/**
* kernfs_create_root - create a new kernfs hierarchy
* @scops: optional syscall operations for the hierarchy
* @flags: KERNFS_ROOT_* flags
* @priv: opaque data associated with the new directory
*
* Returns the root of the new hierarchy on success, ERR_PTR() value on
* failure.
*/
struct kernfs_root *kernfs_create_root(struct kernfs_syscall_ops *scops,
unsigned int flags, void *priv)
{
struct kernfs_root *root;
struct kernfs_node *kn;
root = kzalloc(sizeof(*root), GFP_KERNEL);
if (!root)
return ERR_PTR(-ENOMEM);
ida_init(&root->ino_ida);
INIT_LIST_HEAD(&root->supers);
kn = __kernfs_new_node(root, "", S_IFDIR | S_IRUGO | S_IXUGO,
KERNFS_DIR);
if (!kn) {
ida_destroy(&root->ino_ida);
kfree(root);
return ERR_PTR(-ENOMEM);
}
kn->priv = priv;
kn->dir.root = root;
root->syscall_ops = scops;
root->flags = flags;
root->kn = kn;
init_waitqueue_head(&root->deactivate_waitq);
if (!(root->flags & KERNFS_ROOT_CREATE_DEACTIVATED))
kernfs_activate(kn);
return root;
}
/*! 2017. 1.07 study -ing */
struct kernfs_root *kernfs_create_root(struct kernfs_dir_ops *kdops, void *priv)
{
struct kernfs_root *root;
struct kernfs_node *kn;
root = kzalloc(sizeof(*root), GFP_KERNEL);
if (!root)
return ERR_PTR(-ENOMEM);
ida_init(&root->ino_ida);
kn = __kernfs_new_node(root, "", S_IFDIR | S_IRUGO | S_IXUGO,
KERNFS_DIR);
if (!kn) {
ida_destroy(&root->ino_ida);
kfree(root);
return ERR_PTR(-ENOMEM);
}
/*! 초기값 대입 */
kn->flags &= ~KERNFS_REMOVED;
kn->priv = priv;
kn->dir.root = root;
root->dir_ops = kdops;
root->kn = kn;
return root;
}
static int __init w1_ds2760_init(void)
{
printk(KERN_INFO "1-Wire driver for the DS2760 battery monitor "
" chip - (c) 2004-2005, Szabolcs Gyurko\n");
ida_init(&bat_ida);
return w1_register_family(&w1_ds2760_family);
}
int i915_gem_context_init(struct drm_i915_private *dev_priv)
{
struct i915_gem_context *ctx;
/* Init should only be called once per module load. Eventually the
* restriction on the context_disabled check can be loosened. */
if (WARN_ON(dev_priv->kernel_context))
return 0;
if (intel_vgpu_active(dev_priv) &&
HAS_LOGICAL_RING_CONTEXTS(dev_priv)) {
if (!i915.enable_execlists) {
DRM_INFO("Only EXECLIST mode is supported in vgpu.\n");
return -EINVAL;
}
}
/* Using the simple ida interface, the max is limited by sizeof(int) */
BUILD_BUG_ON(MAX_CONTEXT_HW_ID > INT_MAX);
ida_init(&dev_priv->context_hw_ida);
if (i915.enable_execlists) {
/* NB: intentionally left blank. We will allocate our own
* backing objects as we need them, thank you very much */
dev_priv->hw_context_size = 0;
} else if (HAS_HW_CONTEXTS(dev_priv)) {
dev_priv->hw_context_size =
round_up(get_context_size(dev_priv),
I915_GTT_PAGE_SIZE);
if (dev_priv->hw_context_size > (1<<20)) {
DRM_DEBUG_DRIVER("Disabling HW Contexts; invalid size %d\n",
dev_priv->hw_context_size);
dev_priv->hw_context_size = 0;
}
}
ctx = i915_gem_create_context(dev_priv, NULL);
if (IS_ERR(ctx)) {
DRM_ERROR("Failed to create default global context (error %ld)\n",
PTR_ERR(ctx));
return PTR_ERR(ctx);
}
/* For easy recognisablity, we want the kernel context to be 0 and then
* all user contexts will have non-zero hw_id.
