| 2,11 → 2,11 |
|---|
| <chapter id="hardware"> |
| <?dbhtml filename="hardware.html"?> |
| |
| <title>Device drivers</title> |
| <title>Device Drivers</title> |
| |
| <para>Since HelenOS is a microkernel, a framework for supporting userspace |
| device drivers has been implemented. A typical userspace task acting as a |
| device driver might need to: </para> |
| device driver might need to:</para> |
| |
| <itemizedlist> |
| <listitem> |
| 27,7 → 27,7 |
|---|
| </itemizedlist> |
| |
| <section> |
| <title>Interrupt notifications</title> |
| <title>Interrupt Notifications</title> |
| |
| <para>Userspace tasks that are in hold of the |
| <constant>CAP_IRQ_REG</constant> capability can register themselves via |
| 53,7 → 53,7 |
|---|
| </section> |
| |
| <section> |
| <title>Accessing memory and I/O space</title> |
| <title>Accessing Memory and I/O Space</title> |
| |
| <para>When a task has the <constant>CAP_MEM_MANAGER</constant> capability, |
| it can use the <constant>SYS_MAP_PHYSMEM</constant> to map regions of |
| 68,7 → 68,7 |
|---|
| </section> |
| |
| <section> |
| <title>Disabling preemption</title> |
| <title>Disabling Preemption</title> |
| |
| <para>It might be desirable for a device driver to temporarily disable |
| preemption. Tasks that can do this are required to have the |