[Nouveau] [libdrm v3 01/14] nouveau: import and install a selection of nvif headers from the kernel

From: Ben Skeggs <bskeggs at redhat.com> This commit also modifies the install path of the main libdrm_nouveau header to be under a nouveau/ subdirectory. Signed-off-by: Ben Skeggs <bskeggs at redhat.com> --- include/drm/nouveau_drm.h | 1 + nouveau/Makefile.am | 11 +++- nouveau/libdrm_nouveau.pc.in | 2 +- nouveau/nvif/cl0080.h | 45 ++++++++++++++ nouveau/nvif/cl9097.h | 44 ++++++++++++++ nouveau/nvif/class.h | 141 +++++++++++++++++++++++++++++++++++++++++++ nouveau/nvif/if0002.h | 38 ++++++++++++ nouveau/nvif/if0003.h | 33 ++++++++++ nouveau/nvif/ioctl.h | 132 ++++++++++++++++++++++++++++++++++++++++ nouveau/nvif/unpack.h | 28 +++++++++ 10 files changed, 473 insertions(+), 2 deletions(-) create mode 100644 nouveau/nvif/cl0080.h create mode 100644 nouveau/nvif/cl9097.h create mode 100644 nouveau/nvif/class.h create mode 100644 nouveau/nvif/if0002.h create mode 100644 nouveau/nvif/if0003.h create mode 100644 nouveau/nvif/ioctl.h create mode 100644 nouveau/nvif/unpack.h diff --git a/include/drm/nouveau_drm.h b/include/drm/nouveau_drm.h index 87aefc5..e418f9f 100644 --- a/include/drm/nouveau_drm.h +++ b/include/drm/nouveau_drm.h @@ -200,6 +200,7 @@ struct drm_nouveau_sarea { #define DRM_NOUVEAU_GROBJ_ALLOC 0x04 #define DRM_NOUVEAU_NOTIFIEROBJ_ALLOC 0x05 #define DRM_NOUVEAU_GPUOBJ_FREE 0x06 +#define DRM_NOUVEAU_NVIF 0x07 #define DRM_NOUVEAU_GEM_NEW 0x40 #define DRM_NOUVEAU_GEM_PUSHBUF 0x41 #define DRM_NOUVEAU_GEM_CPU_PREP 0x42 diff --git a/nouveau/Makefile.am b/nouveau/Makefile.am index 25ea6dc..76cdeca 100644 --- a/nouveau/Makefile.am +++ b/nouveau/Makefile.am @@ -14,9 +14,18 @@ libdrm_nouveau_la_LIBADD = ../libdrm.la @PTHREADSTUBS_LIBS@ libdrm_nouveau_la_SOURCES = $(LIBDRM_NOUVEAU_FILES) -libdrm_nouveauincludedir = ${includedir}/libdrm +libdrm_nouveauincludedir = ${includedir}/libdrm/nouveau libdrm_nouveauinclude_HEADERS = $(LIBDRM_NOUVEAU_H_FILES) +libdrm_nouveaunvifincludedir = ${includedir}/libdrm/nouveau/nvif +libdrm_nouveaunvifinclude_HEADERS = nvif/class.h \ + nvif/cl0080.h \ + nvif/cl9097.h \ + nvif/if0002.h \ + nvif/if0003.h \ + nvif/ioctl.h \ + nvif/unpack.h + pkgconfigdir = @pkgconfigdir@ pkgconfig_DATA = libdrm_nouveau.pc diff --git a/nouveau/libdrm_nouveau.pc.in b/nouveau/libdrm_nouveau.pc.in index 9abfd81..7d0622e 100644 --- a/nouveau/libdrm_nouveau.pc.in +++ b/nouveau/libdrm_nouveau.pc.in @@ -7,5 +7,5 @@ Name: libdrm_nouveau Description: Userspace interface to nouveau kernel DRM services Version: @PACKAGE_VERSION@ Libs: -L${libdir} -ldrm_nouveau -Cflags: -I${includedir} -I${includedir}/libdrm +Cflags: -I${includedir} -I${includedir}/libdrm -I${includedir}/libdrm/nouveau Requires.private: libdrm diff --git a/nouveau/nvif/cl0080.h b/nouveau/nvif/cl0080.h new file mode 100644 index 0000000..331620a --- /dev/null +++ b/nouveau/nvif/cl0080.h @@ -0,0 +1,45 @@ +#ifndef __NVIF_CL0080_H__ +#define __NVIF_CL0080_H__ + +struct nv_device_v0 { + __u8 version; + __u8 pad01[7]; + __u64 device; /* device identifier, ~0 for client default */ +}; + +#define NV_DEVICE_V0_INFO 0x00 +#define NV_DEVICE_V0_TIME 0x01 + +struct nv_device_info_v0 { + __u8 version; +#define NV_DEVICE_INFO_V0_IGP 0x00 +#define NV_DEVICE_INFO_V0_PCI 0x01 +#define NV_DEVICE_INFO_V0_AGP 0x02 +#define NV_DEVICE_INFO_V0_PCIE 0x03 +#define NV_DEVICE_INFO_V0_SOC 0x04 + __u8 platform; + __u16 chipset; /* from NV_PMC_BOOT_0 */ + __u8 revision; /* from NV_PMC_BOOT_0 */ +#define NV_DEVICE_INFO_V0_TNT 0x01 +#define NV_DEVICE_INFO_V0_CELSIUS 0x02 +#define NV_DEVICE_INFO_V0_KELVIN 0x03 +#define NV_DEVICE_INFO_V0_RANKINE 0x04 +#define NV_DEVICE_INFO_V0_CURIE 0x05 +#define NV_DEVICE_INFO_V0_TESLA 0x06 +#define NV_DEVICE_INFO_V0_FERMI 0x07 +#define NV_DEVICE_INFO_V0_KEPLER 0x08 +#define NV_DEVICE_INFO_V0_MAXWELL 0x09 + __u8 family; + __u8 pad06[2]; + __u64 ram_size; + __u64 ram_user; + char chip[16]; + char name[64]; +}; + +struct nv_device_time_v0 { + __u8 version; + __u8 pad01[7]; + __u64 time; +}; +#endif diff --git a/nouveau/nvif/cl9097.h b/nouveau/nvif/cl9097.h new file mode 100644 index 0000000..4057676 --- /dev/null +++ b/nouveau/nvif/cl9097.h @@ -0,0 +1,44 @@ +#ifndef __NVIF_CL9097_H__ +#define __NVIF_CL9097_H__ + +#define FERMI_A_ZBC_COLOR 0x00 +#define FERMI_A_ZBC_DEPTH 0x01 + +struct fermi_a_zbc_color_v0 { + __u8 version; +#define FERMI_A_ZBC_COLOR_V0_FMT_ZERO 0x01 +#define FERMI_A_ZBC_COLOR_V0_FMT_UNORM_ONE 0x02 +#define FERMI_A_ZBC_COLOR_V0_FMT_RF32_GF32_BF32_AF32 0x04 +#define FERMI_A_ZBC_COLOR_V0_FMT_R16_G16_B16_A16 0x08 +#define FERMI_A_ZBC_COLOR_V0_FMT_RN16_GN16_BN16_AN16 0x0c +#define FERMI_A_ZBC_COLOR_V0_FMT_RS16_GS16_BS16_AS16 0x10 +#define FERMI_A_ZBC_COLOR_V0_FMT_RU16_GU16_BU16_AU16 0x14 +#define FERMI_A_ZBC_COLOR_V0_FMT_RF16_GF16_BF16_AF16 0x16 +#define FERMI_A_ZBC_COLOR_V0_FMT_A8R8G8B8 0x18 +#define FERMI_A_ZBC_COLOR_V0_FMT_A8RL8GL8BL8 0x1c +#define FERMI_A_ZBC_COLOR_V0_FMT_A2B10G10R10 0x20 +#define FERMI_A_ZBC_COLOR_V0_FMT_AU2BU10GU10RU10 0x24 +#define FERMI_A_ZBC_COLOR_V0_FMT_A8B8G8R8 0x28 +#define FERMI_A_ZBC_COLOR_V0_FMT_A8BL8GL8RL8 0x2c +#define FERMI_A_ZBC_COLOR_V0_FMT_AN8BN8GN8RN8 0x30 +#define FERMI_A_ZBC_COLOR_V0_FMT_AS8BS8GS8RS8 0x34 +#define FERMI_A_ZBC_COLOR_V0_FMT_AU8BU8GU8RU8 0x38 +#define FERMI_A_ZBC_COLOR_V0_FMT_A2R10G10B10 0x3c +#define FERMI_A_ZBC_COLOR_V0_FMT_BF10GF11RF11 0x40 + __u8 