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/*
* Copyright (C) 2012-2013 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_dlbu.h"
#include "mali_memory.h"
#include "mali_pp.h"
#include "mali_group.h"
#include "mali_osk.h"
#include "mali_hw_core.h"
/**
* Size of DLBU registers in bytes
*/
#define MALI_DLBU_SIZE 0x400
u32 mali_dlbu_phys_addr = 0;
static mali_io_address mali_dlbu_cpu_addr = 0;
/**
* DLBU register numbers
* Used in the register read/write routines.
* See the hardware documentation for more information about each register
*/
typedef enum mali_dlbu_register {
MALI_DLBU_REGISTER_MASTER_TLLIST_PHYS_ADDR = 0x0000, /**< Master tile list physical base address;
31:12 Physical address to the page used for the DLBU
0 DLBU enable - set this bit to 1 enables the AXI bus
between PPs and L2s, setting to 0 disables the router and
no further transactions are sent to DLBU */
MALI_DLBU_REGISTER_MASTER_TLLIST_VADDR = 0x0004, /**< Master tile list virtual base address;
31:12 Virtual address to the page used for the DLBU */
MALI_DLBU_REGISTER_TLLIST_VBASEADDR = 0x0008, /**< Tile list virtual base address;
31:12 Virtual address to the tile list. This address is used when
calculating the call address sent to PP.*/
MALI_DLBU_REGISTER_FB_DIM = 0x000C, /**< Framebuffer dimension;
23:16 Number of tiles in Y direction-1
7:0 Number of tiles in X direction-1 */
MALI_DLBU_REGISTER_TLLIST_CONF = 0x0010, /**< Tile list configuration;
29:28 select the size of each allocated block: 0=128 bytes, 1=256, 2=512, 3=1024
21:16 2^n number of tiles to be binned to one tile list in Y direction
5:0 2^n number of tiles to be binned to one tile list in X direction */
MALI_DLBU_REGISTER_START_TILE_POS = 0x0014, /**< Start tile positions;
31:24 start position in Y direction for group 1
23:16 start position in X direction for group 1
15:8 start position in Y direction for group 0
7:0 start position in X direction for group 0 */
MALI_DLBU_REGISTER_PP_ENABLE_MASK = 0x0018, /**< PP enable mask;
7 enable PP7 for load balancing
6 enable PP6 for load balancing
5 enable PP5 for load balancing
4 enable PP4 for load balancing
3 enable PP3 for load balancing
2 enable PP2 for load balancing
1 enable PP1 for load balancing
0 enable PP0 for load balancing */
} mali_dlbu_register;
typedef enum
{
PP0ENABLE = 0,
PP1ENABLE,
PP2ENABLE,
PP3ENABLE,
PP4ENABLE,
PP5ENABLE,
PP6ENABLE,
PP7ENABLE
} mali_dlbu_pp_enable;
struct mali_dlbu_core
{
struct mali_hw_core hw_core; /**< Common for all HW cores */
u32 pp_cores_mask; /**< This is a mask for the PP cores whose operation will be controlled by LBU
see MALI_DLBU_REGISTER_PP_ENABLE_MASK register */
};
_mali_osk_errcode_t mali_dlbu_initialize(void)
{
MALI_DEBUG_PRINT(2, ("Mali DLBU: Initializing\n"));
if (_MALI_OSK_ERR_OK == mali_mmu_get_table_page(&mali_dlbu_phys_addr, &mali_dlbu_cpu_addr))
{
MALI_SUCCESS;
}
return _MALI_OSK_ERR_FAULT;
}
void mali_dlbu_terminate(void)
{
MALI_DEBUG_PRINT(3, ("Mali DLBU: terminating\n"));
mali_mmu_release_table_page(mali_dlbu_phys_addr);
}
struct mali_dlbu_core *mali_dlbu_create(const _mali_osk_resource_t * resource)
{
struct mali_dlbu_core *core = NULL;
