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-rw-r--r--tools/virtio/linux/bug.h10
-rw-r--r--tools/virtio/linux/build_bug.h7
-rw-r--r--tools/virtio/linux/compiler.h28
-rw-r--r--tools/virtio/linux/cpumask.h7
-rw-r--r--tools/virtio/linux/dma-mapping.h31
-rw-r--r--tools/virtio/linux/gfp.h7
-rw-r--r--tools/virtio/linux/kernel.h30
-rw-r--r--tools/virtio/linux/kmsan.h12
-rw-r--r--tools/virtio/linux/mm_types.h3
-rw-r--r--tools/virtio/linux/module.h7
-rw-r--r--tools/virtio/linux/scatterlist.h1
-rw-r--r--tools/virtio/linux/spinlock.h56
-rw-r--r--tools/virtio/linux/topology.h7
-rw-r--r--tools/virtio/linux/uaccess.h11
-rw-r--r--tools/virtio/linux/virtio.h10
-rw-r--r--tools/virtio/linux/virtio_config.h15
-rw-r--r--tools/virtio/linux/vringh.h1
17 files changed, 206 insertions, 37 deletions
diff --git a/tools/virtio/linux/bug.h b/tools/virtio/linux/bug.h
index b14c2c3b6b85..51a919083d9b 100644
--- a/tools/virtio/linux/bug.h
+++ b/tools/virtio/linux/bug.h
@@ -1,11 +1,11 @@
/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef BUG_H
-#define BUG_H
+#ifndef _LINUX_BUG_H
+#define _LINUX_BUG_H
-#define BUG_ON(__BUG_ON_cond) assert(!(__BUG_ON_cond))
+#include <asm/bug.h>
-#define BUILD_BUG_ON(x)
+#define BUG_ON(__BUG_ON_cond) assert(!(__BUG_ON_cond))
#define BUG() abort()
-#endif /* BUG_H */
+#endif /* _LINUX_BUG_H */
diff --git a/tools/virtio/linux/build_bug.h b/tools/virtio/linux/build_bug.h
new file mode 100644
index 000000000000..cdbb75e28a60
--- /dev/null
+++ b/tools/virtio/linux/build_bug.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_BUILD_BUG_H
+#define _LINUX_BUILD_BUG_H
+
+#define BUILD_BUG_ON(x)
+
+#endif /* _LINUX_BUILD_BUG_H */
diff --git a/tools/virtio/linux/compiler.h b/tools/virtio/linux/compiler.h
index 903dc9c4bd11..725b93bfeee1 100644
--- a/tools/virtio/linux/compiler.h
+++ b/tools/virtio/linux/compiler.h
@@ -2,9 +2,37 @@
#ifndef LINUX_COMPILER_H
#define LINUX_COMPILER_H
+#include "../../../include/linux/compiler_types.h"
+
#define WRITE_ONCE(var, val) \
(*((volatile typeof(val) *)(&(var))) = (val))
#define READ_ONCE(var) (*((volatile typeof(var) *)(&(var))))
+#define __aligned(x) __attribute((__aligned__(x)))
+
+/**
+ * data_race - mark an expression as containing intentional data races
+ *
+ * This data_race() macro is useful for situations in which data races
+ * should be forgiven. One example is diagnostic code that accesses
+ * shared variables but is not a part of the core synchronization design.
+ * For example, if accesses to a given variable are protected by a lock,
+ * except for diagnostic code, then the accesses under the lock should
+ * be plain C-language accesses and those in the diagnostic code should
+ * use data_race(). This way, KCSAN will complain if buggy lockless
+ * accesses to that variable are introduced, even if the buggy accesses
+ * are protected by READ_ONCE() or WRITE_ONCE().
+ *
+ * This macro *does not* affect normal code generation, but is a hint
+ * to tooling that data races here are to be ignored. If the access must
+ * be atomic *and* KCSAN should ignore the access, use both data_race()
+ * and READ_ONCE(), for example, data_race(READ_ONCE(x)).
