diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd')
26 files changed, 3976 insertions, 230 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/Makefile b/drivers/gpu/drm/amd/amdkfd/Makefile index 0f4960148..28551153e 100644 --- a/drivers/gpu/drm/amd/amdkfd/Makefile +++ b/drivers/gpu/drm/amd/amdkfd/Makefile @@ -12,5 +12,7 @@ amdkfd-y := kfd_module.o kfd_device.o kfd_chardev.o kfd_topology.o \ kfd_kernel_queue_vi.o kfd_packet_manager.o \ kfd_process_queue_manager.o kfd_device_queue_manager.o \ kfd_device_queue_manager_cik.o kfd_device_queue_manager_vi.o \ + kfd_interrupt.o kfd_events.o cik_event_interrupt.o \ + kfd_dbgdev.o kfd_dbgmgr.o obj-$(CONFIG_HSA_AMD) += amdkfd.o diff --git a/drivers/gpu/drm/amd/amdkfd/cik_event_interrupt.c b/drivers/gpu/drm/amd/amdkfd/cik_event_interrupt.c new file mode 100644 index 000000000..211fc4869 --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/cik_event_interrupt.c @@ -0,0 +1,66 @@ +/* + * Copyright 2014 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#include "kfd_priv.h" +#include "kfd_events.h" +#include "cik_int.h" + +static bool cik_event_interrupt_isr(struct kfd_dev *dev, + const uint32_t *ih_ring_entry) +{ + unsigned int pasid; + const struct cik_ih_ring_entry *ihre = + (const struct cik_ih_ring_entry *)ih_ring_entry; + + pasid = (ihre->ring_id & 0xffff0000) >> 16; + + /* Do not process in ISR, just request it to be forwarded to WQ. */ + return (pasid != 0) && + (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE || + ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG || + ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE); +} + +static void cik_event_interrupt_wq(struct kfd_dev *dev, + const uint32_t *ih_ring_entry) +{ + unsigned int pasid; + const struct cik_ih_ring_entry *ihre = + (const struct cik_ih_ring_entry *)ih_ring_entry; + + pasid = (ihre->ring_id & 0xffff0000) >> 16; + + if (pasid == 0) + return; + + if (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE) + kfd_signal_event_interrupt(pasid, 0, 0); + else if (ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG) + kfd_signal_event_interrupt(pasid, ihre->data & 0xFF, 8); + else if (ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE) + kfd_signal_hw_exception_event(pasid); +} + +const struct kfd_event_interrupt_class event_interrupt_class_cik = { + .interrupt_isr = cik_event_interrupt_isr, + .interrupt_wq = cik_event_interrupt_wq, +}; diff --git a/drivers/gpu/drm/amd/amdkfd/cik_int.h b/drivers/gpu/drm/amd/amdkfd/cik_int.h new file mode 100644 index 000000000..79a16d24c --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/cik_int.h @@ -0,0 +1,41 @@ +/* + * Copyright 2014 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef HSA_RADEON_CIK_INT_H_INCLUDED +#define HSA_RADEON_CIK_INT_H_INCLUDED + +#include <linux/types.h> + +struct cik_ih_ring_entry { + uint32_t source_id; + uint32_t data; + uint32_t ring_id; + uint32_t reserved; +}; + +#define CIK_INTSRC_DEQUEUE_COMPLETE 0xC6 +#define CIK_INTSRC_CP_END_OF_PIPE 0xB5 +#define CIK_INTSRC_CP_BAD_OPCODE 0xB7 +#define CIK_INTSRC_SQ_INTERRUPT_MSG 0xEF + +#endif + diff --git a/drivers/gpu/drm/amd/amdkfd/cik_regs.h b/drivers/gpu/drm/amd/amdkfd/cik_regs.h index 01ff332fa..183be5b84 100644 --- a/drivers/gpu/drm/amd/amdkfd/cik_regs.h +++ b/drivers/gpu/drm/amd/amdkfd/cik_regs.h @@ -23,33 +23,11 @@ #ifndef CIK_REGS_H #define CIK_REGS_H -#define IH_VMID_0_LUT 0x3D40u - -#define BIF_DOORBELL_CNTL 0x530Cu - -#define SRBM_GFX_CNTL 0xE44 -#define PIPEID(x) ((x) << 0) -#define MEID(x) ((x) << 2) -#define VMID(x) ((x) << 4) -#define QUEUEID(x) ((x) << 8) - -#define SQ_CONFIG 0x8C00 - -#define SH_MEM_BASES 0x8C28 /* if PTR32, these are the bases for scratch and lds */ #define PRIVATE_BASE(x) ((x) << 0) /* scratch */ #define SHARED_BASE(x) ((x) << 16) /* LDS */ -#define SH_MEM_APE1_BASE 0x8C2C -/* if PTR32, this is the base location of GPUVM */ -#define SH_MEM_APE1_LIMIT 0x8C30 -/* if PTR32, this is the upper limit of GPUVM */ -#define SH_MEM_CONFIG 0x8C34 #define PTR32 (1 << 0) -#define PRIVATE_ATC (1 << 1) #define ALIGNMENT_MODE(x) ((x) << 2) -#define SH_MEM_ALIGNMENT_MODE_DWORD 0 -#define SH_MEM_ALIGNMENT_MODE_DWORD_STRICT 1 -#define SH_MEM_ALIGNMENT_MODE_STRICT 2 #define SH_MEM_ALIGNMENT_MODE_UNALIGNED 3 #define DEFAULT_MTYPE(x) ((x) << 4) #define APE1_MTYPE(x) ((x) << 7) @@ -58,137 +36,34 @@ #define MTYPE_CACHED 0 #define MTYPE_NONCACHED 3 - -#define SH_STATIC_MEM_CONFIG 0x9604u - -#define TC_CFG_L1_LOAD_POLICY0 0xAC68 -#define TC_CFG_L1_LOAD_POLICY1 0xAC6C -#define TC_CFG_L1_STORE_POLICY 0xAC70 -#define TC_CFG_L2_LOAD_POLICY0 0xAC74 -#define TC_CFG_L2_LOAD_POLICY1 0xAC78 -#define TC_CFG_L2_STORE_POLICY0 0xAC7C -#define TC_CFG_L2_STORE_POLICY1 0xAC80 -#define TC_CFG_L2_ATOMIC_POLICY 0xAC84 -#define TC_CFG_L1_VOLATILE 0xAC88 -#define TC_CFG_L2_VOLATILE 0xAC8C - -#define CP_PQ_WPTR_POLL_CNTL 0xC20C -#define WPTR_POLL_EN (1 << 31) - -#define CPC_INT_CNTL 0xC2D0 -#define CP_ME1_PIPE0_INT_CNTL 0xC214 -#define CP_ME1_PIPE1_INT_CNTL 0xC218 -#define CP_ME1_PIPE2_INT_CNTL 0xC21C -#define CP_ME1_PIPE3_INT_CNTL 0xC220 -#define CP_ME2_PIPE0_INT_CNTL 0xC224 -#define CP_ME2_PIPE1_INT_CNTL 0xC228 -#define CP_ME2_PIPE2_INT_CNTL 0xC22C -#define CP_ME2_PIPE3_INT_CNTL 0xC230 -#define DEQUEUE_REQUEST_INT_ENABLE (1 << 13) -#define WRM_POLL_TIMEOUT_INT_ENABLE (1 << 17) -#define PRIV_REG_INT_ENABLE (1 << 23) -#define TIME_STAMP_INT_ENABLE (1 << 26) -#define GENERIC2_INT_ENABLE (1 << 29) -#define GENERIC1_INT_ENABLE (1 << 30) -#define GENERIC0_INT_ENABLE (1 << 31) -#define CP_ME1_PIPE0_INT_STATUS 0xC214 -#define CP_ME1_PIPE1_INT_STATUS 0xC218 -#define CP_ME1_PIPE2_INT_STATUS 0xC21C -#define CP_ME1_PIPE3_INT_STATUS 0xC220 -#define CP_ME2_PIPE0_INT_STATUS 0xC224 -#define CP_ME2_PIPE1_INT_STATUS 0xC228 -#define CP_ME2_PIPE2_INT_STATUS 0xC22C -#define CP_ME2_PIPE3_INT_STATUS 0xC230 -#define DEQUEUE_REQUEST_INT_STATUS (1 << 13) -#define WRM_POLL_TIMEOUT_INT_STATUS (1 << 17) -#define PRIV_REG_INT_STATUS (1 << 23) -#define TIME_STAMP_INT_STATUS (1 << 26) -#define GENERIC2_INT_STATUS (1 << 29) -#define GENERIC1_INT_STATUS (1 << 30) -#define GENERIC0_INT_STATUS (1 << 31) - -#define CP_HPD_EOP_BASE_ADDR 0xC904 -#define CP_HPD_EOP_BASE_ADDR_HI 0xC908 -#define CP_HPD_EOP_VMID 0xC90C -#define CP_HPD_EOP_CONTROL 0xC910 -#define EOP_SIZE(x) ((x) << 0) -#define EOP_SIZE_MASK (0x3f << 0) -#define CP_MQD_BASE_ADDR 0xC914 -#define CP_MQD_BASE_ADDR_HI 0xC918 -#define CP_HQD_ACTIVE 0xC91C -#define CP_HQD_VMID 0xC920 - -#define CP_HQD_PERSISTENT_STATE 0xC924u #define DEFAULT_CP_HQD_PERSISTENT_STATE (0x33U << 8) #define PRELOAD_REQ (1 << 0) -#define CP_HQD_PIPE_PRIORITY 0xC928u -#define CP_HQD_QUEUE_PRIORITY 0xC92Cu -#define CP_HQD_QUANTUM 0xC930u +#define MQD_CONTROL_PRIV_STATE_EN (1U << 8) + +#define DEFAULT_MIN_IB_AVAIL_SIZE (3U << 20) + +#define IB_ATC_EN (1U << 23) + #define QUANTUM_EN 1U #define QUANTUM_SCALE_1MS (1U << 4) #define QUANTUM_DURATION(x) ((x) << 8) -#define CP_HQD_PQ_BASE 0xC934 -#define CP_HQD_PQ_BASE_HI 0xC938 -#define CP_HQD_PQ_RPTR 0xC93C -#define CP_HQD_PQ_RPTR_REPORT_ADDR 0xC940 -#define CP_HQD_PQ_RPTR_REPORT_ADDR_HI 0xC944 -#define CP_HQD_PQ_WPTR_POLL_ADDR 0xC948 -#define CP_HQD_PQ_WPTR_POLL_ADDR_HI 0xC94C -#define CP_HQD_PQ_DOORBELL_CONTROL 0xC950 -#define DOORBELL_OFFSET(x) ((x) << 2) -#define DOORBELL_OFFSET_MASK (0x1fffff << 2) -#define DOORBELL_SOURCE (1 << 28) -#define DOORBELL_SCHD_HIT (1 << 29) -#define DOORBELL_EN (1 << 30) -#define DOORBELL_HIT (1 << 31) -#define CP_HQD_PQ_WPTR 0xC954 -#define CP_HQD_PQ_CONTROL 0xC958 -#define QUEUE_SIZE(x) ((x) << 0) -#define QUEUE_SIZE_MASK (0x3f << 0) #define RPTR_BLOCK_SIZE(x) ((x) << 8) -#define RPTR_BLOCK_SIZE_MASK (0x3f << 8) #define MIN_AVAIL_SIZE(x) ((x) << 20) -#define PQ_ATC_EN (1 << 23) -#define PQ_VOLATILE (1 << 26) -#define NO_UPDATE_RPTR (1 << 27) -#define UNORD_DISPATCH (1 << 28) -#define ROQ_PQ_IB_FLIP (1 << 29) -#define PRIV_STATE (1 << 30) -#define KMD_QUEUE (1 << 31) - #define DEFAULT_RPTR_BLOCK_SIZE RPTR_BLOCK_SIZE(5) #define DEFAULT_MIN_AVAIL_SIZE MIN_AVAIL_SIZE(3) -#define CP_HQD_IB_BASE_ADDR 0xC95Cu -#define CP_HQD_IB_BASE_ADDR_HI 0xC960u -#define CP_HQD_IB_RPTR 0xC964u -#define CP_HQD_IB_CONTROL 0xC968u -#define IB_ATC_EN (1U << 23) -#define DEFAULT_MIN_IB_AVAIL_SIZE (3U << 20) - -#define AQL_ENABLE 1 - -#define CP_HQD_DEQUEUE_REQUEST 0xC974 -#define DEQUEUE_REQUEST_DRAIN 1 -#define DEQUEUE_REQUEST_RESET 2 -#define DEQUEUE_INT (1U << 8) +#define PQ_ATC_EN (1 << 23) +#define NO_UPDATE_RPTR (1 << 27) -#define CP_HQD_SEMA_CMD 0xC97Cu -#define CP_HQD_MSG_TYPE 0xC980u -#define CP_HQD_ATOMIC0_PREOP_LO 0xC984u -#define CP_HQD_ATOMIC0_PREOP_HI 0xC988u -#define CP_HQD_ATOMIC1_PREOP_LO 0xC98Cu -#define CP_HQD_ATOMIC1_PREOP_HI 0xC990u -#define CP_HQD_HQ_SCHEDULER0 0xC994u -#define CP_HQD_HQ_SCHEDULER1 0xC998u +#define DOORBELL_OFFSET(x) ((x) << 2) +#define DOORBELL_EN (1 << 30) +#define PRIV_STATE (1 << 30) +#define KMD_QUEUE (1 << 31) -#define CP_MQD_CONTROL 0xC99C -#define MQD_VMID(x) ((x) << 0) -#define MQD_VMID_MASK (0xf << 0) -#define MQD_CONTROL_PRIV_STATE_EN (1U << 8) +#define AQL_ENABLE 1 #define SDMA_RB_VMID(x) (x << 24) #define SDMA_RB_ENABLE (1 << 0) @@ -202,33 +77,7 @@ #define SDMA_VA_SHARED_BASE(x) (x << 8) #define GRBM_GFX_INDEX 0x30800 -#define INSTANCE_INDEX(x) ((x) << 0) -#define SH_INDEX(x) ((x) << 8) -#define SE_INDEX(x) ((x) << 16) -#define SH_BROADCAST_WRITES (1 << 29) -#define INSTANCE_BROADCAST_WRITES (1 << 30) -#define SE_BROADCAST_WRITES (1 << 31) - -#define SQC_CACHES 0x30d20 -#define SQC_POLICY 0x8C38u -#define SQC_VOLATILE 0x8C3Cu -#define CP_PERFMON_CNTL 0x36020 - -#define ATC_VMID0_PASID_MAPPING 0x339Cu -#define ATC_VMID_PASID_MAPPING_UPDATE_STATUS 0x3398u #define ATC_VMID_PASID_MAPPING_VALID (1U << 31) -#define ATC_VM_APERTURE0_CNTL 0x3310u -#define ATS_ACCESS_MODE_NEVER 0 -#define ATS_ACCESS_MODE_ALWAYS 1 - -#define ATC_VM_APERTURE0_CNTL2 0x3318u -#define ATC_VM_APERTURE0_HIGH_ADDR 0x3308u -#define ATC_VM_APERTURE0_LOW_ADDR 0x3300u -#define ATC_VM_APERTURE1_CNTL 0x3314u -#define ATC_VM_APERTURE1_CNTL2 0x331Cu -#define ATC_VM_APERTURE1_HIGH_ADDR 0x330Cu -#define ATC_VM_APERTURE1_LOW_ADDR 0x3304u - #endif diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index 19a4fba46..c99197301 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -35,6 +35,7 @@ #include <asm/processor.h> #include "kfd_priv.h" #include "kfd_device_queue_manager.h" +#include "kfd_dbgmgr.h" static long kfd_ioctl(struct file *, unsigned int, unsigned long); static int kfd_open(struct inode *, struct file *); @@ -289,8 +290,10 @@ static int kfd_ioctl_create_queue(struct file *filep, struct kfd_process *p, args->queue_id = queue_id; + /* Return gpu_id as doorbell offset for mmap usage */ - args->doorbell_offset = args->gpu_id << PAGE_SHIFT; + args->doorbell_offset = (KFD_MMAP_DOORBELL_MASK | args->gpu_id); + args->doorbell_offset <<= PAGE_SHIFT; mutex_unlock(&p->mutex); @@ -430,6 +433,301 @@ out: return err; } +static int kfd_ioctl_dbg_register(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_dbg_register_args *args = data; + struct kfd_dev *dev; + struct kfd_dbgmgr *dbgmgr_ptr; + struct kfd_process_device *pdd; + bool create_ok; + long status = 0; + + dev = kfd_device_by_id(args->gpu_id); + if (dev == NULL) + return -EINVAL; + + if (dev->device_info->asic_family == CHIP_CARRIZO) { + pr_debug("kfd_ioctl_dbg_register not supported on CZ\n"); + return -EINVAL; + } + + mutex_lock(kfd_get_dbgmgr_mutex()); + mutex_lock(&p->mutex); + + /* + * make sure that we have pdd, if this the first queue created for + * this process + */ + pdd = kfd_bind_process_to_device(dev, p); + if (IS_ERR(pdd)) { + mutex_unlock(&p->mutex); + mutex_unlock(kfd_get_dbgmgr_mutex()); + return PTR_ERR(pdd); + } + + if (dev->dbgmgr == NULL) { + /* In case of a legal call, we have no dbgmgr yet */ + create_ok = kfd_dbgmgr_create(&dbgmgr_ptr, dev); + if (create_ok) { + status = kfd_dbgmgr_register(dbgmgr_ptr, p); + if (status != 0) + kfd_dbgmgr_destroy(dbgmgr_ptr); + else + dev->dbgmgr = dbgmgr_ptr; + } + } else { + pr_debug("debugger already registered\n"); + status = -EINVAL; + } + + mutex_unlock(&p->mutex); + mutex_unlock(kfd_get_dbgmgr_mutex()); + + return status; +} + +static int kfd_ioctl_dbg_unrgesiter(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_dbg_unregister_args *args = data; + struct kfd_dev *dev; + long status; + + dev = kfd_device_by_id(args->gpu_id); + if (dev == NULL) + return -EINVAL; + + if (dev->device_info->asic_family == CHIP_CARRIZO) { + pr_debug("kfd_ioctl_dbg_unrgesiter not supported on CZ\n"); + return -EINVAL; + } + + mutex_lock(kfd_get_dbgmgr_mutex()); + + status = kfd_dbgmgr_unregister(dev->dbgmgr, p); + if (status == 0) { + kfd_dbgmgr_destroy(dev->dbgmgr); + dev->dbgmgr = NULL; + } + + mutex_unlock(kfd_get_dbgmgr_mutex()); + + return status; +} + +/* + * Parse and generate variable size data structure for address watch. + * Total size of the buffer and # watch points is limited in order + * to prevent kernel abuse. (no bearing to the much smaller HW limitation + * which is enforced by dbgdev module) + * please also note that the watch address itself are not "copied from user", + * since it be set into the HW in user mode values. + * + */ +static int kfd_ioctl_dbg_address_watch(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_dbg_address_watch_args *args = data; + struct kfd_dev *dev; + struct dbg_address_watch_info aw_info; + unsigned char *args_buff; + long status; + void __user *cmd_from_user; + uint64_t watch_mask_value = 0; + unsigned int args_idx = 0; + + memset((void *) &aw_info, 0, sizeof(struct dbg_address_watch_info)); + + dev = kfd_device_by_id(args->gpu_id); + if (dev == NULL) + return -EINVAL; + + if (dev->device_info->asic_family == CHIP_CARRIZO) { + pr_debug("kfd_ioctl_dbg_wave_control not supported on CZ\n"); + return -EINVAL; + } + + cmd_from_user = (void __user *) args->content_ptr; + + /* Validate arguments */ + + if ((args->buf_size_in_bytes > MAX_ALLOWED_AW_BUFF_SIZE) || + (args->buf_size_in_bytes <= sizeof(*args) + sizeof(int) * 2) || + (cmd_from_user == NULL)) + return -EINVAL; + + /* this is the actual buffer to work with */ + + args_buff = kmalloc(args->buf_size_in_bytes - + sizeof(*args), GFP_KERNEL); + if (args_buff == NULL) + return -ENOMEM; + + status = copy_from_user(args_buff, cmd_from_user, + args->buf_size_in_bytes - sizeof(*args)); + + if (status != 0) { + pr_debug("Failed to copy address watch user data\n"); + kfree(args_buff); + return -EINVAL; + } + + aw_info.process = p; + + aw_info.num_watch_points = *((uint32_t *)(&args_buff[args_idx])); + args_idx += sizeof(aw_info.num_watch_points); + + aw_info.watch_mode = (enum HSA_DBG_WATCH_MODE *) &args_buff[args_idx]; + args_idx += sizeof(enum HSA_DBG_WATCH_MODE) * aw_info.num_watch_points; + + /* + * set watch address base pointer to point on the array base + * within args_buff + */ + aw_info.watch_address = (uint64_t *) &args_buff[args_idx]; + + /* skip over the addresses buffer */ + args_idx += sizeof(aw_info.watch_address) * aw_info.num_watch_points; + + if (args_idx >= args->buf_size_in_bytes - sizeof(*args)) { + kfree(args_buff); + return -EINVAL; + } + + watch_mask_value = (uint64_t) args_buff[args_idx]; + + if (watch_mask_value > 0) { + /* + * There is an array of masks. + * set watch mask base pointer to point on the array base + * within args_buff + */ + aw_info.watch_mask = (uint64_t *) &args_buff[args_idx]; + + /* skip over the masks buffer */ + args_idx += sizeof(aw_info.watch_mask) * + aw_info.num_watch_points; + } else { + /* just the NULL mask, set to NULL and skip over it */ + aw_info.watch_mask = NULL; + args_idx += sizeof(aw_info.watch_mask); + } + + if (args_idx >= args->buf_size_in_bytes - sizeof(args)) { + kfree(args_buff); + return -EINVAL; + } + + /* Currently HSA Event is not supported for DBG */ + aw_info.watch_event = NULL; + + mutex_lock(kfd_get_dbgmgr_mutex()); + + status = kfd_dbgmgr_address_watch(dev->dbgmgr, &aw_info); + + mutex_unlock(kfd_get_dbgmgr_mutex()); + + kfree(args_buff); + + return status; +} + +/* Parse and generate fixed size data structure for wave control */ +static int kfd_ioctl_dbg_wave_control(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_dbg_wave_control_args *args = data; + struct kfd_dev *dev; + struct dbg_wave_control_info wac_info; + unsigned char *args_buff; + uint32_t computed_buff_size; + long status; + void __user *cmd_from_user; + unsigned int args_idx = 0; + + memset((void *) &wac_info, 0, sizeof(struct dbg_wave_control_info)); + + /* we use compact form, independent of the packing attribute value */ + computed_buff_size = sizeof(*args) + + sizeof(wac_info.mode) + + sizeof(wac_info.operand) + + sizeof(wac_info.dbgWave_msg.DbgWaveMsg) + + sizeof(wac_info.dbgWave_msg.MemoryVA) + + sizeof(wac_info.trapId); + + dev = kfd_device_by_id(args->gpu_id); + if (dev == NULL) + return -EINVAL; + + if (dev->device_info->asic_family == CHIP_CARRIZO) { + pr_debug("kfd_ioctl_dbg_wave_control not supported on CZ\n"); + return -EINVAL; + } + + /* input