format; + __u8 index; + __u8 pad03[5]; + __u32 ds[4]; + __u32 l2[4]; +}; + +struct fermi_a_zbc_depth_v0 { + __u8 version; +#define FERMI_A_ZBC_DEPTH_V0_FMT_FP32 0x01 + __u8 format; + __u8 index; + __u8 pad03[5]; + __u32 ds; + __u32 l2; +}; +#endif diff --git a/nouveau/nvif/class.h b/nouveau/nvif/class.h new file mode 100644 index 0000000..4179cd6 --- /dev/null +++ b/nouveau/nvif/class.h @@ -0,0 +1,141 @@ +#ifndef __NVIF_CLASS_H__ +#define __NVIF_CLASS_H__ + +/* these class numbers are made up by us, and not nvidia-assigned */ +#define NVIF_CLASS_CONTROL /* if0001.h */ -1 +#define NVIF_CLASS_PERFMON /* if0002.h */ -2 +#define NVIF_CLASS_PERFDOM /* if0003.h */ -3 +#define NVIF_CLASS_SW_NV04 /* if0004.h */ -4 +#define NVIF_CLASS_SW_NV10 /* if0005.h */ -5 +#define NVIF_CLASS_SW_NV50 /* if0005.h */ -6 +#define NVIF_CLASS_SW_GF100 /* if0005.h */ -7 + +/* the below match nvidia-assigned (either in hw, or sw) class numbers */ +#define NV_DEVICE /* cl0080.h */ 0x00000080 + +#define NV_DMA_FROM_MEMORY /* cl0002.h */ 0x00000002 +#define NV_DMA_TO_MEMORY /* cl0002.h */ 0x00000003 +#define NV_DMA_IN_MEMORY /* cl0002.h */ 0x0000003d + +#define FERMI_TWOD_A 0x0000902d + +#define FERMI_MEMORY_TO_MEMORY_FORMAT_A 0x00009039 + +#define KEPLER_INLINE_TO_MEMORY_A 0x0000a040 +#define KEPLER_INLINE_TO_MEMORY_B 0x0000a140 + +#define NV04_DISP /* cl0046.h */ 0x00000046 + +#define NV03_CHANNEL_DMA /* cl506b.h */ 0x0000006b +#define NV10_CHANNEL_DMA /* cl506b.h */ 0x0000006e +#define NV17_CHANNEL_DMA /* cl506b.h */ 0x0000176e +#define NV40_CHANNEL_DMA /* cl506b.h */ 0x0000406e +#define NV50_CHANNEL_DMA /* cl506e.h */ 0x0000506e +#define G82_CHANNEL_DMA /* cl826e.h */ 0x0000826e + +#define NV50_CHANNEL_GPFIFO /* cl506f.h */ 0x0000506f +#define G82_CHANNEL_GPFIFO /* cl826f.h */ 0x0000826f +#define FERMI_CHANNEL_GPFIFO /* cl906f.h */ 0x0000906f +#define KEPLER_CHANNEL_GPFIFO_A /* cla06f.h */ 0x0000a06f +#define MAXWELL_CHANNEL_GPFIFO_A /* cla06f.h */ 0x0000b06f + +#define NV50_DISP /* cl5070.h */ 0x00005070 +#define G82_DISP /* cl5070.h */ 0x00008270 +#define GT200_DISP /* cl5070.h */ 0x00008370 +#define GT214_DISP /* cl5070.h */ 0x00008570 +#define GT206_DISP /* cl5070.h */ 0x00008870 +#define GF110_DISP /* cl5070.h */ 0x00009070 +#define GK104_DISP /* cl5070.h */ 0x00009170 +#define GK110_DISP /* cl5070.h */ 0x00009270 +#define GM107_DISP /* cl5070.h */ 0x00009470 +#define GM204_DISP /* cl5070.h */ 0x00009570 + +#define NV31_MPEG 0x00003174 +#define G82_MPEG 0x00008274 + +#define NV74_VP2 0x00007476 + +#define NV50_DISP_CURSOR /* cl507a.h */ 0x0000507a +#define G82_DISP_CURSOR /* cl507a.h */ 0x0000827a +#define GT214_DISP_CURSOR /* cl507a.h */ 0x0000857a +#define GF110_DISP_CURSOR /* cl507a.h */ 0x0000907a +#define GK104_DISP_CURSOR /* cl507a.h */ 0x0000917a + +#define NV50_DISP_OVERLAY /* cl507b.h */ 0x0000507b +#define G82_DISP_OVERLAY /* cl507b.h */ 0x0000827b +#define GT214_DISP_OVERLAY /* cl507b.h */ 0x0000857b +#define GF110_DISP_OVERLAY /* cl507b.h */ 0x0000907b +#define GK104_DISP_OVERLAY /* cl507b.h */ 0x0000917b + +#define NV50_DISP_BASE_CHANNEL_DMA /* cl507c.h */ 0x0000507c +#define G82_DISP_BASE_CHANNEL_DMA /* cl507c.h */ 0x0000827c +#define GT200_DISP_BASE_CHANNEL_DMA /* cl507c.h */ 0x0000837c +#define GT214_DISP_BASE_CHANNEL_DMA /* cl507c.h */ 0x0000857c +#define GF110_DISP_BASE_CHANNEL_DMA /* cl507c.h */ 0x0000907c +#define GK104_DISP_BASE_CHANNEL_DMA /* cl507c.h */ 0x0000917c +#define GK110_DISP_BASE_CHANNEL_DMA /* cl507c.h */ 0x0000927c + +#define NV50_DISP_CORE_CHANNEL_DMA /* cl507d.h */ 0x0000507d +#define G82_DISP_CORE_CHANNEL_DMA /* cl507d.h */ 0x0000827d +#define GT200_DISP_CORE_CHANNEL_DMA /* cl507d.h */ 0x0000837d +#define GT214_DISP_CORE_CHANNEL_DMA /* cl507d.h */ 0x0000857d +#define GT206_DISP_CORE_CHANNEL_DMA /* cl507d.h */ 0x0000887d +#define GF110_DISP_CORE_CHANNEL_DMA /* cl507d.h */ 0x0000907d +#define GK104_DISP_CORE_CHANNEL_DMA /* cl507d.h */ 0x0000917d +#define GK110_DISP_CORE_CHANNEL_DMA /* cl507d.h */ 0x0000927d +#define GM107_DISP_CORE_CHANNEL_DMA /* cl507d.h */ 0x0000947d +#define GM204_DISP_CORE_CHANNEL_DMA /* cl507d.h */ 0x0000957d + +#define NV50_DISP_OVERLAY_CHANNEL_DMA /* cl507e.h */ 0x0000507e +#define G82_DISP_OVERLAY_CHANNEL_DMA /* cl507e.h */ 0x0000827e +#define GT200_DISP_OVERLAY_CHANNEL_DMA /* cl507e.h */ 0x0000837e +#define GT214_DISP_OVERLAY_CHANNEL_DMA /* cl507e.h */ 0x0000857e +#define GF110_DISP_OVERLAY_CONTROL_DMA /* cl507e.h */ 0x0000907e +#define GK104_DISP_OVERLAY_CONTROL_DMA /* cl507e.h */ 0x0000917e + +#define FERMI_A /* cl9097.h */ 0x00009097 +#define FERMI_B /* cl9097.h */ 0x00009197 +#define FERMI_C /* cl9097.h */ 0x00009297 + +#define KEPLER_A /* cl9097.h */ 0x0000a097 +#define KEPLER_B /* cl9097.h */ 0x0000a197 +#define KEPLER_C /* cl9097.h */ 0x0000a297 + +#define MAXWELL_A /* cl9097.h */ 0x0000b097 +#define MAXWELL_B /* cl9097.h */ 0x0000b197 + +#define NV74_BSP 0x000074b0 + +#define GT212_MSVLD 0x000085b1 +#define IGT21A_MSVLD 0x000086b1 +#define G98_MSVLD 0x000088b1 +#define GF100_MSVLD 0x000090b1 +#define GK104_MSVLD 0x000095b1 + +#define GT212_MSPDEC 0x000085b2 +#define G98_MSPDEC 0x000088b2 +#define GF100_MSPDEC 0x000090b2 +#define GK104_MSPDEC 0x000095b2 + +#define GT212_MSPPP 0x000085b3 +#define G98_MSPPP 0x000088b3 +#define GF100_MSPPP 0x000090b3 + +#define G98_SEC 0x000088b4 + +#define GT212_DMA 0x000085b5 +#define FERMI_DMA 0x000090b5 +#define