+ */
+#define data_race(expr) \
+({ \
+ auto __v = (expr); \
+ __v; \
+})
+
#endif
diff --git a/tools/virtio/linux/cpumask.h b/tools/virtio/linux/cpumask.h
new file mode 100644
index 000000000000..307da69d6b26
--- /dev/null
+++ b/tools/virtio/linux/cpumask.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_CPUMASK_H
+#define _LINUX_CPUMASK_H
+
+#include <linux/kernel.h>
+
+#endif /* _LINUX_CPUMASK_H */
diff --git a/tools/virtio/linux/dma-mapping.h b/tools/virtio/linux/dma-mapping.h
index f91aeb5fe571..095958461788 100644
--- a/tools/virtio/linux/dma-mapping.h
+++ b/tools/virtio/linux/dma-mapping.h
@@ -24,9 +24,36 @@ enum dma_data_direction {
#define dma_map_page(d, p, o, s, dir) (page_to_phys(p) + (o))
#define dma_map_single(d, p, s, dir) (virt_to_phys(p))
+#define dma_map_single_attrs(d, p, s, dir, a) (virt_to_phys(p))
#define dma_mapping_error(...) (0)
-#define dma_unmap_single(...) do { } while (0)
-#define dma_unmap_page(...) do { } while (0)
+#define dma_unmap_single(d, a, s, r) do { (void)(d); (void)(a); (void)(s); (void)(r); } while (0)
+#define dma_unmap_page(d, a, s, r) do { (void)(d); (void)(a); (void)(s); (void)(r); } while (0)
+
+#define sg_dma_address(sg) (0)
+#define sg_dma_len(sg) (0)
+#define dma_need_sync(v, a) (0)
+#define dma_unmap_single_attrs(d, a, s, r, t) do { \
+ (void)(d); (void)(a); (void)(s); (void)(r); (void)(t); \
+} while (0)
+#define dma_sync_single_range_for_cpu(d, a, o, s, r) do { \
+ (void)(d); (void)(a); (void)(o); (void)(s); (void)(r); \
+} while (0)
+#define dma_sync_single_range_for_device(d, a, o, s, r) do { \
+ (void)(d); (void)(a); (void)(o); (void)(s); (void)(r); \
+} while (0)
+#define dma_max_mapping_size(...) SIZE_MAX
+
+/*
+ * A dma_addr_t can hold any valid DMA or bus address for the platform. It can
+ * be given to a device to use as a DMA source or target. It is specific to a
+ * given device and there may be a translation between the CPU physical address
+ * space and the bus address space.
+ *
+ * DMA_MAPPING_ERROR is the magic error code if a mapping failed. It should not
+ * be used directly in drivers, but checked for using dma_mapping_error()
+ * instead.