size must match the computed "compact" size */ + if (args->buf_size_in_bytes != computed_buff_size) { + pr_debug("size mismatch, computed : actual %u : %u\n", + args->buf_size_in_bytes, computed_buff_size); + return -EINVAL; + } + + cmd_from_user = (void __user *) args->content_ptr; + + if (cmd_from_user == NULL) + return -EINVAL; + + /* this is the actual buffer to work with */ + + args_buff = kmalloc(args->buf_size_in_bytes - sizeof(*args), + GFP_KERNEL); + + if (args_buff == NULL) + return -ENOMEM; + + /* Now copy the entire buffer from user */ + status = copy_from_user(args_buff, cmd_from_user, + args->buf_size_in_bytes - sizeof(*args)); + if (status != 0) { + pr_debug("Failed to copy wave control user data\n"); + kfree(args_buff); + return -EINVAL; + } + + /* move ptr to the start of the "pay-load" area */ + wac_info.process = p; + + wac_info.operand = *((enum HSA_DBG_WAVEOP *)(&args_buff[args_idx])); + args_idx += sizeof(wac_info.operand); + + wac_info.mode = *((enum HSA_DBG_WAVEMODE *)(&args_buff[args_idx])); + args_idx += sizeof(wac_info.mode); + + wac_info.trapId = *((uint32_t *)(&args_buff[args_idx])); + args_idx += sizeof(wac_info.trapId); + + wac_info.dbgWave_msg.DbgWaveMsg.WaveMsgInfoGen2.Value = + *((uint32_t *)(&args_buff[args_idx])); + wac_info.dbgWave_msg.MemoryVA = NULL; + + mutex_lock(kfd_get_dbgmgr_mutex()); + + pr_debug("Calling dbg manager process %p, operand %u, mode %u, trapId %u, message %u\n", + wac_info.process, wac_info.operand, + wac_info.mode, wac_info.trapId, + wac_info.dbgWave_msg.DbgWaveMsg.WaveMsgInfoGen2.Value); + + status = kfd_dbgmgr_wave_control(dev->dbgmgr, &wac_info); + + pr_debug("Returned status of dbg manager is %ld\n", status); + + mutex_unlock(kfd_get_dbgmgr_mutex()); + + kfree(args_buff); + + return status; +} + static int kfd_ioctl_get_clock_counters(struct file *filep, struct kfd_process *p, void *data) { @@ -514,6 +812,62 @@ static int kfd_ioctl_get_process_apertures(struct file *filp, return 0; } +static int kfd_ioctl_create_event(struct file *filp, struct kfd_process *p, + void *data) +{ + struct kfd_ioctl_create_event_args *args = data; + int err; + + err = kfd_event_create(filp, p, args->event_type, + args->auto_reset != 0, args->node_id, + &args->event_id, &args->event_trigger_data, + &args->event_page_offset, + &args->event_slot_index); + + return err; +} + +static int kfd_ioctl_destroy_event(struct file *filp, struct kfd_process *p, + void *data) +{ + struct kfd_ioctl_destroy_event_args *args = data; + + return kfd_event_destroy(p, args->event_id); +} + +static int kfd_ioctl_set_event(struct file *filp, struct kfd_process *p, + void *data) +{ + struct kfd_ioctl_set_event_args *args = data; + + return kfd_set_event(p, args->event_id); +} + +static int kfd_ioctl_reset_event(struct file *filp, struct kfd_process *p, + void *data) +{ + struct kfd_ioctl_reset_event_args *args = data; + + return kfd_reset_event(p, args->event_id); +} + +static int kfd_ioctl_wait_events(struct file *filp, struct kfd_process *p, + void *data) +{ + struct kfd_ioctl_wait_events_args *args = data; + enum kfd_event_wait_result wait_result; + int err; + + err = kfd_wait_on_events(p, args->num_events, + (void __user *)args->events_ptr, + (args->wait_for_all != 0), + args->timeout, &wait_result); + + args->wait_result = wait_result; + + return err; +} + #define AMDKFD_IOCTL_DEF(ioctl, _func, _flags) \ [_IOC_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, .cmd_drv = 0, .name = #ioctl} @@ -539,6 +893,33 @@ static const struct amdkfd_ioctl_desc amdkfd_ioctls[] = { AMDKFD_IOCTL_DEF(AMDKFD_IOC_UPDATE_QUEUE, kfd_ioctl_update_queue, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_CREATE_EVENT, + kfd_ioctl_create_event, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_DESTROY_EVENT, + kfd_ioctl_destroy_event, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_SET_EVENT, + kfd_ioctl_set_event, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_RESET_EVENT, + kfd_ioctl_reset_event, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_WAIT_EVENTS, + kfd_ioctl_wait_events, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_DBG_REGISTER, + kfd_ioctl_dbg_register, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_DBG_UNREGISTER, + kfd_ioctl_dbg_unrgesiter, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_DBG_ADDRESS_WATCH, + kfd_ioctl_dbg_address_watch, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_DBG_WAVE_CONTROL, + kfd_ioctl_dbg_wave_control, 0), }; #define AMDKFD_CORE_IOCTL_COUNT ARRAY_SIZE(amdkfd_ioctls) @@ -639,5 +1020,15 @@ static int kfd_mmap(struct file *filp, struct vm_area_struct *vma) if (IS_ERR(process)) return PTR_ERR(process); - return kfd_doorbell_mmap(process, vma); + if ((vma->vm_pgoff & KFD_MMAP_DOORBELL_MASK) == + KFD_MMAP_DOORBELL_MASK) { + vma->vm_pgoff = vma->vm_pgoff ^ KFD_MMAP_DOORBELL_MASK; + return kfd_doorbell_mmap(process, vma); + } else if ((vma->vm_pgoff & KFD_MMAP_EVENTS_MASK) == + KFD_MMAP_EVENTS_MASK) { + vma->vm_pgoff = vma->vm_pgoff ^ KFD_MMAP_EVENTS_MASK; + return kfd_event_mmap(process, vma); + } + + return -EFAULT; } diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.c b/drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.c new file mode 100644 index 000000000..c34c393e9 --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.c @@ -0,0 +1,886 @@ +/* + * Copyright 2014 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/log2.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/mutex.h> +#include <linux/device.h> + +#include "kfd_pm4_headers.h" +#include "kfd_pm4_headers_diq.h" +#include "kfd_kernel_queue.h" +#include "kfd_priv.h" +#include "kfd_pm4_opcodes.h" +#include "cik_regs.h" +#include "kfd_dbgmgr.h" +#include "kfd_dbgdev.h" +#include "kfd_device_queue_manager.h" +#include "../../radeon/cik_reg.h" + +static void dbgdev_address_watch_disable_nodiq(struct kfd_dev *dev) +{ + BUG_ON(!dev || !dev->kfd2kgd); + + dev->kfd2kgd->address_watch_disable(dev->kgd); +} + +static int dbgdev_diq_submit_ib(struct kfd_dbgdev *dbgdev, + unsigned int pasid, uint64_t vmid0_address, + uint32_t *packet_buff, size_t size_in_bytes) +{ + struct pm4__release_mem *rm_packet; + struct pm4__indirect_buffer_pasid *ib_packet; + struct kfd_mem_obj *mem_obj; + size_t pq_packets_size_in_bytes; + union ULARGE_INTEGER *largep; + union ULARGE_INTEGER addr; + struct kernel_queue *kq; + uint64_t *rm_state; + unsigned int *ib_packet_buff; + int status; + + BUG_ON(!dbgdev || !dbgdev->kq || !packet_buff || !size_in_bytes); + + kq = dbgdev->kq; + + pq_packets_size_in_bytes = sizeof(struct pm4__release_mem) + + sizeof(struct pm4__indirect_buffer_pasid); + + /* + * We acquire a buffer from DIQ + * The receive packet buff will be sitting on the Indirect Buffer + * and in the PQ we put the IB packet + sync packet(s). + */ + status = kq->ops.acquire_packet_buffer(kq, + pq_packets_size_in_bytes / sizeof(uint32_t), + &ib_packet_buff); + if (status != 0) { + pr_err("amdkfd: acquire_packet_buffer failed\n"); + return status; + } + + memset(ib_packet_buff, 0, pq_packets_size_in_bytes); + + ib_packet = (struct pm4__indirect_buffer_pasid *) (ib_packet_buff); + + ib_packet->header.count = 3; + ib_packet->header.opcode = IT_INDIRECT_BUFFER_PASID; + ib_packet->header.type = PM4_TYPE_3; + + largep = (union ULARGE_INTEGER *) &vmid0_address; + + ib_packet->bitfields2.ib_base_lo = largep->u.low_part >> 2; + ib_packet->bitfields3.ib_base_hi = largep->u.high_part; + + ib_packet->control = (1 << 23) | (1 << 31) | + ((size_in_bytes / sizeof(uint32_t)) & 0xfffff); + + ib_packet->bitfields5.pasid = pasid; + + /* + * for now we use release mem for GPU-CPU synchronization + * Consider WaitRegMem + WriteData as a better alternative + * we get a GART allocations ( gpu/cpu mapping), + * for the sync variable, and wait until: + * (a) Sync with HW + * (b) Sync var is written by CP to mem. + */ + rm_packet = (struct pm4__release_mem *) (ib_packet_buff + + (sizeof(struct pm4__indirect_buffer_pasid) / + sizeof(unsigned int))); + + status = kfd_gtt_sa_allocate(dbgdev->dev, sizeof(uint64_t), + &mem_obj); + + if (status != 0) { + pr_err("amdkfd: Failed to allocate GART memory\n"); + kq->ops.rollback_packet(kq); + return status; + } + + rm_state = (uint64_t *) mem_obj->cpu_ptr; + + *rm_state = QUEUESTATE__ACTIVE_COMPLETION_PENDING; + + rm_packet->header.opcode = IT_RELEASE_MEM; + rm_packet->header.type = PM4_TYPE_3; + rm_packet->header.count = sizeof(struct pm4__release_mem) / + sizeof(unsigned int) - 2; + + rm_packet->bitfields2.event_type = CACHE_FLUSH_AND_INV_TS_EVENT; + rm_packet->bitfields2.event_index = + event_index___release_mem__end_of_pipe; + + rm_packet->bitfields2.cache_policy = cache_policy___release_mem__lru; + rm_packet->bitfields2.atc = 0; + rm_packet->bitfields2.tc_wb_action_ena = 1; + + addr.quad_part = mem_obj->gpu_addr; + + rm_packet->bitfields4.address_lo_32b = addr.u.low_part >> 2; + rm_packet->address_hi = addr.u.high_part; + + rm_packet->bitfields3.data_sel = + data_sel___release_mem__send_64_bit_data; + + rm_packet->bitfields3.int_sel = + int_sel___release_mem__send_data_after_write_confirm; + + rm_packet->bitfields3.dst_sel = + dst_sel___release_mem__memory_controller; + + rm_packet->data_lo = QUEUESTATE__ACTIVE; + + kq->ops.submit_packet(kq); + + /* Wait till CP writes sync code: */ + status = amdkfd_fence_wait_timeout( + (unsigned int *) rm_state, + QUEUESTATE__ACTIVE, 1500); + + kfd_gtt_sa_free(dbgdev->dev, mem_obj); + + return status; +} + +static int dbgdev_register_nodiq(struct kfd_dbgdev *dbgdev) +{ + BUG_ON(!dbgdev); + + /* + * no action is needed in this case, + * just make sure diq will not be used + */ + + dbgdev->kq = NULL; + + return 0; +} + +static int dbgdev_register_diq(struct kfd_dbgdev *dbgdev) +{ + struct queue_properties properties; + unsigned int qid; + struct kernel_queue *kq = NULL; + int status; + + BUG_ON(!dbgdev || !dbgdev->pqm || !dbgdev->dev); + + status = pqm_create_queue(dbgdev->pqm, dbgdev->dev, NULL, + &properties, 0, KFD_QUEUE_TYPE_DIQ, + &qid); + + if (status) { + pr_err("amdkfd: Failed to create DIQ\n"); + return status; + } + + pr_debug("DIQ Created with queue id: %d\n", qid); + + kq = pqm_get_kernel_queue(dbgdev->pqm, qid); + + if (kq == NULL) { + pr_err("amdkfd: Error getting DIQ\n"); + pqm_destroy_queue(dbgdev->pqm, qid); + return -EFAULT; + } + + dbgdev->kq = kq; + + return status; +} + +static int dbgdev_unregister_nodiq(struct kfd_dbgdev *dbgdev) +{ + BUG_ON(!dbgdev || !dbgdev->dev); + + /* disable watch address */ + dbgdev_address_watch_disable_nodiq(dbgdev->dev); + return 0; +} + +static int dbgdev_unregister_diq(struct kfd_dbgdev *dbgdev) +{ + /* todo - disable address watch */ + int status; + + BUG_ON(!dbgdev || !dbgdev->pqm || !dbgdev->kq); + + status = pqm_destroy_queue(dbgdev->pqm, + dbgdev->kq->queue->properties.queue_id); + dbgdev->kq = NULL; + + return status; +} + +static void dbgdev_address_watch_set_registers( + const struct dbg_address_watch_info *adw_info, + union TCP_WATCH_ADDR_H_BITS *addrHi, + union TCP_WATCH_ADDR_L_BITS *addrLo, + union TCP_WATCH_CNTL_BITS *cntl, + unsigned int index, unsigned int vmid) +{ + union ULARGE_INTEGER addr; + + BUG_ON(!adw_info || !addrHi || !addrLo || !cntl); + + addr.quad_part = 0; + addrHi->u32All = 0; + addrLo->u32All = 0; + cntl->u32All = 0; + + if (adw_info->watch_mask != NULL) + cntl->bitfields.mask = + (uint32_t) (adw_info->watch_mask[index] & + ADDRESS_WATCH_REG_CNTL_DEFAULT_MASK); + else + cntl->bitfields.mask = ADDRESS_WATCH_REG_CNTL_DEFAULT_MASK; + + addr.quad_part = (unsigned long long) adw_info->watch_address[index]; + + addrHi->bitfields.addr = addr.u.high_part & + ADDRESS_WATCH_REG_ADDHIGH_MASK; + addrLo->bitfields.addr = + (addr.u.low_part >> ADDRESS_WATCH_REG_ADDLOW_SHIFT); + + cntl->bitfields.mode = adw_info->watch_mode[index]; + cntl->bitfields.vmid = (uint32_t) vmid; + /* for now assume it is an ATC address */ + cntl->u32All |= ADDRESS_WATCH_REG_CNTL_ATC_BIT; + + pr_debug("\t\t%20s %08x\n", "set reg mask :", cntl->bitfields.mask); + pr_debug("\t\t%20s %08x\n", "set reg add high :", + addrHi->bitfields.addr); + pr_debug("\t\t%20s %08x\n", "set reg add low :", + addrLo->bitfields.addr); +} + +static int dbgdev_address_watch_nodiq(struct kfd_dbgdev *dbgdev, + struct dbg_address_watch_info *adw_info) +{ + union TCP_WATCH_ADDR_H_BITS addrHi; + union TCP_WATCH_ADDR_L_BITS addrLo; + union TCP_WATCH_CNTL_BITS cntl; + struct kfd_process_device *pdd; + unsigned int i; + + BUG_ON(!dbgdev || !dbgdev->dev || !adw_info); + + /* taking the vmid for that process on the safe way using pdd */ + pdd = kfd_get_process_device_data(dbgdev->dev, + adw_info->process); + if (!pdd) { + pr_err("amdkfd: Failed to get pdd for wave control no DIQ\n"); + return -EFAULT; + } + + addrHi.u32All = 0; + addrLo.u32All = 0; + cntl.u32All = 0; + + if ((adw_info->num_watch_points > MAX_WATCH_ADDRESSES) || + (adw_info->num_watch_points == 0)) { + pr_err("amdkfd: num_watch_points is invalid\n"); + return -EINVAL; + } + + if ((adw_info->watch_mode == NULL) || + (adw_info->watch_address == NULL)) { + pr_err("amdkfd: adw_info fields are not valid\n"); + return -EINVAL; + } + + for (i = 0 ; i < adw_info->num_watch_points ; i++) { + dbgdev_address_watch_set_registers(adw_info, &addrHi, &addrLo, + &cntl, i, pdd->qpd.vmid); + + pr_debug("\t\t%30s\n", "* * * * * * * * * * * * * * * * * *"); + pr_debug("\t\t%20s %08x\n", "register index :", i); + pr_debug("\t\t%20s %08x\n", "vmid is :", pdd->qpd.vmid); + pr_debug("\t\t%20s %08x\n", "Address Low is :", + addrLo.bitfields.addr); + pr_debug("\t\t%20s %08x\n", "Address high is :", + addrHi.bitfields.addr); + pr_debug("\t\t%20s %08x\n", "Address high is :", + addrHi.bitfields.addr); + pr_debug("\t\t%20s %08x\n", "Control Mask is :", + cntl.bitfields.mask); + pr_debug("\t\t%20s %08x\n", "Control Mode is :", + cntl.bitfields.mode); + pr_debug("\t\t%20s %08x\n", "Control Vmid is :", + cntl.bitfields.vmid); + pr_debug("\t\t%20s %08x\n", "Control atc is :", + cntl.bitfields.atc); + pr_debug("\t\t%30s\n", "* * * * * * * * * * * * * * * * * *"); + + pdd->dev->kfd2kgd->address_watch_execute( + dbgdev->dev->kgd, + i, + cntl.u32All, + addrHi.u32All, + addrLo.u32All); + } + + return 0; +} + +static int dbgdev_address_watch_diq(struct kfd_dbgdev *dbgdev, + struct dbg_address_watch_info *adw_info) +{ + struct pm4__set_config_reg *packets_vec; + union TCP_WATCH_ADDR_H_BITS addrHi; + union TCP_WATCH_ADDR_L_BITS addrLo; + union TCP_WATCH_CNTL_BITS cntl; + struct kfd_mem_obj *mem_obj; + unsigned int aw_reg_add_dword; + uint32_t *packet_buff_uint; + unsigned int i; + int status; + size_t ib_size = sizeof(struct pm4__set_config_reg) * 4; + /* we do not control the vmid in DIQ mode, just a place holder */ + unsigned int vmid = 0; + + BUG_ON(!dbgdev || !dbgdev->dev || !adw_info); + + addrHi.u32All = 0; + addrLo.u32All = 0; + cntl.u32All = 0; + + if ((adw_info->num_watch_points > MAX_WATCH_ADDRESSES) || + (adw_info->num_watch_points == 0)) { + pr_err("amdkfd: num_watch_points is invalid\n"); + return -EINVAL; + } + + if ((NULL == adw_info->watch_mode) || + (NULL == adw_info->watch_address)) { + pr_err("amdkfd: adw_info fields are not valid\n"); + return -EINVAL; + } + + status = kfd_gtt_sa_allocate(dbgdev->dev, ib_size, &mem_obj); + + if (status != 0) { + pr_err("amdkfd: Failed to allocate GART memory\n"); + return status; + } + + packet_buff_uint = mem_obj->cpu_ptr; + + memset(packet_buff_uint, 0, ib_size); + + packets_vec = (struct pm4__set_config_reg *) (packet_buff_uint); + + packets_vec[0].header.count = 1; + packets_vec[0].header.opcode = IT_SET_CONFIG_REG; + packets_vec[0].header.type = PM4_TYPE_3; + packets_vec[0].bitfields2.vmid_shift = ADDRESS_WATCH_CNTL_OFFSET; + packets_vec[0].bitfields2.insert_vmid = 1; + packets_vec[1].ordinal1 = packets_vec[0].ordinal1; + packets_vec[1].bitfields2.insert_vmid = 0; + packets_vec[2].ordinal1 = packets_vec[0].ordinal1; + packets_vec[2].bitfields2.insert_vmid = 0; + packets_vec[3].ordinal1 = packets_vec[0].ordinal1; + packets_vec[3].bitfields2.vmid_shift = ADDRESS_WATCH_CNTL_OFFSET; + packets_vec[3].bitfields2.insert_vmid = 1; + + for (i = 0; i < adw_info->num_watch_points; i++) { + dbgdev_address_watch_set_registers(adw_info, + &addrHi, + &addrLo, + &cntl, + i, + vmid); + + pr_debug("\t\t%30s\n", "* * * * * * * * * * * * * * * * * *"); + pr_debug("\t\t%20s %08x\n", "register index :", i); + pr_debug("\t\t%20s %08x\n", "vmid is :", vmid); + pr_debug("\t\t%20s %p\n", "Add ptr is :", + adw_info->watch_address); + pr_debug("\t\t%20s %08llx\n", "Add is :", + adw_info->watch_address[i]); + pr_debug("\t\t%20s %08x\n", "Address Low is :", + addrLo.bitfields.addr); + pr_debug("\t\t%20s %08x\n", "Address high is :", + addrHi.bitfields.addr); + pr_debug("\t\t%20s %08x\n", "Control Mask is :", + cntl.bitfields.mask); + pr_debug("\t\t%20s %08x\n", "Control Mode is :", + cntl.bitfields.mode); + pr_debug("\t\t%20s %08x\n", "Control Vmid is :", + cntl.bitfields.vmid); + pr_debug("\t\t%20s %08x\n", "Control atc is :", + cntl.bitfields.atc); + pr_debug("\t\t%30s\n", "* * * * * * * * * * * * * * * * * *"); + + aw_reg_add_dword = + dbgdev->dev->kfd2kgd->address_watch_get_offset( + dbgdev->dev->kgd, + i, + ADDRESS_WATCH_REG_CNTL); + + aw_reg_add_dword /= sizeof(uint32_t); + + packets_vec[0].bitfields2.reg_offset = + aw_reg_add_dword - AMD_CONFIG_REG_BASE; + + packets_vec[0].reg_data[0] = cntl.u32All; + + aw_reg_add_dword = + dbgdev->dev->kfd2kgd->address_watch_get_offset( + dbgdev->dev->kgd, + i, + ADDRESS_WATCH_REG_ADDR_HI); + + aw_reg_add_dword /= sizeof(uint32_t); + + packets_vec[1].bitfields2.reg_offset = + aw_reg_add_dword - AMD_CONFIG_REG_BASE; + packets_vec[1].reg_data[0] = addrHi.u32All; + + aw_reg_add_dword = + dbgdev->dev->kfd2kgd->address_watch_get_offset( + dbgdev->dev->kgd, + i, + ADDRESS_WATCH_REG_ADDR_LO); + + aw_reg_add_dword /= sizeof(uint32_t); + + packets_vec[2].bitfields2.reg_offset = + aw_reg_add_dword - AMD_CONFIG_REG_BASE; + packets_vec[2].reg_data[0] = addrLo.u32All; + + /* enable watch flag if address is not zero*/ + if (adw_info->watch_address[i] > 0) + cntl.bitfields.valid = 1; + else + cntl.bitfields.valid = 0; + + aw_reg_add_dword = + dbgdev->dev->kfd2kgd->address_watch_get_offset( + dbgdev->dev->kgd, + i, + ADDRESS_WATCH_REG_CNTL); + + aw_reg_add_dword /= sizeof(uint32_t); + + packets_vec[3].bitfields2.reg_offset = + aw_reg_add_dword - AMD_CONFIG_REG_BASE; + packets_vec[3].reg_data[0] = cntl.u32All; + + status = dbgdev_diq_submit_ib( + dbgdev, + adw_info->process->pasid, + mem_obj->gpu_addr, + packet_buff_uint, + ib_size); + + if (status != 0) { + pr_err("amdkfd: Failed to submit IB to DIQ\n"); + break; + } + } + + kfd_gtt_sa_free(dbgdev->dev, mem_obj); + return status; +} + +static int dbgdev_wave_control_set_registers( + struct dbg_wave_control_info *wac_info, + union SQ_CMD_BITS *in_reg_sq_cmd, + union GRBM_GFX_INDEX_BITS *in_reg_gfx_index) +{ + int status; + union SQ_CMD_BITS reg_sq_cmd; + union GRBM_GFX_INDEX_BITS reg_gfx_index; + struct HsaDbgWaveMsgAMDGen2 *pMsg; + + BUG_ON(!wac_info || !in_reg_sq_cmd || !in_reg_gfx_index); + + reg_sq_cmd.u32All = 0; + reg_gfx_index.u32All = 0; + pMsg = &wac_info->dbgWave_msg.DbgWaveMsg.WaveMsgInfoGen2; + + switch (wac_info->mode) { + /* Send command to single wave */ + case HSA_DBG_WAVEMODE_SINGLE: + /* + * Limit access to the process waves only, + * by setting vmid check + */ + reg_sq_cmd.bits.check_vmid = 1; + reg_sq_cmd.bits.simd_id = pMsg->ui32.SIMD; + reg_sq_cmd.bits.wave_id = pMsg->ui32.WaveId; + reg_sq_cmd.bits.mode = SQ_IND_CMD_MODE_SINGLE; + + reg_gfx_index.bits.sh_index = pMsg->ui32.ShaderArray; + reg_gfx_index.bits.se_index = pMsg->ui32.ShaderEngine; + reg_gfx_index.bits.instance_index = pMsg->ui32.HSACU; + + break; + + /* Send command to all waves with matching VMID */ + case HSA_DBG_WAVEMODE_BROADCAST_PROCESS: + + reg_gfx_index.bits.sh_broadcast_writes = 1; + reg_gfx_index.bits.se_broadcast_writes = 1; + reg_gfx_index.bits.instance_broadcast_writes = 1; + + reg_sq_cmd.bits.mode = SQ_IND_CMD_MODE_BROADCAST; + + break; + + /* Send command to all CU waves with matching VMID */ + case HSA_DBG_WAVEMODE_BROADCAST_PROCESS_CU: + + reg_sq_cmd.bits.check_vmid = 1; + reg_sq_cmd.bits.mode = SQ_IND_CMD_MODE_BROADCAST; + + reg_gfx_index.bits.sh_index = pMsg->ui32.ShaderArray; + reg_gfx_index.bits.se_index = pMsg->ui32.ShaderEngine; + reg_gfx_index.bits.instance_index = pMsg->ui32.HSACU; + + break; + + default: + return -EINVAL; + } + + switch (wac_info->operand) { + case HSA_DBG_WAVEOP_HALT: + reg_sq_cmd.bits.cmd = SQ_IND_CMD_CMD_HALT; + break; + + case HSA_DBG_WAVEOP_RESUME: + reg_sq_cmd.bits.cmd = SQ_IND_CMD_CMD_RESUME; + break; + + case HSA_DBG_WAVEOP_KILL: + reg_sq_cmd.bits.cmd = SQ_IND_CMD_CMD_KILL; + break; + + case HSA_DBG_WAVEOP_DEBUG: + reg_sq_cmd.bits.cmd = SQ_IND_CMD_CMD_DEBUG; + break; + + case HSA_DBG_WAVEOP_TRAP: + if (wac_info->trapId < MAX_TRAPID) { + reg_sq_cmd.bits.cmd = SQ_IND_CMD_CMD_TRAP; + reg_sq_cmd.bits.trap_id = wac_info->trapId; + } else { + status = -EINVAL; + } + break; + + default: + status = -EINVAL; + break; + } + + if (status == 0) { + *in_reg_sq_cmd = reg_sq_cmd; + *in_reg_gfx_index = reg_gfx_index; + } + + return status; +} + +static int dbgdev_wave_control_diq(struct kfd_dbgdev *dbgdev, + struct dbg_wave_control_info *wac_info) +{ + + int status; + union SQ_CMD_BITS reg_sq_cmd; + union GRBM_GFX_INDEX_BITS reg_gfx_index; + struct kfd_mem_obj *mem_obj; + uint32_t *packet_buff_uint; + struct pm4__set_config_reg *packets_vec; + size_t ib_size = sizeof(struct pm4__set_config_reg) * 3; + + BUG_ON(!dbgdev || !wac_info); + + reg_sq_cmd.u32All = 0; + + status = dbgdev_wave_control_set_registers(wac_info, ®_sq_cmd, + ®_gfx_index); + if (status) { + pr_err("amdkfd: Failed to set wave control registers\n"); + return status; + } + + /* we do not control the VMID in DIQ,so reset it to a known value */ + reg_sq_cmd.bits.vm_id = 0; + + pr_debug("\t\t %30s\n", "* * * * * * * * * * * * * * * * * *"); + + pr_debug("\t\t mode is: %u\n", wac_info->mode); + pr_debug("\t\t operand is: %u\n", wac_info->operand); + pr_debug("\t\t trap id is: %u\n", wac_info->trapId); + pr_debug("\t\t msg value is: %u\n", + wac_info->dbgWave_msg.DbgWaveMsg.WaveMsgInfoGen2.Value); + pr_debug("\t\t vmid is: N/A\n"); + + pr_debug("\t\t chk_vmid is : %u\n", reg_sq_cmd.bitfields.check_vmid); + pr_debug("\t\t command is : %u\n", reg_sq_cmd.bitfields.cmd); + pr_debug("\t\t queue id is : %u\n", reg_sq_cmd.bitfields.queue_id); + pr_debug("\t\t simd id is : %u\n", reg_sq_cmd.bitfields.simd_id); + pr_debug("\t\t mode is : %u\n", reg_sq_cmd.bitfields.mode); + pr_debug("\t\t vm_id is : %u\n", reg_sq_cmd.bitfields.vm_id); + pr_debug("\t\t wave_id is : %u\n", reg_sq_cmd.bitfields.wave_id); + + pr_debug("\t\t ibw is : %u\n", + reg_gfx_index.bitfields.instance_broadcast_writes); + pr_debug("\t\t ii is : %u\n", + reg_gfx_index.bitfields.instance_index); + pr_debug("\t\t sebw is : %u\n", + reg_gfx_index.bitfields.se_broadcast_writes); + pr_debug("\t\t se_ind is : %u\n", reg_gfx_index.bitfields.se_index); + pr_debug("\t\t sh_ind is : %u\n", reg_gfx_index.bitfields.sh_index); + pr_debug("\t\t sbw is : %u\n", + reg_gfx_index.bitfields.sh_broadcast_writes); + + pr_debug("\t\t %30s\n", "* * * * * * * * * * * * * * * * * *"); + + status = kfd_gtt_sa_allocate(dbgdev->dev, ib_size, &mem_obj); + + if (status != 0) { + pr_err("amdkfd: Failed to allocate GART memory\n"); + return status; + } + + packet_buff_uint = mem_obj->cpu_ptr; + + memset(packet_buff_uint, 0, ib_size); + + packets_vec = (struct pm4__set_config_reg *) packet_buff_uint; + packets_vec[0].header.count = 1; + packets_vec[0].header.opcode = IT_SET_UCONFIG_REG; + packets_vec[0].header.type = PM4_TYPE_3; + packets_vec[0].bitfields2.reg_offset = + GRBM_GFX_INDEX / (sizeof(uint32_t)) - + USERCONFIG_REG_BASE; + + packets_vec[0].bitfields2.insert_vmid = 0; + packets_vec[0].reg_data[0] = reg_gfx_index.u32All; + + packets_vec[1].header.count = 1; + packets_vec[1].header.opcode = IT_SET_CONFIG_REG; + packets_vec[1].header.type = PM4_TYPE_3; + packets_vec[1].bitfields2.reg_offset = SQ_CMD / (sizeof(uint32_t)) - + AMD_CONFIG_REG_BASE; + + packets_vec[1].bitfields2.vmid_shift = SQ_CMD_VMID_OFFSET; + packets_vec[1].bitfields2.insert_vmid = 1; + packets_vec[1].reg_data[0] = reg_sq_cmd.u32All; + + /* Restore the GRBM_GFX_INDEX register */ + + reg_gfx_index.u32All = 0; + reg_gfx_index.bits.sh_broadcast_writes = 1; + reg_gfx_index.bits.instance_broadcast_writes = 1; + reg_gfx_index.bits.se_broadcast_writes = 1; + + + packets_vec[2].ordinal1 = packets_vec[0].ordinal1; + packets_vec[2].bitfields2.reg_offset = + GRBM_GFX_INDEX / (sizeof(uint32_t)) - + USERCONFIG_REG_BASE; + + packets_vec[2].bitfields2.insert_vmid = 0; + packets_vec[2].reg_data[0] = reg_gfx_index.u32All; + + status = dbgdev_diq_submit_ib( + dbgdev, + wac_info->process->pasid, + mem_obj->gpu_addr, + packet_buff_uint, + ib_size); + + if (status != 0) + pr_err("amdkfd: Failed to submit IB to DIQ\n"); + + kfd_gtt_sa_free(dbgdev->dev, mem_obj); + + return status; +} + +static int dbgdev_wave_control_nodiq(struct kfd_dbgdev *dbgdev, + struct dbg_wave_control_info *wac_info) +{ + int status; + union SQ_CMD_BITS reg_sq_cmd; + union GRBM_GFX_INDEX_BITS reg_gfx_index; + struct kfd_process_device *pdd; + + BUG_ON(!dbgdev || !dbgdev->dev || !wac_info); + + reg_sq_cmd.u32All = 0; + + /* taking the VMID for that process on the safe way using PDD */ + pdd = kfd_get_process_device_data(dbgdev->dev, wac_info->process); + + if (!pdd) { + pr_err("amdkfd: Failed to get pdd for wave control no DIQ\n"); + return -EFAULT; + } + status = dbgdev_wave_control_set_registers(wac_info, ®_sq_cmd, + ®_gfx_index); + if (status) { + pr_err("amdkfd: Failed to set wave control registers\n"); + return status; + } + + /* for non DIQ we need to patch the VMID: */ + + reg_sq_cmd.bits.vm_id = pdd->qpd.vmid; + + pr_debug("\t\t %30s\n", "* * * * * * * * * * * * * * * * * *"); + + pr_debug("\t\t mode is: %u\n", wac_info->mode); + pr_debug("\t\t operand is: %u\n", wac_info->operand); + pr_debug("\t\t trap id is: %u\n", wac_info->trapId); + pr_debug("\t\t msg value is: %u\n", + wac_info->dbgWave_msg.DbgWaveMsg.WaveMsgInfoGen2.Value); + pr_debug("\t\t vmid is: %u\n", pdd->qpd.vmid); + + pr_debug("\t\t chk_vmid is : %u\n", reg_sq_cmd.bitfields.check_vmid); + pr_debug("\t\t command is : %u\n", reg_sq_cmd.bitfields.cmd); + pr_debug("\t\t queue id is : %u\n", reg_sq_cmd.bitfields.queue_id); + pr_debug("\t\t simd id is : %u\n", reg_sq_cmd.bitfields.simd_id); + pr_debug("\t\t mode is : %u\n", reg_sq_cmd.bitfields.mode); + pr_debug("\t\t vm_id is : %u\n", reg_sq_cmd.bitfields.vm_id); + pr_debug("\t\t wave_id is : %u\n", reg_sq_cmd.bitfields.wave_id); + + pr_debug("\t\t ibw is : %u\n", + reg_gfx_index.bitfields.instance_broadcast_writes); + pr_debug("\t\t ii is : %u\n", + reg_gfx_index.bitfields.instance_index); + pr_debug("\t\t sebw is : %u\n", + reg_gfx_index.bitfields.se_broadcast_writes); + pr_debug("\t\t se_ind is : %u\n", reg_gfx_index.bitfields.se_index); + pr_debug("\t\t sh_ind is : %u\n", reg_gfx_index.bitfields.sh_index); + pr_debug("\t\t sbw is : %u\n", + reg_gfx_index.bitfields.sh_broadcast_writes); + + pr_debug("\t\t %30s\n", "* * * * * * * * * * * * * * * * * *"); + + return dbgdev->dev->kfd2kgd->wave_control_execute(dbgdev->dev->kgd, + reg_gfx_index.u32All, + reg_sq_cmd.u32All); +} + +int dbgdev_wave_reset_wavefronts(struct kfd_dev *dev, struct kfd_process *p) +{ + int status = 0; + unsigned int vmid; + union SQ_CMD_BITS reg_sq_cmd; + union GRBM_GFX_INDEX_BITS reg_gfx_index; + struct kfd_process_device *pdd; + struct dbg_wave_control_info wac_info; + int temp; + int first_vmid_to_scan = 8; + int last_vmid_to_scan = 15; + + first_vmid_to_scan = ffs(dev->shared_resources.compute_vmid_bitmap) - 1; + temp = dev->shared_resources.compute_vmid_bitmap >> first_vmid_to_scan; + last_vmid_to_scan = first_vmid_to_scan + ffz(temp); + + reg_sq_cmd.u32All = 0; + status = 0; + + wac_info.mode = HSA_DBG_WAVEMODE_BROADCAST_PROCESS; + wac_info.operand = HSA_DBG_WAVEOP_KILL; + + pr_debug("Killing all process wavefronts\n"); + + /* Scan all registers in the range ATC_VMID8_PASID_MAPPING .. + * ATC_VMID15_PASID_MAPPING + * to check which VMID the current process is mapped to. */ + + for (vmid = first_vmid_to_scan; vmid <= last_vmid_to_scan; vmid++) { + if (dev->kfd2kgd->get_atc_vmid_pasid_mapping_valid + (dev->kgd, vmid)) { + if (dev->kfd2kgd->get_atc_vmid_pasid_mapping_valid + (dev->kgd, vmid) == p->pasid) { + pr_debug("Killing wave fronts of vmid %d and pasid %d\n", + vmid, p->pasid); + break; + } + } + } + + if (vmid > last_vmid_to_scan) { + pr_err("amdkfd: didn't found vmid for pasid (%d)\n", p->pasid); + return -EFAULT; + } + + /* taking the VMID for that process on the safe way using PDD */ + pdd = kfd_get_process_device_data(dev, p); + if (!pdd) + return -EFAULT; + + status = dbgdev_wave_control_set_registers(&wac_info, ®_sq_cmd, + ®_gfx_index); + if (status != 0) + return -EINVAL; + + /* for non DIQ we need to patch the VMID: */ + reg_sq_cmd.bits.vm_id = vmid; + + dev->kfd2kgd->wave_control_execute(dev->kgd, + reg_gfx_index.u32All, + reg_sq_cmd.u32All); + + return 0; +} + +void kfd_dbgdev_init(struct kfd_dbgdev *pdbgdev, struct kfd_dev *pdev, + enum DBGDEV_TYPE type) +{ + BUG_ON(!pdbgdev || !pdev); + + pdbgdev->dev = pdev; + pdbgdev->kq = NULL; + pdbgdev->type = type; + pdbgdev->pqm = NULL; + + switch (type) { + case DBGDEV_TYPE_NODIQ: + pdbgdev->dbgdev_register = dbgdev_register_nodiq; + pdbgdev->dbgdev_unregister = dbgdev_unregister_nodiq; + pdbgdev->dbgdev_wave_control = dbgdev_wave_control_nodiq; + pdbgdev->dbgdev_address_watch = dbgdev_address_watch_nodiq; + break; + case DBGDEV_TYPE_DIQ: + default: + pdbgdev->dbgdev_register = dbgdev_register_diq; + pdbgdev->dbgdev_unregister = dbgdev_unregister_diq; + pdbgdev->dbgdev_wave_control = dbgdev_wave_control_diq; + pdbgdev->dbgdev_address_watch = dbgdev_address_watch_diq; + break; + } + +} diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.h b/drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.h new file mode 100644 index 000000000..03424c209 --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.h @@ -0,0 +1,193 @@ +/* + * Copyright 2014 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef KFD_DBGDEV_H_ +#define KFD_DBGDEV_H_ + +enum { + SQ_CMD_VMID_OFFSET = 28, + ADDRESS_WATCH_CNTL_OFFSET = 24 +}; + +enum { + PRIV_QUEUE_SYNC_TIME_MS = 200 +}; + +/* CONTEXT reg space definition */ +enum { + CONTEXT_REG_BASE = 0xA000, + CONTEXT_REG_END = 0xA400, + CONTEXT_REG_SIZE = CONTEXT_REG_END - CONTEXT_REG_BASE +}; + +/* USER CONFIG reg space definition */ +enum { + USERCONFIG_REG_BASE = 0xC000, + USERCONFIG_REG_END = 0x10000, + USERCONFIG_REG_SIZE = USERCONFIG_REG_END - USERCONFIG_REG_BASE +}; + +/* CONFIG reg space definition */ +enum { + AMD_CONFIG_REG_BASE = 0x2000, /* in dwords */ + AMD_CONFIG_REG_END = 0x2B00, + AMD_CONFIG_REG_SIZE = AMD_CONFIG_REG_END - AMD_CONFIG_REG_BASE +}; + +/* SH reg space definition */ +enum { + SH_REG_BASE = 0x2C00, + SH_REG_END = 0x3000, + SH_REG_SIZE = SH_REG_END - SH_REG_BASE +}; + +enum SQ_IND_CMD_CMD { + SQ_IND_CMD_CMD_NULL = 0x00000000, + SQ_IND_CMD_CMD_HALT = 0x00000001, + SQ_IND_CMD_CMD_RESUME = 0x00000002, + SQ_IND_CMD_CMD_KILL = 0x00000003, + SQ_IND_CMD_CMD_DEBUG = 0x00000004, + SQ_IND_CMD_CMD_TRAP = 0x00000005, +}; + +enum SQ_IND_CMD_MODE { + SQ_IND_CMD_MODE_SINGLE = 0x00000000, + SQ_IND_CMD_MODE_BROADCAST = 0x00000001, + SQ_IND_CMD_MODE_BROADCAST_QUEUE = 0x00000002, + SQ_IND_CMD_MODE_BROADCAST_PIPE = 0x00000003, + SQ_IND_CMD_MODE_BROADCAST_ME = 0x00000004, +}; + +union SQ_IND_INDEX_BITS { + struct { + uint32_t wave_id:4; + uint32_t simd_id:2; + uint32_t thread_id:6; + uint32_t:1; + uint32_t force_read:1; + uint32_t read_timeout:1; + uint32_t unindexed:1; + uint32_t index:16; + + } bitfields, bits; + uint32_t u32All; + signed int i32All; + float f32All; +}; + +union SQ_IND_CMD_BITS { + struct { + uint32_t data:32; + } bitfields, bits; + uint32_t u32All; + signed int i32All; + float f32All; +}; + +union SQ_CMD_BITS { + struct { + uint32_t cmd:3; + uint32_t:1; + uint32_t mode:3; + uint32_t check_vmid:1; + uint32_t trap_id:3; + uint32_t:5; + uint32_t wave_id:4; + uint32_t simd_id:2; + uint32_t:2; + uint32_t queue_id:3; + uint32_t:1; + uint32_t vm_id:4; + } bitfields, bits; + uint32_t u32All; + signed int i32All; + float f32All; +}; + +union SQ_IND_DATA_BITS { + struct { + uint32_t data:32; + } bitfields, bits; + uint32_t u32All; + signed int i32All; + float f32All; +}; + +union GRBM_GFX_INDEX_BITS { + struct { + uint32_t instance_index:8; + uint32_t sh_index:8; + uint32_t se_index:8; + uint32_t:5; + uint32_t sh_broadcast_writes:1; + uint32_t instance_broadcast_writes:1; + uint32_t se_broadcast_writes:1; + } bitfields, bits; + uint32_t u32All; + signed int i32All; + float f32All; +}; + +union TCP_WATCH_ADDR_H_BITS { + struct { + uint32_t addr:16; + uint32_t:16; + + } bitfields, bits; + uint32_t u32All; + signed int i32All; + float f32All; +}; + +union TCP_WATCH_ADDR_L_BITS { + struct { + uint32_t:6; + uint32_t addr:26; + } bitfields, bits; + uint32_t u32All; + signed int i32All; + float f32All; +}; + +enum { + QUEUESTATE__INVALID = 0, /* so by default we'll get invalid state */ + QUEUESTATE__ACTIVE_COMPLETION_PENDING, + QUEUESTATE__ACTIVE +}; + +union ULARGE_INTEGER { + struct { + uint32_t low_part; + uint32_t high_part; + } u; + unsigned long long quad_part; +}; + + +#define KFD_CIK_VMID_START_OFFSET (8) +#define KFD_CIK_VMID_END_OFFSET (KFD_CIK_VMID_START_OFFSET + (8)) + + +void kfd_dbgdev_init(struct kfd_dbgdev *pdbgdev, struct kfd_dev *pdev, + enum DBGDEV_TYPE type); + +#endif /* KFD_DBGDEV_H_ */ diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_dbgmgr.c b/drivers/gpu/drm/amd/amdkfd/kfd_dbgmgr.c new file mode 100644 index 000000000..56d676396 --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/kfd_dbgmgr.c @@ -0,0 +1,168 @@ +/* + * Copyright 2014 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + */ +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/log2.