Changeset 35c37fc in mainline for uspace/drv/bus/usb/ehci/endpoint_list.c

Timestamp:

2018-01-05T20:15:08Z (6 years ago)

Author:

Ondřej Hlavatý <aearsis@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

9e5b162

Parents:

b60944b

git-author:

Ondřej Hlavatý <aearsis@…> (2018-01-05 16:11:04)

git-committer:

Ondřej Hlavatý <aearsis@…> (2018-01-05 20:15:08)

Message:

ehci: refactor to dma_buffers

One big hidden thing was refactored - now TDs are allocated in one
buffer together with setup and data buffers themselves. This reduces the
number of allocated pages per transfer to minimum.

File:

• uspace/drv/bus/usb/ehci/endpoint_list.c (modified) (1 diff)

uspace/drv/bus/usb/ehci/endpoint_list.c

@@ -54 +54 @@
         assert(instance);
         instance->name = name;
-        instance->list_head = malloc32(sizeof(qh_t));
-        if (!instance->list_head) {
+        if (dma_buffer_alloc(&instance->dma_buffer, sizeof(qh_t))) {
                 usb_log_error("EPL(%p-%s): Failed to allocate list head.",
                     instance, name);
                 return ENOMEM;
         }
+        instance->list_head = instance->dma_buffer.virt;
         qh_init(instance->list_head, NULL);