*/
GEM_BUG_ON(ctx->hw_id);
i915_gem_context_clear_bannable(ctx);
ctx->priority = I915_PRIORITY_MIN; /* lowest priority; idle task */
dev_priv->kernel_context = ctx;
GEM_BUG_ON(!i915_gem_context_is_kernel(ctx));
DRM_DEBUG_DRIVER("%s context support initialized\n",
i915.enable_execlists ? "LR" :
dev_priv->hw_context_size ? "HW" : "fake");
return 0;
}
struct greybus_host_device *greybus_create_hd(struct greybus_host_driver *driver,
struct device *parent,
size_t buffer_size_max)
{
struct greybus_host_device *hd;
/*
* Validate that the driver implements all of the callbacks
* so that we don't have to every time we make them.
*/
if ((!driver->message_send) || (!driver->message_cancel)) {
pr_err("Must implement all greybus_host_driver callbacks!\n");
return ERR_PTR(-EINVAL);
}
if (buffer_size_max < GB_OPERATION_MESSAGE_SIZE_MIN) {
dev_err(parent, "greybus host-device buffers too small\n");
return NULL;
}
/*
* Make sure to never allocate messages larger than what the Greybus
* protocol supports.
*/
if (buffer_size_max > GB_OPERATION_MESSAGE_SIZE_MAX) {
dev_warn(parent, "limiting buffer size to %u\n",
GB_OPERATION_MESSAGE_SIZE_MAX);
buffer_size_max = GB_OPERATION_MESSAGE_SIZE_MAX;
}
hd = kzalloc(sizeof(*hd) + driver->hd_priv_size, GFP_KERNEL);
if (!hd)
return ERR_PTR(-ENOMEM);
kref_init(&hd->kref);
hd->parent = parent;
hd->driver = driver;
INIT_LIST_HEAD(&hd->interfaces);
INIT_LIST_HEAD(&hd->connections);
ida_init(&hd->cport_id_map);
hd->buffer_size_max = buffer_size_max;
/*
* Initialize AP's SVC protocol connection:
*
* This is required as part of early initialization of the host device
* as we need this connection in order to start any kind of message
* exchange between the AP and the SVC. SVC will start with a
* 'get-version' request followed by a 'svc-hello' message and at that
* time we will create a fully initialized svc-connection, as we need
* endo-id and AP's interface id for that.
*/
if (!gb_ap_svc_connection_create(hd)) {
kref_put_mutex(&hd->kref, free_hd, &hd_mutex);
return ERR_PTR(-ENOMEM);
}
return hd;
}
void mlx5_init_reserved_gids(struct mlx5_core_dev *dev)
{
unsigned int tblsz = MLX5_CAP_ROCE(dev, roce_address_table_size);
ida_init(&dev->roce.reserved_gids.ida);
dev->roce.reserved_gids.start = tblsz;
dev->roce.reserved_gids.count = 0;
}
static int init(void)
{
ida_init(&ida);
class = class_create(THIS_MODULE, "dce6_display");
if (IS_ERR_OR_NULL(class)) {
if (IS_ERR(class))
return PTR_ERR(class);
else
return -ENOMEM;
}
static void *new_pts_fs_info(void)
{
struct pts_fs_info *fsi;
fsi = kzalloc(sizeof(struct pts_fs_info), GFP_KERNEL);
if (!fsi)
return NULL;
ida_init(&fsi->allocated_ptys);
fsi->mount_opts.mode = DEVPTS_DEFAULT_MODE;
fsi->mount_opts.ptmxmode = DEVPTS_DEFAULT_PTMX_MODE;
return fsi;
}
int main(int argc, char* argv[]) {
//freopen( "stderr.log", "w", stderr );
struct timeval tvBegin, tvReceiving, tvEnd, t1, t2, totalTime;
// Initial timestamp
gettimeofday(&tvBegin, NULL);
timeval_print(&tvBegin);
//INPUTS: Filename to Decode
char * filename = argv[1];
ida_init("../src/zhtNeighborFile", "../lib/ZHT/zht.cfg");
ida_download(filename);
// Take final timestamp
gettimeofday(&tvEnd, NULL);
timeval_print(&tvEnd);
// Compute throughput:
timeval_subtract(&totalTime, &tvEnd, &tvBegin);
// Filesize
FILE *file;
file = fopen(filename, "rb");
if(!file){
dbgprintf("Metadata Fill ERROR: %s\n", strerror(errno));
exit(EXIT_FAILURE);//maybe a return 1 could be appropriate?
