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From 037ed9a2ac262e496bb0ddc924895e5f72969961 Mon Sep 17 00:00:00 2001
From: Yair Shachar <yair.shachar@amd.com>
Date: Wed, 20 May 2015 14:08:55 +0300
Subject: [PATCH 0135/1050] drm/amdkfd: Implement (un)register debugger IOCTLs
v2: rename get_dbgmgr_mutex to kfd_get_dbgmgr_mutex to namespace it
Signed-off-by: Yair Shachar <yair.shachar@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 72 +++++++++++++++++++++++++++++++-
1 file changed, 70 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index b358e91..54a3e29 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 *);
@@ -435,7 +436,53 @@ out:
static int kfd_ioctl_dbg_register(struct file *filep,
struct kfd_process *p, void *data)
{
- long status = -EFAULT;
+ 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;
}
@@ -443,7 +490,28 @@ static int kfd_ioctl_dbg_register(struct file *filep,
static int kfd_ioctl_dbg_unrgesiter(struct file *filep,
struct kfd_process *p, void *data)
{
- long status = -EFAULT;
+ 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;
}
--
1.9.1
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