This commit is dedicacted to MALI, UMP and MALI_DRM. This includes MALI-r3p2 from other source

1 files changed, 455 insertions, 0 deletions

diff --git a/drivers/gpu/mali/ump/common/ump_kernel_api.c b/drivers/gpu/mali/ump/common/ump_kernel_api.c
new file mode 100644
index 00000000..398781db
--- /dev/null
+++ b/drivers/gpu/mali/ump/common/ump_kernel_api.c
@@ -0,0 +1,455 @@
+/*
+ * Copyright (C) 2010-2014 ARM Limited. All rights reserved.
+ * 
+ * This program is free software and is provided to you under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
+ * 
+ * A copy of the licence is included with the program, and can also be obtained from Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include "mali_osk.h"
+#include "mali_osk_list.h"
+#include "ump_osk.h"
+#include "ump_uk_types.h"
+#include "ump_kernel_interface.h"
+#include "ump_kernel_common.h"
+#include "ump_kernel_random_mapping.h"
+
+
+
+/* ---------------- UMP kernel space API functions follows ---------------- */
+
+
+
+UMP_KERNEL_API_EXPORT ump_secure_id ump_dd_secure_id_get(ump_dd_handle memh)
+{
+	ump_dd_mem *mem = (ump_dd_mem *)memh;
+
+	DEBUG_ASSERT_POINTER(mem);
+
+	DBG_MSG(5, ("Returning secure ID. ID: %u\n", mem->secure_id));
+
+	return mem->secure_id;
+}
+
+
+
+UMP_KERNEL_API_EXPORT ump_dd_handle ump_dd_handle_create_from_secure_id(ump_secure_id secure_id)
+{
+	ump_dd_mem *mem;
+
+	DBG_MSG(5, ("Getting handle from secure ID. ID: %u\n", secure_id));
+	mem = ump_random_mapping_get(device.secure_id_map, (int)secure_id);
+	if (NULL == mem) {
+		DBG_MSG(1, ("Secure ID not found. ID: %u\n", secure_id));
+		return UMP_DD_HANDLE_INVALID;
+	}
+
+	/* Keep the reference taken in ump_random_mapping_get() */
+
+	return (ump_dd_handle)mem;
+}
+
+
+
+UMP_KERNEL_API_EXPORT unsigned long ump_dd_phys_block_count_get(ump_dd_handle memh)
+{
+	ump_dd_mem *mem = (ump_dd_mem *) memh;
+
+	DEBUG_ASSERT_POINTER(mem);
+
+	return mem->nr_blocks;
+}
+
+
+
+UMP_KERNEL_API_EXPORT ump_dd_status_code ump_dd_phys_blocks_get(ump_dd_handle memh, ump_dd_physical_block *blocks, unsigned long num_blocks)
+{
+	ump_dd_mem *mem = (ump_dd_mem *)memh;
+
+	DEBUG_ASSERT_POINTER(mem);
+
+	if (blocks == NULL) {
+		DBG_MSG(1, ("NULL parameter in ump_dd_phys_blocks_get()\n"));
+		return UMP_DD_INVALID;
+	}
+
+	if (mem->nr_blocks != num_blocks) {
+		DBG_MSG(1, ("Specified number of blocks do not match actual number of blocks\n"));
+		return UMP_DD_INVALID;
+	}
+
+	DBG_MSG(5, ("Returning physical block information. ID: %u\n", mem->secure_id));
+
+	_mali_osk_memcpy(blocks, mem->block_array, sizeof(ump_dd_physical_block) * mem->nr_blocks);
+
+	return UMP_DD_SUCCESS;
+}
+
+
+
+UMP_KERNEL_API_EXPORT ump_dd_status_code ump_dd_phys_block_get(ump_dd_handle memh, unsigned long index, ump_dd_physical_block *block)
+{
+	ump_dd_mem *mem = (ump_dd_mem *)memh;
+
+	DEBUG_ASSERT_POINTER(mem);
+
+	if (block == NULL) {
+		DBG_MSG(1, ("NULL parameter in ump_dd_phys_block_get()\n"));
+		return UMP_DD_INVALID;
+	}
+
+	if (index >= mem->nr_blocks) {
+		DBG_MSG(5, ("Invalid index specified in ump_dd_phys_block_get()\n"));
+		return UMP_DD_INVALID;
+	}
+
+	DBG_MSG(5, ("Returning physical block information. ID: %u, index: %lu\n", mem->secure_id, index));
+
+	*block = mem->block_array[index];
+
+	return UMP_DD_SUCCESS;
+}
+
+
+
+UMP_KERNEL_API_EXPORT unsigned long ump_dd_size_get(ump_dd_handle memh)
+{
+	ump_dd_mem *mem = (ump_dd_mem *)memh;
+
+	DEBUG_ASSERT_POINTER(mem);
+
+	DBG_MSG(5, ("Returning size. ID: %u, size: %lu\n", mem->secure_id, mem->size_bytes));
