1 /** 2 * \file drm_os_dragonfly.h 3 * OS abstraction macros. 4 */ 5 6 #include <sys/param.h> 7 #include <sys/endian.h> 8 #include <sys/systm.h> 9 #include <sys/serialize.h> 10 #include <linux/interrupt.h> /* For task queue support */ 11 #include <linux/delay.h> 12 13 /* Handle the DRM options from kernel config. */ 14 #ifdef __DragonFly__ 15 #include "opt_drm.h" 16 #ifdef DRM_DEBUG 17 # if DRM_DEBUG>1 18 # define DRM_DEBUG_DEFAULT_ON 2 19 # else 20 # define DRM_DEBUG_DEFAULT_ON 1 21 # endif 22 #undef DRM_DEBUG 23 #endif /* DRM_DEBUG */ 24 #endif /* DragonFly */ 25 26 #ifndef readq 27 static inline u64 readq(void __iomem *reg) 28 { 29 return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32); 30 } 31 32 static inline void writeq(u64 val, void __iomem *reg) 33 { 34 writel(val & 0xffffffff, reg); 35 writel(val >> 32, reg + 0x4UL); 36 } 37 #endif 38 39 /** Current process ID */ 40 #define DRM_CURRENTPID (curproc != NULL ? curproc->p_pid : -1) 41 #define DRM_UDELAY(d) DELAY(d) 42 /** Read a byte from a MMIO region */ 43 #define DRM_READ8(map, offset) readb(((void __iomem *)(map)->handle) + (offset)) 44 /** Read a word from a MMIO region */ 45 #define DRM_READ16(map, offset) readw(((void __iomem *)(map)->handle) + (offset)) 46 /** Read a dword from a MMIO region */ 47 #define DRM_READ32(map, offset) readl(((void __iomem *)(map)->handle) + (offset)) 48 /** Write a byte into a MMIO region */ 49 #define DRM_WRITE8(map, offset, val) writeb(val, ((void __iomem *)(map)->handle) + (offset)) 50 /** Write a word into a MMIO region */ 51 #define DRM_WRITE16(map, offset, val) writew(val, ((void __iomem *)(map)->handle) + (offset)) 52 /** Write a dword into a MMIO region */ 53 #define DRM_WRITE32(map, offset, val) \ 54 *(volatile u_int32_t *)(((vm_offset_t)(map)->handle) + \ 55 (vm_offset_t)(offset)) = htole32(val) 56 57 /** Read a qword from a MMIO region - be careful using these unless you really understand them */ 58 #define DRM_READ64(map, offset) readq(((void __iomem *)(map)->handle) + (offset)) 59 /** Write a qword into a MMIO region */ 60 #define DRM_WRITE64(map, offset, val) writeq(val, ((void __iomem *)(map)->handle) + (offset)) 61 62 #define DRM_WAIT_ON( ret, queue, timeout, condition ) \ 63 for ( ret = 0 ; !ret && !(condition) ; ) { \ 64 lwkt_serialize_enter(&dev->irq_lock); \ 65 if (!(condition)) { \ 66 tsleep_interlock(&(queue), PCATCH); \ 67 lwkt_serialize_exit(&dev->irq_lock); \ 68 ret = -tsleep(&(queue), PCATCH | PINTERLOCKED, \ 69 "drmwtq", (timeout)); \ 70 } else { \ 71 lwkt_serialize_exit(&dev->irq_lock); \ 72 } \ 73 } 74 75 /* include code to override EDID blocks from external firmware modules */ 76 #define CONFIG_DRM_LOAD_EDID_FIRMWARE 77