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authorSuren A. Chilingaryan <csa@suren.me>2016-03-02 16:03:57 +0100
committerSuren A. Chilingaryan <csa@suren.me>2016-03-02 16:03:57 +0100
commit01e857cca352e73243d00b62a0c248a35cea6b71 (patch)
tree3d603934cecefac55b987286dbb1539a8acc8b16 /driver/sysfs.c
parenteb88dc19b8729fea5dc740e80f6f9d44791570fe (diff)
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Drop support of kernels prior to 3.2 (Debian 7, Ubuntu 12.04)
Diffstat (limited to 'driver/sysfs.c')
-rw-r--r--driver/sysfs.c293
1 files changed, 136 insertions, 157 deletions
diff --git a/driver/sysfs.c b/driver/sysfs.c
index abc1c8a..19865fc 100644
--- a/driver/sysfs.c
+++ b/driver/sysfs.c
@@ -35,46 +35,40 @@ static SYSFS_GET_FUNCTION(pcidriver_show_umem_entry);
*
*/
static int _pcidriver_sysfs_initialize(pcidriver_privdata_t *privdata,
- int id,
- struct class_device_attribute *sysfs_attr,
- const char *fmtstring,
- SYSFS_GET_FUNCTION((*callback)))
+ int id,
+ struct class_device_attribute *sysfs_attr,
+ const char *fmtstring,
+ SYSFS_GET_FUNCTION((*callback)))
{
- /* sysfs attributes for kmem buffers don’t make sense before 2.6.13, as
- we have no mmap support before */
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,13)
- char namebuffer[16];
+ /* sysfs attributes for kmem buffers don’t make sense before 2.6.13, as
+ we have no mmap support before */
+ char namebuffer[16];
- /* allocate space for the name of the attribute */
- snprintf(namebuffer, sizeof(namebuffer), fmtstring, id);
+ /* allocate space for the name of the attribute */
+ snprintf(namebuffer, sizeof(namebuffer), fmtstring, id);
- if ((sysfs_attr->attr.name = kstrdup(namebuffer, GFP_KERNEL)) == NULL)
- return -ENOMEM;
+ if ((sysfs_attr->attr.name = kstrdup(namebuffer, GFP_KERNEL)) == NULL)
+ return -ENOMEM;
- sysfs_attr->attr.mode = S_IRUGO;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
- // DS: Shall we lock now while accessing driver data structures???
- sysfs_attr->attr.owner = THIS_MODULE;
-#endif
- sysfs_attr->show = callback;
- sysfs_attr->store = NULL;
-
- /* name and add attribute */
- if (class_device_create_file(privdata->class_dev, sysfs_attr) != 0)
- return -ENXIO; /* Device not configured. Not the really best choice, but hm. */
-#endif
+ sysfs_attr->attr.mode = S_IRUGO;
+ sysfs_attr->show = callback;
+ sysfs_attr->store = NULL;
- return 0;
+ /* name and add attribute */
+ if (class_device_create_file(privdata->class_dev, sysfs_attr) != 0)
+ return -ENXIO; /* Device not configured. Not the really best choice, but hm. */
+
+ return 0;
}
int pcidriver_sysfs_initialize_kmem(pcidriver_privdata_t *privdata, int id, struct class_device_attribute *sysfs_attr)
{
- return _pcidriver_sysfs_initialize(privdata, id, sysfs_attr, "kbuf%d", pcidriver_show_kmem_entry);
+ return _pcidriver_sysfs_initialize(privdata, id, sysfs_attr, "kbuf%d", pcidriver_show_kmem_entry);
}
int pcidriver_sysfs_initialize_umem(pcidriver_privdata_t *privdata, int id, struct class_device_attribute *sysfs_attr)
{
- return _pcidriver_sysfs_initialize(privdata, id, sysfs_attr, "umem%d", pcidriver_show_umem_entry);
+ return _pcidriver_sysfs_initialize(privdata, id, sysfs_attr, "umem%d", pcidriver_show_umem_entry);
