There is a Vivante GC1000(V5037)in LS2K1000 and LS7A1000, the gpu in these chips is a PCI device. This patch provide PCI device driver support. __ AMDGPU LS7A1000 Bridge Chip |__________ +------+ +----------------------------------+ | *** | | DDR4 | | +---------------+ PCIe Bridge | |--____--_| +------+ | | PCIe Root Bus |--------------------++++++++--> || MC0 | +--+--------+---+ Gen 2.2 x 8 | PCIe x8 Slot || | | ______________________ | +----------+ HT 3.0 | || 0x7a06 | | | LS3A4000 |<-------->| +---++---+ +------+ +---------+ +------+ | CPU |<-------->| | GC1000 | | LSDC |<->| DDR3 MC |<->| VRAM | +----------+ | +--------+ +-+--+-+ +---------+ +------+ || | 0x7a15 | | | || MC1 +---------------|--|---------------+ +------+ | | | DDR4 | +---------+ DVO0 | | DVO1 +--------+ +------+ VGA <--| GM7123C |<------+ +------>| LT8618 |---> HDMI +---------+ +--------+
LS7A1000 is a bridge chip, this bridge chip typically use with LS3A4000 (4 core 1.8gHz, Mips64r5) and LS3A5000 (4 core loongarch 2.5Ghz). While LS2K1000 is a double core 1.0Ghz Mips64r2 SoC.
LS7A1000/LS2K1000 has a display controller integrated, named lsdc. After apply this patch, the etnaviv driver can be used on our mips platform.
Signed-off-by: Sui Jingfeng 15330273260@189.cn --- drivers/gpu/drm/etnaviv/Kconfig | 10 +++ drivers/gpu/drm/etnaviv/Makefile | 2 + drivers/gpu/drm/etnaviv/etnaviv_drv.c | 30 ++++++-- drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 65 ++++++++++++------ drivers/gpu/drm/etnaviv/etnaviv_gpu.h | 4 ++ drivers/gpu/drm/etnaviv/etnaviv_pci_drv.c | 83 +++++++++++++++++++++++ drivers/gpu/drm/etnaviv/etnaviv_pci_drv.h | 15 ++++ 7 files changed, 182 insertions(+), 27 deletions(-) create mode 100644 drivers/gpu/drm/etnaviv/etnaviv_pci_drv.c create mode 100644 drivers/gpu/drm/etnaviv/etnaviv_pci_drv.h
diff --git a/drivers/gpu/drm/etnaviv/Kconfig b/drivers/gpu/drm/etnaviv/Kconfig index faa7fc68b009..4b7f630bb990 100644 --- a/drivers/gpu/drm/etnaviv/Kconfig +++ b/drivers/gpu/drm/etnaviv/Kconfig @@ -15,6 +15,16 @@ config DRM_ETNAVIV help DRM driver for Vivante GPUs.
+config DRM_ETNAVIV_PCI_DRIVER + bool "Enable support for PCI GPU core In LS7A1000/LS2K1000" + depends on DRM_ETNAVIV + depends on PCI + depends on MACH_LOONGSON64 + default y + help + DRM PCI driver for Vivante GC1000 GPU in LS7A1000 bridge chip + and LS2K1000 SoC. If in doubt, say "n". + config DRM_ETNAVIV_THERMAL bool "enable ETNAVIV thermal throttling" depends on DRM_ETNAVIV diff --git a/drivers/gpu/drm/etnaviv/Makefile b/drivers/gpu/drm/etnaviv/Makefile index 46e5ffad69a6..6829e1ebf2db 100644 --- a/drivers/gpu/drm/etnaviv/Makefile +++ b/drivers/gpu/drm/etnaviv/Makefile @@ -16,4 +16,6 @@ etnaviv-y := \ etnaviv_perfmon.o \ etnaviv_sched.o
+etnaviv-$(CONFIG_DRM_ETNAVIV_PCI_DRIVER) += etnaviv_pci_drv.o + obj-$(CONFIG_DRM_ETNAVIV) += etnaviv.o diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c index 69d879e623b8..3f612e1a56ff 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c @@ -23,6 +23,10 @@ #include "etnaviv_mmu.h" #include "etnaviv_perfmon.h"
+#ifdef CONFIG_DRM_ETNAVIV_PCI_DRIVER +#include "etnaviv_pci_drv.h" +#endif + /* * DRM operations: */ @@ -606,11 +610,13 @@ static int etnaviv_pdev_probe(struct platform_device *pdev) compare_of, core_node); } } else { - char **names = dev->platform_data; + char **names = (char **)dev->platform_data; unsigned i;
- for (i = 0; names[i]; i++) + for (i = 0; names[i]; i++) { component_match_add(dev, &match, compare_str, names[i]); + dev_info(dev, "component match %s added\n", names[i]); + } }
/* @@ -625,9 +631,9 @@ static int etnaviv_pdev_probe(struct platform_device *pdev) * bit to make sure we are allocating the command buffers and * TLBs in the lower 4 GiB address space. */ - if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(40)) || - dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32))) { - dev_dbg(&pdev->dev, "No suitable DMA available\n"); + if (dma_set_mask(dev, DMA_BIT_MASK(40)) || + dma_set_coherent_mask(dev, DMA_BIT_MASK(32))) { + dev_dbg(dev, "No suitable DMA available\n"); return -ENODEV; }