+ */
+#define DMA_MAPPING_ERROR (~(dma_addr_t)0)
#endif
diff --git a/tools/virtio/linux/gfp.h b/tools/virtio/linux/gfp.h
new file mode 100644
index 000000000000..43d146f236f1
--- /dev/null
+++ b/tools/virtio/linux/gfp.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LINUX_GFP_H
+#define __LINUX_GFP_H
+
+#include <linux/topology.h>
+
+#endif
diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h
index 7ef45a4a3cba..6702008f7f5c 100644
--- a/tools/virtio/linux/kernel.h
+++ b/tools/virtio/linux/kernel.h
@@ -10,7 +10,11 @@
#include <stdarg.h>
#include <linux/compiler.h>
+#include "../../../include/linux/container_of.h"
+#include <linux/log2.h>
#include <linux/types.h>
+#include <linux/overflow.h>
+#include <linux/list.h>
#include <linux/printk.h>
#include <linux/bug.h>
#include <errno.h>
@@ -27,7 +31,6 @@
#define READ 0
#define WRITE 1
-typedef unsigned long long phys_addr_t;
typedef unsigned long long dma_addr_t;
typedef size_t __kernel_size_t;
typedef unsigned int __wsum;
@@ -105,12 +108,6 @@ static inline void free_page(unsigned long addr)
free((void *)addr);
}
-#define container_of(ptr, type, member) ({ \
- const typeof( ((type *)0)->member ) *__mptr = (ptr); \
- (type *)( (char *)__mptr - offsetof(type,member) );})
-
-#define uninitialized_var(x) x = x
-
# ifndef likely
# define likely(x) (__builtin_expect(!!(x), 1))
# endif
@@ -118,6 +115,16 @@ static inline void free_page(unsigned long addr)
# define unlikely(x) (__builtin_expect(!!(x), 0))
# endif
+static inline void *krealloc_array(void *p, size_t new_n, size_t new_size, gfp_t gfp)
+{
+ size_t bytes;
+
+ if (unlikely(check_mul_overflow(new_n, new_size, &bytes)))
+ return NULL;
+
+ return krealloc(p, bytes, gfp);
+}
+
#define pr_err(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
#ifdef DEBUG
#define pr_debug(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
@@ -126,8 +133,7 @@ static inline void free_page(unsigned long addr)
#endif
#define dev_err(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
#define dev_warn(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
-
-#define WARN_ON_ONCE(cond) ((cond) ? fprintf (stderr, "WARNING\n") : 0)
+#define dev_warn_once(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
#define min(x, y) ({ \
typeof(x) _min1 = (x); \
@@ -135,10 +141,4 @@ static inline void free_page(unsigned long addr)
(void) (&_min1 == &_min2); \
_min1 < _min2 ? _min1 : _min2; })
-/* TODO: empty stubs for now. Broken but enough for virtio_ring.c */
-#define list_add_tail(a, b) do {} while (0)
-#define list_del(a) do {} while (0)
-#define list_for_each_entry(a, b, c) while (0)
-/* end of stubs */
-
#endif /* KERNEL_H */
diff --git a/tools/virtio/linux/kmsan.h b/tools/virtio/linux/kmsan.h
new file mode 100644
index 000000000000..6cd2e3efd03d
--- /dev/null
+++ b/tools/virtio/linux/kmsan.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_KMSAN_H
+#define _LINUX_KMSAN_H
+
+#include <linux/gfp.h>
+
+inline void kmsan_handle_dma(phys_addr_t phys, size_t size,
+ enum dma_data_direction dir)
+{
+}
+
+#endif /* _LINUX_KMSAN_H */
diff --git a/tools/virtio/linux/mm_types.h b/tools/virtio/linux/mm_types.h
new file mode 100644
index 000000000000..356ba4d496f6
--- /dev/null
+++ b/tools/virtio/linux/mm_types.h
@@ -0,0 +1,3 @@
+struct folio {
+ struct page page;
+};
diff --git a/tools/virtio/linux/module.h b/tools/virtio/linux/module.h
index 9dfa96fea2b2..b91681fc1571 100644
--- a/tools/virtio/linux/module.h
+++ b/tools/virtio/linux/module.h
@@ -5,3 +5,10 @@
static __attribute__((unused)) const char *__MODULE_LICENSE_name = \
__MODULE_LICENSE_value
+#ifndef MODULE_AUTHOR
+#define MODULE_AUTHOR(x)
+#endif
+
+#ifndef MODULE_DESCRIPTION
+#define MODULE_DESCRIPTION(x)
+#endif
diff --git a/tools/virtio/linux/scatterlist.h b/tools/virtio/linux/scatterlist.h
