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-rw-r--r--drivers/vfio/pci/vfio_pci_rdwr.c122
-rw-r--r--include/linux/vfio_pci_core.h21
-rw-r--r--samples/vfio-mdev/mbochs.c1
-rw-r--r--samples/vfio-mdev/mdpy-fb.c1
-rw-r--r--samples/vfio-mdev/mdpy.c1
-rw-r--r--samples/vfio-mdev/mtty.c2
6 files changed, 78 insertions, 70 deletions
diff --git a/drivers/vfio/pci/vfio_pci_rdwr.c b/drivers/vfio/pci/vfio_pci_rdwr.c
index 03b8f7ada1ac..66b72c289284 100644
--- a/drivers/vfio/pci/vfio_pci_rdwr.c
+++ b/drivers/vfio/pci/vfio_pci_rdwr.c
@@ -89,6 +89,47 @@ EXPORT_SYMBOL_GPL(vfio_pci_core_ioread##size);
VFIO_IOREAD(8)
VFIO_IOREAD(16)
VFIO_IOREAD(32)
+#ifdef ioread64
+VFIO_IOREAD(64)
+#endif
+
+#define VFIO_IORDWR(size) \
+static int vfio_pci_iordwr##size(struct vfio_pci_core_device *vdev,\
+ bool iswrite, bool test_mem, \
+ void __iomem *io, char __user *buf, \
+ loff_t off, size_t *filled) \
+{ \
+ u##size val; \
+ int ret; \
+ \
+ if (iswrite) { \
+ if (copy_from_user(&val, buf, sizeof(val))) \
+ return -EFAULT; \
+ \
+ ret = vfio_pci_core_iowrite##size(vdev, test_mem, \
+ val, io + off); \
+ if (ret) \
+ return ret; \
+ } else { \
+ ret = vfio_pci_core_ioread##size(vdev, test_mem, \
+ &val, io + off); \
+ if (ret) \
+ return ret; \
+ \
+ if (copy_to_user(buf, &val, sizeof(val))) \
+ return -EFAULT; \
+ } \
+ \
+ *filled = sizeof(val); \
+ return 0; \
+} \
+
+VFIO_IORDWR(8)
+VFIO_IORDWR(16)
+VFIO_IORDWR(32)
+#if defined(ioread64) && defined(iowrite64)
+VFIO_IORDWR(64)
+#endif
/*
* Read or write from an __iomem region (MMIO or I/O port) with an excluded
@@ -114,72 +155,33 @@ ssize_t vfio_pci_core_do_io_rw(struct vfio_pci_core_device *vdev, bool test_mem,
else
fillable = 0;
+#if defined(ioread64) && defined(iowrite64)
+ if (fillable >= 8 && !(off % 8)) {
+ ret = vfio_pci_iordwr64(vdev, iswrite, test_mem,
+ io, buf, off, &filled);
+ if (ret)
+ return ret;
+
+ } else
+#endif
if (fillable >= 4 && !(off % 4)) {
- u32 val;
-
- if (iswrite) {
- if (copy_from_user(&val, buf, 4))
- return -EFAULT;
-
- ret = vfio_pci_core_iowrite32(vdev, test_mem,
- val, io + off);
- if (ret)
- return ret;
- } else {
- ret = vfio_pci_core_ioread32(vdev, test_mem,
- &val, io + off);
- if (ret)
- return ret;
-
- if (copy_to_user(buf, &val, 4))
- return -EFAULT;
- }
+ ret = vfio_pci_iordwr32(vdev, iswrite, test_mem,
+ io, buf, off, &filled);
+ if (ret)
+ return ret;
- filled = 4;
} else if (fillable >= 2 && !(off % 2)) {
- u16 val;
-
- if (iswrite) {
- if (copy_from_user(&val, buf, 2))
- return -EFAULT;
-
- ret = vfio_pci_core_iowrite16(vdev, test_mem,
- val, io + off);
- if (ret)
- return ret;
- } else {
- ret = vfio_pci_core_ioread16(vdev, test_mem,
- &val, io + off);
- if (ret)
- return ret;
-
- if (copy_to_user(buf, &val, 2))
- return -EFAULT;
- }
+ ret = vfio_pci_iordwr16(vdev, iswrite, test_mem,
+ io, buf, off, &filled);
+ if (ret)
+ return ret;
- filled = 2;
} else if (fillable) {
- u8 val;
-
- if (iswrite) {
- if (copy_from_user(&val, buf, 1))
- return -EFAULT;
-
- ret = vfio_pci_core_iowrite8(vdev, test_mem,
- val, io + off);
- if (ret)
- return ret;
- } else {
- ret = vfio_pci_core_ioread8(vdev, test_mem,
- &val, io + off);
- if (ret)
- return ret;
-
- if (copy_to_user(buf, &val, 1))
