#include "debug.h"
#include "hypercall.h"
#include "mmio.h"
+#include "reg.h"
#define GVT_MAX_VGPU 8
u32 size;
};
+struct intel_vgpu_mmio {
+ void *vreg;
+ void *sreg;
+};
+
+#define INTEL_GVT_MAX_CFG_SPACE_SZ 256
+#define INTEL_GVT_MAX_BAR_NUM 4
+
+struct intel_vgpu_pci_bar {
+ u64 size;
+ bool tracked;
+};
+
+struct intel_vgpu_cfg_space {
+ unsigned char virtual_cfg_space[INTEL_GVT_MAX_CFG_SPACE_SZ];
+ struct intel_vgpu_pci_bar bar[INTEL_GVT_MAX_BAR_NUM];
+};
+
+#define vgpu_cfg_space(vgpu) ((vgpu)->cfg_space.virtual_cfg_space)
+
struct intel_vgpu {
struct intel_gvt *gvt;
int id;
unsigned long handle; /* vGPU handle used by hypervisor MPT modules */
+ bool active;
+ bool resetting;
struct intel_vgpu_fence fence;
struct intel_vgpu_gm gm;
+ struct intel_vgpu_cfg_space cfg_space;
+ struct intel_vgpu_mmio mmio;
};
struct intel_gvt_gm {
void intel_vgpu_write_fence(struct intel_vgpu *vgpu,
u32 fence, u64 value);
+/* Macros for easily accessing vGPU virtual/shadow register */
+#define vgpu_vreg(vgpu, reg) \
+ (*(u32 *)(vgpu->mmio.vreg + INTEL_GVT_MMIO_OFFSET(reg)))
+#define vgpu_vreg8(vgpu, reg) \
+ (*(u8 *)(vgpu->mmio.vreg + INTEL_GVT_MMIO_OFFSET(reg)))
+#define vgpu_vreg16(vgpu, reg) \
+ (*(u16 *)(vgpu->mmio.vreg + INTEL_GVT_MMIO_OFFSET(reg)))
+#define vgpu_vreg64(vgpu, reg) \
+ (*(u64 *)(vgpu->mmio.vreg + INTEL_GVT_MMIO_OFFSET(reg)))
+#define vgpu_sreg(vgpu, reg) \
+ (*(u32 *)(vgpu->mmio.sreg + INTEL_GVT_MMIO_OFFSET(reg)))
+#define vgpu_sreg8(vgpu, reg) \
+ (*(u8 *)(vgpu->mmio.sreg + INTEL_GVT_MMIO_OFFSET(reg)))
+#define vgpu_sreg16(vgpu, reg) \
+ (*(u16 *)(vgpu->mmio.sreg + INTEL_GVT_MMIO_OFFSET(reg)))
+#define vgpu_sreg64(vgpu, reg) \
+ (*(u64 *)(vgpu->mmio.sreg + INTEL_GVT_MMIO_OFFSET(reg)))
+
+#define for_each_active_vgpu(gvt, vgpu, id) \
+ idr_for_each_entry((&(gvt)->vgpu_idr), (vgpu), (id)) \
+ for_each_if(vgpu->active)
+
+static inline void intel_vgpu_write_pci_bar(struct intel_vgpu *vgpu,
+ u32 offset, u32 val, bool low)
+{
+ u32 *pval;
+
+ /* BAR offset should be 32 bits algiend */
+ offset = rounddown(offset, 4);
+ pval = (u32 *)(vgpu_cfg_space(vgpu) + offset);
+
+ if (low) {
+ /*
+ * only update bit 31 - bit 4,
+ * leave the bit 3 - bit 0 unchanged.
