lkml.org 
[lkml]   [2020]   [Jan]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC PATCH 3/4] drm/i915/gvt: define a public interface to gvt
Date
So far, the KVMGT code just included the whole i915 driver and GVT
internals to do its job. Change this to have a single public header
that defines the interface via accessor functions.

Some ugly things:

a) The handle member of intel_vgpu should be in kvmgt_vdev and the
generic code should just pass the vgpu pointer around.

b) The "public" API is rather ugly, because I tried to limit the
changes I do to KVMGT and have a mechanical 1:1 conversion. Future
patches will need to simplify this to something sane.

v2:
- Remove edid and display constants from public API

Cc: Zhenyu Wang <zhenyuw@linux.intel.com>

Signed-off-by: Julian Stecklina <julian.stecklina@cyberus-technology.de>
---
drivers/gpu/drm/i915/gvt/Makefile | 2 +-
drivers/gpu/drm/i915/gvt/debug.h | 2 +-
drivers/gpu/drm/i915/gvt/display.c | 26 +++++
drivers/gpu/drm/i915/gvt/display.h | 27 -----
drivers/gpu/drm/i915/gvt/gtt.h | 2 -
drivers/gpu/drm/i915/gvt/gvt.h | 40 +------
drivers/gpu/drm/i915/gvt/gvt_public.c | 154 ++++++++++++++++++++++++++
drivers/gpu/drm/i915/gvt/gvt_public.h | 104 +++++++++++++++++
drivers/gpu/drm/i915/gvt/hypercall.h | 3 +
drivers/gpu/drm/i915/gvt/kvmgt.c | 130 +++++++++++-----------
drivers/gpu/drm/i915/gvt/mpt.h | 3 -
drivers/gpu/drm/i915/gvt/reg.h | 2 -
12 files changed, 354 insertions(+), 141 deletions(-)
create mode 100644 drivers/gpu/drm/i915/gvt/gvt_public.c
create mode 100644 drivers/gpu/drm/i915/gvt/gvt_public.h

diff --git a/drivers/gpu/drm/i915/gvt/Makefile b/drivers/gpu/drm/i915/gvt/Makefile
index ea8324abc784..183827c4f917 100644
--- a/drivers/gpu/drm/i915/gvt/Makefile
+++ b/drivers/gpu/drm/i915/gvt/Makefile
@@ -3,7 +3,7 @@ GVT_DIR := gvt
GVT_SOURCE := gvt.o aperture_gm.o handlers.o vgpu.o trace_points.o firmware.o \
interrupt.o gtt.o cfg_space.o opregion.o mmio.o display.o edid.o \
execlist.o scheduler.o sched_policy.o mmio_context.o cmd_parser.o debugfs.o \
- fb_decoder.o dmabuf.o page_track.o
+ fb_decoder.o dmabuf.o page_track.o gvt_public.o

ccflags-y += -I $(srctree)/$(src) -I $(srctree)/$(src)/$(GVT_DIR)/
i915-y += $(addprefix $(GVT_DIR)/, $(GVT_SOURCE))
diff --git a/drivers/gpu/drm/i915/gvt/debug.h b/drivers/gpu/drm/i915/gvt/debug.h
index c6027125c1ec..8270f34cfa43 100644
--- a/drivers/gpu/drm/i915/gvt/debug.h
+++ b/drivers/gpu/drm/i915/gvt/debug.h
@@ -32,7 +32,7 @@ do { \
if (IS_ERR_OR_NULL(vgpu)) \
pr_err("gvt: "fmt, ##args); \
else \
- pr_err("gvt: vgpu %d: "fmt, vgpu->id, ##args);\
+ pr_err("gvt: vgpu %d: "fmt, intel_vgpu_id(vgpu), ##args); \
} while (0)

#define gvt_dbg_core(fmt, args...) \
diff --git a/drivers/gpu/drm/i915/gvt/display.c b/drivers/gpu/drm/i915/gvt/display.c
index e1c313da6c00..08636fa15c46 100644
--- a/drivers/gpu/drm/i915/gvt/display.c
+++ b/drivers/gpu/drm/i915/gvt/display.c
@@ -529,3 +529,29 @@ void intel_vgpu_reset_display(struct intel_vgpu *vgpu)
{
emulate_monitor_status_change(vgpu);
}
+
+unsigned int vgpu_edid_xres(struct intel_vgpu_port *port)
+{
+ switch (port->id) {
+ case GVT_EDID_1024_768:
+ return 1024;
+ case GVT_EDID_1920_1200:
+ return 1920;
+ default:
+ return 0;
+ }
+}
+EXPORT_SYMBOL_GPL(vgpu_edid_xres);
+
+unsigned int vgpu_edid_yres(struct intel_vgpu_port *port)
+{
+ switch (port->id) {
+ case GVT_EDID_1024_768:
+ return 768;
+ case GVT_EDID_1920_1200:
+ return 1200;
+ default:
+ return 0;
+ }
+}
+EXPORT_SYMBOL_GPL(vgpu_edid_yres);
diff --git a/drivers/gpu/drm/i915/gvt/display.h b/drivers/gpu/drm/i915/gvt/display.h
index b59b34046e1e..6cdfc28b1070 100644
--- a/drivers/gpu/drm/i915/gvt/display.h
+++ b/drivers/gpu/drm/i915/gvt/display.h
@@ -43,9 +43,6 @@ struct intel_vgpu;
#define SBI_REG_MAX 20
#define DPCD_SIZE 0x700

