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host1x_emu: Adding API dispatch functionality

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Adding dynamic APi dispatch functionality in host1x-fence
modue. This CL exports new host1x wrapper API, which can
be called by client kernel modules. The wrapper API dispatch
call to either Host1x module or Host1x-EMU depending if the
host1x-emu driver registered its interface during its probe.

Bug 5064819

Change-Id: I49445cdce7c3795a2c94fde9d0871da393993554
Signed-off-by: amitabhd <amitabhd@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3306857
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Leslin Varghese <lvarghese@nvidia.com>
Reviewed-by: Raghavendra Vishnu Kumar <rvk@nvidia.com>
This commit is contained in:
amitabhd
2025-02-20 11:05:00 +00:00
committed by Jon Hunter
parent 1e83ec96df
commit 2cc3c99c6e
10 changed files with 764 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

65
drivers/gpu/host1x-emu/dev.c
View File

@@ -12,6 +12,15 @@
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#ifdef CONFIG_TEGRA_HOST1X_EMU_DBG_SYMBL
#include <linux/host1x-emu.h>
#include <linux/nvhost-emu.h>
#else
#include <linux/host1x-next.h>
#include <linux/nvhost.h>
#include <linux/nvhost_t194.h>
#endif
#if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)
#include <asm/dma-iommu.h>
#endif
@@ -21,6 +30,7 @@
#include "dev.h"
#include "debug.h"
#include "hw/host1xEMU.h"
#include <linux/host1x-dispatch_type.h>
#define HOST1X_POOL_MSEC_PERIOD 70 /*70msec*/
#define HOST1X_SYNCPT_POOL_BASE(x) (x*2+0)
@@ -32,6 +42,58 @@ static const struct host1x_info host1xEmu_info = {
.dma_mask = DMA_BIT_MASK(40),
};
struct host1x_interface_ops host1x_emu_api = {
.host1x_fence_create = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_fence_create),
.host1x_fence_extract = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_fence_extract),
.host1x_fence_cancel = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_fence_cancel),
.host1x_fence_get_node = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_fence_get_node),
.host1x_get_dma_mask = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_get_dma_mask),
.host1x_syncpt_get = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_syncpt_get),
.host1x_syncpt_get_by_id = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_syncpt_get_by_id),
.host1x_syncpt_get_by_id_noref = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_syncpt_get_by_id_noref),
.host1x_syncpt_read = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_syncpt_read),
.host1x_syncpt_read_min = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_syncpt_read_min),
.host1x_syncpt_read_max = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_syncpt_read_max),
.host1x_syncpt_incr = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_syncpt_incr),
.host1x_syncpt_incr_max = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_syncpt_incr_max),
.host1x_syncpt_alloc = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_syncpt_alloc),
.host1x_syncpt_put = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_syncpt_put),
.host1x_syncpt_id = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_syncpt_id),
.host1x_syncpt_wait_ts = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_syncpt_wait_ts),
.host1x_syncpt_wait = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_syncpt_wait),
//nvhost.h Interface
.host1x_writel = HOST1X_EMU_EXPORT_SYMBOL_NAME(host1x_writel),
.nvhost_get_default_device = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_get_default_device),
.nvhost_get_host1x = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_get_host1x),
.nvhost_client_device_get_resources = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_client_device_get_resources),
.nvhost_client_device_init = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_client_device_init),
.nvhost_client_device_release = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_client_device_release),
.nvhost_get_syncpt_host_managed = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_get_syncpt_host_managed),
.nvhost_get_syncpt_client_managed = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_get_syncpt_client_managed),
.nvhost_get_syncpt_gpu_managed = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_get_syncpt_gpu_managed),
.nvhost_syncpt_put_ref_ext = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_syncpt_put_ref_ext),
.nvhost_syncpt_is_valid_pt_ext = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_syncpt_is_valid_pt_ext),
.nvhost_syncpt_is_expired_ext = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_syncpt_is_expired_ext),
.nvhost_syncpt_set_min_update = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_syncpt_set_min_update),
.nvhost_syncpt_read_ext_check = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_syncpt_read_ext_check),
.nvhost_syncpt_read_maxval = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_syncpt_read_maxval),
.nvhost_syncpt_incr_max_ext = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_syncpt_incr_max_ext),
.nvhost_syncpt_unit_interface_get_byte_offset_ext = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_syncpt_unit_interface_get_byte_offset_ext),
.nvhost_syncpt_unit_interface_get_byte_offset = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_syncpt_unit_interface_get_byte_offset),
.nvhost_syncpt_unit_interface_get_aperture = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_syncpt_unit_interface_get_aperture),
.nvhost_syncpt_unit_interface_init = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_syncpt_unit_interface_init),
.nvhost_syncpt_unit_interface_deinit = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_syncpt_unit_interface_deinit),
.nvhost_syncpt_address = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_syncpt_address),
.nvhost_intr_register_notifier = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_intr_register_notifier),
.nvhost_module_init = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_module_init),
.nvhost_module_deinit = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_module_deinit),
.nvhost_module_reset = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_module_reset),
.nvhost_module_busy = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_module_busy),
.nvhost_module_idle = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_module_idle),
.nvhost_module_idle_mult = HOST1X_EMU_EXPORT_SYMBOL_NAME(nvhost_module_idle_mult),
};
static const struct of_device_id host1x_of_match[] = {
{ .compatible = "nvidia,tegraEmu-host1x", .data = &host1xEmu_info, },
{ },
@@ -309,6 +371,9 @@ static int host1x_probe(struct platform_device *pdev)
/* Start pool polling thread*/
host1x_poll_start(host);
/* Register Host1x-EMU Interface*/
host1x_wrapper_register_interface(&host1x_emu_api);
pr_info("Host1x-EMU: Probe Done\n");
return 0;