Hi all, with the arrival of v5.4-rc1 some of Tony's sysc patches have arrived upstream, so we do no longer need them here.
Therefore, I have rebased my drivers/staging/pvr driver [1] and fixed some more issues: * omap4 build only needs to distinguish between omap4420/30/60 and omap4470, because the latter has an sgx544 inside and the other sgx540 This is solved by creating a new omap4470.dts * I have added proper reg values and interrupts to the omap4 device tree node of the sgx (child node of the target-module) * some updates to my sgxdump and sgxdemo scripts (assuming simple Debian Stretch rootfs) * James Hilliard has contributed a fix for osfunc.c * omap2plus also needs to be configured for STAGING and PREEMPT to be able to compile the driver * I have added the __always_inline fix [2] which is needed for v5.4 with CONFIG_CC_OPTIMIZE_FOR_SIZE=y (which I are enabled on the Letux builds)
Unfortunately Tero's rstctrl patches did not yet make it upstream (or even linux-next) so I also have a copy in this branch.
Results of first testing are: * OMAP3530 (OpenPandora, BeagleBoard C): fails with [ 559.247558] PVR_K:(Error): SysLocateDevices: platform_get_resource failed
* DM3730 (GTA04, BeagleBoard XM): kernel module loads
* OMAP4460 (Pandaboard ES): kernel module loads
* AM335x (BeagleBoneBlack): reports a problem with omap_reset_deassert: [ 204.246706] omap_reset_deassert: timedout waiting for gfx:0
* OMAP5 (Pyra): fails to enable the clocks (did work with the previous version) [ 304.140363] clock-controller:clk:0000:0: failed to enable [ 304.147388] PVR_K:(Error): EnableSGXClocks: pm_runtime_get_sync failed (16)
* OMAP5 with omap2plus_defconfig: root@letux:~# echo on > $(find /sys -name control | grep /5600) [ 213.490926] clock-controller:clk:0000:0: failed to enable root@letux:~#
* pvrsrvctl --start --no-module: reports (where the kernel module loads) that the uKernel does not run
So I have several ideas what the reasons for the problems on the non-omap5 devices could be: * initial code may have some omap5 specific hack inside * or has omap5 specific magic constants * uKernel may "know" on which platform it runs and we would need differently patched user-space code for each one * omap5 has a dual core sgx544 while the other have single core * the register address translation is not yet correct and this inhibits communicating of the user-space libs with the uKernel
Maybe, if someone can point me to a complete and working BeagleBone source tree (any kernel release) which makes use of 1.14.3699939 SDK, I could compare code and address setup to find what makes the difference.
BR and thanks, Nikolaus
[1]: https://github.com/openpvrsgx-devgroup/linux_openpvrsgx/commits/letux-pvr [2]: https://lkml.org/lkml/2019/10/2/201