-#define intel_vgpu_port(vgpu, port) \
- (&(vgpu->display.ports[port]))
-
#define intel_vgpu_has_monitor_on_port(vgpu, port) \
(intel_vgpu_port(vgpu, port)->edid && \
intel_vgpu_port(vgpu, port)->edid->data_valid)
@@ -178,30 +175,6 @@ static inline char *vgpu_edid_str(enum intel_vgpu_edid id)
}
}

-static inline unsigned int vgpu_edid_xres(enum intel_vgpu_edid id)
-{
- switch (id) {
- case GVT_EDID_1024_768:
- return 1024;
- case GVT_EDID_1920_1200:
- return 1920;
- default:
- return 0;
- }
-}
-
-static inline unsigned int vgpu_edid_yres(enum intel_vgpu_edid id)
-{
- switch (id) {
- case GVT_EDID_1024_768:
- return 768;
- case GVT_EDID_1920_1200:
- return 1200;
- default:
- return 0;
- }
-}
-
void intel_gvt_emulate_vblank(struct intel_gvt *gvt);
void intel_gvt_check_vblank_emulation(struct intel_gvt *gvt);

diff --git a/drivers/gpu/drm/i915/gvt/gtt.h b/drivers/gpu/drm/i915/gvt/gtt.h
index 88789316807d..2618affcd5d9 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.h
+++ b/drivers/gpu/drm/i915/gvt/gtt.h
@@ -38,8 +38,6 @@

struct intel_vgpu_mm;

-#define INTEL_GVT_INVALID_ADDR (~0UL)
-
struct intel_gvt_gtt_entry {
u64 val64;
int type;
diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h
index 8cf292a8d6bd..f9693c44e342 100644
--- a/drivers/gpu/drm/i915/gvt/gvt.h
+++ b/drivers/gpu/drm/i915/gvt/gvt.h
@@ -33,6 +33,7 @@
#ifndef _GVT_H_
#define _GVT_H_

+#include "gvt_public.h"
#include "debug.h"
#include "hypercall.h"
#include "mmio.h"
@@ -206,11 +207,6 @@ struct intel_vgpu {
u32 scan_nonprivbb;
};

-static inline void *intel_vgpu_vdev(struct intel_vgpu *vgpu)
-{
- return vgpu->vdev;
-}
-
/* validating GM healthy status*/
#define vgpu_is_vm_unhealthy(ret_val) \
(((ret_val) == -EBADRQC) || ((ret_val) == -EFAULT))
@@ -515,13 +511,6 @@ int intel_vgpu_emulate_cfg_write(struct intel_vgpu *vgpu, unsigned int offset,

void intel_vgpu_emulate_hotplug(struct intel_vgpu *vgpu, bool connected);

-static inline u64 intel_vgpu_get_bar_gpa(struct intel_vgpu *vgpu, int bar)
-{
- /* We are 64bit bar. */
- return (*(u64 *)(vgpu->cfg_space.virtual_cfg_space + bar)) &
- PCI_BASE_ADDRESS_MEM_MASK;
-}
-
void intel_vgpu_clean_opregion(struct intel_vgpu *vgpu);
int intel_vgpu_init_opregion(struct intel_vgpu *vgpu);
int intel_vgpu_opregion_base_write_handler(struct intel_vgpu *vgpu, u32 gpa);
@@ -532,33 +521,6 @@ void populate_pvinfo_page(struct intel_vgpu *vgpu);
int intel_gvt_scan_and_shadow_workload(struct intel_vgpu_workload *workload);
void enter_failsafe_mode(struct intel_vgpu *vgpu, int reason);