index 369ee308b668..74d9e1825748 100644
--- a/tools/virtio/linux/scatterlist.h
+++ b/tools/virtio/linux/scatterlist.h
@@ -2,6 +2,7 @@
#ifndef SCATTERLIST_H
#define SCATTERLIST_H
#include <linux/kernel.h>
+#include <linux/bug.h>
struct scatterlist {
unsigned long page_link;
diff --git a/tools/virtio/linux/spinlock.h b/tools/virtio/linux/spinlock.h
new file mode 100644
index 000000000000..028e3cdcc5d3
--- /dev/null
+++ b/tools/virtio/linux/spinlock.h
@@ -0,0 +1,56 @@
+#ifndef SPINLOCK_H_STUB
+#define SPINLOCK_H_STUB
+
+#include <pthread.h>
+
+typedef pthread_spinlock_t spinlock_t;
+
+static inline void spin_lock_init(spinlock_t *lock)
+{
+ int r = pthread_spin_init(lock, 0);
+ assert(!r);
+}
+
+static inline void spin_lock(spinlock_t *lock)
+{
+ int ret = pthread_spin_lock(lock);
+ assert(!ret);
+}
+
+static inline void spin_unlock(spinlock_t *lock)
+{
+ int ret = pthread_spin_unlock(lock);
+ assert(!ret);
+}
+
+static inline void spin_lock_bh(spinlock_t *lock)
+{
+ spin_lock(lock);
+}
+
+static inline void spin_unlock_bh(spinlock_t *lock)
+{
+ spin_unlock(lock);
+}
+
+static inline void spin_lock_irq(spinlock_t *lock)
+{
+ spin_lock(lock);
+}
+
+static inline void spin_unlock_irq(spinlock_t *lock)
+{
+ spin_unlock(lock);
+}
+
+static inline void spin_lock_irqsave(spinlock_t *lock, unsigned long f)
+{
+ spin_lock(lock);
+}
+
+static inline void spin_unlock_irqrestore(spinlock_t *lock, unsigned long f)
+{
+ spin_unlock(lock);
+}
+
+#endif
diff --git a/tools/virtio/linux/topology.h b/tools/virtio/linux/topology.h
new file mode 100644
index 000000000000..910794afb993
--- /dev/null
+++ b/tools/virtio/linux/topology.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_TOPOLOGY_H
+#define _LINUX_TOPOLOGY_H
+
+#include <linux/cpumask.h>
+
+#endif /* _LINUX_TOPOLOGY_H */
diff --git a/tools/virtio/linux/uaccess.h b/tools/virtio/linux/uaccess.h
index 991dfb263998..f13828e0c409 100644
--- a/tools/virtio/linux/uaccess.h
+++ b/tools/virtio/linux/uaccess.h
@@ -6,15 +6,10 @@
extern void *__user_addr_min, *__user_addr_max;
-static inline void __chk_user_ptr(const volatile void *p, size_t size)
-{
- assert(p >= __user_addr_min && p + size <= __user_addr_max);
-}
-
#define put_user(x, ptr) \
({ \
typeof(ptr) __pu_ptr = (ptr); \
- __chk_user_ptr(__pu_ptr, sizeof(*__pu_ptr)); \
+ __chk_user_ptr(__pu_ptr); \
WRITE_ONCE(*(__pu_ptr), x); \
0; \
})
@@ -22,7 +17,7 @@ static inline void __chk_user_ptr(const volatile void *p, size_t size)
#define get_user(x, ptr) \
({ \
typeof(ptr) __pu_ptr = (ptr); \
- __chk_user_ptr(__pu_ptr, sizeof(*__pu_ptr)); \
+ __chk_user_ptr(__pu_ptr); \
x = READ_ONCE(*(__pu_ptr)); \
0; \
})
@@ -37,7 +32,6 @@ static void volatile_memcpy(volatile char *to, const volatile char *from,
static inline int copy_from_user(void *to, const void __user volatile *from,
unsigned long n)
{
- __chk_user_ptr(from, n);
volatile_memcpy(to, from, n);
return 0;
}
@@ -45,7 +39,6 @@ static inline int copy_from_user(void *to, const void __user volatile *from,
static inline int copy_to_user(void __user volatile *to, const void *from,
unsigned long n)
{
- __chk_user_ptr(to, n);
volatile_memcpy(to, from, n);
return 0;
}
diff --git a/tools/virtio/linux/virtio.h b/tools/virtio/linux/virtio.h
index b751350d4ce8..5d3440f474dd 100644
--- a/tools/virtio/linux/virtio.h
+++ b/tools/virtio/linux/virtio.h
@@ -3,6 +3,7 @@
#define LINUX_VIRTIO_H
#include <linux/scatterlist.h>
#include <linux/kernel.h>
+#include <linux/spinlock.h>
struct device {
void *parent;
@@ -11,18 +12,21 @@ struct device {
struct virtio_device {
struct device dev;
u64 features;
+ struct list_head vqs;
+ spinlock_t vqs_list_lock;
+ const struct virtio_config_ops *config;
};
struct virtqueue {
- /* TODO: commented as list macros are empty stubs for now.