}
/**
@@ -84,225 +78,210 @@ int pcidriver_sysfs_initialize_umem(pcidriver_privdata_t *privdata, int id, stru
*/
void pcidriver_sysfs_remove(pcidriver_privdata_t *privdata, struct class_device_attribute *sysfs_attr)
{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,13)
- class_device_remove_file(privdata->class_dev, sysfs_attr);
- kfree(sysfs_attr->attr.name);
-#endif
+ class_device_remove_file(privdata->class_dev, sysfs_attr);
+ kfree(sysfs_attr->attr.name);
}
static SYSFS_GET_FUNCTION(pcidriver_show_kmem_entry)
{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,13)
- pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
-
- /* As we can be sure that attr.name contains a filename which we
- * created (see _pcidriver_sysfs_initialize), we do not need to have
- * sanity checks but can directly call simple_strtol() */
- int id = simple_strtol(attr->attr.name + strlen("kbuf"), NULL, 10);
- pcidriver_kmem_entry_t *entry = pcidriver_kmem_find_entry_id(privdata, id);
- if (entry) {
- unsigned long addr = entry->cpua;
- unsigned long dma_addr = entry->dma_handle;
-
- if (entry->size >= 16) {
- pcidriver_kmem_sync_entry(privdata, entry, PCILIB_KMEM_SYNC_FROMDEVICE);
- return snprintf(buf, PAGE_SIZE, "buffer: %d\naddr: %lx\nhw addr: %llx\nbus addr: %lx\ntype: %lx\nuse: 0x%lx\nitem: %lu\nsize: %lu\nrefs: %lu\nhw ref: %i\nmode: 0x%lx\ndata: %8x %8x %8x %8x\n", id, addr, virt_to_phys((void*)addr), dma_addr, entry->type, entry->use, entry->item, entry->size, entry->refs&KMEM_REF_COUNT, (entry->refs&KMEM_REF_HW)?1:0, entry->mode, *(u32*)(entry->cpua), *(u32*)(entry->cpua + 4), *(u32*)(entry->cpua + 8), *(u32*)(entry->cpua + 12));
- } else
- return snprintf(buf, PAGE_SIZE, "buffer: %d\naddr: %lx\nhw addr: %llx\nbus addr: %lx\ntype: %lx\nuse: 0x%lx\nitem: %lu\nsize: %lu\nrefs: %lu\nhw ref: %i\nmode: 0x%lx\n", id, addr, virt_to_phys((void*)addr), dma_addr, entry->type, entry->use, entry->item, entry->size, entry->refs&KMEM_REF_COUNT, (entry->refs&KMEM_REF_HW)?1:0, entry->mode);
- } else
- return snprintf(buf, PAGE_SIZE, "I am in the kmem_entry show function for buffer %d\n", id);
-#else
- return 0;
-#endif
+ pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
+
+ /* As we can be sure that attr.name contains a filename which we
+ * created (see _pcidriver_sysfs_initialize), we do not need to have
+ * sanity checks but can directly call simple_strtol() */
+ int id = simple_strtol(attr->attr.name + strlen("kbuf"), NULL, 10);
+ pcidriver_kmem_entry_t *entry = pcidriver_kmem_find_entry_id(privdata, id);
+ if (entry) {
+ unsigned long addr = entry->cpua;
+ unsigned long dma_addr = entry->dma_handle;
+
+ if (entry->size >= 16) {
+ pcidriver_kmem_sync_entry(privdata, entry, PCILIB_KMEM_SYNC_FROMDEVICE);
+ return snprintf(buf, PAGE_SIZE, "buffer: %d\naddr: %lx\nhw addr: %llx\nbus addr: %lx\ntype: %lx\nuse: 0x%lx\nitem: %lu\nsize: %lu\nrefs: %lu\nhw ref: %i\nmode: 0x%lx\ndata: %8x %8x %8x %8x\n", id, addr, virt_to_phys((void*)addr), dma_addr, entry->type, entry->use, entry->item, entry->size, entry->refs&KMEM_REF_COUNT, (entry->refs&KMEM_REF_HW)?1:0, entry->mode, *(u32*)(entry->cpua), *(u32*)(entry->cpua + 4), *(u32*)(entry->cpua + 8), *(u32*)(entry->cpua + 12));