-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 *vgpu);
- void (*vgpu_release)(struct intel_vgpu *vgpu);
- void (*vgpu_reset)(struct intel_vgpu *);
- void (*vgpu_activate)(struct intel_vgpu *);
- void (*vgpu_deactivate)(struct intel_vgpu *);
- struct intel_vgpu_type *(*gvt_find_vgpu_type)(struct intel_gvt *gvt,
- const char *name);
- bool (*get_gvt_attrs)(struct attribute_group ***intel_vgpu_type_groups);
- int (*vgpu_query_plane)(struct intel_vgpu *vgpu, void *);
- int (*vgpu_get_dmabuf)(struct intel_vgpu *vgpu, unsigned int);
- int (*write_protect_handler)(struct intel_vgpu *, u64, void *,
- unsigned int);
- void (*emulate_hotplug)(struct intel_vgpu *vgpu, bool connected);
-};
-
-
enum {
GVT_FAILSAFE_UNSUPPORTED_GUEST,
GVT_FAILSAFE_INSUFFICIENT_RESOURCE,
diff --git a/drivers/gpu/drm/i915/gvt/gvt_public.c b/drivers/gpu/drm/i915/gvt/gvt_public.c
new file mode 100644
index 000000000000..b3f814ec125a
--- /dev/null
+++ b/drivers/gpu/drm/i915/gvt/gvt_public.c
@@ -0,0 +1,154 @@
+#include "i915_drv.h"
+#include "gvt.h"
+
+struct intel_gvt *intel_gvt_from_kdev(struct device *kobj)
+{
+ return kdev_to_i915(kobj)->gvt;
+}
+EXPORT_SYMBOL_GPL(intel_gvt_from_kdev);
+
+void *intel_vgpu_vdev(struct intel_vgpu *vgpu)
+{
+ return vgpu->vdev;
+}
+EXPORT_SYMBOL_GPL(intel_vgpu_vdev);
+
+void intel_vgpu_set_vdev(struct intel_vgpu *vgpu, void *vdev)
+{
+ vgpu->vdev = vdev;
+}
+EXPORT_SYMBOL_GPL(intel_vgpu_set_vdev);
+
+int intel_vgpu_id(struct intel_vgpu *vgpu)
+{
+ return vgpu->id;
+}
+EXPORT_SYMBOL_GPL(intel_vgpu_id);
+
+bool intel_vgpu_active_find(struct intel_vgpu *vgpu, bool (*pred)(struct intel_vgpu *, void *), void *ctx)
+{
+ struct intel_vgpu *itr;
+ int id;
+ bool ret = false;
+
+ mutex_lock(&vgpu->gvt->lock);
+ for_each_active_vgpu(vgpu->gvt, itr, id) {
+ if (pred(itr, ctx)) {
+ ret = true;
+ goto out;
+ }
+ }
+ out:
+ mutex_unlock(&vgpu->gvt->lock);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(intel_vgpu_active_find);
+
+struct device *intel_vgpu_pdev(struct intel_vgpu *vgpu)
+{
+ return &vgpu->gvt->dev_priv->drm.pdev->dev;
+}
+EXPORT_SYMBOL_GPL(intel_vgpu_pdev);
+
+void *intel_vgpu_opregion_va(struct intel_vgpu *vgpu)
+{
+ return vgpu_opregion(vgpu)->va;
+}
+EXPORT_SYMBOL_GPL(intel_vgpu_opregion_va);
+
+struct intel_vgpu_port *intel_vgpu_port(struct intel_vgpu *vgpu, size_t port)
+{
+ return &(vgpu->display.ports[port]);
+}
+EXPORT_SYMBOL_GPL(intel_vgpu_port);
+
+void *intel_vgpu_edid_block(struct intel_vgpu_port *port, size_t *edid_size)
+{
+ *edid_size = EDID_SIZE;
+
+ return port->edid->edid_block;
+}
+EXPORT_SYMBOL_GPL(intel_vgpu_edid_block);
+
+void intel_vgpu_set_handle(struct intel_vgpu *vgpu, unsigned long handle)
+{
+ vgpu->handle = handle;
+}
+EXPORT_SYMBOL_GPL(intel_vgpu_set_handle);
+
+unsigned long intel_vgpu_handle(struct intel_vgpu *vgpu)
+{
+ return vgpu->handle;
+}
+EXPORT_SYMBOL_GPL(intel_vgpu_handle);
+
+u32 *intel_vgpu_bar_ptr(struct intel_vgpu *vgpu, int bar)
+{
+ return (u32 *)(vgpu->cfg_space.virtual_cfg_space + bar);
+}
+EXPORT_SYMBOL_GPL(intel_vgpu_bar_ptr);
+
+u64 intel_vgpu_get_bar_gpa(struct intel_vgpu *vgpu, int bar)
+{
+ /* We are 64bit bar. */
+ return (*(u64 *)(vgpu->cfg_space.virtual_cfg_space + bar)) &
+ PCI_BASE_ADDRESS_MEM_MASK;
+}
+EXPORT_SYMBOL_GPL(intel_vgpu_get_bar_gpa);
+
+u64 intel_vgpu_get_bar_size(struct intel_vgpu *vgpu, int bar)
+{
+ return vgpu->cfg_space.bar[bar].size;
+}
+EXPORT_SYMBOL_GPL(intel_vgpu_get_bar_size);
+
+u64 intel_gvt_cfg_space_size(struct intel_vgpu *vgpu)
+{
+ return vgpu->gvt->device_info.cfg_space_size;
+}
+EXPORT_SYMBOL_GPL(intel_gvt_cfg_space_size);
+
+u64 intel_gvt_aperture_pa_base(struct intel_vgpu *vgpu)
+{
+ return gvt_aperture_pa_base(vgpu->gvt);
+}
+EXPORT_SYMBOL_GPL(intel_gvt_aperture_pa_base);
+
+u64 intel_vgpu_aperture_offset(struct intel_vgpu *vgpu)
+{
+ return vgpu_aperture_offset(vgpu);
+}
+EXPORT_SYMBOL_GPL(intel_vgpu_aperture_offset);
+
+u64 intel_vgpu_aperture_size(struct intel_vgpu *vgpu)
+{