+
+	return mem->size_bytes;
+}
+
+
+
+UMP_KERNEL_API_EXPORT void ump_dd_reference_add(ump_dd_handle memh)
+{
+	ump_dd_mem *mem = (ump_dd_mem *)memh;
+	int new_ref;
+
+	DEBUG_ASSERT_POINTER(mem);
+
+	new_ref = _ump_osk_atomic_inc_and_read(&mem->ref_count);
+
+	DBG_MSG(5, ("Memory reference incremented. ID: %u, new value: %d\n", mem->secure_id, new_ref));
+}
+
+
+
+UMP_KERNEL_API_EXPORT void ump_dd_reference_release(ump_dd_handle memh)
+{
+	ump_dd_mem *mem = (ump_dd_mem *)memh;
+
+	DEBUG_ASSERT_POINTER(mem);
+
+	ump_random_mapping_put(mem);
+}
+
+
+
+/* --------------- Handling of user space requests follows --------------- */
+
+
+_mali_osk_errcode_t _ump_uku_get_api_version(_ump_uk_api_version_s *args)
+{
+	ump_session_data *session_data;
+
+	DEBUG_ASSERT_POINTER(args);
+	DEBUG_ASSERT_POINTER(args->ctx);
+
+	session_data = (ump_session_data *)args->ctx;
+
+	/* check compatability */
+	if (args->version == UMP_IOCTL_API_VERSION) {
+		DBG_MSG(3, ("API version set to newest %d (compatible)\n",
+			    GET_VERSION(args->version)));
+		args->compatible = 1;
+		session_data->api_version = args->version;
+	} else {
+		DBG_MSG(2, ("API version set to %d (incompatible with client version %d)\n",
+			    GET_VERSION(UMP_IOCTL_API_VERSION), GET_VERSION(args->version)));
+		args->compatible = 0;
+		args->version = UMP_IOCTL_API_VERSION; /* report our version */
+	}
+
+	return _MALI_OSK_ERR_OK;
+}
+
+
+_mali_osk_errcode_t _ump_ukk_release(_ump_uk_release_s *release_info)
+{
+	ump_session_memory_list_element *session_memory_element;
+	ump_session_memory_list_element *tmp;
+	ump_session_data *session_data;
+	_mali_osk_errcode_t ret = _MALI_OSK_ERR_INVALID_FUNC;
+	int secure_id;
+
+	DEBUG_ASSERT_POINTER(release_info);
+	DEBUG_ASSERT_POINTER(release_info->ctx);
+
+	/* Retreive the session data */
+	session_data = (ump_session_data *)release_info->ctx;
+
+	/* If there are many items in the memory session list we
+	 * could be de-referencing this pointer a lot so keep a local copy
+	 */
+	secure_id = release_info->secure_id;
+
+	DBG_MSG(4, ("Releasing memory with IOCTL, ID: %u\n", secure_id));
+
+	/* Iterate through the memory list looking for the requested secure ID */
+	_mali_osk_mutex_wait(session_data->lock);
+	_MALI_OSK_LIST_FOREACHENTRY(session_memory_element, tmp, &session_data->list_head_session_memory_list, ump_session_memory_list_element, list) {
+		if (session_memory_element->mem->secure_id == secure_id) {
+			ump_dd_mem *release_mem;
+
+			release_mem = session_memory_element->mem;
+			_mali_osk_list_del(&session_memory_element->list);
+			ump_dd_reference_release(release_mem);
+			_mali_osk_free(session_memory_element);
+
+			ret = _MALI_OSK_ERR_OK;
+			break;
+		}
+	}
+
+	_mali_osk_mutex_signal(session_data->lock);
+	DBG_MSG_IF(1, _MALI_OSK_ERR_OK != ret, ("UMP memory with ID %u does not belong to this session.\n", secure_id));
+
+	DBG_MSG(4, ("_ump_ukk_release() returning 0x%x\n", ret));
+	return ret;
+}
+
+_mali_osk_errcode_t _ump_ukk_size_get(_ump_uk_size_get_s *user_interaction)
+{
+	ump_dd_mem *mem;
+	_mali_osk_errcode_t ret = _MALI_OSK_ERR_FAULT;
+
+	DEBUG_ASSERT_POINTER(user_interaction);
+
+	/* We lock the mappings so things don't get removed while we are looking for the memory */
+	mem = ump_random_mapping_get(device.secure_id_map, user_interaction->secure_id);
+	if (NULL != mem) {
+		user_interaction->size = mem->size_bytes;
+		DBG_MSG(4, ("Returning size. ID: %u, size: %lu ",