+ } else
+ return snprintf(buf, PAGE_SIZE, "buffer: %d\naddr: %lx\nhw addr: %llx\nbus addr: %lx\ntype: %lx\nuse: 0x%lx\nitem: %lu\nsize: %lu\nrefs: %lu\nhw ref: %i\nmode: 0x%lx\n", id, addr, virt_to_phys((void*)addr), dma_addr, entry->type, entry->use, entry->item, entry->size, entry->refs&KMEM_REF_COUNT, (entry->refs&KMEM_REF_HW)?1:0, entry->mode);
+ } else
+ return snprintf(buf, PAGE_SIZE, "I am in the kmem_entry show function for buffer %d\n", id);
}
static SYSFS_GET_FUNCTION(pcidriver_show_umem_entry)
{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,13)
-#if 0
- pcidriver_privdata_t *privdata = (pcidriver_privdata_t *)cls->class_data;
-
- return snprintf(buf, PAGE_SIZE, "I am in the umem_entry show function, class_device_kobj_name: %s\n", cls->kobj.name);
-#endif
- return 0;
-#else
- return 0;
-#endif
+ return 0;
}
#ifdef ENABLE_IRQ
SYSFS_GET_FUNCTION(pcidriver_show_irq_count)
{
- pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
+ pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
- return snprintf(buf, PAGE_SIZE, "%d\n", privdata->irq_count);
+ return snprintf(buf, PAGE_SIZE, "%d\n", privdata->irq_count);
}
SYSFS_GET_FUNCTION(pcidriver_show_irq_queues)
{
- pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
- int i, offset;
+ pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
+ int i, offset;
- /* output will be truncated to PAGE_SIZE */
- offset = snprintf(buf, PAGE_SIZE, "Queue\tOutstanding IRQs\n");
- for (i = 0; i < PCIDRIVER_INT_MAXSOURCES; i++)
- offset += snprintf(buf+offset, PAGE_SIZE-offset, "%d\t%d\n", i, atomic_read(&(privdata->irq_outstanding[i])) );
+ /* output will be truncated to PAGE_SIZE */
+ offset = snprintf(buf, PAGE_SIZE, "Queue\tOutstanding IRQs\n");
+ for (i = 0; i < PCIDRIVER_INT_MAXSOURCES; i++)
+ offset += snprintf(buf+offset, PAGE_SIZE-offset, "%d\t%d\n", i, atomic_read(&(privdata->irq_outstanding[i])) );
- return (offset > PAGE_SIZE ? PAGE_SIZE : offset+1);
+ return (offset > PAGE_SIZE ? PAGE_SIZE : offset+1);
}
#endif
SYSFS_GET_FUNCTION(pcidriver_show_mmap_mode)
{
- pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
+ pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
- return snprintf(buf, PAGE_SIZE, "%d\n", privdata->mmap_mode);
+ return snprintf(buf, PAGE_SIZE, "%d\n", privdata->mmap_mode);
}
SYSFS_SET_FUNCTION(pcidriver_store_mmap_mode)
{
- pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
- int mode = -1;
+ pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
+ int mode = -1;
- /* Set the mmap-mode if it is either PCIDRIVER_MMAP_PCI or PCIDRIVER_MMAP_KMEM */
- if (sscanf(buf, "%d", &mode) == 1 &&
- (mode == PCIDRIVER_MMAP_PCI || mode == PCIDRIVER_MMAP_KMEM))
- privdata->mmap_mode = mode;
+ /* Set the mmap-mode if it is either PCIDRIVER_MMAP_PCI or PCIDRIVER_MMAP_KMEM */
+ if (sscanf(buf, "%d", &mode) == 1 &&
+ (mode == PCIDRIVER_MMAP_PCI || mode == PCIDRIVER_MMAP_KMEM))
+ privdata->mmap_mode = mode;
- return strlen(buf);
+ return strlen(buf);
}
SYSFS_GET_FUNCTION(pcidriver_show_mmap_area)
{
- pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
+ pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
- return snprintf(buf, PAGE_SIZE, "%d\n", privdata->mmap_area);