+ return vgpu_aperture_sz(vgpu);
+}
+EXPORT_SYMBOL_GPL(intel_vgpu_aperture_size);
+
+u64 intel_gvt_aperture_size(struct intel_vgpu *vgpu)
+{
+ return gvt_aperture_sz(vgpu->gvt);
+}
+EXPORT_SYMBOL_GPL(intel_gvt_aperture_size);
+
+struct io_mapping *intel_gvt_gtt_iomap(struct intel_vgpu *vgpu)
+{
+ return &vgpu->gvt->dev_priv->ggtt.iomap;
+}
+EXPORT_SYMBOL_GPL(intel_gvt_gtt_iomap);
+
+bool intel_gvt_in_gtt(struct intel_vgpu *vgpu, u64 offset)
+{
+ struct intel_gvt *gvt = vgpu->gvt;
+
+ return (offset >= gvt->device_info.gtt_start_offset &&
+ offset < gvt->device_info.gtt_start_offset + gvt_ggtt_sz(gvt));
+}
+EXPORT_SYMBOL_GPL(intel_gvt_in_gtt);
+
+struct dentry *intel_vgpu_debugfs(struct intel_vgpu *vgpu)
+{
+ return vgpu->debugfs;
+}
+EXPORT_SYMBOL_GPL(intel_vgpu_debugfs);
diff --git a/drivers/gpu/drm/i915/gvt/gvt_public.h b/drivers/gpu/drm/i915/gvt/gvt_public.h
new file mode 100644
index 000000000000..23bf1235e1a1
--- /dev/null
+++ b/drivers/gpu/drm/i915/gvt/gvt_public.h
@@ -0,0 +1,104 @@
+/*
+ * 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_PUBLIC_H_
+#define _GVT_PUBLIC_H_
+
+#include "hypercall.h"
+
+struct attribute;
+struct attribute_group;
+
+struct intel_vgpu;
+struct intel_gvt;
+struct intel_vgpu_type;
+struct intel_vgpu_port;
+
+/* reg.h */
+#define INTEL_GVT_OPREGION_PAGES 2
+#define INTEL_GVT_OPREGION_SIZE (INTEL_GVT_OPREGION_PAGES * PAGE_SIZE)
+
+/* gtt.h */
+#define INTEL_GVT_INVALID_ADDR (~0UL)
+
+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 *vgpu);
+ void (*vgpu_release)(struct intel_vgpu *vgpu);
+ void (*vgpu_reset)(struct intel_vgpu *);
+ void (*vgpu_activate)(struct intel_vgpu *);
+ void (*vgpu_deactivate)(struct intel_vgpu *);
+ struct intel_vgpu_type *(*gvt_find_vgpu_type)(struct intel_gvt *gvt,
+ const char *name);
+ bool (*get_gvt_attrs)(struct attribute_group ***intel_vgpu_type_groups);
+ int (*vgpu_query_plane)(struct intel_vgpu *vgpu, void *);
+ int (*vgpu_get_dmabuf)(struct intel_vgpu *vgpu, unsigned int);
+ int (*write_protect_handler)(struct intel_vgpu *, u64, void *,
+ unsigned int);
+ void (*emulate_hotplug)(struct intel_vgpu *vgpu, bool connected);
+};
+
+bool intel_vgpu_active_find(struct intel_vgpu *vgpu, bool (*pred)(struct intel_vgpu *, void *), void *ctx);
+
+struct intel_gvt *intel_gvt_from_kdev(struct device *kobj);
+void *intel_vgpu_vdev(struct intel_vgpu *vgpu);
+void intel_vgpu_set_vdev(struct intel_vgpu *vgpu, void *vdev);
+int intel_vgpu_id(struct intel_vgpu *vgpu);
+
+struct device *intel_vgpu_pdev(struct intel_vgpu *vgpu);
+void *intel_vgpu_opregion_va(struct intel_vgpu *vgpu);
+struct intel_vgpu_port *intel_vgpu_port(struct intel_vgpu *vgpu, size_t port);
+
+unsigned int vgpu_edid_xres(struct intel_vgpu_port *port);
+unsigned int vgpu_edid_yres(struct intel_vgpu_port *port);
+void *intel_vgpu_edid_block(struct intel_vgpu_port *port, size_t *edid_size);
+
+void intel_vgpu_set_handle(struct intel_vgpu *vgpu, unsigned long handle);
+unsigned long intel_vgpu_handle(struct intel_vgpu *vgpu);
+
+u32 *intel_vgpu_bar_ptr(struct intel_vgpu *vgpu, int bar);
+u64 intel_vgpu_get_bar_gpa(struct intel_vgpu *vgpu, int bar);
+u64 intel_vgpu_get_bar_size(struct intel_vgpu *vgpu, int bar);
+
+u64 intel_gvt_cfg_space_size(struct intel_vgpu *vgpu);
+
+u64 intel_gvt_aperture_pa_base(struct intel_vgpu *vgpu);
+u64 intel_vgpu_aperture_offset(struct intel_vgpu *vgpu);
+u64 intel_vgpu_aperture_size(struct intel_vgpu *vgpu);
+u64 intel_gvt_aperture_size(struct intel_vgpu *vgpu);
+
+struct io_mapping *intel_gvt_gtt_iomap(struct intel_vgpu *vgpu);
+bool intel_gvt_in_gtt(struct intel_vgpu *vgpu, u64 off);
+
+struct dentry *intel_vgpu_debugfs(struct intel_vgpu *vgpu);
+
+#endif /* _GVT_PUBLIC_H_ */
diff --git a/drivers/gpu/drm/i915/gvt/hypercall.h b/drivers/gpu/drm/i915/gvt/hypercall.h
index b17c4a1599cd..7ed33e4919a3 100644
--- a/drivers/gpu/drm/i915/gvt/hypercall.h
+++ b/drivers/gpu/drm/i915/gvt/hypercall.h
@@ -81,4 +81,7 @@ struct intel_gvt_mpt {