MALI_DEBUG_PRINT(2, ("Mali DLBU: Creating Mali dynamic load balancing unit: %s\n", resource->description));
core = _mali_osk_malloc(sizeof(struct mali_dlbu_core));
if (NULL != core)
{
if (_MALI_OSK_ERR_OK == mali_hw_core_create(&core->hw_core, resource, MALI_DLBU_SIZE))
{
core->pp_cores_mask = 0;
if (_MALI_OSK_ERR_OK == mali_dlbu_reset(core))
{
return core;
}
MALI_PRINT_ERROR(("Failed to reset DLBU %s\n", core->hw_core.description));
mali_hw_core_delete(&core->hw_core);
}
_mali_osk_free(core);
}
else
{
MALI_PRINT_ERROR(("Mali DLBU: Failed to allocate memory for DLBU core\n"));
}
return NULL;
}
void mali_dlbu_delete(struct mali_dlbu_core *dlbu)
{
MALI_DEBUG_ASSERT_POINTER(dlbu);
mali_dlbu_reset(dlbu);
mali_hw_core_delete(&dlbu->hw_core);
_mali_osk_free(dlbu);
}
_mali_osk_errcode_t mali_dlbu_reset(struct mali_dlbu_core *dlbu)
{
u32 dlbu_registers[7];
_mali_osk_errcode_t err = _MALI_OSK_ERR_FAULT;
MALI_DEBUG_ASSERT_POINTER(dlbu);
MALI_DEBUG_PRINT(4, ("Mali DLBU: mali_dlbu_reset: %s\n", dlbu->hw_core.description));
dlbu_registers[0] = mali_dlbu_phys_addr | 1; /* bit 0 enables the whole core */
dlbu_registers[1] = MALI_DLBU_VIRT_ADDR;
dlbu_registers[2] = 0;
dlbu_registers[3] = 0;
dlbu_registers[4] = 0;
dlbu_registers[5] = 0;
dlbu_registers[6] = dlbu->pp_cores_mask;
/* write reset values to core registers */
mali_hw_core_register_write_array_relaxed(&dlbu->hw_core, MALI_DLBU_REGISTER_MASTER_TLLIST_PHYS_ADDR, dlbu_registers, 7);
err = _MALI_OSK_ERR_OK;
return err;
}
void mali_dlbu_update_mask(struct mali_dlbu_core *dlbu)
{
MALI_DEBUG_ASSERT_POINTER(dlbu);
mali_hw_core_register_write(&dlbu->hw_core, MALI_DLBU_REGISTER_PP_ENABLE_MASK, dlbu->pp_cores_mask);
}
void mali_dlbu_add_group(struct mali_dlbu_core *dlbu, struct mali_group *group)
{
struct mali_pp_core *pp_core;
u32 bcast_id;
MALI_DEBUG_ASSERT_POINTER( dlbu );
MALI_DEBUG_ASSERT_POINTER( group );
pp_core = mali_group_get_pp_core(group);
bcast_id = mali_pp_core_get_bcast_id(pp_core);
dlbu->pp_cores_mask |= bcast_id;
MALI_DEBUG_PRINT(3, ("Mali DLBU: Adding core[%d] New mask= 0x%02x\n", bcast_id , dlbu->pp_cores_mask));
}
/* Remove a group from the DLBU */
void mali_dlbu_remove_group(struct mali_dlbu_core *dlbu, struct mali_group *group)
{
struct mali_pp_core *pp_core;
u32 bcast_id;
MALI_DEBUG_ASSERT_POINTER( dlbu );
MALI_DEBUG_ASSERT_POINTER( group );
pp_core = mali_group_get_pp_core(group);
bcast_id = mali_pp_core_get_bcast_id(pp_core);
dlbu->pp_cores_mask &= ~bcast_id;
MALI_DEBUG_PRINT(3, ("Mali DLBU: Removing core[%d] New mask= 0x%02x\n", bcast_id, dlbu->pp_cores_mask));
}
/* Configure the DLBU for \a job. This needs to be done before the job is started on the groups in the DLBU. */
void mali_dlbu_config_job(struct mali_dlbu_core *dlbu, struct mali_pp_job *job)
{
u32 *registers;
MALI_DEBUG_ASSERT(job);
registers = mali_pp_job_get_dlbu_registers(job);
MALI_DEBUG_PRINT(4, ("Mali DLBU: Starting job\n"));
/* Writing 4 registers:
* DLBU registers except the first two (written once at DLBU initialisation / reset) and the PP_ENABLE_MASK register */
mali_hw_core_register_write_array_relaxed(&dlbu->hw_core, MALI_DLBU_REGISTER_TLLIST_VBASEADDR, registers, 4);
}