10fb52de5SFrançois Tigeot /** 2a85cb24fSFrançois Tigeot * \file drm_os_linux.h 30fb52de5SFrançois Tigeot * OS abstraction macros. 40fb52de5SFrançois Tigeot */ 50fb52de5SFrançois Tigeot 61e59d133SFrançois Tigeot #include <linux/interrupt.h> /* For task queue support */ 7a85cb24fSFrançois Tigeot #include <linux/sched/signal.h> 80e1ba51bSFrançois Tigeot #include <linux/delay.h> 9*3f2dd94aSFrançois Tigeot #include <linux/io-64-nonatomic-lo-hi.h> 10ba55f2f5SFrançois Tigeot 1191fff950Szrj /* Handle the DRM options from kernel config. */ 1291fff950Szrj #ifdef __DragonFly__ 1391fff950Szrj #include "opt_drm.h" 1491fff950Szrj #ifdef DRM_DEBUG 1591fff950Szrj # if DRM_DEBUG>1 1691fff950Szrj # define DRM_DEBUG_DEFAULT_ON 2 1791fff950Szrj # else 1891fff950Szrj # define DRM_DEBUG_DEFAULT_ON 1 1991fff950Szrj # endif 2091fff950Szrj #undef DRM_DEBUG 21ea4aad66SSascha Wildner #else /* !DRM_DEBUG */ 22ea4aad66SSascha Wildner # define DRM_DEBUG_DEFAULT_ON 0 2391fff950Szrj #endif /* DRM_DEBUG */ 24ea4aad66SSascha Wildner #endif /* __DragonFly__ */ 250e1ba51bSFrançois Tigeot 26dbd50cc0Szrj /** Current process ID */ 27dbd50cc0Szrj #define DRM_CURRENTPID (curproc != NULL ? curproc->p_pid : -1) 28dbd50cc0Szrj #define DRM_UDELAY(d) DELAY(d) 29dbd50cc0Szrj /** Read a byte from a MMIO region */ 300e1ba51bSFrançois Tigeot #define DRM_READ8(map, offset) readb(((void __iomem *)(map)->handle) + (offset)) 310e1ba51bSFrançois Tigeot /** Read a word from a MMIO region */ 320e1ba51bSFrançois Tigeot #define DRM_READ16(map, offset) readw(((void __iomem *)(map)->handle) + (offset)) 330e1ba51bSFrançois Tigeot /** Read a dword from a MMIO region */ 340e1ba51bSFrançois Tigeot #define DRM_READ32(map, offset) readl(((void __iomem *)(map)->handle) + (offset)) 350e1ba51bSFrançois Tigeot /** Write a byte into a MMIO region */ 360e1ba51bSFrançois Tigeot #define DRM_WRITE8(map, offset, val) writeb(val, ((void __iomem *)(map)->handle) + (offset)) 370e1ba51bSFrançois Tigeot /** Write a word into a MMIO region */ 380e1ba51bSFrançois Tigeot #define DRM_WRITE16(map, offset, val) writew(val, ((void __iomem *)(map)->handle) + (offset)) 390e1ba51bSFrançois Tigeot /** Write a dword into a MMIO region */ 40a85cb24fSFrançois Tigeot #define DRM_WRITE32(map, offset, val) writel(val, ((void __iomem *)(map)->handle) + (offset)) 415c002123SFrançois Tigeot 420e1ba51bSFrançois Tigeot /** Read a qword from a MMIO region - be careful using these unless you really understand them */ 430e1ba51bSFrançois Tigeot #define DRM_READ64(map, offset) readq(((void __iomem *)(map)->handle) + (offset)) 440e1ba51bSFrançois Tigeot /** Write a qword into a MMIO region */ 450e1ba51bSFrançois Tigeot #define DRM_WRITE64(map, offset, val) writeq(val, ((void __iomem *)(map)->handle) + (offset)) 460fb52de5SFrançois Tigeot 471dedbd3bSFrançois Tigeot #define DRM_WAIT_ON( ret, queue, timeout, condition ) \ 481dedbd3bSFrançois Tigeot do { \ 49*3f2dd94aSFrançois Tigeot wait_queue_entry_t entry = { \ 509e6332eeSFrançois Tigeot .private = current, \ 519e6332eeSFrançois Tigeot .func = default_wake_function, \ 529e6332eeSFrançois Tigeot }; \ 531dedbd3bSFrançois Tigeot unsigned long end = jiffies + (timeout); \ 541dedbd3bSFrançois Tigeot add_wait_queue(&(queue), &entry); \ 551dedbd3bSFrançois Tigeot \ 561dedbd3bSFrançois Tigeot for (;;) { \ 571dedbd3bSFrançois Tigeot __set_current_state(TASK_INTERRUPTIBLE); \ 581dedbd3bSFrançois Tigeot if (condition) \ 591dedbd3bSFrançois Tigeot break; \ 601dedbd3bSFrançois Tigeot if (time_after_eq(jiffies, end)) { \ 611dedbd3bSFrançois Tigeot ret = -EBUSY; \ 621dedbd3bSFrançois Tigeot break; \ 631dedbd3bSFrançois Tigeot } \ 641dedbd3bSFrançois Tigeot schedule_timeout((HZ/100 > 1) ? HZ/100 : 1); \ 651dedbd3bSFrançois Tigeot if (signal_pending(current)) { \ 661dedbd3bSFrançois Tigeot ret = -EINTR; \ 671dedbd3bSFrançois Tigeot break; \ 681dedbd3bSFrançois Tigeot } \ 691dedbd3bSFrançois Tigeot } \ 701dedbd3bSFrançois Tigeot __set_current_state(TASK_RUNNING); \ 711dedbd3bSFrançois Tigeot remove_wait_queue(&(queue), &entry); \ 721dedbd3bSFrançois Tigeot } while (0) 73