diff options
author | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-02-22 17:04:41 -0500 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-02-22 17:04:41 -0500 |
commit | 61b80086a525c8a6081257ae40da5dee2bcaee16 (patch) | |
tree | 675da35e4c03be3a5ca17bf6430e5b51dfed6296 /arch/arm/mach-bcmring/include | |
parent | a5f17d1f4c2831b9b9bf8b1a537cdbac995d6e13 (diff) | |
parent | 230f984662d7e0e4a9597c665fd4f53130666e7d (diff) |
Merge branch 'entry-macro-cleanup' of git://sources.calxeda.com/kernel/linux into for-armsoc
Diffstat (limited to 'arch/arm/mach-bcmring/include')
-rw-r--r-- | arch/arm/mach-bcmring/include/mach/dma.h | 196 | ||||
-rw-r--r-- | arch/arm/mach-bcmring/include/mach/entry-macro.S | 6 |
2 files changed, 0 insertions, 202 deletions
diff --git a/arch/arm/mach-bcmring/include/mach/dma.h b/arch/arm/mach-bcmring/include/mach/dma.h index 1f2c5319c056..72543781207b 100644 --- a/arch/arm/mach-bcmring/include/mach/dma.h +++ b/arch/arm/mach-bcmring/include/mach/dma.h | |||
@@ -26,15 +26,9 @@ | |||
26 | /* ---- Include Files ---------------------------------------------------- */ | 26 | /* ---- Include Files ---------------------------------------------------- */ |
27 | 27 | ||
28 | #include <linux/kernel.h> | 28 | #include <linux/kernel.h> |
29 | #include <linux/wait.h> | ||
30 | #include <linux/semaphore.h> | 29 | #include <linux/semaphore.h> |
31 | #include <csp/dmacHw.h> | 30 | #include <csp/dmacHw.h> |
32 | #include <mach/timer.h> | 31 | #include <mach/timer.h> |
33 | #include <linux/scatterlist.h> | ||
34 | #include <linux/dma-mapping.h> | ||
35 | #include <linux/mm.h> | ||
36 | #include <linux/vmalloc.h> | ||
37 | #include <linux/pagemap.h> | ||
38 | 32 | ||
39 | /* ---- Constants and Types ---------------------------------------------- */ | 33 | /* ---- Constants and Types ---------------------------------------------- */ |
40 | 34 | ||
@@ -113,78 +107,6 @@ typedef struct { | |||
113 | 107 | ||
114 | /**************************************************************************** | 108 | /**************************************************************************** |
115 | * | 109 | * |
116 | * The DMA_MemType_t and DMA_MemMap_t are helper structures used to setup | ||
117 | * DMA chains from a variety of memory sources. | ||
118 | * | ||
119 | *****************************************************************************/ | ||
120 | |||
121 | #define DMA_MEM_MAP_MIN_SIZE 4096 /* Pages less than this size are better */ | ||
122 | /* off not being DMA'd. */ | ||
123 | |||
124 | typedef enum { | ||
125 | DMA_MEM_TYPE_NONE, /* Not a valid setting */ | ||
126 | DMA_MEM_TYPE_VMALLOC, /* Memory came from vmalloc call */ | ||
127 | DMA_MEM_TYPE_KMALLOC, /* Memory came from kmalloc call */ | ||
128 | DMA_MEM_TYPE_DMA, /* Memory came from dma_alloc_xxx call */ | ||
129 | DMA_MEM_TYPE_USER, /* Memory came from user space. */ | ||
130 | |||
131 | } DMA_MemType_t; | ||
132 | |||
133 | /* A segment represents a physically and virtually contiguous chunk of memory. */ | ||
134 | /* i.e. each segment can be DMA'd */ | ||
135 | /* A user of the DMA code will add memory regions. Each region may need to be */ | ||
136 | /* represented by one or more segments. */ | ||
137 | |||
138 | typedef struct { | ||
139 | void *virtAddr; /* Virtual address used for this segment */ | ||
140 | dma_addr_t physAddr; /* Physical address this segment maps to */ | ||
141 | size_t numBytes; /* Size of the segment, in bytes */ | ||
142 | |||
143 | } DMA_Segment_t; | ||
144 | |||
145 | /* A region represents a virtually contiguous chunk of memory, which may be */ | ||
146 | /* made up of multiple segments. */ | ||
147 | |||
148 | typedef struct { | ||
149 | DMA_MemType_t memType; | ||
150 | void *virtAddr; | ||
151 | size_t numBytes; | ||
152 | |||
153 | /* Each region (virtually contiguous) consists of one or more segments. Each */ | ||
154 | /* segment is virtually and physically contiguous. */ | ||
155 | |||
156 | int numSegmentsUsed; | ||
157 | int numSegmentsAllocated; | ||
158 | DMA_Segment_t *segment; | ||
159 | |||
160 | /* When a region corresponds to user memory, we need to lock all of the pages */ | ||
161 | /* down before we can figure out the physical addresses. The lockedPage array contains */ | ||
162 | /* the pages that were locked, and which subsequently need to be unlocked once the */ | ||
163 | /* memory is unmapped. */ | ||
164 | |||
