From 9ec1e66b8084f24d41046bd9711fbd7ec6e3850f Mon Sep 17 00:00:00 2001 From: Jike Song Date: Thu, 3 Nov 2016 18:38:35 +0800 Subject: [PATCH] drm/i915/gvt: refactor intel_gvt_io_emulation_ops to be intel_gvt_ops There are currently 4 methods in intel_gvt_io_emulation_ops to emulate CFG/MMIO reading/writing for intel vGPU. A possibly better scope is: add 3 more methods for vgpu create/destroy/reset respectively, and rename the ops to 'intel_gvt_ops', then pass it to the MPT module (say the future kvmgt) to use: they are all methods for external usage. Signed-off-by: Jike Song Signed-off-by: Zhenyu Wang --- drivers/gpu/drm/i915/gvt/cfg_space.c | 7 ++----- drivers/gpu/drm/i915/gvt/gvt.c | 7 +++++-- drivers/gpu/drm/i915/gvt/gvt.h | 21 +++++++++++++++++++-- drivers/gpu/drm/i915/gvt/hypercall.h | 9 --------- drivers/gpu/drm/i915/gvt/mmio.c | 6 ++---- drivers/gpu/drm/i915/gvt/mmio.h | 9 +++++---- drivers/gpu/drm/i915/gvt/vgpu.c | 11 +++++++++++ 7 files changed, 44 insertions(+), 26 deletions(-) diff --git a/drivers/gpu/drm/i915/gvt/cfg_space.c b/drivers/gpu/drm/i915/gvt/cfg_space.c index 865629a5c553..db516382a4d4 100644 --- a/drivers/gpu/drm/i915/gvt/cfg_space.c +++ b/drivers/gpu/drm/i915/gvt/cfg_space.c @@ -47,11 +47,9 @@ enum { * Returns: * Zero on success, negative error code if failed. */ -int intel_vgpu_emulate_cfg_read(void *__vgpu, unsigned int offset, +int intel_vgpu_emulate_cfg_read(struct intel_vgpu *vgpu, unsigned int offset, void *p_data, unsigned int bytes) { - struct intel_vgpu *vgpu = __vgpu; - if (WARN_ON(bytes > 4)) return -EINVAL; @@ -234,10 +232,9 @@ static int emulate_pci_bar_write(struct intel_vgpu *vgpu, unsigned int offset, * Returns: * Zero on success, negative error code if failed. */ -int intel_vgpu_emulate_cfg_write(void *__vgpu, unsigned int offset, +int intel_vgpu_emulate_cfg_write(struct intel_vgpu *vgpu, unsigned int offset, void *p_data, unsigned int bytes) { - struct intel_vgpu *vgpu = __vgpu; int ret; if (WARN_ON(bytes > 4)) diff --git a/drivers/gpu/drm/i915/gvt/gvt.c b/drivers/gpu/drm/i915/gvt/gvt.c index 13db29d045a4..7af265ac8d74 100644 --- a/drivers/gpu/drm/i915/gvt/gvt.c +++ b/drivers/gpu/drm/i915/gvt/gvt.c @@ -44,11 +44,14 @@ static const char * const supported_hypervisors[] = { [INTEL_GVT_HYPERVISOR_KVM] = "KVM", }; -struct intel_gvt_io_emulation_ops intel_gvt_io_emulation_ops = { +static const struct intel_gvt_ops intel_gvt_ops = { .emulate_cfg_read = intel_vgpu_emulate_cfg_read, .emulate_cfg_write = intel_vgpu_emulate_cfg_write, .emulate_mmio_read = intel_vgpu_emulate_mmio_read, .emulate_mmio_write = intel_vgpu_emulate_mmio_write, + .vgpu_create = intel_gvt_create_vgpu, + .vgpu_destroy = intel_gvt_destroy_vgpu, + .vgpu_reset = intel_gvt_reset_vgpu, }; /** @@ -278,7 +281,7 @@ int intel_gvt_init_device(struct drm_i915_private *dev_priv) goto out_clean_thread; ret = intel_gvt_hypervisor_host_init(&dev_priv->drm.pdev->dev, gvt, - &intel_gvt_io_emulation_ops); + &intel_gvt_ops); if (ret) { gvt_err("failed to register gvt-g host device: %d\n", ret); goto out_clean_types; diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h index 33e6a6447025..5e7b0bd01695 100644 --- a/drivers/gpu/drm/i915/gvt/gvt.h +++ b/drivers/gpu/drm/i915/gvt/gvt.h @@ -356,6 +356,7 @@ void intel_gvt_clean_vgpu_types(struct intel_gvt *gvt); struct intel_vgpu *intel_gvt_create_vgpu(struct intel_gvt *gvt, struct intel_vgpu_type *type); void intel_gvt_destroy_vgpu(struct intel_vgpu *vgpu); +void intel_gvt_reset_vgpu(struct intel_vgpu *vgpu); /* validating GM functions */ @@ -391,10 +392,10 @@ int intel_gvt_ggtt_index_g2h(struct intel_vgpu *vgpu, unsigned long g_index, int intel_gvt_ggtt_h2g_index(struct intel_vgpu *vgpu, unsigned long h_index, unsigned long *g_index); -int intel_vgpu_emulate_cfg_read(void *__vgpu, unsigned int offset, +int intel_vgpu_emulate_cfg_read(struct intel_vgpu *vgpu, unsigned int offset, void *p_data, unsigned int bytes); -int intel_vgpu_emulate_cfg_write(void *__vgpu, unsigned int offset, +int intel_vgpu_emulate_cfg_write(struct intel_vgpu *vgpu, unsigned int offset, void *p_data, unsigned int bytes); void