@@ -637,7 +643,7 @@ static int etnaviv_pdev_probe(struct platform_device *pdev) * GPUs in the system share the same DMA constraints. */ if (first_node) - of_dma_configure(&pdev->dev, first_node, true); + of_dma_configure(dev, first_node, true);
return component_master_add_with_match(dev, &etnaviv_master_ops, match); } @@ -704,6 +710,12 @@ static int __init etnaviv_init(void) if (ret != 0) goto unregister_gpu_driver;
+#ifdef CONFIG_DRM_ETNAVIV_PCI_DRIVER + ret = pci_register_driver(&etnaviv_pci_driver); + if (ret != 0) + goto unregister_platform_driver; +#endif + /* * If the DT contains at least one available GPU device, instantiate * the DRM platform device. @@ -724,6 +736,9 @@ static int __init etnaviv_init(void) return 0;
unregister_platform_driver: +#ifdef CONFIG_DRM_ETNAVIV_PCI_DRIVER + pci_unregister_driver(&etnaviv_pci_driver); +#endif platform_driver_unregister(&etnaviv_platform_driver); unregister_gpu_driver: platform_driver_unregister(&etnaviv_gpu_driver); @@ -734,6 +749,9 @@ module_init(etnaviv_init); static void __exit etnaviv_exit(void) { platform_device_unregister(etnaviv_drm); +#ifdef CONFIG_DRM_ETNAVIV_PCI_DRIVER + pci_unregister_driver(&etnaviv_pci_driver); +#endif platform_driver_unregister(&etnaviv_platform_driver); platform_driver_unregister(&etnaviv_gpu_driver); } diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c index d607be474aeb..d8ea8c3eea19 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c @@ -1800,19 +1800,10 @@ static const struct of_device_id etnaviv_gpu_match[] = { }; MODULE_DEVICE_TABLE(of, etnaviv_gpu_match);
-static int etnaviv_gpu_platform_probe(struct platform_device *pdev) +static int etnaviv_gpu_platform_constructor(struct etnaviv_gpu *gpu, + struct device *dev) { - struct device *dev = &pdev->dev; - struct etnaviv_gpu *gpu; - int err; - - gpu = devm_kzalloc(dev, sizeof(*gpu), GFP_KERNEL); - if (!gpu) - return -ENOMEM; - - gpu->dev = &pdev->dev; - mutex_init(&gpu->lock); - mutex_init(&gpu->fence_lock); + struct platform_device *pdev = to_platform_device(dev);
/* Map registers: */ gpu->mmio = devm_platform_ioremap_resource(pdev, 0); @@ -1824,7 +1815,28 @@ static int etnaviv_gpu_platform_probe(struct platform_device *pdev) if (gpu->irq < 0) return gpu->irq;
- err = devm_request_irq(&pdev->dev, gpu->irq, irq_handler, 0, + return 0; +} + +int etnaviv_gpu_probe(struct device *dev, + int (*pfn)(struct etnaviv_gpu *gpu, struct device *dev)) +{ + struct etnaviv_gpu *gpu; + int err; + + gpu = devm_kzalloc(dev, sizeof(*gpu), GFP_KERNEL); + if (!gpu) + return -ENOMEM; + + gpu->dev = dev; + mutex_init(&gpu->lock); + mutex_init(&gpu->fence_lock); + + err = pfn(gpu, dev); + if (err) + return err; + + err = devm_request_irq(dev, gpu->irq, irq_handler, 0, dev_name(gpu->dev), gpu); if (err) { dev_err(dev, "failed to request IRQ%u: %d\n", gpu->irq, err); @@ -1842,26 +1854,37 @@ static int etnaviv_gpu_platform_probe(struct platform_device *pdev) * autosuspend delay is rather arbitary: no measurements have * yet been performed to determine an appropriate value. */ - pm_runtime_use_autosuspend(gpu->dev); - pm_runtime_set_autosuspend_delay(gpu->dev, 200); - pm_runtime_enable(gpu->dev); + pm_runtime_use_autosuspend(dev); + pm_runtime_set_autosuspend_delay(dev, 200); + pm_runtime_enable(dev);
- err = component_add(&pdev->dev, &gpu_ops); + err = component_add(dev, &gpu_ops); if (err < 0) { - dev_err(&pdev->dev, "failed to register component: %d\n", err); + dev_err(dev, "failed to register component: %d\n", err); return err; }
return 0; }
