X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/b3b42765712afed5a35c9be5c832f4a06bd85e7a..8fce4520de1f257819b16f9253fa28dcdae743f4:/lunaix-os/kernel/device/device.c diff --git a/lunaix-os/kernel/device/device.c b/lunaix-os/kernel/device/device.c index 282f44d..ae855ef 100644 --- a/lunaix-os/kernel/device/device.c +++ b/lunaix-os/kernel/device/device.c @@ -1,22 +1,64 @@ -#include + #include +#include #include +#include #include #include +#include +#include + +#include + +#include +#include static DEFINE_LLIST(root_list); static volatile dev_t devid = 0; +void +device_prepare(struct device* dev) +{ + dev->magic = DEV_STRUCT_MAGIC; + dev->dev_id = devid++; + + llist_init_head(&dev->children); +} + +static void +device_setname_vargs(struct device* dev, char* fmt, va_list args) +{ + size_t strlen = + __ksprintf_internal(dev->name_val, fmt, DEVICE_NAME_SIZE, args); + + dev->name = HSTR(dev->name_val, strlen); + + hstr_rehash(&dev->name, HSTR_FULL_HASH); +} + +void +device_setname(struct device* dev, char* fmt, ...) +{ + va_list args; + va_start(args, fmt); + + device_setname_vargs(dev, fmt, args); + + va_end(args); +} + struct device* -device_add(struct device* parent, - void* underlay, - char* name_fmt, - uint32_t type, - va_list args) +device_add_vargs(struct device* parent, + void* underlay, + char* name_fmt, + u32_t type, + va_list args) { struct device* dev = vzalloc(sizeof(struct device)); + device_prepare(dev); + if (parent) { assert((parent->dev_type & DEV_MSKIF) == DEV_IFCAT); llist_append(&parent->children, &dev->siblings); @@ -24,18 +66,44 @@ device_add(struct device* parent, llist_append(&root_list, &dev->siblings); } - size_t strlen = - __ksprintf_internal(dev->name_val, name_fmt, DEVICE_NAME_SIZE, args); + if (name_fmt) { + device_setname_vargs(dev, name_fmt, args); + } - dev->dev_id = devid++; - dev->name = HSTR(dev->name_val, strlen); dev->parent = parent; dev->underlay = underlay; dev->dev_type = type; - hstr_rehash(&dev->name, HSTR_FULL_HASH); - llist_init_head(&dev->children); + return dev; +} + +struct device* +device_add(struct device* parent, + void* underlay, + u32_t type, + char* name_fmt, + ...) +{ + va_list args; + va_start(args, name_fmt); + struct device* dev = + device_add_vargs(parent, underlay, name_fmt, type, args); + + va_end(args); + return dev; +} + +struct device* +device_addsys(struct device* parent, void* underlay, char* name_fmt, ...) +{ + va_list args; + va_start(args, name_fmt); + + struct device* dev = + device_add_vargs(parent, underlay, name_fmt, DEV_IFSEQ, args); + + va_end(args); return dev; } @@ -46,7 +114,7 @@ device_addseq(struct device* parent, void* underlay, char* name_fmt, ...) va_start(args, name_fmt); struct device* dev = - device_add(parent, underlay, name_fmt, DEV_IFSEQ, args); + device_add_vargs(parent, underlay, name_fmt, DEV_IFSEQ, args); va_end(args); return dev; @@ -59,7 +127,7 @@ device_addvol(struct device* parent, void* underlay, char* name_fmt, ...) va_start(args, name_fmt); struct device* dev = - device_add(parent, underlay, name_fmt, DEV_IFVOL, args); + device_add_vargs(parent, underlay, name_fmt, DEV_IFVOL, args); va_end(args); return dev; @@ -71,7 +139,8 @@ device_addcat(struct device* parent, char* name_fmt, ...) va_list args; va_start(args, name_fmt); - struct device* dev = device_add(parent, NULL, name_fmt, DEV_IFCAT, args); + struct device* dev = + device_add_vargs(parent, NULL, name_fmt, DEV_IFCAT, args); va_end(args); return dev; @@ -93,9 +162,9 @@ device_getbyid(struct llist_header* devlist, dev_t id) } struct device* -device_getbyhname(struct llist_header* devlist, struct hstr* name) +device_getbyhname(struct device* root_dev, struct hstr* name) { - devlist = devlist ? devlist : &root_list; + struct llist_header* devlist = root_dev ? &root_dev->children : &root_list; struct device *pos, *n; llist_for_each(pos, n, devlist, siblings) { @@ -108,12 +177,12 @@ device_getbyhname(struct llist_header* devlist, struct hstr* name) } struct device* -device_getbyname(struct llist_header* devlist, const char* name, size_t len) +device_getbyname(struct device* root_dev, const char* name, size_t len) { struct hstr hname = HSTR(name, len); hstr_rehash(&hname, HSTR_FULL_HASH); - return device_getbyhname(devlist, &hname); + return device_getbyhname(root_dev, &hname); } void @@ -124,9 +193,9 @@ device_remove(struct device* dev) } struct device* -device_getbyoffset(struct llist_header* devlist, int offset) +device_getbyoffset(struct device* root_dev, int offset) { - devlist = devlist ? devlist : &root_list; + struct llist_header* devlist = root_dev ? &root_dev->children : &root_list; struct device *pos, *n; int off = 0; llist_for_each(pos, n, devlist, siblings) @@ -136,4 +205,53 @@ device_getbyoffset(struct llist_header* devlist, int offset) } } return NULL; +} + +static inline void +device_populate_info(struct device* dev, struct dev_info* devinfo) +{ + devinfo->dev_id.meta = dev->class.meta; + devinfo->dev_id.device = dev->class.device; + devinfo->dev_id.variant = dev->class.variant; + + if (!devinfo->dev_name.buf) { + return; + } + + struct device_def* def = devdef_byclass(&dev->class); + size_t buflen = devinfo->dev_name.buf_len; + + strncpy(devinfo->dev_name.buf, def->name, buflen); + devinfo->dev_name.buf[buflen - 1] = 0; +} + +__DEFINE_LXSYSCALL3(int, ioctl, int, fd, int, req, va_list, args) +{ + int errno = -1; + struct v_fd* fd_s; + if ((errno &= vfs_getfd(fd, &fd_s))) { + goto done; + } + + struct device* dev = (struct device*)fd_s->file->inode->data; + if (dev->magic != DEV_STRUCT_MAGIC) { + errno &= ENODEV; + goto done; + } + + if (req == DEVIOIDENT) { + struct dev_info* devinfo = va_arg(args, struct dev_info*); + device_populate_info(dev, devinfo); + errno = 0; + } + + if (!dev->ops.exec_cmd) { + errno &= ENOTSUP; + goto done; + } + + errno &= dev->ops.exec_cmd(dev, req, args); + +done: + return DO_STATUS_OR_RETURN(errno); } \ No newline at end of file