+			    (ump_secure_id)user_interaction->secure_id,
+			    (unsigned long)user_interaction->size));
+		ump_random_mapping_put(mem);
+		ret = _MALI_OSK_ERR_OK;
+	} else {
+		user_interaction->size = 0;
+		DBG_MSG(1, ("Failed to look up mapping in ump_ioctl_size_get(). ID: %u\n",
+			    (ump_secure_id)user_interaction->secure_id));
+	}
+
+	return ret;
+}
+
+
+
+void _ump_ukk_msync(_ump_uk_msync_s *args)
+{
+	ump_dd_mem *mem = NULL;
+	void *virtual = NULL;
+	u32 size = 0;
+	u32 offset = 0;
+
+	mem = ump_random_mapping_get(device.secure_id_map, (int)args->secure_id);
+	if (NULL == mem) {
+		DBG_MSG(1, ("Failed to look up mapping in _ump_ukk_msync(). ID: %u\n",
+			    (ump_secure_id)args->secure_id));
+		return;
+	}
+
+	/* Returns the cache settings back to Userspace */
+	args->is_cached = mem->is_cached;
+
+	/* If this flag is the only one set, we should not do the actual flush, only the readout */
+	if (_UMP_UK_MSYNC_READOUT_CACHE_ENABLED == args->op) {
+		DBG_MSG(3, ("_ump_ukk_msync READOUT  ID: %u Enabled: %d\n", (ump_secure_id)args->secure_id, mem->is_cached));
+		goto msync_release_and_return;
+	}
+
+	/* Nothing to do if the memory is not caches */
+	if (0 == mem->is_cached) {
+		DBG_MSG(3, ("_ump_ukk_msync IGNORING ID: %u Enabled: %d  OP: %d\n", (ump_secure_id)args->secure_id, mem->is_cached, args->op));
+		goto msync_release_and_return;
+	}
+	DBG_MSG(3, ("UMP[%02u] _ump_ukk_msync  Flush  OP: %d Address: 0x%08x Mapping: 0x%08x\n",
+		    (ump_secure_id)args->secure_id, args->op, args->address, args->mapping));
+
+	if (args->address) {
+		virtual = (void *)((u32)args->address);
+		offset = (u32)((args->address) - (args->mapping));
+	} else {
+		/* Flush entire mapping when no address is specified. */
+		virtual = args->mapping;
+	}
+	if (args->size) {
+		size = args->size;
+	} else {
+		/* Flush entire mapping when no size is specified. */
+		size = mem->size_bytes - offset;
+	}
+
+	if ((offset + size) > mem->size_bytes) {
+		DBG_MSG(1, ("Trying to flush more than the entire UMP allocation: offset: %u + size: %u > %u\n", offset, size, mem->size_bytes));
+		goto msync_release_and_return;
+	}
+
+	/* The actual cache flush - Implemented for each OS*/
+	_ump_osk_msync(mem, virtual, offset, size, args->op, NULL);
+
+msync_release_and_return:
+	ump_random_mapping_put(mem);
+	return;
+}
+
+void _ump_ukk_cache_operations_control(_ump_uk_cache_operations_control_s *args)
+{
+	ump_session_data *session_data;
+	ump_uk_cache_op_control op;
+
+	DEBUG_ASSERT_POINTER(args);
+	DEBUG_ASSERT_POINTER(args->ctx);
+
+	op = args->op;
+	session_data = (ump_session_data *)args->ctx;
+
+	_mali_osk_mutex_wait(session_data->lock);
+	if (op == _UMP_UK_CACHE_OP_START) {
+		session_data->cache_operations_ongoing++;
+		DBG_MSG(4, ("Cache ops start\n"));
+		if (session_data->cache_operations_ongoing != 1) {
+			DBG_MSG(2, ("UMP: Number of simultanious cache control ops: %d\n", session_data->cache_operations_ongoing));
+		}
+	} else if (op == _UMP_UK_CACHE_OP_FINISH) {
+		DBG_MSG(4, ("Cache ops finish\n"));
+		session_data->cache_operations_ongoing--;
+#if 0
+		if (session_data->has_pending_level1_cache_flush) {
+			/* This function will set has_pending_level1_cache_flush=0 */
+			_ump_osk_msync(NULL, NULL, 0, 0, _UMP_UK_MSYNC_FLUSH_L1, session_data);
+		}
+#endif
+
+		/* to be on the safe side: always flush l1 cache when cache operations are done */
+		_ump_osk_msync(NULL, NULL, 0, 0, _UMP_UK_MSYNC_FLUSH_L1, session_data);
+		DBG_MSG(4, ("Cache ops finish end\n"));
+	} else {