}
fseek(file, 0L, SEEK_END);
int fileSize = ftell(file);
fclose(file);
double throughputTotal = fileSize / (double)(1000000 * totalTime.tv_sec + totalTime.tv_usec);
// printf's separated by commas for the CSV
printf("%s,%lu,%f\n", filename, fileSize, throughputTotal);
ida_finalize();
return 0;
}
static int vmw_gmrid_man_init(struct ttm_mem_type_manager *man,
unsigned long p_size)
{
struct vmw_private *dev_priv =
container_of(man->bdev, struct vmw_private, bdev);
struct vmwgfx_gmrid_man *gman =
kzalloc(sizeof(*gman), GFP_KERNEL);
if (unlikely(gman == NULL))
return -ENOMEM;
spin_lock_init(&gman->lock);
gman->max_gmr_pages = dev_priv->max_gmr_pages;
gman->used_gmr_pages = 0;
ida_init(&gman->gmr_ida);
gman->max_gmr_ids = p_size;
man->priv = (void *) gman;
return 0;
}
static int
ida_eisa_attach(device_t dev)
{
struct ida_softc *ida;
struct ida_board *board;
int error;
int rid;
ida = device_get_softc(dev);
ida->dev = dev;
board = ida_eisa_match(eisa_get_id(dev));
ida->cmd = *board->accessor;
ida->flags = board->flags;
mtx_init(&ida->lock, "ida", NULL, MTX_DEF);
callout_init_mtx(&ida->ch, &ida->lock, 0);
ida->regs_res_type = SYS_RES_IOPORT;
ida->regs_res_id = 0;
ida->regs = bus_alloc_resource_any(dev, ida->regs_res_type,
&ida->regs_res_id, RF_ACTIVE);
if (ida->regs == NULL) {
device_printf(dev, "can't allocate register resources\n");
return (ENOMEM);
}
error = bus_dma_tag_create(
/* parent */ bus_get_dma_tag(dev),
/* alignment */ 0,
/* boundary */ 0,
/* lowaddr */ BUS_SPACE_MAXADDR_32BIT,
/* highaddr */ BUS_SPACE_MAXADDR,
/* filter */ NULL,
/* filterarg */ NULL,
/* maxsize */ MAXBSIZE,
/* nsegments */ IDA_NSEG,
/* maxsegsize */ BUS_SPACE_MAXSIZE_32BIT,
/* flags */ BUS_DMA_ALLOCNOW,
/* lockfunc */ NULL,
/* lockarg */ NULL,
&ida->parent_dmat);
if (error != 0) {
device_printf(dev, "can't allocate DMA tag\n");
ida_free(ida);
return (ENOMEM);
}
rid = 0;
ida->irq_res_type = SYS_RES_IRQ;
ida->irq = bus_alloc_resource_any(dev, ida->irq_res_type, &rid,
RF_ACTIVE | RF_SHAREABLE);
if (ida->irq == NULL) {
ida_free(ida);
return (ENOMEM);
}
error = bus_setup_intr(dev, ida->irq, INTR_TYPE_BIO | INTR_ENTROPY | INTR_MPSAFE,
NULL, ida_intr, ida, &ida->ih);
if (error) {
device_printf(dev, "can't setup interrupt\n");
ida_free(ida);
return (ENOMEM);
}
error = ida_init(ida);
if (error) {
ida_free(ida);
return (error);
}
return (0);
}
static struct nd_region *nd_region_create(struct nvdimm_bus *nvdimm_bus,
struct nd_region_desc *ndr_desc, struct device_type *dev_type,
const char *caller)
{
struct nd_region *nd_region;
struct device *dev;
void *region_buf;
unsigned int i;
int ro = 0;