extern struct intel_gvt_mpt xengt_mpt;

+int intel_gvt_register_hypervisor(struct intel_gvt_mpt *);
+void intel_gvt_unregister_hypervisor(void);
+
#endif /* _GVT_HYPERCALL_H_ */
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index 9a435bc1a2f0..f5157211d45f 100644
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -28,10 +28,15 @@
* Xiaoguang Chen <xiaoguang.chen@intel.com>
*/

+#include <drm/drm_edid.h>
#include <linux/init.h>
#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/hashtable.h>
+#include <linux/io-mapping.h>
#include <linux/mm.h>
#include <linux/mmu_context.h>
+#include <linux/pci.h>
#include <linux/sched/mm.h>
#include <linux/types.h>
#include <linux/list.h>
@@ -46,8 +51,8 @@

#include <linux/nospec.h>

-#include "i915_drv.h"
-#include "gvt.h"
+#include "debug.h"
+#include "gvt_public.h"

static const struct intel_gvt_ops *intel_gvt_ops;

@@ -217,7 +222,7 @@ static int gvt_pin_guest_page(struct intel_vgpu *vgpu, unsigned long gfn,
static int gvt_dma_map_page(struct intel_vgpu *vgpu, unsigned long gfn,
dma_addr_t *dma_addr, unsigned long size)
{
- struct device *dev = &vgpu->gvt->dev_priv->drm.pdev->dev;
+ struct device *dev = intel_vgpu_pdev(vgpu);
struct page *page = NULL;
int ret;

@@ -240,7 +245,7 @@ static int gvt_dma_map_page(struct intel_vgpu *vgpu, unsigned long gfn,
static void gvt_dma_unmap_page(struct intel_vgpu *vgpu, unsigned long gfn,
dma_addr_t dma_addr, unsigned long size)
{
- struct device *dev = &vgpu->gvt->dev_priv->drm.pdev->dev;
+ struct device *dev = intel_vgpu_pdev(vgpu);

dma_unmap_page(dev, dma_addr, size, PCI_DMA_BIDIRECTIONAL);
gvt_unpin_guest_page(vgpu, gfn, size);
@@ -627,7 +632,7 @@ static int kvmgt_set_opregion(void *p_vgpu)
* one later. This one is used to expose opregion to VFIO. And the
* other one created by VFIO later, is used by guest actually.
*/
- base = vgpu_opregion(vgpu)->va;
+ base = intel_vgpu_opregion_va(vgpu);
if (!base)
return -ENOMEM;

@@ -639,7 +644,7 @@ static int kvmgt_set_opregion(void *p_vgpu)
ret = intel_vgpu_register_reg(vgpu,
PCI_VENDOR_ID_INTEL | VFIO_REGION_TYPE_PCI_VENDOR_TYPE,
VFIO_REGION_SUBTYPE_INTEL_IGD_OPREGION,
- &intel_vgpu_regops_opregion, OPREGION_SIZE,
+ &intel_vgpu_regops_opregion, INTEL_GVT_OPREGION_SIZE,
VFIO_REGION_INFO_FLAG_READ, base);

return ret;
@@ -650,24 +655,26 @@ static int kvmgt_set_edid(void *p_vgpu, int port_num)
struct intel_vgpu *vgpu = (struct intel_vgpu *)p_vgpu;
struct intel_vgpu_port *port = intel_vgpu_port(vgpu, port_num);
struct vfio_edid_region *base;
+ size_t edid_size;
int ret;

base = kzalloc(sizeof(*base), GFP_KERNEL);
if (!base)
return -ENOMEM;

+ base->edid_blob = intel_vgpu_edid_block(port, &edid_size);
+
/* TODO: Add multi-port and EDID extension block support */
base->vfio_edid_regs.edid_offset = EDID_BLOB_OFFSET;
- base->vfio_edid_regs.edid_max_size = EDID_SIZE;
- base->vfio_edid_regs.edid_size = EDID_SIZE;
- base->vfio_edid_regs.max_xres = vgpu_edid_xres(port->id);
- base->vfio_edid_regs.max_yres = vgpu_edid_yres(port->id);
- base->edid_blob = port->edid->edid_block;
+ base->vfio_edid_regs.edid_max_size = edid_size;
+ base->vfio_edid_regs.edid_size = edid_size;
+ base->vfio_edid_regs.max_xres = vgpu_edid_xres(port);
+ base->vfio_edid_regs.max_yres = vgpu_edid_yres(port);