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/device.h> + +#include "kfd_priv.h" +#include "cik_regs.h" +#include "kfd_pm4_headers.h" +#include "kfd_pm4_headers_diq.h" +#include "kfd_dbgmgr.h" +#include "kfd_dbgdev.h" + +static DEFINE_MUTEX(kfd_dbgmgr_mutex); + +struct mutex *kfd_get_dbgmgr_mutex(void) +{ + return &kfd_dbgmgr_mutex; +} + + +static void kfd_dbgmgr_uninitialize(struct kfd_dbgmgr *pmgr) +{ + BUG_ON(!pmgr); + + kfree(pmgr->dbgdev); + + pmgr->dbgdev = NULL; + pmgr->pasid = 0; + pmgr->dev = NULL; +} + +void kfd_dbgmgr_destroy(struct kfd_dbgmgr *pmgr) +{ + if (pmgr != NULL) { + kfd_dbgmgr_uninitialize(pmgr); + kfree(pmgr); + } +} + +bool kfd_dbgmgr_create(struct kfd_dbgmgr **ppmgr, struct kfd_dev *pdev) +{ + enum DBGDEV_TYPE type = DBGDEV_TYPE_DIQ; + struct kfd_dbgmgr *new_buff; + + BUG_ON(pdev == NULL); + BUG_ON(!pdev->init_complete); + + new_buff = kfd_alloc_struct(new_buff); + if (!new_buff) { + pr_err("amdkfd: Failed to allocate dbgmgr instance\n"); + return false; + } + + new_buff->pasid = 0; + new_buff->dev = pdev; + new_buff->dbgdev = kfd_alloc_struct(new_buff->dbgdev); + if (!new_buff->dbgdev) { + pr_err("amdkfd: Failed to allocate dbgdev instance\n"); + kfree(new_buff); + return false; + } + + /* get actual type of DBGDevice cpsch or not */ + if (sched_policy == KFD_SCHED_POLICY_NO_HWS) + type = DBGDEV_TYPE_NODIQ; + + kfd_dbgdev_init(new_buff->dbgdev, pdev, type); + *ppmgr = new_buff; + + return true; +} + +long kfd_dbgmgr_register(struct kfd_dbgmgr *pmgr, struct kfd_process *p) +{ + BUG_ON(!p || !pmgr || !pmgr->dbgdev); + + if (pmgr->pasid != 0) { + pr_debug("H/W debugger is already active using pasid %d\n", + pmgr->pasid); + return -EBUSY; + } + + /* remember pasid */ + pmgr->pasid = p->pasid; + + /* provide the pqm for diq generation */ + pmgr->dbgdev->pqm = &p->pqm; + + /* activate the actual registering */ + pmgr->dbgdev->dbgdev_register(pmgr->dbgdev); + + return 0; +} + +long kfd_dbgmgr_unregister(struct kfd_dbgmgr *pmgr, struct kfd_process *p) +{ + BUG_ON(!p || !pmgr || !pmgr->dbgdev); + + /* Is the requests coming from the already registered process? */ + if (pmgr->pasid != p->pasid) { + pr_debug("H/W debugger is not registered by calling pasid %d\n", + p->pasid); + return -EINVAL; + } + + pmgr->dbgdev->dbgdev_unregister(pmgr->dbgdev); + + pmgr->pasid = 0; + + return 0; +} + +long kfd_dbgmgr_wave_control(struct kfd_dbgmgr *pmgr, + struct dbg_wave_control_info *wac_info) +{ + BUG_ON(!pmgr || !pmgr->dbgdev || !wac_info); + + /* Is the requests coming from the already registered process? */ + if (pmgr->pasid != wac_info->process->pasid) { + pr_debug("H/W debugger support was not registered for requester pasid %d\n", + wac_info->process->pasid); + return -EINVAL; + } + + return (long) pmgr->dbgdev->dbgdev_wave_control(pmgr->dbgdev, wac_info); +} + +long kfd_dbgmgr_address_watch(struct kfd_dbgmgr *pmgr, + struct dbg_address_watch_info *adw_info) +{ + BUG_ON(!pmgr || !pmgr->dbgdev || !adw_info); + + + /* Is the requests coming from the already registered process? */ + if (pmgr->pasid != adw_info->process->pasid) { + pr_debug("H/W debugger support was not registered for requester pasid %d\n", + adw_info->process->pasid); + return -EINVAL; + } + + return (long) pmgr->dbgdev->dbgdev_address_watch(pmgr->dbgdev, + adw_info); +} + diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_dbgmgr.h b/drivers/gpu/drm/amd/amdkfd/kfd_dbgmgr.h new file mode 100644 index 000000000..257a745ad --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/kfd_dbgmgr.h @@ -0,0 +1,294 @@ +/* + * Copyright 2014 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#ifndef KFD_DBGMGR_H_ +#define KFD_DBGMGR_H_ + +#include "kfd_priv.h" + +/* must align with hsakmttypes definition */ +#pragma pack(push, 4) + +enum HSA_DBG_WAVEOP { + HSA_DBG_WAVEOP_HALT = 1, /* Halts a wavefront */ + HSA_DBG_WAVEOP_RESUME = 2, /* Resumes a wavefront */ + HSA_DBG_WAVEOP_KILL = 3, /* Kills a wavefront */ + HSA_DBG_WAVEOP_DEBUG = 4, /* Causes wavefront to enter + debug mode */ + HSA_DBG_WAVEOP_TRAP = 5, /* Causes wavefront to take + a trap */ + HSA_DBG_NUM_WAVEOP = 5, + HSA_DBG_MAX_WAVEOP = 0xFFFFFFFF +}; + +enum HSA_DBG_WAVEMODE { + /* send command to a single wave */ + HSA_DBG_WAVEMODE_SINGLE = 0, + /* + * Broadcast to all wavefronts of all processes is not + * supported for HSA user mode + */ + + /* send to waves within current process */ + HSA_DBG_WAVEMODE_BROADCAST_PROCESS = 2, + /* send to waves within current process on CU */ + HSA_DBG_WAVEMODE_BROADCAST_PROCESS_CU = 3, + HSA_DBG_NUM_WAVEMODE = 3, + HSA_DBG_MAX_WAVEMODE = 0xFFFFFFFF +}; + +enum HSA_DBG_WAVEMSG_TYPE { + HSA_DBG_WAVEMSG_AUTO = 0, + HSA_DBG_WAVEMSG_USER = 1, + HSA_DBG_WAVEMSG_ERROR = 2, + HSA_DBG_NUM_WAVEMSG, + HSA_DBG_MAX_WAVEMSG = 0xFFFFFFFF +}; + +enum HSA_DBG_WATCH_MODE { + HSA_DBG_WATCH_READ = 0, /* Read operations only */ + HSA_DBG_WATCH_NONREAD = 1, /* Write or Atomic operations only */ + HSA_DBG_WATCH_ATOMIC = 2, /* Atomic Operations only */ + HSA_DBG_WATCH_ALL = 3, /* Read, Write or Atomic operations */ + HSA_DBG_WATCH_NUM, + HSA_DBG_WATCH_SIZE = 0xFFFFFFFF +}; + +/* This structure is hardware specific and may change in the future */ +struct HsaDbgWaveMsgAMDGen2 { + union { + struct ui32 { + uint32_t UserData:8; /* user data */ + uint32_t ShaderArray:1; /* Shader array */ + uint32_t Priv:1; /* Privileged */ + uint32_t Reserved0:4; /* This field is reserved, + should be 0 */ + uint32_t WaveId:4; /* wave id */ + uint32_t SIMD:2; /* SIMD id */ + uint32_t HSACU:4; /* Compute unit */ + uint32_t ShaderEngine:2;/* Shader engine */ + uint32_t MessageType:2; /* see HSA_DBG_WAVEMSG_TYPE */ + uint32_t Reserved1:4; /* This field is reserved, + should be 0 */ + } ui32; + uint32_t Value; + }; + uint32_t Reserved2; +}; + +union HsaDbgWaveMessageAMD { + struct HsaDbgWaveMsgAMDGen2 WaveMsgInfoGen2; + /* for future HsaDbgWaveMsgAMDGen3; */ +}; + +struct HsaDbgWaveMessage { + void *MemoryVA; /* ptr to associated host-accessible data */ + union HsaDbgWaveMessageAMD DbgWaveMsg; +}; + +/* + * TODO: This definitions to be MOVED to kfd_event, once it is implemented. + * + * HSA sync primitive, Event and HW Exception notification API definitions. + * The API functions allow the runtime to define a so-called sync-primitive, + * a SW object combining a user-mode provided "syncvar" and a scheduler event + * that can be signaled through a defined GPU interrupt. A syncvar is + * a process virtual memory location of a certain size that can be accessed + * by CPU and GPU shader code within the process to set and query the content + * within that memory. The definition of the content is determined by the HSA + * runtime and potentially GPU shader code interfacing with the HSA runtime. + * The syncvar values may be commonly written through an PM4 WRITE_DATA packet + * in the user mode instruction stream. The OS scheduler event is typically + * associated and signaled by an interrupt issued by the GPU, but other HSA + * system interrupt conditions from other HW (e.g. IOMMUv2) may be surfaced + * by the KFD by this mechanism, too. */ + +/* these are the new definitions for events */ +enum HSA_EVENTTYPE { + HSA_EVENTTYPE_SIGNAL = 0, /* user-mode generated GPU signal */ + HSA_EVENTTYPE_NODECHANGE = 1, /* HSA node change (attach/detach) */ + HSA_EVENTTYPE_DEVICESTATECHANGE = 2, /* HSA device state change + (start/stop) */ + HSA_EVENTTYPE_HW_EXCEPTION = 3, /* GPU shader exception event */ + HSA_EVENTTYPE_SYSTEM_EVENT = 4, /* GPU SYSCALL with parameter info */ + HSA_EVENTTYPE_DEBUG_EVENT = 5, /* GPU signal for debugging */ + HSA_EVENTTYPE_PROFILE_EVENT = 6,/* GPU signal for profiling */ + HSA_EVENTTYPE_QUEUE_EVENT = 7, /* GPU signal queue idle state + (EOP pm4) */ + /* ... */ + HSA_EVENTTYPE_MAXID, + HSA_EVENTTYPE_TYPE_SIZE = 0xFFFFFFFF +}; + +/* Sub-definitions for various event types: Syncvar */ +struct HsaSyncVar { + union SyncVar { + void *UserData; /* pointer to user mode data */ + uint64_t UserDataPtrValue; /* 64bit compatibility of value */ + } SyncVar; + uint64_t SyncVarSize; +}; + +/* Sub-definitions for various event types: NodeChange */ + +enum HSA_EVENTTYPE_NODECHANGE_FLAGS { + HSA_EVENTTYPE_NODECHANGE_ADD = 0, + HSA_EVENTTYPE_NODECHANGE_REMOVE = 1, + HSA_EVENTTYPE_NODECHANGE_SIZE = 0xFFFFFFFF +}; + +struct HsaNodeChange { + /* HSA node added/removed on the platform */ + enum HSA_EVENTTYPE_NODECHANGE_FLAGS Flags; +}; + +/* Sub-definitions for various event types: DeviceStateChange */ +enum HSA_EVENTTYPE_DEVICESTATECHANGE_FLAGS { + /* device started (and available) */ + HSA_EVENTTYPE_DEVICESTATUSCHANGE_START = 0, + /* device stopped (i.e. unavailable) */ + HSA_EVENTTYPE_DEVICESTATUSCHANGE_STOP = 1, + HSA_EVENTTYPE_DEVICESTATUSCHANGE_SIZE = 0xFFFFFFFF +}; + +enum HSA_DEVICE { + HSA_DEVICE_CPU = 0, + HSA_DEVICE_GPU = 1, + MAX_HSA_DEVICE = 2 +}; + +struct HsaDeviceStateChange { + uint32_t NodeId; /* F-NUMA node that contains the device */ + enum HSA_DEVICE Device; /* device type: GPU or CPU */ + enum HSA_EVENTTYPE_DEVICESTATECHANGE_FLAGS Flags; /* event flags */ +}; + +struct HsaEventData { + enum HSA_EVENTTYPE EventType; /* event type */ + union EventData { + /* + * return data associated with HSA_EVENTTYPE_SIGNAL + * and other events + */ + struct HsaSyncVar SyncVar; + + /* data associated with HSA_EVENTTYPE_NODE_CHANGE */ + struct HsaNodeChange NodeChangeState; + + /* data associated with HSA_EVENTTYPE_DEVICE_STATE_CHANGE */ + struct HsaDeviceStateChange DeviceState; + } EventData; + + /* the following data entries are internal to the KFD & thunk itself */ + + /* internal thunk store for Event data (OsEventHandle) */ + uint64_t HWData1; + /* internal thunk store for Event data (HWAddress) */ + uint64_t HWData2; + /* internal thunk store for Event data (HWData) */ + uint32_t HWData3; +}; + +struct HsaEventDescriptor { + /* event type to allocate */ + enum HSA_EVENTTYPE EventType; + /* H-NUMA node containing GPU device that is event source */ + uint32_t NodeId; + /* pointer to user mode syncvar data, syncvar->UserDataPtrValue + * may be NULL + */ + struct HsaSyncVar SyncVar; +}; + +struct HsaEvent { + uint32_t EventId; + struct HsaEventData EventData; +}; + +#pragma pack(pop) + +enum DBGDEV_TYPE { + DBGDEV_TYPE_ILLEGAL = 0, + DBGDEV_TYPE_NODIQ = 1, + DBGDEV_TYPE_DIQ = 2, + DBGDEV_TYPE_TEST = 3 +}; + +struct dbg_address_watch_info { + struct kfd_process *process; + enum HSA_DBG_WATCH_MODE *watch_mode; + uint64_t *watch_address; + uint64_t *watch_mask; + struct HsaEvent *watch_event; + uint32_t num_watch_points; +}; + +struct dbg_wave_control_info { + struct kfd_process *process; + uint32_t trapId; + enum HSA_DBG_WAVEOP operand; + enum HSA_DBG_WAVEMODE mode; + struct HsaDbgWaveMessage dbgWave_msg; +}; + +struct kfd_dbgdev { + + /* The device that owns this data. */ + struct kfd_dev *dev; + + /* kernel queue for DIQ */ + struct kernel_queue *kq; + + /* a pointer to the pqm of the calling process */ + struct process_queue_manager *pqm; + + /* type of debug device ( DIQ, non DIQ, etc. ) */ + enum DBGDEV_TYPE type; + + /* virtualized function pointers to device dbg */ + int (*dbgdev_register)(struct kfd_dbgdev *dbgdev); + int (*dbgdev_unregister)(struct kfd_dbgdev *dbgdev); + int (*dbgdev_address_watch)(struct kfd_dbgdev *dbgdev, + struct dbg_address_watch_info *adw_info); + int (*dbgdev_wave_control)(struct kfd_dbgdev *dbgdev, + struct dbg_wave_control_info *wac_info); + +}; + +struct kfd_dbgmgr { + unsigned int pasid; + struct kfd_dev *dev; + struct kfd_dbgdev *dbgdev; +}; + +/* prototypes for debug manager functions */ +struct mutex *kfd_get_dbgmgr_mutex(void); +void kfd_dbgmgr_destroy(struct kfd_dbgmgr *pmgr); +bool kfd_dbgmgr_create(struct kfd_dbgmgr **ppmgr, struct kfd_dev *pdev); +long kfd_dbgmgr_register(struct kfd_dbgmgr *pmgr, struct kfd_process *p); +long kfd_dbgmgr_unregister(struct kfd_dbgmgr *pmgr, struct kfd_process *p); +long kfd_dbgmgr_wave_control(struct kfd_dbgmgr *pmgr, + struct dbg_wave_control_info *wac_info); +long kfd_dbgmgr_address_watch(struct kfd_dbgmgr *pmgr, + struct dbg_address_watch_info *adw_info); +#endif /* KFD_DBGMGR_H_ */ diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c index ca7f2d3af..75312c829 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c @@ -33,14 +33,21 @@ static const struct kfd_device_info kaveri_device_info = { .asic_family = CHIP_KAVERI, .max_pasid_bits = 16, + /* max num of queues for KV.TODO should be a dynamic value */ + .max_no_of_hqd = 24, .ih_ring_entry_size = 4 * sizeof(uint32_t), + .event_interrupt_class = &event_interrupt_class_cik, + .num_of_watch_points = 4, .mqd_size_aligned = MQD_SIZE_ALIGNED }; static const struct kfd_device_info carrizo_device_info = { .asic_family = CHIP_CARRIZO, .max_pasid_bits = 16, + /* max num of queues for CZ.TODO should be a dynamic value */ + .max_no_of_hqd = 24, .ih_ring_entry_size = 4 * sizeof(uint32_t), + .event_interrupt_class = &event_interrupt_class_cik, .num_of_watch_points = 4, .mqd_size_aligned = MQD_SIZE_ALIGNED }; @@ -181,6 +188,32 @@ static void iommu_pasid_shutdown_callback(struct pci_dev *pdev, int pasid) kfd_unbind_process_from_device(dev, pasid); } +/* + * This function called by IOMMU driver on PPR failure + */ +static int iommu_invalid_ppr_cb(struct pci_dev *pdev, int pasid, + unsigned long address, u16 flags) +{ + struct kfd_dev *dev; + + dev_warn(kfd_device, + "Invalid PPR device %x:%x.%x pasid %d address 0x%lX flags 0x%X", + PCI_BUS_NUM(pdev->devfn), + PCI_SLOT(pdev->devfn), + PCI_FUNC(pdev->devfn), + pasid, + address, + flags); + + dev = kfd_device_by_pci_dev(pdev); + BUG_ON(dev == NULL); + + kfd_signal_iommu_event(dev, pasid, address, + flags & PPR_FAULT_WRITE, flags & PPR_FAULT_EXEC); + + return AMD_IOMMU_INV_PRI_RSP_INVALID; +} + bool kgd2kfd_device_init(struct kfd_dev *kfd, const struct kgd2kfd_shared_resources *gpu_resources) { @@ -235,6 +268,13 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd, goto kfd_topology_add_device_error; } + if (kfd_interrupt_init(kfd)) { + dev_err(kfd_device, + "Error initializing interrupts for device (%x:%x)\n", + kfd->pdev->vendor, kfd->pdev->device); + goto kfd_interrupt_error; + } + if (!device_iommu_pasid_init(kfd)) { dev_err(kfd_device, "Error initializing iommuv2 for device (%x:%x)\n", @@ -243,6 +283,7 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd, } amd_iommu_set_invalidate_ctx_cb(kfd->pdev, iommu_pasid_shutdown_callback); + amd_iommu_set_invalid_ppr_cb(kfd->pdev, iommu_invalid_ppr_cb); kfd->dqm = device_queue_manager_init(kfd); if (!kfd->dqm) { @@ -259,6 +300,8 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd, goto dqm_start_error; } + kfd->dbgmgr = NULL; + kfd->init_complete = true; dev_info(kfd_device, "added device (%x:%x)\n", kfd->pdev->vendor, kfd->pdev->device); @@ -273,6 +316,8 @@ dqm_start_error: device_queue_manager_error: amd_iommu_free_device(kfd->pdev); device_iommu_pasid_error: + kfd_interrupt_exit(kfd); +kfd_interrupt_error: kfd_topology_remove_device(kfd); kfd_topology_add_device_error: kfd_gtt_sa_fini(kfd); @@ -290,6 +335,7 @@ void kgd2kfd_device_exit(struct kfd_dev *kfd) if (kfd->init_complete) { device_queue_manager_uninit(kfd->dqm); amd_iommu_free_device(kfd->pdev); + kfd_interrupt_exit(kfd); kfd_topology_remove_device(kfd); kfd_gtt_sa_fini(kfd); kfd->kfd2kgd->free_gtt_mem(kfd->kgd, kfd->gtt_mem); @@ -305,6 +351,7 @@ void kgd2kfd_suspend(struct kfd_dev *kfd) if (kfd->init_complete) { kfd->dqm->ops.stop(kfd->dqm); amd_iommu_set_invalidate_ctx_cb(kfd->pdev, NULL); + amd_iommu_set_invalid_ppr_cb(kfd->pdev, NULL); amd_iommu_free_device(kfd->pdev); } } @@ -324,6 +371,7 @@ int kgd2kfd_resume(struct kfd_dev *kfd) return -ENXIO; amd_iommu_set_invalidate_ctx_cb(kfd->pdev, iommu_pasid_shutdown_callback); + amd_iommu_set_invalid_ppr_cb(kfd->pdev, iommu_invalid_ppr_cb); kfd->dqm->ops.start(kfd->dqm); } @@ -333,7 +381,17 @@ int kgd2kfd_resume(struct kfd_dev *kfd) /* This is called directly from KGD at ISR. */ void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry) { - /* Process interrupts / schedule work as necessary */ + if (!kfd->init_complete) + return; + + spin_lock(&kfd->interrupt_lock); + + if (kfd->interrupts_active + && interrupt_is_wanted(kfd, ih_ring_entry) + && enqueue_ih_ring_entry(kfd, ih_ring_entry)) + schedule_work(&kfd->interrupt_work); + + spin_unlock(&kfd->interrupt_lock); } static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size, diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c index 596ee5cd3..4bb7f4223 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c @@ -45,7 +45,8 @@ static int create_compute_queue_nocpsch(struct device_queue_manager *dqm, struct qcm_process_device *qpd); static int execute_queues_cpsch(struct device_queue_manager *dqm, bool lock); -static int destroy_queues_cpsch(struct device_queue_manager *dqm, bool lock); +static int destroy_queues_cpsch(struct device_queue_manager *dqm, + bool preempt_static_queues, bool lock); static int create_sdma_queue_nocpsch(struct device_queue_manager *dqm, struct queue *q, @@ -523,6 +524,17 @@ int init_pipelines(struct device_queue_manager *dqm, return 0; } +static void init_interrupts(struct device_queue_manager *dqm) +{ + unsigned int i; + + BUG_ON(dqm == NULL); + + for (i = 0 ; i < get_pipes_num(dqm) ; i++) + dqm->dev->kfd2kgd->init_interrupts(dqm->dev->kgd, + i + get_first_pipe(dqm)); +} + static int init_scheduler(struct device_queue_manager *dqm) { int retval; @@ -582,6 +594,7 @@ static void uninitialize_nocpsch(struct device_queue_manager *dqm) static int start_nocpsch(struct device_queue_manager *dqm) { + init_interrupts(dqm); return 0; } @@ -615,19 +628,6 @@ static void deallocate_sdma_queue(struct device_queue_manager *dqm, set_bit(sdma_queue_id, (unsigned long *)&dqm->sdma_bitmap); } -static void init_sdma_vm(struct device_queue_manager *dqm, struct queue *q, - struct qcm_process_device *qpd) -{ - uint32_t value = SDMA_ATC; - - if (q->process->is_32bit_user_mode) - value |= SDMA_VA_PTR32 | get_sh_mem_bases_32(qpd_to_pdd(qpd)); - else - value |= SDMA_VA_SHARED_BASE(get_sh_mem_bases_nybble_64( - qpd_to_pdd(qpd))); - q->properties.sdma_vm_addr = value; -} - static int create_sdma_queue_nocpsch(struct device_queue_manager *dqm, struct queue *q, struct qcm_process_device *qpd) @@ -650,7 +650,7 @@ static int create_sdma_queue_nocpsch(struct device_queue_manager *dqm, pr_debug(" sdma queue id: %d\n", q->properties.sdma_queue_id); pr_debug(" sdma engine id: %d\n", q->properties.sdma_engine_id); - init_sdma_vm(dqm, q, qpd); + dqm->ops_asic_specific.init_sdma_vm(dqm, q, qpd); retval = mqd->init_mqd(mqd, &q->mqd, &q->mqd_mem_obj, &q->gart_mqd_addr, &q->properties); if (retval != 0) { @@ -751,6 +751,9 @@ static int start_cpsch(struct device_queue_manager *dqm) dqm->fence_addr = dqm->fence_mem->cpu_ptr; dqm->fence_gpu_addr = dqm->fence_mem->gpu_addr; + + init_interrupts(dqm); + list_for_each_entry(node, &dqm->queues, list) if (node->qpd->pqm->process && dqm->dev) kfd_bind_process_to_device(dqm->dev, @@ -773,7 +776,7 @@ static int stop_cpsch(struct device_queue_manager *dqm) BUG_ON(!dqm); - destroy_queues_cpsch(dqm, true); + destroy_queues_cpsch(dqm, true, true); list_for_each_entry(node, &dqm->queues, list) { pdd = qpd_to_pdd(node->qpd); @@ -827,7 +830,8 @@ static void destroy_kernel_queue_cpsch(struct device_queue_manager *dqm, pr_debug("kfd: In %s\n", __func__); mutex_lock(&dqm->lock); - destroy_queues_cpsch(dqm, false); + /* here we actually preempt the DIQ */ + destroy_queues_cpsch(dqm, true, false); list_del(&kq->list); dqm->queue_count--; qpd->is_debug = false; @@ -883,8 +887,7 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q, return -ENOMEM; } - init_sdma_vm(dqm, q, qpd); - + dqm->ops_asic_specific.init_sdma_vm(dqm, q, qpd); retval = mqd->init_mqd(mqd, &q->mqd, &q->mqd_mem_obj, &q->gart_mqd_addr, &q->properties); if (retval != 0) @@ -912,7 +915,7 @@ out: return retval; } -static int amdkfd_fence_wait_timeout(unsigned int *fence_addr, +int amdkfd_fence_wait_timeout(unsigned int *fence_addr, unsigned int fence_value, unsigned long timeout) { @@ -934,13 +937,16 @@ static int destroy_sdma_queues(struct device_queue_manager *dqm, unsigned int sdma_engine) { return pm_send_unmap_queue(&dqm->packets, KFD_QUEUE_TYPE_SDMA, - KFD_PREEMPT_TYPE_FILTER_ALL_QUEUES, 0, false, + KFD_PREEMPT_TYPE_FILTER_DYNAMIC_QUEUES, 0, false, sdma_engine); } -static int destroy_queues_cpsch(struct device_queue_manager *dqm, bool lock) +static int destroy_queues_cpsch(struct device_queue_manager *dqm, + bool preempt_static_queues, bool lock) { int retval; + enum kfd_preempt_type_filter preempt_type; + struct kfd_process_device *pdd; BUG_ON(!dqm); @@ -959,8 +965,12 @@ static int destroy_queues_cpsch(struct device_queue_manager *dqm, bool lock) destroy_sdma_queues(dqm, 1); } + preempt_type = preempt_static_queues ? + KFD_PREEMPT_TYPE_FILTER_ALL_QUEUES : + KFD_PREEMPT_TYPE_FILTER_DYNAMIC_QUEUES; + retval = pm_send_unmap_queue(&dqm->packets, KFD_QUEUE_TYPE_COMPUTE, - KFD_PREEMPT_TYPE_FILTER_ALL_QUEUES, 0, false, 0); + preempt_type, 0, false, 0); if (retval != 0) goto out; @@ -968,8 +978,14 @@ static int destroy_queues_cpsch(struct device_queue_manager *dqm, bool lock) pm_send_query_status(&dqm->packets, dqm->fence_gpu_addr, KFD_FENCE_COMPLETED); /* should be timed out */ - amdkfd_fence_wait_timeout(dqm->fence_addr, KFD_FENCE_COMPLETED, + retval = amdkfd_fence_wait_timeout(dqm->fence_addr, KFD_FENCE_COMPLETED, QUEUE_PREEMPT_DEFAULT_TIMEOUT_MS); + if (retval != 0) { + pdd = kfd_get_process_device_data(dqm->dev, + kfd_get_process(current)); + pdd->reset_wavefronts = true; + goto out; + } pm_release_ib(&dqm->packets); dqm->active_runlist = false; @@ -988,7 +1004,7 @@ static int execute_queues_cpsch(struct device_queue_manager *dqm, bool lock) if (lock) mutex_lock(&dqm->lock); - retval = destroy_queues_cpsch(dqm, false); + retval = destroy_queues_cpsch(dqm, false, false); if (retval != 0) { pr_err("kfd: the cp might be in an unrecoverable state due to an unsuccessful queues preemption"); goto out; @@ -1023,13 +1039,27 @@ static int destroy_queue_cpsch(struct device_queue_manager *dqm, { int retval; struct mqd_manager *mqd; + bool preempt_all_queues; BUG_ON(!dqm || !qpd || !q); + preempt_all_queues = false; + retval = 0; /* remove queue from list to prevent rescheduling after preemption */ mutex_lock(&dqm->lock); + + if (qpd->is_debug) { + /* + * error, currently we do not allow to destroy a queue + * of a currently debugged process + */ + retval = -EBUSY; + goto failed_try_destroy_debugged_queue; + + } + mqd = dqm->ops.get_mqd_manager(dqm, get_mqd_type_from_queue_type(q->properties.type)); if (!mqd) { @@ -1061,6 +1091,8 @@ static int destroy_queue_cpsch(struct device_queue_manager *dqm, return 0; failed: +failed_try_destroy_debugged_queue: + mutex_unlock(&dqm->lock); return retval; } diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h index 488f51d19..ec4036a09 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h @@ -88,9 +88,11 @@ struct device_queue_manager_ops { struct queue *q, struct qcm_process_device *qpd, int *allocate_vmid); + int (*destroy_queue)(struct device_queue_manager *dqm, struct qcm_process_device *qpd, struct queue *q); + int (*update_queue)(struct device_queue_manager *dqm, struct queue *q); @@ -100,8 +102,10 @@ struct device_queue_manager_ops { int (*register_process)(struct device_queue_manager *dqm, struct qcm_process_device *qpd); + int (*unregister_process)(struct device_queue_manager *dqm, struct qcm_process_device *qpd); + int (*initialize)(struct device_queue_manager *dqm); int (*start)(struct device_queue_manager *dqm); int (*stop)(struct device_queue_manager *dqm); @@ -109,15 +113,32 @@ struct device_queue_manager_ops { int (*create_kernel_queue)(struct device_queue_manager *dqm, struct kernel_queue *kq, struct qcm_process_device *qpd); + void (*destroy_kernel_queue)(struct device_queue_manager *dqm, struct kernel_queue *kq, struct qcm_process_device *qpd); + + bool (*set_cache_memory_policy)(struct device_queue_manager *dqm, + struct qcm_process_device *qpd, + enum cache_policy default_policy, + enum cache_policy alternate_policy, + void __user *alternate_aperture_base, + uint64_t alternate_aperture_size); +}; + +struct device_queue_manager_asic_ops { + int (*register_process)(struct device_queue_manager *dqm, + struct qcm_process_device *qpd); + int (*initialize)(struct device_queue_manager *dqm); bool (*set_cache_memory_policy)(struct device_queue_manager *dqm, struct qcm_process_device *qpd, enum cache_policy default_policy, enum cache_policy alternate_policy, void __user *alternate_aperture_base, uint64_t alternate_aperture_size); + void (*init_sdma_vm)(struct device_queue_manager *dqm, + struct queue *q, + struct qcm_process_device *qpd); }; /** @@ -134,7 +155,7 @@ struct device_queue_manager_ops { struct device_queue_manager { struct device_queue_manager_ops ops; - struct device_queue_manager_ops ops_asic_specific; + struct device_queue_manager_asic_ops ops_asic_specific; struct mqd_manager *mqds[KFD_MQD_TYPE_MAX]; struct packet_manager packets; @@ -157,8 +178,8 @@ struct device_queue_manager { bool active_runlist; }; -void device_queue_manager_init_cik(struct device_queue_manager_ops *ops); -void device_queue_manager_init_vi(struct device_queue_manager_ops *ops); +void device_queue_manager_init_cik(struct device_queue_manager_asic_ops *ops); +void device_queue_manager_init_vi(struct device_queue_manager_asic_ops *ops); void program_sh_mem_settings(struct device_queue_manager *dqm, struct qcm_process_device *qpd); int init_pipelines(struct device_queue_manager *dqm, diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_cik.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_cik.c index 5469efe05..9ce8a20a7 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_cik.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_cik.c @@ -33,12 +33,15 @@ static bool set_cache_memory_policy_cik(struct device_queue_manager *dqm, static int register_process_cik(struct device_queue_manager *dqm, struct qcm_process_device *qpd); static int initialize_cpsch_cik(struct device_queue_manager *dqm); +static void init_sdma_vm(struct device_queue_manager *dqm, struct queue *q, + struct qcm_process_device *qpd); -void device_queue_manager_init_cik(struct device_queue_manager_ops *ops) +void device_queue_manager_init_cik(struct device_queue_manager_asic_ops *ops) { ops->set_cache_memory_policy = set_cache_memory_policy_cik; ops->register_process = register_process_cik; ops->initialize = initialize_cpsch_cik; + ops->init_sdma_vm = init_sdma_vm; } static uint32_t compute_sh_mem_bases_64bit(unsigned int top_address_nybble) @@ -129,6 +132,19 @@ static int register_process_cik(struct device_queue_manager *dqm, return 0; } +static void init_sdma_vm(struct device_queue_manager *dqm, struct queue *q, + struct qcm_process_device *qpd) +{ + uint32_t value = SDMA_ATC; + + if (q->process->is_32bit_user_mode) + value |= SDMA_VA_PTR32 | get_sh_mem_bases_32(qpd_to_pdd(qpd)); + else + value |= SDMA_VA_SHARED_BASE(get_sh_mem_bases_nybble_64( + qpd_to_pdd(qpd))); + q->properties.sdma_vm_addr = value; +} + static int initialize_cpsch_cik(struct device_queue_manager *dqm) { return init_pipelines(dqm, get_pipes_num(dqm), get_first_pipe(dqm)); diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c index 20553dcd2..4c15212a3 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c @@ -32,14 +32,17 @@ static bool set_cache_memory_policy_vi(struct device_queue_manager *dqm, static int register_process_vi(struct device_queue_manager *dqm, struct qcm_process_device *qpd); static int initialize_cpsch_vi(struct device_queue_manager *dqm); +static void init_sdma_vm(struct device_queue_manager *dqm, struct queue *q, + struct qcm_process_device *qpd); -void device_queue_manager_init_vi(struct device_queue_manager_ops *ops) +void device_queue_manager_init_vi(struct device_queue_manager_asic_ops *ops) { pr_warn("amdkfd: VI DQM is not currently supported\n"); ops->set_cache_memory_policy = set_cache_memory_policy_vi; ops->register_process = register_process_vi; ops->initialize = initialize_cpsch_vi; + ops->init_sdma_vm = init_sdma_vm; } static bool set_cache_memory_policy_vi(struct device_queue_manager *dqm, @@ -58,6 +61,11 @@ static int register_process_vi(struct device_queue_manager *dqm, return -1; } +static void init_sdma_vm(struct device_queue_manager *dqm, struct queue *q, + struct qcm_process_device *qpd) +{ +} + static int initialize_cpsch_vi(struct device_queue_manager *dqm) { return 0; diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c b/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c index 17e56dcc8..e621eba63 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c @@ -142,14 +142,13 @@ int kfd_doorbell_mmap(struct kfd_process *process, struct vm_area_struct *vma) vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - pr_debug("kfd: mapping doorbell page in kfd_doorbell_mmap\n" - " target user address == 0x%08llX\n" - " physical address == 0x%08llX\n" - " vm_flags == 0x%04lX\n" - " size == 0x%04lX\n", - (unsigned long long) vma->vm_start, address, vma->vm_flags, - doorbell_process_allocation()); - + pr_debug("mapping doorbell page:\n"); + pr_debug(" target user address == 0x%08llX\n", + (unsigned long long) vma->vm_start); + pr_debug(" physical address == 0x%08llX\n", address); + pr_debug(" vm_flags == 0x%04lX\n", vma->vm_flags); + pr_debug(" size == 0x%04lX\n", + doorbell_process_allocation()); return io_remap_pfn_range(vma, vma->vm_start, diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_events.c b/drivers/gpu/drm/amd/amdkfd/kfd_events.c new file mode 100644 index 000000000..b6e28dcae --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/kfd_events.c @@ -0,0 +1,969 @@ +/* + * Copyright 2014 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#include <linux/mm_types.h> +#include <linux/slab.h> +#include <linux/types.h> +#include <linux/sched.h> +#include <linux/uaccess.h> +#include <linux/mm.h> +#include <linux/mman.h> +#include <linux/memory.h> +#include "kfd_priv.h" +#include "kfd_events.h" +#include <linux/device.h> + +/* + * A task can only be on a single wait_queue at a time, but we need to support + * waiting on multiple events (any/all). + * Instead of each event simply having a wait_queue with sleeping tasks, it + * has a singly-linked list of tasks. + * A thread that wants to sleep creates an array of these, one for each event + * and adds one to each event's waiter chain. + */ +struct kfd_event_waiter { + struct list_head waiters; + struct task_struct *sleeping_task; + + /* Transitions to true when the event this belongs to is signaled. */ + bool activated; + + /* Event */ + struct kfd_event *event; + uint32_t input_index; +}; + +/* + * Over-complicated pooled allocator for event notification slots. + * + * Each signal event needs a 64-bit signal slot where the signaler will write + * a 1 before sending an interrupt.l (This is needed because some interrupts + * do not contain enough spare data bits to identify an event.) + * We get whole pages from vmalloc and map them to the process VA. + * Individual signal events are then allocated a slot in a page. + */ + +struct signal_page { + struct list_head event_pages; /* kfd_process.signal_event_pages */ + uint64_t *kernel_address; + uint64_t __user *user_address; + uint32_t page_index; /* Index into the mmap aperture. */ + unsigned int free_slots; + unsigned long used_slot_bitmap[0]; +}; + +#define SLOTS_PER_PAGE KFD_SIGNAL_EVENT_LIMIT +#define SLOT_BITMAP_SIZE BITS_TO_LONGS(SLOTS_PER_PAGE) +#define BITS_PER_PAGE (ilog2(SLOTS_PER_PAGE)+1) +#define SIGNAL_PAGE_SIZE (sizeof(struct signal_page) + \ + SLOT_BITMAP_SIZE * sizeof(long)) + +/* + * For signal events, the event ID is used as the interrupt user data. + * For SQ s_sendmsg interrupts, this is limited to 8 bits. + */ + +#define INTERRUPT_DATA_BITS 8 +#define SIGNAL_EVENT_ID_SLOT_SHIFT 0 + +static uint64_t *page_slots(struct signal_page *page) +{ + return page->kernel_address; +} + +static bool allocate_free_slot(struct kfd_process *process, + struct signal_page **out_page, + unsigned int *out_slot_index) +{ + struct signal_page *page; + + list_for_each_entry(page, &process->signal_event_pages, event_pages) { + if (page->free_slots > 0) { + unsigned int slot = + find_first_zero_bit(page->used_slot_bitmap, + SLOTS_PER_PAGE); + + __set_bit(slot, page->used_slot_bitmap); + page->free_slots--; + + page_slots(page)[slot] = UNSIGNALED_EVENT_SLOT; + + *out_page = page; + *out_slot_index = slot; + + pr_debug("allocated event signal slot in page %p, slot %d\n", + page, slot); + + return true; + } + } + + pr_debug("No free event signal slots were found for process %p\n", + process); + + return false; +} + +#define list_tail_entry(head, type, member) \ + list_entry((head)->prev, type, member) + +static bool allocate_signal_page(struct file *devkfd, struct kfd_process *p) +{ + void *backing_store; + struct signal_page *page; + + page = kzalloc(SIGNAL_PAGE_SIZE, GFP_KERNEL); + if (!page) + goto fail_alloc_signal_page; + + page->free_slots = SLOTS_PER_PAGE; + + backing_store = (void *) __get_free_pages(GFP_KERNEL | __GFP_ZERO, + get_order(KFD_SIGNAL_EVENT_LIMIT * 8)); + if (!backing_store) + goto fail_alloc_signal_store; + + /* prevent user-mode info leaks */ + memset(backing_store, (uint8_t) UNSIGNALED_EVENT_SLOT, + KFD_SIGNAL_EVENT_LIMIT * 8); + + page->kernel_address = backing_store; + + if (list_empty(&p->signal_event_pages)) + page->page_index = 0; + else + page->page_index = list_tail_entry(&p->signal_event_pages, + struct signal_page, + event_pages)->page_index + 1; + + pr_debug("allocated new event signal page at %p, for process %p\n", + page, p); + pr_debug("page index is %d\n", page->page_index); + + list_add(&page->event_pages, &p->signal_event_pages); + + return true; + +fail_alloc_signal_store: + kfree(page); +fail_alloc_signal_page: + return false; +} + +static bool allocate_event_notification_slot(struct file *devkfd, + struct kfd_process *p, + struct signal_page **page, + unsigned int *signal_slot_index) +{ + bool ret; + + ret = allocate_free_slot(p, page, signal_slot_index); + if (ret == false) { + ret = allocate_signal_page(devkfd, p); + if (ret == true) + ret = allocate_free_slot(p, page, signal_slot_index); + } + + return ret; +} + +/* Assumes that the process's event_mutex is locked. */ +static void release_event_notification_slot(struct signal_page *page, + size_t slot_index) +{ + __clear_bit(slot_index, page->used_slot_bitmap); + page->free_slots++; + + /* We don't free signal pages, they are retained by the process + * and reused until it exits. */ +} + +static struct signal_page *lookup_signal_page_by_index(struct kfd_process *p, + unsigned int page_index) +{ + struct signal_page *page; + + /* + * This is safe because we don't delete signal pages until the + * process exits. + */ + list_for_each_entry(page, &p->signal_event_pages, event_pages) + if (page->page_index == page_index) + return page; + + return NULL; +} + +/* + * Assumes that p->event_mutex is held and of course that p is not going + * away (current or locked). + */ +static struct kfd_event *lookup_event_by_id(struct kfd_process *p, uint32_t id) +{ + struct kfd_event *ev; + + hash_for_each_possible(p->events, ev, events, id) + if (ev->event_id == id) + return ev; + + return NULL; +} + +static u32 make_signal_event_id(struct signal_page *page, + unsigned int signal_slot_index) +{ + return page->page_index | + (signal_slot_index << SIGNAL_EVENT_ID_SLOT_SHIFT); +} + +/* + * Produce a kfd event id for a nonsignal event. + * These are arbitrary numbers, so we do a sequential search through + * the hash table for an unused number. + */ +static u32 make_nonsignal_event_id(struct kfd_process *p) +{ + u32 id; + + for (id = p->next_nonsignal_event_id; + id < KFD_LAST_NONSIGNAL_EVENT_ID && + lookup_event_by_id(p, id) != NULL; + id++) + ; + + if (id < KFD_LAST_NONSIGNAL_EVENT_ID) { + + /* + * What if id == LAST_NONSIGNAL_EVENT_ID - 1? + * Then next_nonsignal_event_id = LAST_NONSIGNAL_EVENT_ID so + * the first loop fails immediately and we proceed with the + * wraparound loop below. + */ + p->next_nonsignal_event_id = id + 1; + + return id; + } + + for (id = KFD_FIRST_NONSIGNAL_EVENT_ID; + id < KFD_LAST_NONSIGNAL_EVENT_ID && + lookup_event_by_id(p, id) != NULL; + id++) + ; + + + if (id < KFD_LAST_NONSIGNAL_EVENT_ID) { + p->next_nonsignal_event_id = id + 1; + return id; + } + + p->next_nonsignal_event_id = KFD_FIRST_NONSIGNAL_EVENT_ID; + return 0; +} + +static struct kfd_event *lookup_event_by_page_slot(struct kfd_process *p, + struct signal_page *page, + unsigned int signal_slot) +{ + return lookup_event_by_id(p, make_signal_event_id(page, signal_slot)); +} + +static int create_signal_event(struct file *devkfd, + struct kfd_process *p, + struct kfd_event *ev) +{ + if (p->signal_event_count == KFD_SIGNAL_EVENT_LIMIT) { + pr_warn("amdkfd: Signal event wasn't created because limit was reached\n"); + return -ENOMEM; + } + + if (!allocate_event_notification_slot(devkfd, p, &ev->signal_page, + &ev->signal_slot_index)) { + pr_warn("amdkfd: Signal event wasn't created because out of kernel memory\n"); + return -ENOMEM; + } + + p->signal_event_count++; + + ev->user_signal_address = + &ev->signal_page->user_address[ev->signal_slot_index]; + + ev->event_id = make_signal_event_id(ev->signal_page, + ev->signal_slot_index); + + pr_debug("signal event number %zu created with id %d, address %p\n", + p->signal_event_count, ev->event_id, + ev->user_signal_address); + + pr_debug("signal event number %zu created with id %d, address %p\n", + p->signal_event_count, ev->event_id, + ev->user_signal_address); + + return 0; +} + +/* + * No non-signal events are supported yet. + * We create them as events that never signal. + * Set event calls from user-mode are failed. + */ +static int create_other_event(struct kfd_process *p, struct kfd_event *ev) +{ + ev->event_id = make_nonsignal_event_id(p); + if (ev->event_id == 0) + return -ENOMEM; + + return 0; +} + +void kfd_event_init_process(struct kfd_process *p) +{ + mutex_init(&p->event_mutex); + hash_init(p->events); + INIT_LIST_HEAD(&p->signal_event_pages); + p->next_nonsignal_event_id = KFD_FIRST_NONSIGNAL_EVENT_ID; + p->signal_event_count = 0; +} + +static void destroy_event(struct kfd_process *p, struct kfd_event *ev) +{ + if (ev->signal_page != NULL) { + release_event_notification_slot(ev->signal_page, + ev->signal_slot_index); + p->signal_event_count--; + } + + /* + * Abandon the list of waiters. Individual waiting threads will + * clean up their own data. + */ + list_del(&ev->waiters); + + hash_del(&ev->events); + kfree(ev); +} + +static void destroy_events(struct kfd_process *p) +{ + struct kfd_event *ev; + struct hlist_node *tmp; + unsigned int hash_bkt; + + hash_for_each_safe(p->events, hash_bkt, tmp, ev, events) + destroy_event(p, ev); +} + +/* + * We assume that the process is being destroyed and there is no need to + * unmap the pages or keep bookkeeping data in order. + */ +static void shutdown_signal_pages(struct kfd_process *p) +{ + struct signal_page *page, *tmp; + + list_for_each_entry_safe(page, tmp, &p->signal_event_pages, + event_pages) { + free_pages((unsigned long)page->kernel_address, + get_order(KFD_SIGNAL_EVENT_LIMIT * 8)); + kfree(page); + } +} + +void kfd_event_free_process(struct kfd_process *p) +{ + destroy_events(p); + shutdown_signal_pages(p); +} + +static bool event_can_be_gpu_signaled(const struct kfd_event *ev) +{ + return ev->type == KFD_EVENT_TYPE_SIGNAL || + ev->type == KFD_EVENT_TYPE_DEBUG; +} + +static bool event_can_be_cpu_signaled(const struct kfd_event *ev) +{ + return ev->type == KFD_EVENT_TYPE_SIGNAL; +} + +int kfd_event_create(struct file *devkfd, struct kfd_process *p, + uint32_t event_type, bool auto_reset, uint32_t node_id, + uint32_t *event_id, uint32_t *event_trigger_data, + uint64_t *event_page_offset, uint32_t *event_slot_index) +{ + int ret = 0; + struct kfd_event *ev = kzalloc(sizeof(*ev), GFP_KERNEL); + + if (!ev) + return -ENOMEM; + + ev->type = event_type; + ev->auto_reset = auto_reset; + ev->signaled = false; + + INIT_LIST_HEAD(&ev->waiters); + + *event_page_offset = 0; + + mutex_lock(&p->event_mutex); + + switch (event_type) { + case KFD_EVENT_TYPE_SIGNAL: + case KFD_EVENT_TYPE_DEBUG: + ret = create_signal_event(devkfd, p, ev); + if (!ret) { + *event_page_offset = (ev->signal_page->page_index | + KFD_MMAP_EVENTS_MASK); + *event_page_offset <<= PAGE_SHIFT; + *event_slot_index = ev->signal_slot_index; + } + break; + default: + ret = create_other_event(p, ev); + break; + } + + if (!ret) { + hash_add(p->events, &ev->events, ev->event_id); + + *event_id = ev->event_id; + *event_trigger_data = ev->event_id; + } else { + kfree(ev); + } + + mutex_unlock(&p->event_mutex); + + return ret; +} + +/* Assumes that p is current. */ +int kfd_event_destroy(struct kfd_process *p, uint32_t event_id) +{ + struct kfd_event *ev; + int ret = 0; + + mutex_lock(&p->event_mutex); + + ev = lookup_event_by_id(p, event_id); + + if (ev) + destroy_event(p, ev); + else + ret = -EINVAL; + + mutex_unlock(&p->event_mutex); + return ret; +} + +static void set_event(struct kfd_event *ev) +{ + struct kfd_event_waiter *waiter; + struct kfd_event_waiter *next; + + /* Auto reset if the list is non-empty and we're waking someone. */ + ev->signaled = !ev->auto_reset || list_empty(&ev->waiters); + + list_for_each_entry_safe(waiter, next, &ev->waiters, waiters) { + waiter->activated = true; + + /* _init because free_waiters will call list_del */ + list_del_init(&waiter->waiters); + + wake_up_process(waiter->sleeping_task); + } +} + +/* Assumes that p is current. */ +int kfd_set_event(struct kfd_process *p, uint32_t event_id) +{ + int ret = 0; + struct kfd_event *ev; + + mutex_lock(&p->event_mutex); + + ev = lookup_event_by_id(p, event_id); + + if (ev && event_can_be_cpu_signaled(ev)) + set_event(ev); + else + ret = -EINVAL; + + mutex_unlock(&p->event_mutex); + return ret; +} + +static void reset_event(struct kfd_event *ev) +{ + ev->signaled = false; +} + +/* Assumes that p is current. */ +int kfd_reset_event(struct kfd_process *p, uint32_t event_id) +{ + int ret = 0; + struct kfd_event *ev; + + mutex_lock(&p->event_mutex); + + ev = lookup_event_by_id(p, event_id); + + if (ev && event_can_be_cpu_signaled(ev)) + reset_event(ev); + else + ret = -EINVAL; + + mutex_unlock(&p->event_mutex); + return ret; + +} + +static void acknowledge_signal(struct kfd_process *p, struct kfd_event *ev) +{ + page_slots(ev->signal_page)[ev->signal_slot_index] = + UNSIGNALED_EVENT_SLOT; +} + +static bool is_slot_signaled(struct signal_page *page, unsigned int index) +{ + return page_slots(page)[index] != UNSIGNALED_EVENT_SLOT; +} + +static void set_event_from_interrupt(struct kfd_process *p, + struct kfd_event *ev) +{ + if (ev && event_can_be_gpu_signaled(ev)) { + acknowledge_signal(p, ev); + set_event(ev); + } +} + +void kfd_signal_event_interrupt(unsigned int pasid, uint32_t partial_id, + uint32_t valid_id_bits) +{ + struct kfd_event *ev; + + /* + * Because we are called from arbitrary context (workqueue) as opposed + * to process context, kfd_process could attempt to exit while we are + * running so the lookup function returns a locked process. + */ + struct kfd_process *p = kfd_lookup_process_by_pasid(pasid); + + if (!p) + return; /* Presumably process exited. */ + + mutex_lock(&p->event_mutex); + + if (valid_id_bits >= INTERRUPT_DATA_BITS) { + /* Partial ID is a full ID. */ + ev = lookup_event_by_id(p, partial_id); + set_event_from_interrupt(p, ev); + } else { + /* + * Partial ID is in fact partial. For now we completely + * ignore it, but we could use any bits we did receive to + * search faster. + */ + struct signal_page *page; + unsigned i; + + list_for_each_entry(page, &p->signal_event_pages, event_pages) + for (i = 0; i < SLOTS_PER_PAGE; i++) + if (is_slot_signaled(page, i)) { + ev = lookup_event_by_page_slot(p, + page, i); + set_event_from_interrupt(p, ev); + } + } + + mutex_unlock(&p->event_mutex); + mutex_unlock(&p->mutex); +} + +static struct kfd_event_waiter *alloc_event_waiters(uint32_t num_events) +{ + struct kfd_event_waiter *event_waiters; + uint32_t i; + + event_waiters = kmalloc_array(num_events, + sizeof(struct kfd_event_waiter), + GFP_KERNEL); + + for (i = 0; (event_waiters) && (i < num_events) ; i++) { + INIT_LIST_HEAD(&event_waiters[i].waiters); + event_waiters[i].sleeping_task = current; + event_waiters[i].activated = false; + } + + return event_waiters; +} + +static int init_event_waiter(struct kfd_process *p, + struct kfd_event_waiter *waiter, + uint32_t event_id, + uint32_t input_index) +{ + struct kfd_event *ev = lookup_event_by_id(p, event_id); + + if (!ev) + return -EINVAL; + + waiter->event = ev; + waiter->input_index = input_index; + waiter->activated = ev->signaled; + ev->signaled = ev->signaled && !ev->auto_reset; + + list_add(&waiter->waiters, &ev->waiters); + + return 0; +} + +static bool test_event_condition(bool all, uint32_t num_events, + struct kfd_event_waiter *event_waiters) +{ + uint32_t i; + uint32_t activated_count = 0; + + for (i = 0; i < num_events; i++) { + if (event_waiters[i].activated) { + if (!all) + return true; + + activated_count++; + } + } + + return activated_count == num_events; +} + +/* + * Copy event specific data, if defined. + * Currently only memory exception events have additional data to copy to user + */ +static bool copy_signaled_event_data(uint32_t num_events, + struct kfd_event_waiter *event_waiters, + struct kfd_event_data __user *data) +{ + struct kfd_hsa_memory_exception_data *src; + struct kfd_hsa_memory_exception_data __user *dst; + struct kfd_event_waiter *waiter; + struct kfd_event *event; + uint32_t i; + + for (i = 0; i < num_events; i++) { + waiter = &event_waiters[i]; + event = waiter->event; + if (waiter->activated && event->type == KFD_EVENT_TYPE_MEMORY) { + dst = &data[waiter->input_index].memory_exception_data; + src = &event->memory_exception_data; + if (copy_to_user(dst, src, + sizeof(struct kfd_hsa_memory_exception_data))) + return false; + } + } + + return true; + +} + + + +static long user_timeout_to_jiffies(uint32_t user_timeout_ms) +{ + if (user_timeout_ms == KFD_EVENT_TIMEOUT_IMMEDIATE) + return 0; + + if (user_timeout_ms == KFD_EVENT_TIMEOUT_INFINITE) + return MAX_SCHEDULE_TIMEOUT; + + /* + * msecs_to_jiffies interprets all values above 2^31-1 as infinite, + * but we consider them finite. + * This hack is wrong, but nobody is likely to notice. + */ + user_timeout_ms = min_t(uint32_t, user_timeout_ms, 0x7FFFFFFF); + + return msecs_to_jiffies(user_timeout_ms) + 1; +} + +static void free_waiters(uint32_t num_events, struct kfd_event_waiter *waiters) +{ + uint32_t i; + + for (i = 0; i < num_events; i++) + list_del(&waiters[i].waiters); + + kfree(waiters); +} + +int kfd_wait_on_events(struct kfd_process *p, + uint32_t num_events, void __user *data, + bool all, uint32_t user_timeout_ms, + enum kfd_event_wait_result *wait_result) +{ + struct kfd_event_data __user *events = + (struct kfd_event_data __user *) data; + uint32_t i; + int ret = 0; + struct kfd_event_waiter *event_waiters = NULL; + long timeout = user_timeout_to_jiffies(user_timeout_ms); + + mutex_lock(&p->event_mutex); + + event_waiters = alloc_event_waiters(num_events); + if (!event_waiters) { + ret = -ENOMEM; + goto fail; + } + + for (i = 0; i < num_events; i++) { + struct kfd_event_data event_data; + + if (copy_from_user(&event_data, &events[i], + sizeof(struct kfd_event_data))) + goto fail; + + ret = init_event_waiter(p, &event_waiters[i], + event_data.event_id, i); + if (ret) + goto fail; + } + + mutex_unlock(&p->event_mutex); + + while (true) { + if (fatal_signal_pending(current)) { + ret = -EINTR; + break; + } + + if (signal_pending(current)) { + /* + * This is wrong when a nonzero, non-infinite timeout + * is specified. We need to use + * ERESTARTSYS_RESTARTBLOCK, but struct restart_block + * contains a union with data for each user and it's + * in generic kernel code that I don't want to + * touch yet. + */ + ret = -ERESTARTSYS; + break; + } + + if (test_event_condition(all, num_events, event_waiters)) { + if (copy_signaled_event_data(num_events, + event_waiters, events)) + *wait_result = KFD_WAIT_COMPLETE; + else + *wait_result = KFD_WAIT_ERROR; + break; + } + + if (timeout <= 0) { + *wait_result = KFD_WAIT_TIMEOUT; + break; + } + + timeout = schedule_timeout_interruptible(timeout); + } + __set_current_state(TASK_RUNNING); + + mutex_lock(&p->event_mutex); + free_waiters(num_events, event_waiters); + mutex_unlock(&p->event_mutex); + + return ret; + +fail: + if (event_waiters) + free_waiters(num_events, event_waiters); + + mutex_unlock(&p->event_mutex); + + *wait_result = KFD_WAIT_ERROR; + + return ret; +} + +int kfd_event_mmap(struct kfd_process *p, struct vm_area_struct *vma) +{ + + unsigned int page_index; + unsigned long pfn; + struct signal_page *page; + + /* check required size is logical */ + if (get_order(KFD_SIGNAL_EVENT_LIMIT * 8) != + get_order(vma->vm_end - vma->vm_start)) { + pr_err("amdkfd: event page mmap requested illegal size\n"); + return -EINVAL; + } + + page_index = vma->vm_pgoff; + + page = lookup_signal_page_by_index(p, page_index); + if (!page) { + /* Probably KFD bug, but mmap is user-accessible. */ + pr_debug("signal page could not be found for page_index %u\n", + page_index); + return -EINVAL; + } + + pfn = __pa(page->kernel_address); + pfn >>= PAGE_SHIFT; + + vma->vm_flags |= VM_IO | VM_DONTCOPY | VM_DONTEXPAND | VM_NORESERVE + | VM_DONTDUMP | VM_PFNMAP; + + pr_debug("mapping signal page\n"); + pr_debug(" start user address == 0x%08lx\n", vma->vm_start); + pr_debug(" end user address == 0x%08lx\n", vma->vm_end); + pr_debug(" pfn == 0x%016lX\n", pfn); + pr_debug(" vm_flags == 0x%08lX\n", vma->vm_flags); + pr_debug(" size == 0x%08lX\n", + vma->vm_end - vma->vm_start); + + page->user_address = (uint64_t __user *)vma->vm_start; + + /* mapping the page to user process */ + return remap_pfn_range(vma, vma->vm_start, pfn, + vma->vm_end - vma->vm_start, vma->vm_page_prot); +} + +/* + * Assumes that p->event_mutex is held and of course + * that p is not going away (current or locked). + */ +static void lookup_events_by_type_and_signal(struct kfd_process *p, + int type, void *event_data) +{ + struct kfd_hsa_memory_exception_data *ev_data; + struct kfd_event *ev; + int bkt; + bool send_signal = true; + + ev_data = (struct kfd_hsa_memory_exception_data *) event_data; + + hash_for_each(p->events, bkt, ev, events) + if (ev->type == type) { + send_signal = false; + dev_dbg(kfd_device, + "Event found: id %X type %d", + ev->event_id, ev->type); + set_event(ev); + if (ev->type == KFD_EVENT_TYPE_MEMORY && ev_data) + ev->memory_exception_data = *ev_data; + } + + /* Send SIGTERM no event of type "type" has been found*/ + if (send_signal) { + if (send_sigterm) { + dev_warn(kfd_device, + "Sending SIGTERM to HSA Process with PID %d ", + p->lead_thread->pid); + send_sig(SIGTERM, p->lead_thread, 0); + } else { + dev_err(kfd_device, + "HSA Process (PID %d) got unhandled exception", + p->lead_thread->pid); + } + } +} + +void kfd_signal_iommu_event(struct kfd_dev *dev, unsigned int pasid, + unsigned long address, bool is_write_requested, + bool is_execute_requested) +{ + struct kfd_hsa_memory_exception_data memory_exception_data; + struct vm_area_struct *vma; + + /* + * Because we are called from arbitrary context (workqueue) as opposed + * to process context, kfd_process could attempt to exit while we are + * running so the lookup function returns a locked process. + */ + struct kfd_process *p = kfd_lookup_process_by_pasid(pasid); + + if (!p) + return; /* Presumably process exited. */ + + memset(&memory_exception_data, 0, sizeof(memory_exception_data)); + + down_read(&p->mm->mmap_sem); + vma = find_vma(p->mm, address); + + memory_exception_data.gpu_id = dev->id; + memory_exception_data.va = address; + /* Set failure reason */ + memory_exception_data.failure.NotPresent = 1; + memory_exception_data.failure.NoExecute = 0; + memory_exception_data.failure.ReadOnly = 0; + if (vma) { + if (vma->vm_start > address) { + memory_exception_data.failure.NotPresent = 1; + memory_exception_data.failure.NoExecute = 0; + memory_exception_data.failure.ReadOnly = 0; + } else { + memory_exception_data.failure.NotPresent = 0; + if (is_write_requested && !