diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_dbgmgr.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_dbgmgr.c | 168 |
1 files changed, 168 insertions, 0 deletions
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); +} + |