for (i = 0; i < ndr_desc->num_mappings; i++) {
struct nd_mapping *nd_mapping = &ndr_desc->nd_mapping[i];
struct nvdimm *nvdimm = nd_mapping->nvdimm;
if ((nd_mapping->start | nd_mapping->size) % SZ_4K) {
dev_err(&nvdimm_bus->dev, "%s: %s mapping%d is not 4K aligned\n",
caller, dev_name(&nvdimm->dev), i);
return NULL;
}
if (nvdimm->flags & NDD_UNARMED)
ro = 1;
}
if (dev_type == &nd_blk_device_type) {
struct nd_blk_region_desc *ndbr_desc;
struct nd_blk_region *ndbr;
ndbr_desc = to_blk_region_desc(ndr_desc);
ndbr = kzalloc(sizeof(*ndbr) + sizeof(struct nd_mapping)
* ndr_desc->num_mappings,
GFP_KERNEL);
if (ndbr) {
nd_region = &ndbr->nd_region;
ndbr->enable = ndbr_desc->enable;
ndbr->disable = ndbr_desc->disable;
ndbr->do_io = ndbr_desc->do_io;
}
region_buf = ndbr;
} else {
nd_region = kzalloc(sizeof(struct nd_region)
+ sizeof(struct nd_mapping)
* ndr_desc->num_mappings,
GFP_KERNEL);
region_buf = nd_region;
}
if (!region_buf)
return NULL;
nd_region->id = ida_simple_get(®ion_ida, 0, 0, GFP_KERNEL);
if (nd_region->id < 0)
goto err_id;
nd_region->lane = alloc_percpu(struct nd_percpu_lane);
if (!nd_region->lane)
goto err_percpu;
for (i = 0; i < nr_cpu_ids; i++) {
struct nd_percpu_lane *ndl;
ndl = per_cpu_ptr(nd_region->lane, i);
spin_lock_init(&ndl->lock);
ndl->count = 0;
}
memcpy(nd_region->mapping, ndr_desc->nd_mapping,
sizeof(struct nd_mapping) * ndr_desc->num_mappings);
for (i = 0; i < ndr_desc->num_mappings; i++) {
struct nd_mapping *nd_mapping = &ndr_desc->nd_mapping[i];
struct nvdimm *nvdimm = nd_mapping->nvdimm;
get_device(&nvdimm->dev);
}
nd_region->ndr_mappings = ndr_desc->num_mappings;
nd_region->provider_data = ndr_desc->provider_data;
nd_region->nd_set = ndr_desc->nd_set;
nd_region->num_lanes = ndr_desc->num_lanes;
nd_region->flags = ndr_desc->flags;
nd_region->ro = ro;
nd_region->numa_node = ndr_desc->numa_node;
ida_init(&nd_region->ns_ida);
ida_init(&nd_region->btt_ida);
ida_init(&nd_region->pfn_ida);
dev = &nd_region->dev;
dev_set_name(dev, "region%d", nd_region->id);
dev->parent = &nvdimm_bus->dev;
dev->type = dev_type;
dev->groups = ndr_desc->attr_groups;
nd_region->ndr_size = resource_size(ndr_desc->res);
nd_region->ndr_start = ndr_desc->res->start;
nd_device_register(dev);
return nd_region;
err_percpu:
ida_simple_remove(®ion_ida, nd_region->id);
err_id:
kfree(region_buf);
return NULL;
}
void
nouveau_backlight_ctor(void)
{
ida_init(&bl_ida);
}
static int flexrm_mbox_probe(struct platform_device *pdev)
{
int index, ret = 0;
void __iomem *regs;
void __iomem *regs_end;
struct msi_desc *desc;
struct resource *iomem;
struct flexrm_ring *ring;
struct flexrm_mbox *mbox;