- * Broken but enough for virtio_ring.c
- * struct list_head list; */
+ struct list_head list;
void (*callback)(struct virtqueue *vq);
const char *name;
struct virtio_device *vdev;
unsigned int index;
unsigned int num_free;
+ unsigned int num_max;
void *priv;
+ bool reset;
};
/* Interfaces exported by virtio_ring. */
diff --git a/tools/virtio/linux/virtio_config.h b/tools/virtio/linux/virtio_config.h
index dbf14c1e2188..42a564f22f2d 100644
--- a/tools/virtio/linux/virtio_config.h
+++ b/tools/virtio/linux/virtio_config.h
@@ -1,8 +1,15 @@
/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef LINUX_VIRTIO_CONFIG_H
+#define LINUX_VIRTIO_CONFIG_H
#include <linux/virtio_byteorder.h>
#include <linux/virtio.h>
#include <uapi/linux/virtio_config.h>
+struct virtio_config_ops {
+ int (*disable_vq_and_reset)(struct virtqueue *vq);
+ int (*enable_vq_after_reset)(struct virtqueue *vq);
+};
+
/*
* __virtio_test_bit - helper to test feature bits. For use by transports.
* Devices should normally use virtio_has_feature,
@@ -42,16 +49,16 @@ static inline void __virtio_clear_bit(struct virtio_device *vdev,
(__virtio_test_bit((dev), feature))
/**
- * virtio_has_iommu_quirk - determine whether this device has the iommu quirk
+ * virtio_has_dma_quirk - determine whether this device has the DMA quirk
* @vdev: the device
*/
-static inline bool virtio_has_iommu_quirk(const struct virtio_device *vdev)
+static inline bool virtio_has_dma_quirk(const struct virtio_device *vdev)
{
/*
* Note the reverse polarity of the quirk feature (compared to most
* other features), this is for compatibility with legacy systems.
*/
- return !virtio_has_feature(vdev, VIRTIO_F_IOMMU_PLATFORM);
+ return !virtio_has_feature(vdev, VIRTIO_F_ACCESS_PLATFORM);
}
static inline bool virtio_is_little_endian(struct virtio_device *vdev)
@@ -90,3 +97,5 @@ static inline __virtio64 cpu_to_virtio64(struct virtio_device *vdev, u64 val)
{
return __cpu_to_virtio64(virtio_is_little_endian(vdev), val);
}
+
+#endif
diff --git a/tools/virtio/linux/vringh.h b/tools/virtio/linux/vringh.h
index 9348957be56e..e11c6aece734 100644
--- a/tools/virtio/linux/vringh.h
+++ b/tools/virtio/linux/vringh.h
@@ -1 +1,2 @@
+#include <limits.h>
#include "../../../include/linux/vringh.h"
generated by cgit (git 2.34.1) at 2025-12-25 02:50:48 +0000