ret = intel_vgpu_register_reg(vgpu,
VFIO_REGION_TYPE_GFX,
VFIO_REGION_SUBTYPE_GFX_EDID,
- &intel_vgpu_regops_edid, EDID_SIZE,
+ &intel_vgpu_regops_edid, edid_size,
VFIO_REGION_INFO_FLAG_READ |
VFIO_REGION_INFO_FLAG_WRITE |
VFIO_REGION_INFO_FLAG_CAPS, base);
@@ -690,11 +697,11 @@ static int intel_vgpu_create(struct kobject *kobj, struct mdev_device *mdev)
struct intel_vgpu *vgpu = NULL;
struct intel_vgpu_type *type;
struct device *pdev;
- void *gvt;
+ struct intel_gvt *gvt;
int ret;

pdev = mdev_parent_dev(mdev);
- gvt = kdev_to_i915(pdev)->gvt;
+ gvt = intel_gvt_from_kdev(pdev);

type = intel_gvt_ops->gvt_find_vgpu_type(gvt, kobject_name(kobj));
if (!type) {
@@ -728,7 +735,7 @@ static int intel_vgpu_remove(struct mdev_device *mdev)
{
struct intel_vgpu *vgpu = mdev_get_drvdata(mdev);

- if (handle_valid(vgpu->handle))
+ if (handle_valid(intel_vgpu_handle(vgpu)))
return -EBUSY;

intel_gvt_ops->vgpu_destroy(vgpu);
@@ -857,7 +864,7 @@ static void __intel_vgpu_release(struct intel_vgpu *vgpu)
struct kvmgt_guest_info *info;
int ret;

- if (!handle_valid(vgpu->handle))
+ if (!handle_valid(intel_vgpu_handle(vgpu)))
return;

if (atomic_cmpxchg(&vdev->released, 0, 1))
@@ -876,13 +883,13 @@ static void __intel_vgpu_release(struct intel_vgpu *vgpu)
/* dereference module reference taken at open */
module_put(THIS_MODULE);

- info = (struct kvmgt_guest_info *)vgpu->handle;
+ info = (struct kvmgt_guest_info *)intel_vgpu_handle(vgpu);
kvmgt_guest_exit(info);

intel_vgpu_release_msi_eventfd_ctx(vgpu);

vdev->kvm = NULL;
- vgpu->handle = 0;
+ intel_vgpu_set_handle(vgpu, 0);
}

static void intel_vgpu_release(struct mdev_device *mdev)
@@ -902,18 +909,16 @@ static void intel_vgpu_release_work(struct work_struct *work)

static u64 intel_vgpu_get_bar_addr(struct intel_vgpu *vgpu, int bar)
{
+ u32 *barp = intel_vgpu_bar_ptr(vgpu, bar);
u32 start_lo, start_hi;
u32 mem_type;

- start_lo = (*(u32 *)(vgpu->cfg_space.virtual_cfg_space + bar)) &
- PCI_BASE_ADDRESS_MEM_MASK;
- mem_type = (*(u32 *)(vgpu->cfg_space.virtual_cfg_space + bar)) &
- PCI_BASE_ADDRESS_MEM_TYPE_MASK;
+ start_lo = barp[0] & PCI_BASE_ADDRESS_MEM_MASK;
+ mem_type = barp[0] & PCI_BASE_ADDRESS_MEM_TYPE_MASK;

switch (mem_type) {
case PCI_BASE_ADDRESS_MEM_TYPE_64:
- start_hi = (*(u32 *)(vgpu->cfg_space.virtual_cfg_space
- + bar + 4));
+ start_hi = barp[1];
break;
case PCI_BASE_ADDRESS_MEM_TYPE_32:
case PCI_BASE_ADDRESS_MEM_TYPE_1M:
@@ -944,8 +949,8 @@ static int intel_vgpu_bar_rw(struct intel_vgpu *vgpu, int bar, u64 off,

static inline bool intel_vgpu_in_aperture(struct intel_vgpu *vgpu, u64 off)
{
- return off >= vgpu_aperture_offset(vgpu) &&
- off < vgpu_aperture_offset(vgpu) + vgpu_aperture_sz(vgpu);
+ return off >= intel_vgpu_aperture_offset(vgpu) &&
+ off < intel_vgpu_aperture_offset(vgpu) + intel_vgpu_aperture_size(vgpu);
}

static int intel_vgpu_aperture_rw(struct intel_vgpu *vgpu, u64 off,
@@ -959,7 +964,7 @@ static int intel_vgpu_aperture_rw(struct intel_vgpu *vgpu, u64 off,
return -EINVAL;
}

- aperture_va = io_mapping_map_wc(&vgpu->gvt->dev_priv->ggtt.iomap,
+ aperture_va = io_mapping_map_wc(intel_gvt_gtt_iomap(vgpu),
ALIGN_DOWN(off, PAGE_SIZE),
count + offset_in_page(off));
if (!aperture_va)
@@ -1029,8 +1034,7 @@ static bool gtt_entry(struct mdev_device *mdev, loff_t *ppos)
{
struct intel_vgpu *vgpu = mdev_get_drvdata(mdev);
unsigned int index = VFIO_PCI_OFFSET_TO_INDEX(*ppos);
- struct intel_gvt *gvt = vgpu->gvt;
- int offset;
+ u64 offset;