struct device *dev = &pdev->dev;
/* Allocate driver mailbox struct */
mbox = devm_kzalloc(dev, sizeof(*mbox), GFP_KERNEL);
if (!mbox) {
ret = -ENOMEM;
goto fail;
}
mbox->dev = dev;
platform_set_drvdata(pdev, mbox);
/* Get resource for registers */
iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!iomem || (resource_size(iomem) < RING_REGS_SIZE)) {
ret = -ENODEV;
goto fail;
}
/* Map registers of all rings */
mbox->regs = devm_ioremap_resource(&pdev->dev, iomem);
if (IS_ERR(mbox->regs)) {
ret = PTR_ERR(mbox->regs);
dev_err(&pdev->dev, "Failed to remap mailbox regs: %d\n", ret);
goto fail;
}
regs_end = mbox->regs + resource_size(iomem);
/* Scan and count available rings */
mbox->num_rings = 0;
for (regs = mbox->regs; regs < regs_end; regs += RING_REGS_SIZE) {
if (readl_relaxed(regs + RING_VER) == RING_VER_MAGIC)
mbox->num_rings++;
}
if (!mbox->num_rings) {
ret = -ENODEV;
goto fail;
}
/* Allocate driver ring structs */
ring = devm_kcalloc(dev, mbox->num_rings, sizeof(*ring), GFP_KERNEL);
if (!ring) {
ret = -ENOMEM;
goto fail;
}
mbox->rings = ring;
/* Initialize members of driver ring structs */
regs = mbox->regs;
for (index = 0; index < mbox->num_rings; index++) {
ring = &mbox->rings[index];
ring->num = index;
ring->mbox = mbox;
while ((regs < regs_end) &&
(readl_relaxed(regs + RING_VER) != RING_VER_MAGIC))
regs += RING_REGS_SIZE;
if (regs_end <= regs) {
ret = -ENODEV;
goto fail;
}
ring->regs = regs;
regs += RING_REGS_SIZE;
ring->irq = UINT_MAX;
ring->irq_requested = false;
ring->msi_timer_val = MSI_TIMER_VAL_MASK;
ring->msi_count_threshold = 0x1;
ida_init(&ring->requests_ida);
memset(ring->requests, 0, sizeof(ring->requests));
ring->bd_base = NULL;
ring->bd_dma_base = 0;
ring->cmpl_base = NULL;
ring->cmpl_dma_base = 0;
spin_lock_init(&ring->lock);
ring->last_pending_msg = NULL;
ring->cmpl_read_offset = 0;
}
/* FlexRM is capable of 40-bit physical addresses only */
ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40));
if (ret) {
ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
if (ret)
goto fail;
}
/* Create DMA pool for ring BD memory */
mbox->bd_pool = dma_pool_create("bd", dev, RING_BD_SIZE,
1 << RING_BD_ALIGN_ORDER, 0);
if (!mbox->bd_pool) {
ret = -ENOMEM;
goto fail;
}
/* Create DMA pool for ring completion memory */
mbox->cmpl_pool = dma_pool_create("cmpl", dev, RING_CMPL_SIZE,
1 << RING_CMPL_ALIGN_ORDER, 0);
if (!mbox->cmpl_pool) {
ret = -ENOMEM;
goto fail_destroy_bd_pool;
}
/* Allocate platform MSIs for each ring */
ret = platform_msi_domain_alloc_irqs(dev, mbox->num_rings,
flexrm_mbox_msi_write);
if (ret)
goto fail_destroy_cmpl_pool;
/* Save alloced IRQ numbers for each ring */