intel_gvt_clean_opregion(struct intel_gvt *gvt); @@ -407,6 +408,22 @@ int intel_vgpu_emulate_opregion_request(struct intel_vgpu *vgpu, u32 swsci); int setup_vgpu_mmio(struct intel_vgpu *vgpu); void populate_pvinfo_page(struct intel_vgpu *vgpu); +struct intel_gvt_ops { + int (*emulate_cfg_read)(struct intel_vgpu *, unsigned int, void *, + unsigned int); + int (*emulate_cfg_write)(struct intel_vgpu *, unsigned int, void *, + unsigned int); + int (*emulate_mmio_read)(struct intel_vgpu *, u64, void *, + unsigned int); + int (*emulate_mmio_write)(struct intel_vgpu *, u64, void *, + unsigned int); + struct intel_vgpu *(*vgpu_create)(struct intel_gvt *, + struct intel_vgpu_type *); + void (*vgpu_destroy)(struct intel_vgpu *); + void (*vgpu_reset)(struct intel_vgpu *); +}; + + #include "mpt.h" #endif diff --git a/drivers/gpu/drm/i915/gvt/hypercall.h b/drivers/gpu/drm/i915/gvt/hypercall.h index f3e926340983..30e543f5a703 100644 --- a/drivers/gpu/drm/i915/gvt/hypercall.h +++ b/drivers/gpu/drm/i915/gvt/hypercall.h @@ -33,15 +33,6 @@ #ifndef _GVT_HYPERCALL_H_ #define _GVT_HYPERCALL_H_ -struct intel_gvt_io_emulation_ops { - int (*emulate_cfg_read)(void *, unsigned int, void *, unsigned int); - int (*emulate_cfg_write)(void *, unsigned int, void *, unsigned int); - int (*emulate_mmio_read)(void *, u64, void *, unsigned int); - int (*emulate_mmio_write)(void *, u64, void *, unsigned int); -}; - -extern struct intel_gvt_io_emulation_ops intel_gvt_io_emulation_ops; - /* * Specific GVT-g MPT modules function collections. Currently GVT-g supports * both Xen and KVM by providing dedicated hypervisor-related MPT modules. diff --git a/drivers/gpu/drm/i915/gvt/mmio.c b/drivers/gpu/drm/i915/gvt/mmio.c index 585b01f63254..09c9450a1946 100644 --- a/drivers/gpu/drm/i915/gvt/mmio.c +++ b/drivers/gpu/drm/i915/gvt/mmio.c @@ -67,10 +67,9 @@ int intel_vgpu_gpa_to_mmio_offset(struct intel_vgpu *vgpu, u64 gpa) * Returns: * Zero on success, negative error code if failed */ -int intel_vgpu_emulate_mmio_read(void *__vgpu, uint64_t pa, +int intel_vgpu_emulate_mmio_read(struct intel_vgpu *vgpu, uint64_t pa, void *p_data, unsigned int bytes) { - struct intel_vgpu *vgpu = __vgpu; struct intel_gvt *gvt = vgpu->gvt; struct intel_gvt_mmio_info *mmio; unsigned int offset = 0; @@ -179,10 +178,9 @@ err: * Returns: * Zero on success, negative error code if failed */ -int intel_vgpu_emulate_mmio_write(void *__vgpu, uint64_t pa, +int intel_vgpu_emulate_mmio_write(struct intel_vgpu *vgpu, uint64_t pa, void *p_data, unsigned int bytes) { - struct intel_vgpu *vgpu = __vgpu; struct intel_gvt *gvt = vgpu->gvt; struct intel_gvt_mmio_info *mmio; unsigned int offset = 0; diff --git a/drivers/gpu/drm/i915/gvt/mmio.h b/drivers/gpu/drm/i915/gvt/mmio.h index 9dc739a01892..87d5b5e366a3 100644 --- a/drivers/gpu/drm/i915/gvt/mmio.h +++ b/drivers/gpu/drm/i915/gvt/mmio.h @@ -87,10 +87,11 @@ struct intel_gvt_mmio_info *intel_gvt_find_mmio_info(struct intel_gvt *gvt, }) int intel_vgpu_gpa_to_mmio_offset(struct intel_vgpu *vgpu, u64 gpa); -int intel_vgpu_emulate_mmio_read(void *__vgpu, u64 pa, void *p_data, - unsigned int bytes); -int intel_vgpu_emulate_mmio_write(void *__vgpu, u64 pa, void *p_data, - unsigned int bytes); + +int intel_vgpu_emulate_mmio_read(struct intel_vgpu *vgpu, u64 pa, + void *p_data, unsigned int bytes); +int intel_vgpu_emulate_mmio_write(struct intel_vgpu *vgpu, u64 pa, + void *p_data, unsigned int bytes); bool intel_gvt_mmio_is_cmd_access(struct intel_gvt *gvt, unsigned int offset); bool intel_gvt_mmio_is_unalign(struct intel_gvt *gvt, unsigned int offset); diff --git a/drivers/gpu/drm/i915/gvt/vgpu.c b/drivers/gpu/drm/i915/gvt/vgpu.c index 9b09f697862c..3a15feadc1df 100644 --- a/drivers/gpu/drm/i915/gvt/vgpu.c +++ b/drivers/gpu/drm/i915/gvt/vgpu.c @@ -390,3 +390,14 @@ struct intel_vgpu *intel_gvt_create_vgpu(struct intel_gvt *gvt, return vgpu; } + +/** + * intel_gvt_reset_vgpu - reset a virtual GPU + * @vgpu: virtual GPU + * + * This function is called when user wants to reset a virtual GPU. + * + */ +void intel_gvt_reset_vgpu(struct intel_vgpu *vgpu) +{ +} -- 2.20.1