From 5367ffa2108fd9204d98f1cb23bb718a9143a25d Mon Sep 17 00:00:00 2001 From: Arthur Hanson Rasmusson Date: Wed, 23 Sep 2026 01:26:25 -0400 Subject: kernel: serve CE caps + CE->PCE masks (unblocks UVM channel manager) kceGetDeviceCaps (kernel_ce.c) copies the caps the client hands to UVM from NV2080_CTRL_CMD_CE_GET_PHYSICAL_CAPS (0x20802a07), which reaches GSP-RM and was answered with zeros. With capsTbl = {0,0} no CE had the SYSMEM bit, so UVM's channel manager found no usable CE and UVM_REGISTER_GPU failed with NV_ERR_NOT_SUPPORTED ("Failed to initialize the channel manager", uvm_gpu.c:1574 - visible with uvm_debug_prints=1). New handlers: - CE_GET_PHYSICAL_CAPS (0x20802a07): {ceEngineType, capsTbl[2]} with SYSMEM_READ|SYSMEM_WRITE|SYSMEM|P2P|BL_GT_64K (0xEC) for COPY0..COPY4, NOT_SUPPORTED otherwise (matches subdeviceCtrlCmdCeGetCaps_IMPL). - CE_GET_ALL_CAPS (0x20802a0a) / CE_GET_ALL_PHYSICAL_CAPS (0x20802a0b): capsTbl[64][2] + present bitmap with the five CEs. - CE_GET_CE_PCE_MASK (0x20802a02): pceMask = BIT(ceIdx) (one PCE per LCE). Verified in-guest progress: UVM now gets past the channel manager and creates channels; the register path's new blocker is the first channel push (channel_init, uvm_channel.c:2535) whose semaphore release the emulated GPU must complete ("Tracker entry ... stuck waiting for 90s", sema VA 0x121000000 on channel 1:3 CE 0). --- kernel/gsp_rm_tu104.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'kernel/gsp_rm_tu104.h') diff --git a/kernel/gsp_rm_tu104.h b/kernel/gsp_rm_tu104.h index ab97307..9fd0443 100644 --- a/kernel/gsp_rm_tu104.h +++ b/kernel/gsp_rm_tu104.h @@ -700,6 +700,27 @@ static const struct tu104_internal_device_info tu104_internal_device_table[] = { #define TU104_CTRL_INTERNAL_DISPLAY_GET_IP_VERSION 0x20800a4b #define TU104_CTRL_I2C_TRANSACTION 0x402c0105 #define TU104_CTRL_CE_GET_FAULT_METHOD_BUFFER_SIZE 0x20802a08 +#define TU104_CTRL_CE_GET_PHYSICAL_CAPS 0x20802a07 +#define TU104_CTRL_CE_GET_ALL_PHYSICAL_CAPS 0x20802a0b +#define TU104_CTRL_CE_GET_ALL_CAPS 0x20802a0a +#define TU104_CTRL_CE_GET_CE_PCE_MASK 0x20802a02 + +/* CE capability bits (NV2080_CTRL_CE_CAPS_*, ctrl2080ce.h: byte:bit) */ +#define TU104_CE_CAPS0_SYSMEM_READ 0x04 +#define TU104_CE_CAPS0_SYSMEM_WRITE 0x08 +#define TU104_CE_CAPS0_SYSMEM 0x20 +#define TU104_CE_CAPS0_P2P 0x40 +#define TU104_CE_CAPS0_BL_GT_64K 0x80 +#define TU104_CE_CAPS0 (TU104_CE_CAPS0_SYSMEM_READ | \ + TU104_CE_CAPS0_SYSMEM_WRITE | \ + TU104_CE_CAPS0_SYSMEM | \ + TU104_CE_CAPS0_P2P | \ + TU104_CE_CAPS0_BL_GT_64K) +#define TU104_CE_CAPS1 0x00 + +/* ENGINE_TYPE_COPY0 = 0x9, COPY(i) = COPY0 + i (cl2080_notification.h) */ +#define TU104_ENGINE_TYPE_COPY0 0x00000009 +#define TU104_NUM_CES 5 #define TU104_CTRL_INTERNAL_GMMU_GET_STATIC_INFO 0x20800a59 #define TU104_CTRL_STATIC_KGR_GET_GLOBAL_SM_ORDER 0x20800a22 #define TU104_CTRL_STATIC_KGR_GET_INFO 0x20800a2a -- cgit v1.2.3