for_each_msi_entry(desc, dev) {
ring = &mbox->rings[desc->platform.msi_index];
ring->irq = desc->irq;
}
static int __init w1_ds2781_init(void)
{
ida_init(&bat_ida);
return w1_register_family(&w1_ds2781_family);
}
static int henry_drv_probe(struct see_client *clnt)
{
int ret = 0;
struct henry_drv *drv = NULL;
drv = kzalloc(sizeof(struct henry_drv), GFP_KERNEL);
if (!drv)
return -ENOMEM;
ret = alloc_chrdev_region(&drv->dev_num, 0, 1, HENRY_DEV);
if (ret < 0)
return ret;
cdev_init(&drv->cdev, &g_henry_fops);
drv->cdev.owner = THIS_MODULE;
ret = cdev_add(&drv->cdev, drv->dev_num, 1);
if (ret < 0)
goto out;
drv->dev_class = class_create(THIS_MODULE, HENRY_CLASS);
if (IS_ERR_OR_NULL(drv->dev_class)) {
ret = PTR_ERR(drv->dev_class);
goto out;
}
drv->dev = device_create(drv->dev_class, NULL, drv->dev_num, drv,
HENRY_DEV);
if (IS_ERR_OR_NULL(drv->dev)) {
ret = PTR_ERR(drv->dev);
goto out;
}
mutex_init(&drv->mutex);
drv->num_exist = 0;
drv->debug_mode = 0;
ida_init(&drv->sess_ida);
dev_set_drvdata(&clnt->dev, drv);
henry_sysfs_create(drv);
henry_dbgfs_create(drv);
dev_info(&clnt->dev, "HENRY driver probed\n");
out:
if (unlikely(ret)) {
if (drv->dev_class) {
/* device_create */
device_destroy(drv->dev_class, drv->dev_num);
/* cdev_add */
cdev_del(&drv->cdev);
/* class_create */
class_destroy(drv->dev_class);
/* alloc_chrdev_region */
unregister_chrdev_region(drv->dev_num, 1);
}
kfree(drv);
}
return ret;
}
static int
ida_pci_attach(device_t dev)
{
struct ida_board *board = ida_pci_match(dev);
u_int32_t id = pci_get_devid(dev);
struct ida_softc *ida;
u_int command;
int error, rid;
command = pci_read_config(dev, PCIR_COMMAND, 1);
/*
* it appears that this board only does MEMIO access.
*/
if ((command & PCIM_CMD_MEMEN) == 0) {
device_printf(dev, "Only memory mapped I/O is supported\n");
return (ENXIO);
}
ida = (struct ida_softc *)device_get_softc(dev);
ida->dev = dev;
ida->cmd = *board->accessor;
ida->flags = board->flags;
ida->regs_res_type = SYS_RES_MEMORY;
ida->regs_res_id = IDA_PCI_MEMADDR;
if (id == IDA_DEVICEID_DEC_SMART)
ida->regs_res_id = PCIR_BAR(0);
ida->regs = bus_alloc_resource_any(dev, ida->regs_res_type,
&ida->regs_res_id, RF_ACTIVE);
if (ida->regs == NULL) {
device_printf(dev, "can't allocate memory resources\n");
return (ENOMEM);
}
error = bus_dma_tag_create(
/* parent */ NULL,
/* alignment */ 1,
/* boundary */ 0,
/* lowaddr */ BUS_SPACE_MAXADDR_32BIT,
/* highaddr */ BUS_SPACE_MAXADDR,
/* filter */ NULL,
/* filterarg */ NULL,
/* maxsize */ MAXBSIZE,
/* nsegments */ IDA_NSEG,
/* maxsegsize */ BUS_SPACE_MAXSIZE_32BIT,
/* flags */ BUS_DMA_ALLOCNOW,