- return -EFAULT;
- }
+ ret = vfio_pci_iordwr8(vdev, iswrite, test_mem,
+ io, buf, off, &filled);
+ if (ret)
+ return ret;
- filled = 1;
} else {
/* Fill reads with -1, drop writes */
filled = min(count, (size_t)(x_end - off));
diff --git a/include/linux/vfio_pci_core.h b/include/linux/vfio_pci_core.h
index f87067438ed4..fbb472dd99b3 100644
--- a/include/linux/vfio_pci_core.h
+++ b/include/linux/vfio_pci_core.h
@@ -137,23 +137,26 @@ bool vfio_pci_core_range_intersect_range(loff_t buf_start, size_t buf_cnt,
loff_t *buf_offset,
size_t *intersect_count,
size_t *register_offset);
-#define VFIO_IOWRITE_DECLATION(size) \
+#define VFIO_IOWRITE_DECLARATION(size) \
int vfio_pci_core_iowrite##size(struct vfio_pci_core_device *vdev, \
bool test_mem, u##size val, void __iomem *io);
-VFIO_IOWRITE_DECLATION(8)
-VFIO_IOWRITE_DECLATION(16)
-VFIO_IOWRITE_DECLATION(32)
+VFIO_IOWRITE_DECLARATION(8)
+VFIO_IOWRITE_DECLARATION(16)
+VFIO_IOWRITE_DECLARATION(32)
#ifdef iowrite64
-VFIO_IOWRITE_DECLATION(64)
+VFIO_IOWRITE_DECLARATION(64)
#endif
-#define VFIO_IOREAD_DECLATION(size) \
+#define VFIO_IOREAD_DECLARATION(size) \
int vfio_pci_core_ioread##size(struct vfio_pci_core_device *vdev, \
bool test_mem, u##size *val, void __iomem *io);
-VFIO_IOREAD_DECLATION(8)
-VFIO_IOREAD_DECLATION(16)
-VFIO_IOREAD_DECLATION(32)
+VFIO_IOREAD_DECLARATION(8)
+VFIO_IOREAD_DECLARATION(16)
+VFIO_IOREAD_DECLARATION(32)
+#ifdef ioread64
+VFIO_IOREAD_DECLARATION(64)
+#endif
#endif /* VFIO_PCI_CORE_H */
diff --git a/samples/vfio-mdev/mbochs.c b/samples/vfio-mdev/mbochs.c
index 9062598ea03d..836456837997 100644
--- a/samples/vfio-mdev/mbochs.c
+++ b/samples/vfio-mdev/mbochs.c
@@ -88,6 +88,7 @@
#define STORE_LE32(addr, val) (*(u32 *)addr = val)
+MODULE_DESCRIPTION("Mediated virtual PCI display host device driver");
MODULE_LICENSE("GPL v2");
static int max_mbytes = 256;
diff --git a/samples/vfio-mdev/mdpy-fb.c b/samples/vfio-mdev/mdpy-fb.c
index 4598bc28acd9..149af7f598f8 100644
--- a/samples/vfio-mdev/mdpy-fb.c
+++ b/samples/vfio-mdev/mdpy-fb.c
@@ -229,4 +229,5 @@ static int __init mdpy_fb_init(void)
module_init(mdpy_fb_init);
MODULE_DEVICE_TABLE(pci, mdpy_fb_pci_table);
+MODULE_DESCRIPTION("Framebuffer driver for mdpy (mediated virtual pci display device)");
MODULE_LICENSE("GPL v2");
diff --git a/samples/vfio-mdev/mdpy.c b/samples/vfio-mdev/mdpy.c
index 27795501de6e..8104831ae125 100644
--- a/samples/vfio-mdev/mdpy.c
+++ b/samples/vfio-mdev/mdpy.c
@@ -40,6 +40,7 @@
#define STORE_LE32(addr, val) (*(u32 *)addr = val)
+MODULE_DESCRIPTION("Mediated virtual PCI display host device driver");
MODULE_LICENSE("GPL v2");
#define MDPY_TYPE_1 "vga"
diff --git a/samples/vfio-mdev/mtty.c b/samples/vfio-mdev/mtty.c
index 2284b3751240..b382c696c877 100644
--- a/samples/vfio-mdev/mtty.c
+++ b/samples/vfio-mdev/mtty.c
@@ -2058,6 +2058,6 @@ module_init(mtty_dev_init)
module_exit(mtty_dev_exit)
MODULE_LICENSE("GPL v2");
-MODULE_INFO(supported, "Test driver that simulate serial port over PCI");
+MODULE_DESCRIPTION("Test driver that simulate serial port over PCI");
MODULE_VERSION(VERSION_STRING);
MODULE_AUTHOR(DRIVER_AUTHOR);
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-19 00:02:13 +0100