed-off-by: Brian Masney Reviewed-by: Bjorn Andersson Tested-by: Gabriel Francisco Signed-off-by: Rob Clark

firmware: qcom: scm: add OCMEM lock/unlock interface

2019-10-07T15:17:18Z

Add support for the OCMEM lock/unlock interface that is needed by the On Chip MEMory (OCMEM) that is present on some Snapdragon devices. Signed-off-by: Rob Clark [masneyb@onstation.org: ported to latest kernel; minor reformatting.] Signed-off-by: Brian Masney Reviewed-by: Bjorn Andersson Tested-by: Gabriel Francisco Signed-off-by: Rob Clark

firmware: qcom_scm: Cleanup code in qcom_scm_assign_mem()

2019-07-22T23:25:20Z

There are some questionable coding styles in this function. It looks quite odd to deref a pointer with array indexing that only uses the first element. Also, destroying an input/output variable halfway through the function and then overwriting it on success is not clear. It's better to use a local variable and the kernel macros to step through each bit set in a bitmask and clearly show where outputs are set. Cc: Ian Jackson Cc: Julien Grall Cc: Bjorn Andersson Cc: Avaneesh Kumar Dwivedi Tested-by: Bjorn Andersson Signed-off-by: Stephen Boyd [bjorn: Changed for_each_set_bit() size to BITS_PER_LONG] Signed-off-by: Bjorn Andersson