+ */
+ *pval = (val & GENMASK(31, 4)) | (*pval & GENMASK(3, 0));
+ }
+}
+
+struct intel_vgpu *intel_gvt_create_vgpu(struct intel_gvt *gvt,
+ struct intel_vgpu_creation_params *
+ param);
+
+void intel_gvt_destroy_vgpu(struct intel_vgpu *vgpu);
+
#include "mpt.h"
#endif
--- /dev/null
+/*
+ * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef _GVT_REG_H
+#define _GVT_REG_H
+
+#define INTEL_GVT_PCI_CLASS_VGA_OTHER 0x80
+
+#define INTEL_GVT_PCI_GMCH_CONTROL 0x50
+#define BDW_GMCH_GMS_SHIFT 8
+#define BDW_GMCH_GMS_MASK 0xff
+
+#endif
--- /dev/null
+/*
+ * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Authors:
+ * Eddie Dong <eddie.dong@intel.com>
+ * Kevin Tian <kevin.tian@intel.com>
+ *
+ * Contributors:
+ * Ping Gao <ping.a.gao@intel.com>
+ * Zhi Wang <zhi.a.wang@intel.com>
+ * Bing Niu <bing.niu@intel.com>
+ *
+ */
+
+#include "i915_drv.h"
+
+static void clean_vgpu_mmio(struct intel_vgpu *vgpu)
+{
+ vfree(vgpu->mmio.vreg);
+ vgpu->mmio.vreg = vgpu->mmio.sreg = NULL;
+}
+
+static int setup_vgpu_mmio(struct intel_vgpu *vgpu)
+{
+ struct intel_gvt *gvt = vgpu->gvt;
+ const struct intel_gvt_device_info *info = &gvt->device_info;
+
+ vgpu->mmio.vreg = vzalloc(info->mmio_size * 2);
+ if (!vgpu->mmio.vreg)
+ return -ENOMEM;
+
+ vgpu->mmio.sreg = vgpu->mmio.vreg + info->mmio_size;
+
+ memcpy(vgpu->mmio.vreg, gvt->firmware.mmio, info->mmio_size);
+ memcpy(vgpu->mmio.sreg, gvt->firmware.mmio, info->mmio_size);
+ return 0;
+}
+
+static void setup_vgpu_cfg_space(struct intel_vgpu *vgpu,
+ struct intel_vgpu_creation_params *param)
+{
+ struct intel_gvt *gvt = vgpu->gvt;
+ const struct intel_gvt_device_info *info = &gvt->device_info;
+ u16 *gmch_ctl;
+ int i;
+
+ memcpy(vgpu_cfg_space(vgpu), gvt->firmware.cfg_space,
+ info->cfg_space_size);
+
+ if (!param->primary) {
+ vgpu_cfg_space(vgpu)[PCI_CLASS_DEVICE] =
+ INTEL_GVT_PCI_CLASS_VGA_OTHER;
+ vgpu_cfg_space(vgpu)[PCI_CLASS_PROG] =
+ INTEL_GVT_PCI_CLASS_VGA_OTHER;
+ }
+
+ /* Show guest that there isn't any stolen memory.*/
+ gmch_ctl = (u16 *)(vgpu_cfg_space(vgpu) + INTEL_GVT_PCI_GMCH_CONTROL);
+ *gmch_ctl &= ~(BDW_GMCH_GMS_MASK << BDW_GMCH_GMS_SHIFT);
+
+ intel_vgpu_write_pci_bar(vgpu, PCI_BASE_ADDRESS_2,
+ gvt_aperture_pa_base(gvt), true);
+
+ vgpu_cfg_space(vgpu)[PCI_COMMAND] &= ~(PCI_COMMAND_IO
+ | PCI_COMMAND_MEMORY
+ | PCI_COMMAND_MASTER);
+ /*
+ * Clear the bar upper 32bit and let guest to assign the new value
+ */
+ memset(vgpu_cfg_space(vgpu) + PCI_BASE_ADDRESS_1, 0, 4);
+ memset(vgpu_cfg_space(vgpu) + PCI_BASE_ADDRESS_3, 0, 4);
+
+ for (i = 0; i < INTEL_GVT_MAX_BAR_NUM; i++) {
+ vgpu->cfg_space.bar[i].size = pci_resource_len(
+ gvt->dev_priv->drm.pdev, i * 2);
+ vgpu->cfg_space.bar[i].tracked = false;
+ }
+}
+
+static void populate_pvinfo_page(struct intel_vgpu *vgpu)
+{
+ /* setup the ballooning information */
+ vgpu_vreg64(vgpu, vgtif_reg(magic)) = VGT_MAGIC;
+ vgpu_vreg(vgpu, vgtif_reg(version_major)) = 1;
+ vgpu_vreg(vgpu, vgtif_reg(version_minor)) = 0;