+ return snprintf(buf, PAGE_SIZE, "%d\n", privdata->mmap_area);
}
SYSFS_SET_FUNCTION(pcidriver_store_mmap_area)
{
- pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
- int temp = -1;
+ pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
+ int temp = -1;
- sscanf(buf, "%d", &temp);
+ sscanf(buf, "%d", &temp);
- if ((temp >= PCIDRIVER_BAR0) && (temp <= PCIDRIVER_BAR5))
- privdata->mmap_area = temp;
+ if ((temp >= PCIDRIVER_BAR0) && (temp <= PCIDRIVER_BAR5))
+ privdata->mmap_area = temp;
- return strlen(buf);
+ return strlen(buf);
}
SYSFS_GET_FUNCTION(pcidriver_show_kmem_count)
{
- pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
+ pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
- return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&(privdata->kmem_count)));
+ return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&(privdata->kmem_count)));
}
SYSFS_SET_FUNCTION(pcidriver_store_kmem_alloc)
{
- pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
- kmem_handle_t kmem_handle;
+ pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
+ kmem_handle_t kmem_handle;
- /* FIXME: guillermo: is validation of parsing an unsigned int enough? */
- if (sscanf(buf, "%lu", &kmem_handle.size) == 1)
- pcidriver_kmem_alloc(privdata, &kmem_handle);
+ /* FIXME: guillermo: is validation of parsing an unsigned int enough? */
+ if (sscanf(buf, "%lu", &kmem_handle.size) == 1)
+ pcidriver_kmem_alloc(privdata, &kmem_handle);
- return strlen(buf);
+ return strlen(buf);
}
SYSFS_SET_FUNCTION(pcidriver_store_kmem_free)
{
- pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
- unsigned int id;
- pcidriver_kmem_entry_t *kmem_entry;
+ pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
+ unsigned int id;
+ pcidriver_kmem_entry_t *kmem_entry;
- /* Parse the ID of the kernel memory to be freed, check bounds */
- if (sscanf(buf, "%u", &id) != 1 ||
- (id >= atomic_read(&(privdata->kmem_count))))
- goto err;
+ /* Parse the ID of the kernel memory to be freed, check bounds */
+ if (sscanf(buf, "%u", &id) != 1 ||
+ (id >= atomic_read(&(privdata->kmem_count))))
+ goto err;
- if ((kmem_entry = pcidriver_kmem_find_entry_id(privdata,id)) == NULL)
- goto err;
+ if ((kmem_entry = pcidriver_kmem_find_entry_id(privdata,id)) == NULL)
+ goto err;
- pcidriver_kmem_free_entry(privdata, kmem_entry );
+ pcidriver_kmem_free_entry(privdata, kmem_entry );
err:
- return strlen(buf);
+ return strlen(buf);
}
SYSFS_GET_FUNCTION(pcidriver_show_kbuffers)
{
- pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
- int offset = 0;
- struct list_head *ptr;
- pcidriver_kmem_entry_t *entry;
+ pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
+ int offset = 0;
+ struct list_head *ptr;
+ pcidriver_kmem_entry_t *entry;
- /* print the header */
- offset += snprintf(buf, PAGE_SIZE, "kbuf#\tcpu addr\tsize\n");
+ /* print the header */
+ offset += snprintf(buf, PAGE_SIZE, "kbuf#\tcpu addr\tsize\n");
- spin_lock(&(privdata->kmemlist_lock));
- list_for_each(ptr, &(privdata->kmem_list)) {
- entry = list_entry(ptr, pcidriver_kmem_entry_t, list);
+ spin_lock(&(privdata->kmemlist_lock));
+ list_for_each(ptr, &(privdata->kmem_list)) {
+ entry = list_entry(ptr, pcidriver_kmem_entry_t, list);
- /* print entry info */