/* Only allow MMIO GGTT entry access */
if (index != PCI_BASE_ADDRESS_0)
@@ -1039,9 +1043,7 @@ static bool gtt_entry(struct mdev_device *mdev, loff_t *ppos)
offset = (u64)(*ppos & VFIO_PCI_OFFSET_MASK) -
intel_vgpu_get_bar_gpa(vgpu, PCI_BASE_ADDRESS_0);

- return (offset >= gvt->device_info.gtt_start_offset &&
- offset < gvt->device_info.gtt_start_offset + gvt_ggtt_sz(gvt)) ?
- true : false;
+ return intel_gvt_in_gtt(vgpu, offset);
}

static ssize_t intel_vgpu_read(struct mdev_device *mdev, char __user *buf,
@@ -1219,10 +1221,10 @@ static int intel_vgpu_mmap(struct mdev_device *mdev, struct vm_area_struct *vma)
if (!intel_vgpu_in_aperture(vgpu, req_start))
return -EINVAL;
if (req_start + req_size >
- vgpu_aperture_offset(vgpu) + vgpu_aperture_sz(vgpu))
+ intel_vgpu_aperture_offset(vgpu) + intel_vgpu_aperture_size(vgpu))
return -EINVAL;

- pgoff = (gvt_aperture_pa_base(vgpu->gvt) >> PAGE_SHIFT) + pgoff;
+ pgoff = (intel_gvt_aperture_pa_base(vgpu) >> PAGE_SHIFT) + pgoff;

return remap_pfn_range(vma, virtaddr, pgoff, req_size, pg_prot);
}
@@ -1326,7 +1328,7 @@ static long intel_vgpu_ioctl(struct mdev_device *mdev, unsigned int cmd,
struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu);
unsigned long minsz;

- gvt_dbg_core("vgpu%d ioctl, cmd: %d\n", vgpu->id, cmd);
+ gvt_dbg_core("vgpu%d ioctl, cmd: %d\n", intel_vgpu_id(vgpu), cmd);

if (cmd == VFIO_DEVICE_GET_INFO) {
struct vfio_device_info info;
@@ -1368,13 +1370,13 @@ static long intel_vgpu_ioctl(struct mdev_device *mdev, unsigned int cmd,
switch (info.index) {
case VFIO_PCI_CONFIG_REGION_INDEX:
info.offset = VFIO_PCI_INDEX_TO_OFFSET(info.index);
- info.size = vgpu->gvt->device_info.cfg_space_size;
+ info.size = intel_gvt_cfg_space_size(vgpu);
info.flags = VFIO_REGION_INFO_FLAG_READ |
VFIO_REGION_INFO_FLAG_WRITE;
break;
case VFIO_PCI_BAR0_REGION_INDEX:
info.offset = VFIO_PCI_INDEX_TO_OFFSET(info.index);
- info.size = vgpu->cfg_space.bar[info.index].size;
+ info.size = intel_vgpu_get_bar_size(vgpu, info.index);
if (!info.size) {
info.flags = 0;
break;
@@ -1394,7 +1396,7 @@ static long intel_vgpu_ioctl(struct mdev_device *mdev, unsigned int cmd,
VFIO_REGION_INFO_FLAG_MMAP |
VFIO_REGION_INFO_FLAG_READ |
VFIO_REGION_INFO_FLAG_WRITE;
- info.size = gvt_aperture_sz(vgpu->gvt);
+ info.size = intel_gvt_aperture_size(vgpu);

sparse = kzalloc(struct_size(sparse, areas, nr_areas),
GFP_KERNEL);
@@ -1406,8 +1408,8 @@ static long intel_vgpu_ioctl(struct mdev_device *mdev, unsigned int cmd,
sparse->nr_areas = nr_areas;
cap_type_id = VFIO_REGION_INFO_CAP_SPARSE_MMAP;
sparse->areas[0].offset =
- PAGE_ALIGN(vgpu_aperture_offset(vgpu));
- sparse->areas[0].size = vgpu_aperture_sz(vgpu);
+ PAGE_ALIGN(intel_vgpu_aperture_offset(vgpu));
+ sparse->areas[0].size = intel_vgpu_aperture_size(vgpu);
break;

case VFIO_PCI_BAR3_REGION_INDEX ... VFIO_PCI_BAR5_REGION_INDEX:
@@ -1607,7 +1609,7 @@ vgpu_id_show(struct device *dev, struct device_attribute *attr,
if (mdev) {
struct intel_vgpu *vgpu = (struct intel_vgpu *)
mdev_get_drvdata(mdev);
- return sprintf(buf, "%d\n", vgpu->id);
+ return sprintf(buf, "%d\n", intel_vgpu_id(vgpu));
}
return sprintf(buf, "\n");
}
@@ -1761,27 +1763,21 @@ static void kvmgt_page_track_flush_slot(struct kvm *kvm,
spin_unlock(&kvm->mmu_lock);
}