(vma->vm_flags & VM_WRITE)) + memory_exception_data.failure.ReadOnly = 1; + else + memory_exception_data.failure.ReadOnly = 0; + if (is_execute_requested && !(vma->vm_flags & VM_EXEC)) + memory_exception_data.failure.NoExecute = 1; + else + memory_exception_data.failure.NoExecute = 0; + } + } + + up_read(&p->mm->mmap_sem); + + mutex_lock(&p->event_mutex); + + /* Lookup events by type and signal them */ + lookup_events_by_type_and_signal(p, KFD_EVENT_TYPE_MEMORY, + &memory_exception_data); + + mutex_unlock(&p->event_mutex); + mutex_unlock(&p->mutex); +} + +void kfd_signal_hw_exception_event(unsigned int pasid) +{ + /* + * Because we are called from arbitrary context (workqueue) as opposed + * to process context, kfd_process could attempt to exit while we are + * running so the lookup function returns a locked process. + */ + struct kfd_process *p = kfd_lookup_process_by_pasid(pasid); + + if (!p) + return; /* Presumably process exited. */ + + mutex_lock(&p->event_mutex); + + /* Lookup events by type and signal them */ + lookup_events_by_type_and_signal(p, KFD_EVENT_TYPE_HW_EXCEPTION, NULL); + + mutex_unlock(&p->event_mutex); + mutex_unlock(&p->mutex); +} diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_events.h b/drivers/gpu/drm/amd/amdkfd/kfd_events.h new file mode 100644 index 000000000..28f6838b1 --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/kfd_events.h @@ -0,0 +1,84 @@ +/* + * Copyright 2014 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef KFD_EVENTS_H_INCLUDED +#define KFD_EVENTS_H_INCLUDED + +#include <linux/kernel.h> +#include <linux/hashtable.h> +#include <linux/types.h> +#include <linux/list.h> +#include "kfd_priv.h" +#include <uapi/linux/kfd_ioctl.h> + +#define KFD_EVENT_ID_NONSIGNAL_MASK 0x80000000U +#define KFD_FIRST_NONSIGNAL_EVENT_ID KFD_EVENT_ID_NONSIGNAL_MASK +#define KFD_LAST_NONSIGNAL_EVENT_ID UINT_MAX + +/* + * Written into kfd_signal_slot_t to indicate that the event is not signaled. + * Since the event protocol may need to write the event ID into memory, this + * must not be a valid event ID. + * For the sake of easy memset-ing, this must be a byte pattern. + */ +#define UNSIGNALED_EVENT_SLOT ((uint64_t)-1) + +struct kfd_event_waiter; +struct signal_page; + +struct kfd_event { + /* All events in process, rooted at kfd_process.events. */ + struct hlist_node events; + + u32 event_id; + + bool signaled; + bool auto_reset; + + int type; + + struct list_head waiters; /* List of kfd_event_waiter by waiters. */ + + /* Only for signal events. */ + struct signal_page *signal_page; + unsigned int signal_slot_index; + uint64_t __user *user_signal_address; + + /* type specific data */ + union { + struct kfd_hsa_memory_exception_data memory_exception_data; + }; +}; + +#define KFD_EVENT_TIMEOUT_IMMEDIATE 0 +#define KFD_EVENT_TIMEOUT_INFINITE 0xFFFFFFFFu + +/* Matching HSA_EVENTTYPE */ +#define KFD_EVENT_TYPE_SIGNAL 0 +#define KFD_EVENT_TYPE_HW_EXCEPTION 3 +#define KFD_EVENT_TYPE_DEBUG 5 +#define KFD_EVENT_TYPE_MEMORY 8 + +extern void kfd_signal_event_interrupt(unsigned int pasid, uint32_t partial_id, + uint32_t valid_id_bits); + +#endif diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_interrupt.c b/drivers/gpu/drm/amd/amdkfd/kfd_interrupt.c new file mode 100644 index 000000000..7f134aa9b --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/kfd_interrupt.c @@ -0,0 +1,188 @@ +/* + * Copyright 2014 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * KFD Interrupts. + * + * AMD GPUs deliver interrupts by pushing an interrupt description onto the + * interrupt ring and then sending an interrupt. KGD receives the interrupt + * in ISR and sends us a pointer to each new entry on the interrupt ring. + * + * We generally can't process interrupt-signaled events from ISR, so we call + * out to each interrupt client module (currently only the scheduler) to ask if + * each interrupt is interesting. If they return true, then it requires further + * processing so we copy it to an internal interrupt ring and call each + * interrupt client again from a work-queue. + * + * There's no acknowledgment for the interrupts we use. The hardware simply + * queues a new interrupt each time without waiting. + * + * The fixed-size internal queue means that it's possible for us to lose + * interrupts because we have no back-pressure to the hardware. + */ + +#include <linux/slab.h> +#include <linux/device.h> +#include "kfd_priv.h" + +#define KFD_INTERRUPT_RING_SIZE 1024 + +static void interrupt_wq(struct work_struct *); + +int kfd_interrupt_init(struct kfd_dev *kfd) +{ + void *interrupt_ring = kmalloc_array(KFD_INTERRUPT_RING_SIZE, + kfd->device_info->ih_ring_entry_size, + GFP_KERNEL); + if (!interrupt_ring) + return -ENOMEM; + + kfd->interrupt_ring = interrupt_ring; + kfd->interrupt_ring_size = + KFD_INTERRUPT_RING_SIZE * kfd->device_info->ih_ring_entry_size; + atomic_set(&kfd->interrupt_ring_wptr, 0); + atomic_set(&kfd->interrupt_ring_rptr, 0); + + spin_lock_init(&kfd->interrupt_lock); + + INIT_WORK(&kfd->interrupt_work, interrupt_wq); + + kfd->interrupts_active = true; + + /* + * After this function returns, the interrupt will be enabled. This + * barrier ensures that the interrupt running on a different processor + * sees all the above writes. + */ + smp_wmb(); + + return 0; +} + +void kfd_interrupt_exit(struct kfd_dev *kfd) +{ + /* + * Stop the interrupt handler from writing to the ring and scheduling + * workqueue items. The spinlock ensures that any interrupt running + * after we have unlocked sees interrupts_active = false. + */ + unsigned long flags; + + spin_lock_irqsave(&kfd->interrupt_lock, flags); + kfd->interrupts_active = false; + spin_unlock_irqrestore(&kfd->interrupt_lock, flags); + + /* + * Flush_scheduled_work ensures that there are no outstanding + * work-queue items that will access interrupt_ring. New work items + * can't be created because we stopped interrupt handling above. + */ + flush_scheduled_work(); + + kfree(kfd->interrupt_ring); +} + +/* + * This assumes that it can't be called concurrently with itself + * but only with dequeue_ih_ring_entry. + */ +bool enqueue_ih_ring_entry(struct kfd_dev *kfd, const void *ih_ring_entry) +{ + unsigned int rptr = atomic_read(&kfd->interrupt_ring_rptr); + unsigned int wptr = atomic_read(&kfd->interrupt_ring_wptr); + + if ((rptr - wptr) % kfd->interrupt_ring_size == + kfd->device_info->ih_ring_entry_size) { + /* This is very bad, the system is likely to hang. */ + dev_err_ratelimited(kfd_chardev(), + "Interrupt ring overflow, dropping interrupt.\n"); + return false; + } + + memcpy(kfd->interrupt_ring + wptr, ih_ring_entry, + kfd->device_info->ih_ring_entry_size); + + wptr = (wptr + kfd->device_info->ih_ring_entry_size) % + kfd->interrupt_ring_size; + smp_wmb(); /* Ensure memcpy'd data is visible before wptr update. */ + atomic_set(&kfd->interrupt_ring_wptr, wptr); + + return true; +} + +/* + * This assumes that it can't be called concurrently with itself + * but only with enqueue_ih_ring_entry. + */ +static bool dequeue_ih_ring_entry(struct kfd_dev *kfd, void *ih_ring_entry) +{ + /* + * Assume that wait queues have an implicit barrier, i.e. anything that + * happened in the ISR before it queued work is visible. + */ + + unsigned int wptr = atomic_read(&kfd->interrupt_ring_wptr); + unsigned int rptr = atomic_read(&kfd->interrupt_ring_rptr); + + if (rptr == wptr) + return false; + + memcpy(ih_ring_entry, kfd->interrupt_ring + rptr, + kfd->device_info->ih_ring_entry_size); + + rptr = (rptr + kfd->device_info->ih_ring_entry_size) % + kfd->interrupt_ring_size; + + /* + * Ensure the rptr write update is not visible until + * memcpy has finished reading. + */ + smp_mb(); + atomic_set(&kfd->interrupt_ring_rptr, rptr); + + return true; +} + +static void interrupt_wq(struct work_struct *work) +{ + struct kfd_dev *dev = container_of(work, struct kfd_dev, + interrupt_work); + + uint32_t ih_ring_entry[DIV_ROUND_UP( + dev->device_info->ih_ring_entry_size, + sizeof(uint32_t))]; + + while (dequeue_ih_ring_entry(dev, ih_ring_entry)) + dev->device_info->event_interrupt_class->interrupt_wq(dev, + ih_ring_entry); +} + +bool interrupt_is_wanted(struct kfd_dev *dev, const uint32_t *ih_ring_entry) +{ + /* integer and bitwise OR so there is no boolean short-circuiting */ + unsigned wanted = 0; + + wanted |= dev->device_info->event_interrupt_class->interrupt_isr(dev, + ih_ring_entry); + + return wanted != 0; +} diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c index c7d298e62..8fa894100 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c @@ -215,8 +215,9 @@ static int acquire_packet_buffer(struct kernel_queue *kq, queue_address = (unsigned int *)kq->pq_kernel_addr; queue_size_dwords = kq->queue->properties.queue_size / sizeof(uint32_t); - pr_debug("amdkfd: In func %s\nrptr: %d\nwptr: %d\nqueue_address 0x%p\n", - __func__, rptr, wptr, queue_address); + pr_debug("rptr: %d\n", rptr); + pr_debug("wptr: %d\n", wptr); + pr_debug("queue_address 0x%p\n", queue_address); available_size = (rptr - 1 - wptr + queue_size_dwords) % queue_size_dwords; diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_module.c b/drivers/gpu/drm/amd/amdkfd/kfd_module.c index 4e0a68f13..ca8410e86 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_module.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_module.c @@ -29,10 +29,10 @@ #define KFD_DRIVER_AUTHOR "AMD Inc. and others" #define KFD_DRIVER_DESC "Standalone HSA driver for AMD's GPUs" -#define KFD_DRIVER_DATE "20150122" +#define KFD_DRIVER_DATE "20150421" #define KFD_DRIVER_MAJOR 0 #define KFD_DRIVER_MINOR 7 -#define KFD_DRIVER_PATCHLEVEL 1 +#define KFD_DRIVER_PATCHLEVEL 2 static const struct kgd2kfd_calls kgd2kfd = { .exit = kgd2kfd_exit, @@ -54,6 +54,11 @@ module_param(max_num_of_queues_per_device, int, 0444); MODULE_PARM_DESC(max_num_of_queues_per_device, "Maximum number of supported queues per device (1 = Minimum, 4096 = default)"); +int send_sigterm; +module_param(send_sigterm, int, 0444); +MODULE_PARM_DESC(send_sigterm, + "Send sigterm to HSA process on unhandled exception (0 = disable, 1 = enable)"); + bool kgd2kfd_init(unsigned interface_version, const struct kgd2kfd_calls **g2f) { /* diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c index e2533d875..99b6d28a1 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c @@ -163,7 +163,7 @@ static int pm_create_map_process(struct packet_manager *pm, uint32_t *buffer, num_queues = 0; list_for_each_entry(cur, &qpd->queues_list, list) num_queues++; - packet->bitfields10.num_queues = num_queues; + packet->bitfields10.num_queues = (qpd->is_debug) ? 0 : num_queues; packet->sh_mem_config = qpd->sh_mem_config; packet->sh_mem_bases = qpd->sh_mem_bases; @@ -177,9 +177,10 @@ static int pm_create_map_process(struct packet_manager *pm, uint32_t *buffer, } static int pm_create_map_queue(struct packet_manager *pm, uint32_t *buffer, - struct queue *q) + struct queue *q, bool is_static) { struct pm4_map_queues *packet; + bool use_static = is_static; BUG_ON(!pm || !buffer || !q); @@ -209,6 +210,7 @@ static int pm_create_map_queue(struct packet_manager *pm, uint32_t *buffer, case KFD_QUEUE_TYPE_SDMA: packet->bitfields2.engine_sel = engine_sel__mes_map_queues__sdma0; + use_static = false; /* no static queues under SDMA */ break; default: BUG(); @@ -218,6 +220,9 @@ static int pm_create_map_queue(struct packet_manager *pm, uint32_t *buffer, packet->mes_map_queues_ordinals[0].bitfields3.doorbell_offset = q->properties.doorbell_off; + packet->mes_map_queues_ordinals[0].bitfields3.is_static = + (use_static == true) ? 1 : 0; + packet->mes_map_queues_ordinals[0].mqd_addr_lo = lower_32_bits(q->gart_mqd_addr); @@ -271,9 +276,11 @@ static int pm_create_runlist_ib(struct packet_manager *pm, pm_release_ib(pm); return -ENOMEM; } + retval = pm_create_map_process(pm, &rl_buffer[rl_wptr], qpd); if (retval != 0) return retval; + proccesses_mapped++; inc_wptr(&rl_wptr, sizeof(struct pm4_map_process), alloc_size_bytes); @@ -281,23 +288,36 @@ static int pm_create_runlist_ib(struct packet_manager *pm, list_for_each_entry(kq, &qpd->priv_queue_list, list) { if (kq->queue->properties.is_active != true) continue; + + pr_debug("kfd: static_queue, mapping kernel q %d, is debug status %d\n", + kq->queue->queue, qpd->is_debug); + retval = pm_create_map_queue(pm, &rl_buffer[rl_wptr], - kq->queue); + kq->queue, qpd->is_debug); if (retval != 0) return retval; - inc_wptr(&rl_wptr, sizeof(struct pm4_map_queues), - alloc_size_bytes); + + inc_wptr(&rl_wptr, + sizeof(struct pm4_map_queues), + alloc_size_bytes); } list_for_each_entry(q, &qpd->queues_list, list) { if (q->properties.is_active != true) continue; - retval = pm_create_map_queue(pm, - &rl_buffer[rl_wptr], q); + + pr_debug("kfd: static_queue, mapping user queue %d, is debug status %d\n", + q->queue, qpd->is_debug); + + retval = pm_create_map_queue(pm, &rl_buffer[rl_wptr], + q, qpd->is_debug); + if (retval != 0) return retval; - inc_wptr(&rl_wptr, sizeof(struct pm4_map_queues), - alloc_size_bytes); + + inc_wptr(&rl_wptr, + sizeof(struct pm4_map_queues), + alloc_size_bytes); } } @@ -488,7 +508,8 @@ int pm_send_unmap_queue(struct packet_manager *pm, enum kfd_queue_type type, packet = (struct pm4_unmap_queues *)buffer; memset(buffer, 0, sizeof(struct pm4_unmap_queues)); - + pr_debug("kfd: static_queue: unmapping queues: mode is %d , reset is %d , type is %d\n", + mode, reset, type); packet->header.u32all = build_pm4_header(IT_UNMAP_QUEUES, sizeof(struct pm4_unmap_queues)); switch (type) { @@ -529,6 +550,11 @@ int pm_send_unmap_queue(struct packet_manager *pm, enum kfd_queue_type type, packet->bitfields2.queue_sel = queue_sel__mes_unmap_queues__perform_request_on_all_active_queues; break; + case KFD_PREEMPT_TYPE_FILTER_DYNAMIC_QUEUES: + /* in this case, we do not preempt static queues */ + packet->bitfields2.queue_sel = + queue_sel__mes_unmap_queues__perform_request_on_dynamic_queues_only; + break; default: BUG(); break; diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_pm4_headers.h b/drivers/gpu/drm/amd/amdkfd/kfd_pm4_headers.h index 071ad5724..5b393f3e3 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_pm4_headers.