KEPLER_DMA_COPY_A 0x0000a0b5 +#define MAXWELL_DMA_COPY_A 0x0000b0b5 + +#define FERMI_DECOMPRESS 0x000090b8 + +#define FERMI_COMPUTE_A 0x000090c0 +#define FERMI_COMPUTE_B 0x000091c0 +#define KEPLER_COMPUTE_A 0x0000a0c0 +#define KEPLER_COMPUTE_B 0x0000a1c0 +#define MAXWELL_COMPUTE_A 0x0000b0c0 +#define MAXWELL_COMPUTE_B 0x0000b1c0 + +#define NV74_CIPHER 0x000074c1 +#endif diff --git a/nouveau/nvif/if0002.h b/nouveau/nvif/if0002.h new file mode 100644 index 0000000..c04c91d --- /dev/null +++ b/nouveau/nvif/if0002.h @@ -0,0 +1,38 @@ +#ifndef __NVIF_IF0002_H__ +#define __NVIF_IF0002_H__ + +#define NVIF_PERFMON_V0_QUERY_DOMAIN 0x00 +#define NVIF_PERFMON_V0_QUERY_SIGNAL 0x01 +#define NVIF_PERFMON_V0_QUERY_SOURCE 0x02 + +struct nvif_perfmon_query_domain_v0 { + __u8 version; + __u8 id; + __u8 counter_nr; + __u8 iter; + __u16 signal_nr; + __u8 pad05[2]; + char name[64]; +}; + +struct nvif_perfmon_query_signal_v0 { + __u8 version; + __u8 domain; + __u16 iter; + __u8 signal; + __u8 source_nr; + __u8 pad05[2]; + char name[64]; +}; + +struct nvif_perfmon_query_source_v0 { + __u8 version; + __u8 domain; + __u8 signal; + __u8 iter; + __u8 pad04[4]; + __u32 source; + __u32 mask; + char name[64]; +}; +#endif diff --git a/nouveau/nvif/if0003.h b/nouveau/nvif/if0003.h new file mode 100644 index 0000000..0cd03ef --- /dev/null +++ b/nouveau/nvif/if0003.h @@ -0,0 +1,33 @@ +#ifndef __NVIF_IF0003_H__ +#define __NVIF_IF0003_H__ + +struct nvif_perfdom_v0 { + __u8 version; + __u8 domain; + __u8 mode; + __u8 pad03[1]; + struct { + __u8 signal[4]; + __u64 source[4][8]; + __u16 logic_op; + } ctr[4]; +}; + +#define NVIF_PERFDOM_V0_INIT 0x00 +#define NVIF_PERFDOM_V0_SAMPLE 0x01 +#define NVIF_PERFDOM_V0_READ 0x02 + +struct nvif_perfdom_init { +}; + +struct nvif_perfdom_sample { +}; + +struct nvif_perfdom_read_v0 { + __u8 version; + __u8 pad01[7]; + __u32 ctr[4]; + __u32 clk; + __u8 pad04[4]; +}; +#endif diff --git a/nouveau/nvif/ioctl.h b/nouveau/nvif/ioctl.h new file mode 100644 index 0000000..c5f5eb8 --- /dev/null +++ b/nouveau/nvif/ioctl.h @@ -0,0 +1,132 @@ +#ifndef __NVIF_IOCTL_H__ +#define __NVIF_IOCTL_H__ + +#define NVIF_VERSION_LATEST 0x0000000000000000ULL + +struct nvif_ioctl_v0 { + __u8 version; +#define NVIF_IOCTL_V0_NOP 0x00 +#define NVIF_IOCTL_V0_SCLASS 0x01 +#define NVIF_IOCTL_V0_NEW 0x02 +#define NVIF_IOCTL_V0_DEL 0x03 +#define NVIF_IOCTL_V0_MTHD 0x04 +#define NVIF_IOCTL_V0_RD 0x05 +#define NVIF_IOCTL_V0_WR 0x06 +#define NVIF_IOCTL_V0_MAP 0x07 +#define NVIF_IOCTL_V0_UNMAP 0x08 +#define NVIF_IOCTL_V0_NTFY_NEW 0x09 +#define NVIF_IOCTL_V0_NTFY_DEL 0x0a +#define NVIF_IOCTL_V0_NTFY_GET 0x0b +#define NVIF_IOCTL_V0_NTFY_PUT 0x0c + __u8 type; + __u8 pad02[4]; +#define