+ vgpu_vreg(vgpu, vgtif_reg(display_ready)) = 0;
+ vgpu_vreg(vgpu, vgtif_reg(vgt_id)) = vgpu->id;
+ vgpu_vreg(vgpu, vgtif_reg(avail_rs.mappable_gmadr.base)) =
+ vgpu_aperture_gmadr_base(vgpu);
+ vgpu_vreg(vgpu, vgtif_reg(avail_rs.mappable_gmadr.size)) =
+ vgpu_aperture_sz(vgpu);
+ vgpu_vreg(vgpu, vgtif_reg(avail_rs.nonmappable_gmadr.base)) =
+ vgpu_hidden_gmadr_base(vgpu);
+ vgpu_vreg(vgpu, vgtif_reg(avail_rs.nonmappable_gmadr.size)) =
+ vgpu_hidden_sz(vgpu);
+
+ vgpu_vreg(vgpu, vgtif_reg(avail_rs.fence_num)) = vgpu_fence_sz(vgpu);
+
+ gvt_dbg_core("Populate PVINFO PAGE for vGPU %d\n", vgpu->id);
+ gvt_dbg_core("aperture base [GMADR] 0x%llx size 0x%llx\n",
+ vgpu_aperture_gmadr_base(vgpu), vgpu_aperture_sz(vgpu));
+ gvt_dbg_core("hidden base [GMADR] 0x%llx size=0x%llx\n",
+ vgpu_hidden_gmadr_base(vgpu), vgpu_hidden_sz(vgpu));
+ gvt_dbg_core("fence size %d\n", vgpu_fence_sz(vgpu));
+
+ WARN_ON(sizeof(struct vgt_if) != VGT_PVINFO_SIZE);
+}
+
+/**
+ * intel_gvt_destroy_vgpu - destroy a virtual GPU
+ * @vgpu: virtual GPU
+ *
+ * This function is called when user wants to destroy a virtual GPU.
+ *
+ */
+void intel_gvt_destroy_vgpu(struct intel_vgpu *vgpu)
+{
+ struct intel_gvt *gvt = vgpu->gvt;
+
+ mutex_lock(&gvt->lock);
+
+ vgpu->active = false;
+ idr_remove(&gvt->vgpu_idr, vgpu->id);
+
+ intel_gvt_hypervisor_detach_vgpu(vgpu);
+ intel_vgpu_free_resource(vgpu);
+ clean_vgpu_mmio(vgpu);
+ vfree(vgpu);
+
+ mutex_unlock(&gvt->lock);
+}
+
+/**
+ * intel_gvt_create_vgpu - create a virtual GPU
+ * @gvt: GVT device
+ * @param: vGPU creation parameters
+ *
+ * This function is called when user wants to create a virtual GPU.
+ *
+ * Returns:
+ * pointer to intel_vgpu, error pointer if failed.
+ */
+struct intel_vgpu *intel_gvt_create_vgpu(struct intel_gvt *gvt,
+ struct intel_vgpu_creation_params *param)
+{
+ struct intel_vgpu *vgpu;
+ int ret;
+
+ gvt_dbg_core("handle %llu low %llu MB high %llu MB fence %llu\n",
+ param->handle, param->low_gm_sz, param->high_gm_sz,
+ param->fence_sz);
+
+ vgpu = vzalloc(sizeof(*vgpu));
+ if (!vgpu)
+ return ERR_PTR(-ENOMEM);
+
+ mutex_lock(&gvt->lock);
+
+ ret = idr_alloc(&gvt->vgpu_idr, vgpu, 1, GVT_MAX_VGPU, GFP_KERNEL);
+ if (ret < 0)
+ goto out_free_vgpu;
+
+ vgpu->id = ret;
+ vgpu->handle = param->handle;
+ vgpu->gvt = gvt;
+
+ setup_vgpu_cfg_space(vgpu, param);
+
+ ret = setup_vgpu_mmio(vgpu);
+ if (ret)
+ goto out_free_vgpu;
+
+ ret = intel_vgpu_alloc_resource(vgpu, param);
+ if (ret)
+ goto out_clean_vgpu_mmio;
+
+ populate_pvinfo_page(vgpu);
+
+ ret = intel_gvt_hypervisor_attach_vgpu(vgpu);
+ if (ret)
+ goto out_clean_vgpu_resource;
+
+ vgpu->active = true;
+ mutex_unlock(&gvt->lock);
+
+ return vgpu;
+
+out_clean_vgpu_resource:
+ intel_vgpu_free_resource(vgpu);
+out_clean_vgpu_mmio:
+ clean_vgpu_mmio(vgpu);
+out_free_vgpu:
+ vfree(vgpu);
+ mutex_unlock(&gvt->lock);
+ return ERR_PTR(ret);
+}
git.samba.org / sfrench / cifs-2.6.git / commitdiff