-static bool __kvmgt_vgpu_exist(struct intel_vgpu *vgpu, struct kvm *kvm)
+static bool __kvmgt_has_this_kvm(struct intel_vgpu *vgpu, void *kvm)
{
- struct intel_vgpu *itr;
+ unsigned long handle = intel_vgpu_handle(vgpu);
struct kvmgt_guest_info *info;
- int id;
- bool ret = false;
-
- mutex_lock(&vgpu->gvt->lock);
- for_each_active_vgpu(vgpu->gvt, itr, id) {
- if (!handle_valid(itr->handle))
- continue;
-
- info = (struct kvmgt_guest_info *)itr->handle;
- if (kvm && kvm == info->kvm) {
- ret = true;
- goto out;
- }
- }
-out:
- mutex_unlock(&vgpu->gvt->lock);
- return ret;
+
+ if (!handle_valid(handle))
+ return false;
+
+ info = (struct kvmgt_guest_info *)handle;
+ return kvm && kvm == info->kvm;
+}
+
+static bool __kvmgt_vgpu_exist(struct intel_vgpu *vgpu, struct kvm *kvm)
+{
+ return intel_vgpu_active_find(vgpu, __kvmgt_has_this_kvm, kvm);
}

static int kvmgt_guest_init(struct mdev_device *mdev)
@@ -1792,7 +1788,7 @@ static int kvmgt_guest_init(struct mdev_device *mdev)
struct kvm *kvm;

vgpu = mdev_get_drvdata(mdev);
- if (handle_valid(vgpu->handle))
+ if (handle_valid(intel_vgpu_handle(vgpu)))
return -EEXIST;

vdev = kvmgt_vdev(vgpu);
@@ -1809,7 +1805,7 @@ static int kvmgt_guest_init(struct mdev_device *mdev)
if (!info)
return -ENOMEM;

- vgpu->handle = (unsigned long)info;
+ intel_vgpu_set_handle(vgpu, (unsigned long)info);
info->vgpu = vgpu;
info->kvm = kvm;
kvm_get_kvm(info->kvm);
@@ -1823,7 +1819,7 @@ static int kvmgt_guest_init(struct mdev_device *mdev)

info->debugfs_cache_entries = debugfs_create_ulong(
"kvmgt_nr_cache_entries",
- 0444, vgpu->debugfs,
+ 0444, intel_vgpu_debugfs(vgpu),
&vdev->nr_cache_entries);
return 0;
}
@@ -1844,13 +1840,15 @@ static bool kvmgt_guest_exit(struct kvmgt_guest_info *info)
static int kvmgt_attach_vgpu(void *p_vgpu, unsigned long *handle)
{
struct intel_vgpu *vgpu = (struct intel_vgpu *)p_vgpu;
+ struct kvmgt_vdev *vdev;

- vgpu->vdev = kzalloc(sizeof(struct kvmgt_vdev), GFP_KERNEL);
+ vdev = kzalloc(sizeof(struct kvmgt_vdev), GFP_KERNEL);

- if (!vgpu->vdev)
+ if (!vdev)
return -ENOMEM;

- kvmgt_vdev(vgpu)->vgpu = vgpu;
+ vdev->vgpu = vgpu;
+ intel_vgpu_set_vdev(vgpu, vdev);

return 0;
}
diff --git a/drivers/gpu/drm/i915/gvt/mpt.h b/drivers/gpu/drm/i915/gvt/mpt.h
index 9ad224df9c68..8b8184d6a1fb 100644
--- a/drivers/gpu/drm/i915/gvt/mpt.h
+++ b/drivers/gpu/drm/i915/gvt/mpt.h
@@ -392,7 +392,4 @@ static inline bool intel_gvt_hypervisor_is_valid_gfn(
return intel_gvt_host.mpt->is_valid_gfn(vgpu->handle, gfn);
}

-int intel_gvt_register_hypervisor(struct intel_gvt_mpt *);
-void intel_gvt_unregister_hypervisor(void);
-
#endif /* _GVT_MPT_H_ */
diff --git a/drivers/gpu/drm/i915/gvt/reg.h b/drivers/gpu/drm/i915/gvt/reg.h
index 5b66e14c5b7b..85f71d2fbcb7 100644
--- a/drivers/gpu/drm/i915/gvt/reg.h
+++ b/drivers/gpu/drm/i915/gvt/reg.h
@@ -49,8 +49,6 @@
#define INTEL_GVT_OPREGION_SCIC_SF_REQEUSTEDCALLBACKS 1
#define INTEL_GVT_OPREGION_PARM 0x204

-#define INTEL_GVT_OPREGION_PAGES 2
-#define INTEL_GVT_OPREGION_SIZE (INTEL_GVT_OPREGION_PAGES * PAGE_SIZE)
#define INTEL_GVT_OPREGION_VBT_OFFSET 0x400
#define INTEL_GVT_OPREGION_VBT_SIZE \
(INTEL_GVT_OPREGION_SIZE - INTEL_GVT_OPREGION_VBT_OFFSET)
--
2.24.1
\
 
 \ /
  Last update: 2020-01-09 18:15    [W:0.080 / U:11.388 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site