/* lockfunc */ NULL,
/* lockarg */ NULL,
&ida->parent_dmat);
if (error != 0) {
device_printf(dev, "can't allocate DMA tag\n");
ida_free(ida);
return (ENOMEM);
}
rid = 0;
ida->irq_res_type = SYS_RES_IRQ;
ida->irq = bus_alloc_resource_any(dev, ida->irq_res_type, &rid,
RF_ACTIVE | RF_SHAREABLE);
if (ida->irq == NULL) {
ida_free(ida);
return (ENOMEM);
}
error = bus_setup_intr(dev, ida->irq, INTR_TYPE_BIO | INTR_ENTROPY,
NULL, ida_intr, ida, &ida->ih);
if (error) {
device_printf(dev, "can't setup interrupt\n");
ida_free(ida);
return (ENOMEM);
}
error = ida_init(ida);
if (error) {
ida_free(ida);
return (error);
}
ida_attach(ida);
ida->flags |= IDA_ATTACHED;
return (0);
}
static int __init ipack_init(void)
{
ida_init(&ipack_ida);
return bus_register(&ipack_bus_type);
}
int __init gb_hd_init(void)
{
ida_init(&gb_hd_bus_id_map);
return 0;
}
struct gb_host_device *gb_hd_create(struct gb_hd_driver *driver,
struct device *parent,
size_t buffer_size_max,
size_t num_cports)
{
struct gb_host_device *hd;
int ret;
/*
* Validate that the driver implements all of the callbacks
* so that we don't have to every time we make them.
*/
if ((!driver->message_send) || (!driver->message_cancel)) {
pr_err("Must implement all gb_hd_driver callbacks!\n");
return ERR_PTR(-EINVAL);
}
if (buffer_size_max < GB_OPERATION_MESSAGE_SIZE_MIN) {
dev_err(parent, "greybus host-device buffers too small\n");
return ERR_PTR(-EINVAL);
}
if (num_cports == 0 || num_cports > CPORT_ID_MAX + 1) {
dev_err(parent, "Invalid number of CPorts: %zu\n", num_cports);
return ERR_PTR(-EINVAL);
}
/*
* Make sure to never allocate messages larger than what the Greybus
* protocol supports.
*/
if (buffer_size_max > GB_OPERATION_MESSAGE_SIZE_MAX) {
dev_warn(parent, "limiting buffer size to %u\n",
GB_OPERATION_MESSAGE_SIZE_MAX);
buffer_size_max = GB_OPERATION_MESSAGE_SIZE_MAX;
}
hd = kzalloc(sizeof(*hd) + driver->hd_priv_size, GFP_KERNEL);
if (!hd)
return ERR_PTR(-ENOMEM);
ret = ida_simple_get(&gb_hd_bus_id_map, 1, 0, GFP_KERNEL);
if (ret < 0) {
kfree(hd);
return ERR_PTR(ret);
}
hd->bus_id = ret;
hd->driver = driver;
INIT_LIST_HEAD(&hd->interfaces);
INIT_LIST_HEAD(&hd->connections);
ida_init(&hd->cport_id_map);
hd->buffer_size_max = buffer_size_max;
hd->num_cports = num_cports;
hd->dev.parent = parent;
hd->dev.bus = &greybus_bus_type;
hd->dev.type = &greybus_hd_type;
hd->dev.dma_mask = hd->dev.parent->dma_mask;
device_initialize(&hd->dev);
dev_set_name(&hd->dev, "greybus%d", hd->bus_id);
hd->svc = gb_svc_create(hd);
if (!hd->svc) {
dev_err(&hd->dev, "failed to create svc\n");
put_device(&hd->dev);
return ERR_PTR(-ENOMEM);
}
return hd;
}
