diff options
Diffstat (limited to 'drivers/gpu/arm/midgard/platform/juno_soc/mali_kbase_config_juno_soc.c')
-rwxr-xr-x | drivers/gpu/arm/midgard/platform/juno_soc/mali_kbase_config_juno_soc.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/drivers/gpu/arm/midgard/platform/juno_soc/mali_kbase_config_juno_soc.c b/drivers/gpu/arm/midgard/platform/juno_soc/mali_kbase_config_juno_soc.c new file mode 100755 index 000000000000..3baf3d96d41a --- /dev/null +++ b/drivers/gpu/arm/midgard/platform/juno_soc/mali_kbase_config_juno_soc.c @@ -0,0 +1,128 @@ +/* + * + * (C) COPYRIGHT 2011-2015 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 <linux/ioport.h> +#include <linux/thermal.h> +#include <mali_kbase.h> +#include <mali_kbase_defs.h> +#include <mali_kbase_config.h> +#include <mali_kbase_smc.h> + +/* Versatile Express (VE) Juno Development Platform */ + +#define HARD_RESET_AT_POWER_OFF 0 + +#ifndef CONFIG_OF +static struct kbase_io_resources io_resources = { + .job_irq_number = 65, + .mmu_irq_number = 66, + .gpu_irq_number = 64, + .io_memory_region = { + .start = 0x2D000000, + .end = 0x2D000000 + (4096 * 4) - 1} +}; +#endif + +static int pm_callback_power_on(struct kbase_device *kbdev) +{ + /* Nothing is needed on VExpress, but we may have destroyed GPU state (if the below HARD_RESET code is active) */ + return 1; +} + +static void pm_callback_power_off(struct kbase_device *kbdev) +{ +#if HARD_RESET_AT_POWER_OFF + /* Cause a GPU hard reset to test whether we have actually idled the GPU + * and that we properly reconfigure the GPU on power up. + * Usually this would be dangerous, but if the GPU is working correctly it should + * be completely safe as the GPU should not be active at this point. + * However this is disabled normally because it will most likely interfere with + * bus logging etc. + */ + KBASE_TRACE_ADD(kbdev, CORE_GPU_HARD_RESET, NULL, NULL, 0u, 0); + kbase_os_reg_write(kbdev, GPU_CONTROL_REG(GPU_COMMAND), GPU_COMMAND_HARD_RESET); +#endif +} + +struct kbase_pm_callback_conf pm_callbacks = { + .power_on_callback = pm_callback_power_on, + .power_off_callback = pm_callback_power_off, + .power_suspend_callback = NULL, + .power_resume_callback = NULL +}; + +/* + * Juno Secure Mode integration + */ + +/* SMC Function Numbers */ +#define JUNO_SMC_SECURE_ENABLE_FUNC 0xff06 +#define JUNO_SMC_SECURE_DISABLE_FUNC 0xff07 + +static int juno_secure_mode_enable(struct kbase_device *kbdev) +{ + u32 gpu_id = kbdev->gpu_props.props.raw_props.gpu_id; + + if (gpu_id == GPU_ID_MAKE(GPU_ID_PI_T62X, 0, 1, 0) && + kbdev->reg_start == 0x2d000000) { + /* T62X in SoC detected */ + u64 ret = kbase_invoke_smc(SMC_OEN_SIP, + JUNO_SMC_SECURE_ENABLE_FUNC, false, + 0, 0, 0); + return ret; + } + + return -EINVAL; /* Not supported */ +} + +static int juno_secure_mode_disable(struct kbase_device *kbdev) +{ + u32 gpu_id = kbdev->gpu_props.props.raw_props.gpu_id; + + if (gpu_id == GPU_ID_MAKE(GPU_ID_PI_T62X, 0, 1, 0) && + kbdev->reg_start == 0x2d000000) { + /* T62X in SoC detected */ + u64 ret = kbase_invoke_smc(SMC_OEN_SIP, + JUNO_SMC_SECURE_DISABLE_FUNC, false, + 0, 0, 0); + return ret; + } + + return -EINVAL; /* Not supported */ +} + +struct kbase_secure_ops juno_secure_ops = { + .secure_mode_enable = juno_secure_mode_enable, + .secure_mode_disable = juno_secure_mode_disable, +}; + +static struct kbase_platform_config versatile_platform_config = { +#ifndef CONFIG_OF + .io_resources = &io_resources +#endif +}; + +struct kbase_platform_config *kbase_get_platform_config(void) +{ + return &versatile_platform_config; +} + +int kbase_platform_early_init(void) +{ + /* Nothing needed at this stage */ + return 0; +} |