-static int etnaviv_gpu_platform_remove(struct platform_device *pdev) +static int etnaviv_gpu_platform_probe(struct platform_device *pdev) { - component_del(&pdev->dev, &gpu_ops); - pm_runtime_disable(&pdev->dev); + return etnaviv_gpu_probe(&pdev->dev, etnaviv_gpu_platform_constructor); +} + +int etnaviv_gpu_remove(struct device *dev) +{ + component_del(dev, &gpu_ops); + pm_runtime_disable(dev); + return 0; }
+static int etnaviv_gpu_platform_remove(struct platform_device *pdev) +{ + return etnaviv_gpu_remove(&pdev->dev); +} + #ifdef CONFIG_PM static int etnaviv_gpu_rpm_suspend(struct device *dev) { diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h index 85eddd492774..4d0554cc1945 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h @@ -181,6 +181,10 @@ void etnaviv_gpu_pm_put(struct etnaviv_gpu *gpu); int etnaviv_gpu_wait_idle(struct etnaviv_gpu *gpu, unsigned int timeout_ms); void etnaviv_gpu_start_fe(struct etnaviv_gpu *gpu, u32 address, u16 prefetch);
+int etnaviv_gpu_probe(struct device *dev, + int (*pfn)(struct etnaviv_gpu *gpu, struct device *dev)); +int etnaviv_gpu_remove(struct device *dev); + extern struct platform_driver etnaviv_gpu_driver;
#endif /* __ETNAVIV_GPU_H__ */ diff --git a/drivers/gpu/drm/etnaviv/etnaviv_pci_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_pci_drv.c new file mode 100644 index 000000000000..8843edd0597b --- /dev/null +++ b/drivers/gpu/drm/etnaviv/etnaviv_pci_drv.c @@ -0,0 +1,83 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2015-2018 Etnaviv Project + */ + +#include <linux/pci.h> + +#include "etnaviv_drv.h" +#include "etnaviv_gpu.h" +#include "etnaviv_pci_drv.h" + +static const char *gpu_device_names[] = { + 0, + 0, /* MUST end with a NULL here */ +}; + +static int etnaviv_gpu_pci_constructor(struct etnaviv_gpu *gpu, + struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + + /* gpu bar 0 contain registers */ + gpu->mmio = devm_ioremap_resource(dev, &pdev->resource[0]); + if (IS_ERR(gpu->mmio)) + return PTR_ERR(gpu->mmio); + + gpu->irq = pdev->irq; + + dev_info(&pdev->dev, "%s:irq=%d\n", __func__, gpu->irq); + + return 0; +} + +static int etnaviv_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + struct device * const dev = &pdev->dev; + int ret; + + ret = pcim_enable_device(pdev); + if (ret) { + dev_err(dev, "failed to enable this PCI device\n"); + return ret; + } + + pci_set_master(pdev); + + ret = etnaviv_gpu_probe(dev, etnaviv_gpu_pci_constructor); + if (ret) { + dev_err(dev, "failed to create GPU instance\n"); + return ret; + } + + /* It's 0000:00:06.0 for GC1000 in LS7A1000 */ + dev_dbg(dev, "name = %s\n", dev_name(dev)); + + /* It seems that we have only one gpu core */ + gpu_device_names[0] = dev_name(dev); + + /* Instantiate the DRM platform device */ + return etnaviv_create_platform_device("etnaviv", + gpu_device_names, + ARRAY_SIZE(gpu_device_names)); +} + +static void etnaviv_pci_remove(struct pci_dev *pdev) +{ + etnaviv_gpu_remove(&pdev->dev); +} + +static const struct pci_device_id etnaviv_pci_id_lists[] = { + {0x0014, 0x7a15, PCI_ANY_ID, PCI_ANY_ID, 0, 0, GC1000_IN_LS7A1000}, + {0x0014, 0x7a05, PCI_ANY_ID, PCI_ANY_ID, 0, 0, GC1000_IN_LS2K1000}, + {0, 0, 0, 0, 0, 0, 0} +}; + +struct pci_driver etnaviv_pci_driver = { + .name = "etnaviv", + .id_table = etnaviv_pci_id_lists, + .probe = etnaviv_pci_probe, + .remove = etnaviv_pci_remove, +}; + +MODULE_DEVICE_TABLE(pci, etnaviv_pci_id_lists); diff --git a/drivers/gpu/drm/etnaviv/etnaviv_pci_drv.h b/drivers/gpu/drm/etnaviv/etnaviv_pci_drv.h new file mode 100644 index 000000000000..5aa54340bff3 --- /dev/null +++ b/drivers/gpu/drm/etnaviv/etnaviv_pci_drv.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ETNAVIV_PCI_DRV_H__ +#define __ETNAVIV_PCI_DRV_H__ + +#include <linux/pci.h> + +enum vivante_pci_gpu_family { + GC1000_IN_LS7A1000 = 0, + GC1000_IN_LS2K1000 = 1, + CHIP_LAST, +}; + +extern struct pci_driver etnaviv_pci_driver; +#endif