NVIF_IOCTL_V0_OWNER_NVIF 0x00 +#define NVIF_IOCTL_V0_OWNER_ANY 0xff + __u8 owner; +#define NVIF_IOCTL_V0_ROUTE_NVIF 0x00 +#define NVIF_IOCTL_V0_ROUTE_HIDDEN 0xff + __u8 route; + __u64 token; + __u64 object; + __u8 data[]; /* ioctl data (below) */ +}; + +struct nvif_ioctl_nop_v0 { + __u64 version; +}; + +struct nvif_ioctl_sclass_v0 { + /* nvif_ioctl ... */ + __u8 version; + __u8 count; + __u8 pad02[6]; + struct nvif_ioctl_sclass_oclass_v0 { + __s32 oclass; + __s16 minver; + __s16 maxver; + } oclass[]; +}; + +struct nvif_ioctl_new_v0 { + /* nvif_ioctl ... */ + __u8 version; + __u8 pad01[6]; + __u8 route; + __u64 token; + __u64 object; + __u32 handle; + __s32 oclass; + __u8 data[]; /* class data (class.h) */ +}; + +struct nvif_ioctl_del { +}; + +struct nvif_ioctl_rd_v0 { + /* nvif_ioctl ... */ + __u8 version; + __u8 size; + __u8 pad02[2]; + __u32 data; + __u64 addr; +}; + +struct nvif_ioctl_wr_v0 { + /* nvif_ioctl ... */ + __u8 version; + __u8 size; + __u8 pad02[2]; + __u32 data; + __u64 addr; +}; + +struct nvif_ioctl_map_v0 { + /* nvif_ioctl ... */ + __u8 version; + __u8 pad01[3]; + __u32 length; + __u64 handle; +}; + +struct nvif_ioctl_unmap { +}; + +struct nvif_ioctl_ntfy_new_v0 { + /* nvif_ioctl ... */ + __u8 version; + __u8 event; + __u8 index; + __u8 pad03[5]; + __u8 data[]; /* event request data (event.h) */ +}; + +struct nvif_ioctl_ntfy_del_v0 { + /* nvif_ioctl ... */ + __u8 version; + __u8 index; + __u8 pad02[6]; +}; + +struct nvif_ioctl_ntfy_get_v0 { + /* nvif_ioctl ... */ + __u8 version; + __u8 index; + __u8 pad02[6]; +}; + +struct nvif_ioctl_ntfy_put_v0 { + /* nvif_ioctl ... */ + __u8 version; + __u8 index; + __u8 pad02[6]; +}; + +struct nvif_ioctl_mthd_v0 { + /* nvif_ioctl ... */ + __u8 version; + __u8 method; + __u8 pad02[6]; + __u8 data[]; /* method data (class.h) */ +}; + +#endif diff --git a/nouveau/nvif/unpack.h b/nouveau/nvif/unpack.h new file mode 100644 index 0000000..751bcf4 --- /dev/null +++ b/nouveau/nvif/unpack.h @@ -0,0 +1,28 @@ +#ifndef __NVIF_UNPACK_H__ +#define __NVIF_UNPACK_H__ + +#define nvif_unvers(r,d,s,m) ({ \ + void **_data = (d); __u32 *_size = (s); int _ret = (r); \ + if (_ret == -ENOSYS && *_size == sizeof(m)) { \ + *_data = NULL; \ + *_size = _ret = 0; \ + } \ + _ret; \ +}) + +#define nvif_unpack(r,d,s,m,vl,vh,x) ({ \ + void **_data = (d); __u32 *_size = (s); \ + int _ret = (r), _vl = (vl), _vh = (vh); \ + if (_ret == -ENOSYS && *_size >= sizeof(m) && \ + (m).version >= _vl && (m).version <= _vh) { \ + *_data = (__u8 *)*_data + sizeof(m); \ + *_size = *_size - sizeof(m); \ + if (_ret = 0, !(x)) { \ + _ret = *_size ? -E2BIG : 0; \ + *_data = NULL; \ + *_size = 0; \ + } \ + } \ + _ret; \ +}) +#endif -- 2.6.4