From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/include/drm/drm_os_linux.h | 65 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 kernel/include/drm/drm_os_linux.h (limited to 'kernel/include/drm/drm_os_linux.h') diff --git a/kernel/include/drm/drm_os_linux.h b/kernel/include/drm/drm_os_linux.h new file mode 100644 index 000000000..86ab99bc0 --- /dev/null +++ b/kernel/include/drm/drm_os_linux.h @@ -0,0 +1,65 @@ +/** + * \file drm_os_linux.h + * OS abstraction macros. + */ + +#include /* For task queue support */ +#include + +#ifndef readq +static inline u64 readq(void __iomem *reg) +{ + return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32); +} + +static inline void writeq(u64 val, void __iomem *reg) +{ + writel(val & 0xffffffff, reg); + writel(val >> 32, reg + 0x4UL); +} +#endif + +/** Current process ID */ +#define DRM_CURRENTPID task_pid_nr(current) +#define DRM_UDELAY(d) udelay(d) +/** Read a byte from a MMIO region */ +#define DRM_READ8(map, offset) readb(((void __iomem *)(map)->handle) + (offset)) +/** Read a word from a MMIO region */ +#define DRM_READ16(map, offset) readw(((void __iomem *)(map)->handle) + (offset)) +/** Read a dword from a MMIO region */ +#define DRM_READ32(map, offset) readl(((void __iomem *)(map)->handle) + (offset)) +/** Write a byte into a MMIO region */ +#define DRM_WRITE8(map, offset, val) writeb(val, ((void __iomem *)(map)->handle) + (offset)) +/** Write a word into a MMIO region */ +#define DRM_WRITE16(map, offset, val) writew(val, ((void __iomem *)(map)->handle) + (offset)) +/** Write a dword into a MMIO region */ +#define DRM_WRITE32(map, offset, val) writel(val, ((void __iomem *)(map)->handle) + (offset)) + +/** Read a qword from a MMIO region - be careful using these unless you really understand them */ +#define DRM_READ64(map, offset) readq(((void __iomem *)(map)->handle) + (offset)) +/** Write a qword into a MMIO region */ +#define DRM_WRITE64(map, offset, val) writeq(val, ((void __iomem *)(map)->handle) + (offset)) + +#define DRM_WAIT_ON( ret, queue, timeout, condition ) \ +do { \ + DECLARE_WAITQUEUE(entry, current); \ + unsigned long end = jiffies + (timeout); \ + add_wait_queue(&(queue), &entry); \ + \ + for (;;) { \ + __set_current_state(TASK_INTERRUPTIBLE); \ + if (condition) \ + break; \ + if (time_after_eq(jiffies, end)) { \ + ret = -EBUSY; \ + break; \ + } \ + schedule_timeout((HZ/100 > 1) ? HZ/100 : 1); \ + if (signal_pending(current)) { \ + ret = -EINTR; \ + break; \ + } \ + } \ + __set_current_state(TASK_RUNNING); \ + remove_wait_queue(&(queue), &entry); \ +} while (0) -- cgit 1.2.3-korg