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_pm4_headers.h @@ -237,7 +237,8 @@ struct pm4_map_queues { struct { union { struct { - uint32_t reserved5:2; + uint32_t is_static:1; + uint32_t reserved5:1; uint32_t doorbell_offset:21; uint32_t reserved6:3; uint32_t queue:6; @@ -328,7 +329,8 @@ enum unmap_queues_action_enum { enum unmap_queues_queue_sel_enum { queue_sel__mes_unmap_queues__perform_request_on_specified_queues = 0, queue_sel__mes_unmap_queues__perform_request_on_pasid_queues = 1, - queue_sel__mes_unmap_queues__perform_request_on_all_active_queues = 2 + queue_sel__mes_unmap_queues__perform_request_on_all_active_queues = 2, + queue_sel__mes_unmap_queues__perform_request_on_dynamic_queues_only = 3 }; enum unmap_queues_engine_sel_enum { diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_pm4_headers_diq.h b/drivers/gpu/drm/amd/amdkfd/kfd_pm4_headers_diq.h new file mode 100644 index 000000000..a0ff34878 --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/kfd_pm4_headers_diq.h @@ -0,0 +1,290 @@ +/* + * Copyright 2014 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#ifndef KFD_PM4_HEADERS_DIQ_H_ +#define KFD_PM4_HEADERS_DIQ_H_ + +/*--------------------_INDIRECT_BUFFER-------------------- */ + +#ifndef _PM4__INDIRECT_BUFFER_DEFINED +#define _PM4__INDIRECT_BUFFER_DEFINED +enum _INDIRECT_BUFFER_cache_policy_enum { + cache_policy___indirect_buffer__lru = 0, + cache_policy___indirect_buffer__stream = 1, + cache_policy___indirect_buffer__bypass = 2 +}; + +enum { + IT_INDIRECT_BUFFER_PASID = 0x5C +}; + +struct pm4__indirect_buffer_pasid { + union { + union PM4_MES_TYPE_3_HEADER header; /* header */ + unsigned int ordinal1; + }; + + union { + struct { + unsigned int reserved1:2; + unsigned int ib_base_lo:30; + } bitfields2; + unsigned int ordinal2; + }; + + union { + struct { + unsigned int ib_base_hi:16; + unsigned int reserved2:16; + } bitfields3; + unsigned int ordinal3; + }; + + union { + unsigned int control; + unsigned int ordinal4; + }; + + union { + struct { + unsigned int pasid:10; + unsigned int reserved4:22; + } bitfields5; + unsigned int ordinal5; + }; + +}; + +#endif + +/*--------------------_RELEASE_MEM-------------------- */ + +#ifndef _PM4__RELEASE_MEM_DEFINED +#define _PM4__RELEASE_MEM_DEFINED +enum _RELEASE_MEM_event_index_enum { + event_index___release_mem__end_of_pipe = 5, + event_index___release_mem__shader_done = 6 +}; + +enum _RELEASE_MEM_cache_policy_enum { + cache_policy___release_mem__lru = 0, + cache_policy___release_mem__stream = 1, + cache_policy___release_mem__bypass = 2 +}; + +enum _RELEASE_MEM_dst_sel_enum { + dst_sel___release_mem__memory_controller = 0, + dst_sel___release_mem__tc_l2 = 1, + dst_sel___release_mem__queue_write_pointer_register = 2, + dst_sel___release_mem__queue_write_pointer_poll_mask_bit = 3 +}; + +enum _RELEASE_MEM_int_sel_enum { + int_sel___release_mem__none = 0, + int_sel___release_mem__send_interrupt_only = 1, + int_sel___release_mem__send_interrupt_after_write_confirm = 2, + int_sel___release_mem__send_data_after_write_confirm = 3 +}; + +enum _RELEASE_MEM_data_sel_enum { + data_sel___release_mem__none = 0, + data_sel___release_mem__send_32_bit_low = 1, + data_sel___release_mem__send_64_bit_data = 2, + data_sel___release_mem__send_gpu_clock_counter = 3, + data_sel___release_mem__send_cp_perfcounter_hi_lo = 4, + data_sel___release_mem__store_gds_data_to_memory = 5 +}; + +struct pm4__release_mem { + union { + union PM4_MES_TYPE_3_HEADER header; /*header */ + unsigned int ordinal1; + }; + + union { + struct { + unsigned int event_type:6; + unsigned int reserved1:2; + enum _RELEASE_MEM_event_index_enum event_index:4; + unsigned int tcl1_vol_action_ena:1; + unsigned int tc_vol_action_ena:1; + unsigned int reserved2:1; + unsigned int tc_wb_action_ena:1; + unsigned int tcl1_action_ena:1; + unsigned int tc_action_ena:1; + unsigned int reserved3:6; + unsigned int atc:1; + enum _RELEASE_MEM_cache_policy_enum cache_policy:2; + unsigned int reserved4:5; + } bitfields2; + unsigned int ordinal2; + }; + + union { + struct { + unsigned int reserved5:16; + enum _RELEASE_MEM_dst_sel_enum dst_sel:2; + unsigned int reserved6:6; + enum _RELEASE_MEM_int_sel_enum int_sel:3; + unsigned int reserved7:2; + enum _RELEASE_MEM_data_sel_enum data_sel:3; + } bitfields3; + unsigned int ordinal3; + }; + + union { + struct { + unsigned int reserved8:2; + unsigned int address_lo_32b:30; + } bitfields4; + struct { + unsigned int reserved9:3; + unsigned int address_lo_64b:29; + } bitfields5; + unsigned int ordinal4; + }; + + unsigned int address_hi; + + unsigned int data_lo; + + unsigned int data_hi; + +}; +#endif + + +/*--------------------_SET_CONFIG_REG-------------------- */ + +#ifndef _PM4__SET_CONFIG_REG_DEFINED +#define _PM4__SET_CONFIG_REG_DEFINED + +struct pm4__set_config_reg { + union { + union PM4_MES_TYPE_3_HEADER header; /*header */ + unsigned int ordinal1; + }; + + union { + struct { + unsigned int reg_offset:16; + unsigned int reserved1:7; + unsigned int vmid_shift:5; + unsigned int insert_vmid:1; + unsigned int reserved2:3; + } bitfields2; + unsigned int ordinal2; + }; + + unsigned int reg_data[1]; /*1..N of these fields */ + +}; +#endif + +/*--------------------_WAIT_REG_MEM-------------------- */ + +#ifndef _PM4__WAIT_REG_MEM_DEFINED +#define _PM4__WAIT_REG_MEM_DEFINED +enum _WAIT_REG_MEM_function_enum { + function___wait_reg_mem__always_pass = 0, + function___wait_reg_mem__less_than_ref_value = 1, + function___wait_reg_mem__less_than_equal_to_the_ref_value = 2, + function___wait_reg_mem__equal_to_the_reference_value = 3, + function___wait_reg_mem__not_equal_reference_value = 4, + function___wait_reg_mem__greater_than_or_equal_reference_value = 5, + function___wait_reg_mem__greater_than_reference_value = 6, + function___wait_reg_mem__reserved = 7 +}; + +enum _WAIT_REG_MEM_mem_space_enum { + mem_space___wait_reg_mem__register_space = 0, + mem_space___wait_reg_mem__memory_space = 1 +}; + +enum _WAIT_REG_MEM_operation_enum { + operation___wait_reg_mem__wait_reg_mem = 0, + operation___wait_reg_mem__wr_wait_wr_reg = 1 +}; + +struct pm4__wait_reg_mem { + union { + union PM4_MES_TYPE_3_HEADER header; /*header */ + unsigned int ordinal1; + }; + + union { + struct { + enum _WAIT_REG_MEM_function_enum function:3; + unsigned int reserved1:1; + enum _WAIT_REG_MEM_mem_space_enum mem_space:2; + enum _WAIT_REG_MEM_operation_enum operation:2; + unsigned int reserved2:24; + } bitfields2; + unsigned int ordinal2; + }; + + union { + struct { + unsigned int reserved3:2; + unsigned int memory_poll_addr_lo:30; + } bitfields3; + struct { + unsigned int register_poll_addr:16; + unsigned int reserved4:16; + } bitfields4; + struct { + unsigned int register_write_addr:16; + unsigned int reserved5:16; + } bitfields5; + unsigned int ordinal3; + }; + + union { + struct { + unsigned int poll_address_hi:16; + unsigned int reserved6:16; + } bitfields6; + struct { + unsigned int register_write_addr:16; + unsigned int reserved7:16; + } bitfields7; + unsigned int ordinal4; + }; + + unsigned int reference; + + unsigned int mask; + + union { + struct { + unsigned int poll_interval:16; + unsigned int reserved8:16; + } bitfields8; + unsigned int ordinal7; + }; + +}; +#endif + + +#endif /* KFD_PM4_HEADERS_DIQ_H_ */ diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h index f21fccebd..d0d5f4baf 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h @@ -35,6 +35,9 @@ #define KFD_SYSFS_FILE_MODE 0444 +#define KFD_MMAP_DOORBELL_MASK 0x8000000000000 +#define KFD_MMAP_EVENTS_MASK 0x4000000000000 + /* * When working with cp scheduler we should assign the HIQ manually or via * the radeon driver to a fixed hqd slot, here are the fixed HIQ hqd slot @@ -71,6 +74,12 @@ extern int max_num_of_queues_per_device; /* Kernel module parameter to specify the scheduling policy */ extern int sched_policy; +/* + * Kernel module parameter to specify whether to send sigterm to HSA process on + * unhandled exception + */ +extern int send_sigterm; + /** * enum kfd_sched_policy * @@ -108,9 +117,18 @@ enum asic_family_type { CHIP_CARRIZO }; +struct kfd_event_interrupt_class { + bool (*interrupt_isr)(struct kfd_dev *dev, + const uint32_t *ih_ring_entry); + void (*interrupt_wq)(struct kfd_dev *dev, + const uint32_t *ih_ring_entry); +}; + struct kfd_device_info { unsigned int asic_family; + const struct kfd_event_interrupt_class *event_interrupt_class; unsigned int max_pasid_bits; + unsigned int max_no_of_hqd; size_t ih_ring_entry_size; uint8_t num_of_watch_points; uint16_t mqd_size_aligned; @@ -150,8 +168,8 @@ struct kfd_dev { const struct kfd2kgd_calls *kfd2kgd; struct mutex doorbell_mutex; - unsigned long doorbell_available_index[DIV_ROUND_UP( - KFD_MAX_NUM_OF_QUEUES_PER_PROCESS, BITS_PER_LONG)]; + DECLARE_BITMAP(doorbell_available_index, + KFD_MAX_NUM_OF_QUEUES_PER_PROCESS); void *gtt_mem; uint64_t gtt_start_gpu_addr; @@ -161,10 +179,26 @@ struct kfd_dev { unsigned int gtt_sa_chunk_size; unsigned int gtt_sa_num_of_chunks; + /* Interrupts */ + void *interrupt_ring; + size_t interrupt_ring_size; + atomic_t interrupt_ring_rptr; + atomic_t interrupt_ring_wptr; + struct work_struct interrupt_work; + spinlock_t interrupt_lock; + /* QCM Device instance */ struct device_queue_manager *dqm; bool init_complete; + /* + * Interrupts of interest to KFD are copied + * from the HW ring into a SW ring. + */ + bool interrupts_active; + + /* Debug manager */ + struct kfd_dbgmgr *dbgmgr; }; /* KGD2KFD callbacks */ @@ -201,6 +235,7 @@ struct device *kfd_chardev(void); enum kfd_preempt_type_filter { KFD_PREEMPT_TYPE_FILTER_SINGLE_QUEUE, KFD_PREEMPT_TYPE_FILTER_ALL_QUEUES, + KFD_PREEMPT_TYPE_FILTER_DYNAMIC_QUEUES, KFD_PREEMPT_TYPE_FILTER_BY_PASID }; @@ -428,6 +463,11 @@ struct kfd_process_device { /* Is this process/pasid bound to this device? (amd_iommu_bind_pasid) */ bool bound; + + /* This flag tells if we should reset all + * wavefronts on process termination + */ + bool reset_wavefronts; }; #define qpd_to_pdd(x) container_of(x, struct kfd_process_device, qpd) @@ -473,10 +513,17 @@ struct kfd_process { /* Size is queue_array_size, up to MAX_PROCESS_QUEUES. */ struct kfd_queue **queues; - unsigned long allocated_queue_bitmap[DIV_ROUND_UP(KFD_MAX_NUM_OF_QUEUES_PER_PROCESS, BITS_PER_LONG)]; - /*Is the user space process 32 bit?*/ bool is_32bit_user_mode; + + /* Event-related data */ + struct mutex event_mutex; + /* All events in process hashed by ID, linked on kfd_event.events. */ + DECLARE_HASHTABLE(events, 4); + struct list_head signal_event_pages; /* struct slot_page_header. + event_pages */ + u32 next_nonsignal_event_id; + size_t signal_event_count; }; /** @@ -501,6 +548,7 @@ void kfd_process_create_wq(void); void kfd_process_destroy_wq(void); struct kfd_process *kfd_create_process(const struct task_struct *); struct kfd_process *kfd_get_process(const struct task_struct *); +struct kfd_process *kfd_lookup_process_by_pasid(unsigned int pasid); struct kfd_process_device *kfd_bind_process_to_device(struct kfd_dev *dev, struct kfd_process *p); @@ -555,7 +603,11 @@ struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev); struct kfd_dev *kfd_topology_enum_kfd_devices(uint8_t idx); /* Interrupts */ +int kfd_interrupt_init(struct kfd_dev *dev); +void kfd_interrupt_exit(struct kfd_dev *dev); void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry); +bool enqueue_ih_ring_entry(struct kfd_dev *kfd, const void *ih_ring_entry); +bool interrupt_is_wanted(struct kfd_dev *dev, const uint32_t *ih_ring_entry); /* Power Management */ void kgd2kfd_suspend(struct kfd_dev *kfd); @@ -606,6 +658,12 @@ int pqm_create_queue(struct process_queue_manager *pqm, int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid); int pqm_update_queue(struct process_queue_manager *pqm, unsigned int qid, struct queue_properties *p); +struct kernel_queue *pqm_get_kernel_queue(struct process_queue_manager *pqm, + unsigned int qid); + +int amdkfd_fence_wait_timeout(unsigned int *fence_addr, + unsigned int fence_value, + unsigned long timeout); /* Packet Manager */ @@ -642,4 +700,37 @@ uint64_t kfd_get_number_elems(struct kfd_dev *kfd); phys_addr_t kfd_get_process_doorbells(struct kfd_dev *dev, struct kfd_process *process); +/* Events */ +extern const struct kfd_event_interrupt_class event_interrupt_class_cik; +extern const struct kfd_device_global_init_class device_global_init_class_cik; + +enum kfd_event_wait_result { + KFD_WAIT_COMPLETE, + KFD_WAIT_TIMEOUT, + KFD_WAIT_ERROR +}; + +void kfd_event_init_process(struct kfd_process *p); +void kfd_event_free_process(struct kfd_process *p); +int kfd_event_mmap(struct kfd_process *process, struct vm_area_struct *vma); +int kfd_wait_on_events(struct kfd_process *p, + uint32_t num_events, void __user *data, + bool all, uint32_t user_timeout_ms, + enum kfd_event_wait_result *wait_result); +void kfd_signal_event_interrupt(unsigned int pasid, uint32_t partial_id, + uint32_t valid_id_bits); +void kfd_signal_iommu_event(struct kfd_dev *dev, + unsigned int pasid, unsigned long address, + bool is_write_requested, bool is_execute_requested); +void kfd_signal_hw_exception_event(unsigned int pasid); +int kfd_set_event(struct kfd_process *p, uint32_t event_id); +int kfd_reset_event(struct kfd_process *p, uint32_t event_id); +int kfd_event_create(struct file *devkfd, struct kfd_process *p, + uint32_t event_type, bool auto_reset, uint32_t node_id, + uint32_t *event_id, uint32_t *event_trigger_data, + uint64_t *event_page_offset, uint32_t *event_slot_index); +int kfd_event_destroy(struct kfd_process *p, uint32_t event_id); + +int dbgdev_wave_reset_wavefronts(struct kfd_dev *dev, struct kfd_process *p); + #endif diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c index 945d6226d..9be007081 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -31,6 +31,7 @@ struct mm_struct; #include "kfd_priv.h" +#include "kfd_dbgmgr.h" /* * Initial size for the array of queues. @@ -172,12 +173,17 @@ static void kfd_process_wq_release(struct work_struct *work) pr_debug("Releasing pdd (topology id %d) for process (pasid %d) in workqueue\n", pdd->dev->id, p->pasid); + if (pdd->reset_wavefronts) + dbgdev_wave_reset_wavefronts(pdd->dev, p); + amd_iommu_unbind_pasid(pdd->dev->pdev, p->pasid); list_del(&pdd->per_device_list); kfree(pdd); } + kfd_event_free_process(p); + kfd_pasid_free(p->pasid); mutex_unlock(&p->mutex); @@ -203,8 +209,7 @@ static void kfd_process_destroy_delayed(struct rcu_head *rcu) mmdrop(p->mm); - work = (struct kfd_process_release_work *) - kmalloc(sizeof(struct kfd_process_release_work), GFP_ATOMIC); + work = kmalloc(sizeof(struct kfd_process_release_work), GFP_ATOMIC); if (work) { INIT_WORK((struct work_struct *) work, kfd_process_wq_release); @@ -217,6 +222,7 @@ static void kfd_process_notifier_release(struct mmu_notifier *mn, struct mm_struct *mm) { struct kfd_process *p; + struct kfd_process_device *pdd = NULL; /* * The kfd_process structure can not be free because the @@ -235,6 +241,15 @@ static void kfd_process_notifier_release(struct mmu_notifier *mn, /* In case our notifier is called before IOMMU notifier */ pqm_uninit(&p->pqm); + /* Iterate over all process device data structure and check + * if we should reset all wavefronts */ + list_for_each_entry(pdd, &p->per_device_data, per_device_list) + if (pdd->reset_wavefronts) { + pr_warn("amdkfd: Resetting all wave fronts\n"); + dbgdev_wave_reset_wavefronts(pdd->dev, p); + pdd->reset_wavefronts = false; + } + mutex_unlock(&p->mutex); /* @@ -289,6 +304,8 @@ static struct kfd_process *create_process(const struct task_struct *thread) INIT_LIST_HEAD(&process->per_device_data); + kfd_event_init_process(process); + err = pqm_init(&process->pqm, process); if (err != 0) goto err_process_pqm_init; @@ -339,6 +356,7 @@ struct kfd_process_device *kfd_create_process_device_data(struct kfd_dev *dev, INIT_LIST_HEAD(&pdd->qpd.queues_list); INIT_LIST_HEAD(&pdd->qpd.priv_queue_list); pdd->qpd.dqm = dev->dqm; + pdd->reset_wavefronts = false; list_add(&pdd->per_device_list, &p->per_device_data); } @@ -396,18 +414,30 @@ void kfd_unbind_process_from_device(struct kfd_dev *dev, unsigned int pasid) mutex_lock(&p->mutex); + if ((dev->dbgmgr) && (dev->dbgmgr->pasid == p->pasid)) + kfd_dbgmgr_destroy(dev->dbgmgr); + pqm_uninit(&p->pqm); pdd = kfd_get_process_device_data(dev, p); + if (!pdd) { + mutex_unlock(&p->mutex); + return; + } + + if (pdd->reset_wavefronts) { + dbgdev_wave_reset_wavefronts(pdd->dev, p); + pdd->reset_wavefronts = false; + } + /* * Just mark pdd as unbound, because we still need it to call * amd_iommu_unbind_pasid() in when the process exits. * We don't call amd_iommu_unbind_pasid() here * because the IOMMU called us. */ - if (pdd) - pdd->bound = false; + pdd->bound = false; mutex_unlock(&p->mutex); } @@ -431,3 +461,23 @@ bool kfd_has_process_device_data(struct kfd_process *p) { return !(list_empty(&p->per_device_data)); } + +/* This returns with process->mutex locked. */ +struct kfd_process *kfd_lookup_process_by_pasid(unsigned int pasid) +{ + struct kfd_process *p; + unsigned int temp; + + int idx = srcu_read_lock(&kfd_processes_srcu); + + hash_for_each_rcu(kfd_processes_table, temp, p, kfd_processes) { + if (p->pasid == pasid) { + mutex_lock(&p->mutex); + break; + } + } + + srcu_read_unlock(&kfd_processes_srcu, idx); + + return p; +} diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c index 530b82c4e..7b69070f7 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c @@ -158,6 +158,8 @@ int pqm_create_queue(struct process_queue_manager *pqm, struct queue *q; struct process_queue_node *pqn; struct kernel_queue *kq; + int num_queues = 0; + struct queue *cur; BUG_ON(!pqm || !dev || !properties || !qid); @@ -172,6 +174,20 @@ int pqm_create_queue(struct process_queue_manager *pqm, return -1; } + /* + * for debug process, verify that it is within the static queues limit + * currently limit is set to half of the total avail HQD slots + * If we are just about to create DIQ, the is_debug flag is not set yet + * Hence we also check the type as well + */ + if ((pdd->qpd.is_debug) || + (type == KFD_QUEUE_TYPE_DIQ)) { + list_for_each_entry(cur, &pdd->qpd.queues_list, list) + num_queues++; + if (num_queues >= dev->device_info->max_no_of_hqd/2) + return (-ENOSPC); + } + retval = find_available_queue_slot(pqm, qid); if (retval != 0) return retval; @@ -341,7 +357,7 @@ int pqm_update_queue(struct process_queue_manager *pqm, unsigned int qid, return 0; } -static __attribute__((unused)) struct kernel_queue *pqm_get_kernel_queue( +struct kernel_queue *pqm_get_kernel_queue( struct process_queue_manager *pqm, unsigned int qid) { |