+		DBG_MSG(1, ("Illegal call to %s at line %d\n", __FUNCTION__, __LINE__));
+	}
+	_mali_osk_mutex_signal(session_data->lock);
+
+}
+
+void _ump_ukk_switch_hw_usage(_ump_uk_switch_hw_usage_s *args)
+{
+	ump_dd_mem *mem = NULL;
+	ump_uk_user old_user;
+	ump_uk_msync_op cache_op = _UMP_UK_MSYNC_CLEAN_AND_INVALIDATE;
+	ump_session_data *session_data;
+
+	DEBUG_ASSERT_POINTER(args);
+	DEBUG_ASSERT_POINTER(args->ctx);
+
+	session_data = (ump_session_data *)args->ctx;
+
+	mem = ump_random_mapping_get(device.secure_id_map, (int)args->secure_id);
+	if (NULL == mem) {
+		DBG_MSG(1, ("Failed to look up mapping in _ump_ukk_switch_hw_usage(). ID: %u\n",
+			    (ump_secure_id)args->secure_id));
+		return;
+	}
+
+	old_user = mem->hw_device;
+	mem->hw_device = args->new_user;
+
+	DBG_MSG(3, ("UMP[%02u] Switch usage  Start  New: %s  Prev: %s.\n",
+		    (ump_secure_id)args->secure_id,
+		    args->new_user ? "MALI" : "CPU",
+		    old_user ? "MALI" : "CPU"));
+
+	if (!mem->is_cached) {
+		DBG_MSG(3, ("UMP[%02u] Changing owner of uncached memory. Cache flushing not needed.\n",
+			    (ump_secure_id)args->secure_id));
+		goto out;
+	}
+
+	if (old_user == args->new_user) {
+		DBG_MSG(4, ("UMP[%02u] Setting the new_user equal to previous for. Cache flushing not needed.\n",
+			    (ump_secure_id)args->secure_id));
+		goto out;
+	}
+	if (
+		/* Previous AND new is both different from CPU */
+		(old_user != _UMP_UK_USED_BY_CPU) && (args->new_user != _UMP_UK_USED_BY_CPU)
+	) {
+		DBG_MSG(4, ("UMP[%02u] Previous and new user is not CPU. Cache flushing not needed.\n",
+			    (ump_secure_id)args->secure_id));
+		goto out;
+	}
+
+	if ((old_user != _UMP_UK_USED_BY_CPU) && (args->new_user == _UMP_UK_USED_BY_CPU)) {
+		cache_op = _UMP_UK_MSYNC_INVALIDATE;
+		DBG_MSG(4, ("UMP[%02u] Cache invalidation needed\n", (ump_secure_id)args->secure_id));
+#ifdef UMP_SKIP_INVALIDATION
+#error
+		DBG_MSG(4, ("UMP[%02u] Performing Cache invalidation SKIPPED\n", (ump_secure_id)args->secure_id));
+		goto out;
+#endif
+	}
+
+	/* Take lock to protect: session->cache_operations_ongoing and session->has_pending_level1_cache_flush */
+	_mali_osk_mutex_wait(session_data->lock);
+	/* Actual cache flush */
+	_ump_osk_msync(mem, NULL, 0, mem->size_bytes, cache_op, session_data);
+	_mali_osk_mutex_signal(session_data->lock);
+
+out:
+	ump_random_mapping_put(mem);
+	DBG_MSG(4, ("UMP[%02u] Switch usage  Finish\n", (ump_secure_id)args->secure_id));
+	return;
+}
+
+void _ump_ukk_lock(_ump_uk_lock_s *args)
+{
+	ump_dd_mem *mem = NULL;
+
+	mem = ump_random_mapping_get(device.secure_id_map, (int)args->secure_id);
+	if (NULL == mem) {
+		DBG_MSG(1, ("UMP[%02u] Failed to look up mapping in _ump_ukk_lock(). ID: %u\n",
+			    (ump_secure_id)args->secure_id));
+		return;
+	}
+
+	DBG_MSG(1, ("UMP[%02u] Lock. New lock flag: %d. Old Lock flag:\n", (u32)args->secure_id, (u32)args->lock_usage, (u32) mem->lock_usage));
+
+	mem->lock_usage = (ump_lock_usage) args->lock_usage;
+
+	ump_random_mapping_put(mem);
+}
+
+void _ump_ukk_unlock(_ump_uk_unlock_s *args)
+{
+	ump_dd_mem *mem = NULL;
+
+	mem = ump_random_mapping_get(device.secure_id_map, (int)args->secure_id);
+	if (NULL == mem) {
+		DBG_MSG(1, ("Failed to look up mapping in _ump_ukk_unlock(). ID: %u\n",
+			    (ump_secure_id)args->secure_id));
+		return;
+	}
+
+	DBG_MSG(1, ("UMP[%02u] Unlocking. Old Lock flag:\n",
+		    (u32)args->secure_id, (u32) mem->lock_usage));
+
+	mem->lock_usage = (ump_lock_usage) UMP_NOT_LOCKED;
+
+	ump_random_mapping_put(mem);
+}