- if (offset > PAGE_SIZE) {
- spin_unlock( &(privdata->kmemlist_lock) );
- return PAGE_SIZE;
- }
+ /* print entry info */
+ if (offset > PAGE_SIZE) {
+ spin_unlock( &(privdata->kmemlist_lock) );
+ return PAGE_SIZE;
+ }
- offset += snprintf(buf+offset, PAGE_SIZE-offset, "%3d\t%08lx\t%lu\n", entry->id, (unsigned long)(entry->dma_handle), entry->size );
- }
+ offset += snprintf(buf+offset, PAGE_SIZE-offset, "%3d\t%08lx\t%lu\n", entry->id, (unsigned long)(entry->dma_handle), entry->size );
+ }
- spin_unlock(&(privdata->kmemlist_lock));
+ spin_unlock(&(privdata->kmemlist_lock));
- /* output will be truncated to PAGE_SIZE */
- return (offset > PAGE_SIZE ? PAGE_SIZE : offset+1);
+ /* output will be truncated to PAGE_SIZE */
+ return (offset > PAGE_SIZE ? PAGE_SIZE : offset+1);
}
SYSFS_GET_FUNCTION(pcidriver_show_umappings)
{
- int offset = 0;
- pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
- struct list_head *ptr;
- pcidriver_umem_entry_t *entry;
+ int offset = 0;
+ pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
+ struct list_head *ptr;
+ pcidriver_umem_entry_t *entry;
- /* print the header */
- offset += snprintf(buf, PAGE_SIZE, "umap#\tn_pages\tsg_ents\n");
+ /* print the header */
+ offset += snprintf(buf, PAGE_SIZE, "umap#\tn_pages\tsg_ents\n");
- spin_lock( &(privdata->umemlist_lock) );
- list_for_each( ptr, &(privdata->umem_list) ) {
- entry = list_entry(ptr, pcidriver_umem_entry_t, list );
+ spin_lock( &(privdata->umemlist_lock) );
+ list_for_each( ptr, &(privdata->umem_list) ) {
+ entry = list_entry(ptr, pcidriver_umem_entry_t, list );
- /* print entry info */
- if (offset > PAGE_SIZE) {
- spin_unlock( &(privdata->umemlist_lock) );
- return PAGE_SIZE;
- }
+ /* print entry info */
+ if (offset > PAGE_SIZE) {
+ spin_unlock( &(privdata->umemlist_lock) );
+ return PAGE_SIZE;
+ }
- offset += snprintf(buf+offset, PAGE_SIZE-offset, "%3d\t%lu\t%lu\n", entry->id,
- (unsigned long)(entry->nr_pages), (unsigned long)(entry->nents));
- }
+ offset += snprintf(buf+offset, PAGE_SIZE-offset, "%3d\t%lu\t%lu\n", entry->id,
+ (unsigned long)(entry->nr_pages), (unsigned long)(entry->nents));
+ }
- spin_unlock( &(privdata->umemlist_lock) );
+ spin_unlock( &(privdata->umemlist_lock) );
- /* output will be truncated to PAGE_SIZE */
- return (offset > PAGE_SIZE ? PAGE_SIZE : offset+1);
+ /* output will be truncated to PAGE_SIZE */
+ return (offset > PAGE_SIZE ? PAGE_SIZE : offset+1);
}
SYSFS_SET_FUNCTION(pcidriver_store_umem_unmap)
{
- pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
- pcidriver_umem_entry_t *umem_entry;
- unsigned int id;
+ pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA;
+ pcidriver_umem_entry_t *umem_entry;
+ unsigned int id;
- if (sscanf(buf, "%u", &id) != 1 ||
- (id >= atomic_read(&(privdata->umem_count))))
- goto err;
+ if (sscanf(buf, "%u", &id) != 1 ||
+ (id >= atomic_read(&(privdata->umem_count))))
+ goto err;
- if ((umem_entry = pcidriver_umem_find_entry_id(privdata, id)) == NULL)
- goto err;
+ if ((umem_entry = pcidriver_umem_find_entry_id(privdata, id)) == NULL)
+ goto err;
- pcidriver_umem_sgunmap(privdata, umem_entry);
+ pcidriver_umem_sgunmap(privdata, umem_entry);
err:
- return strlen(buf);
+ return strlen(buf);
}