165 | unsigned numLockedPages; | ||
166 | struct page **lockedPages; | ||
167 | |||
168 | } DMA_Region_t; | ||
169 | |||
170 | typedef struct { | ||
171 | int inUse; /* Is this mapping currently being used? */ | ||
172 | struct semaphore lock; /* Acquired when using this structure */ | ||
173 | enum dma_data_direction dir; /* Direction this transfer is intended for */ | ||
174 | |||
175 | /* In the event that we're mapping user memory, we need to know which task */ | ||
176 | /* the memory is for, so that we can obtain the correct mm locks. */ | ||
177 | |||
178 | struct task_struct *userTask; | ||
179 | |||
180 | int numRegionsUsed; | ||
181 | int numRegionsAllocated; | ||
182 | DMA_Region_t *region; | ||
183 | |||
184 | } DMA_MemMap_t; | ||
185 | |||
186 | /**************************************************************************** | ||
187 | * | ||
188 | * The DMA_DeviceAttribute_t contains information which describes a | 110 | * The DMA_DeviceAttribute_t contains information which describes a |
189 | * particular DMA device (or peripheral). | 111 | * particular DMA device (or peripheral). |
190 | * | 112 | * |
@@ -570,124 +492,6 @@ int dma_alloc_double_dst_descriptors(DMA_Handle_t handle, /* DMA Handle */ | |||
570 | 492 | ||
571 | /****************************************************************************/ | 493 | /****************************************************************************/ |
572 | /** | 494 | /** |
573 | * Initializes a DMA_MemMap_t data structure | ||
574 | */ | ||
575 | /****************************************************************************/ | ||
576 | |||
577 | int dma_init_mem_map(DMA_MemMap_t *memMap /* Stores state information about the map */ | ||
578 | ); | ||
579 | |||
580 | /****************************************************************************/ | ||
581 | /** | ||
582 | * Releases any memory currently being held by a memory mapping structure. | ||
583 | */ | ||
584 | /****************************************************************************/ | ||
585 | |||
586 | int dma_term_mem_map(DMA_MemMap_t *memMap /* Stores state information about the map */ | ||
587 | ); | ||
588 | |||
589 | /****************************************************************************/ | ||
590 | /** | ||
591 | * Looks at a memory address and categorizes it. | ||
592 | * | ||
593 | * @return One of the values from the DMA_MemType_t enumeration. | ||
594 | */ | ||
595 | /****************************************************************************/ | ||
596 | |||
597 | DMA_MemType_t dma_mem_type(void *addr); | ||
598 | |||
599 | /****************************************************************************/ | ||
600 | /** | ||
601 | * Sets the process (aka userTask) associated with a mem map. This is | ||
602 | * required if user-mode segments will be added to the mapping. | ||
603 | */ | ||
604 | /****************************************************************************/ | ||
605 | |||
606 | static inline void dma_mem_map_set_user_task(DMA_MemMap_t *memMap, | ||
607 | struct task_struct *task) | ||
608 | { | ||
609 | memMap->userTask = task; | ||
610 | } | ||
611 | |||
612 | /****************************************************************************/ | ||
613 | /** | ||
614 | * Looks at a memory address and determines if we support DMA'ing to/from | ||
615 | * that type of memory. | ||
616 | * | ||
617 | * @return boolean - | ||
618 | * return value != 0 means dma supported | ||
619 | * return value == 0 means dma not supported | ||
620 | */ | ||
621 | /****************************************************************************/ | ||
622 | |||
623 | int dma_mem_supports_dma(void *addr); | ||
624 | |||
625 | /****************************************************************************/ | ||
626 | /** | ||
627 | * Initializes a memory map for use. Since this function acquires a | ||
628 | * sempaphore within the memory map, it is VERY important that dma_unmap | ||
629 | * be called when you're finished using the map. | ||
630 | */ | ||
631 | /****************************************************************************/ | ||
632 | |||
633 | int dma_map_start(DMA_MemMap_t *memMap, /* Stores state information about the map */ | ||
634 | enum dma_data_direction dir /* Direction that the mapping will be going */ | ||
635 | ); | ||
636 | |||
637 | /****************************************************************************/ | ||
638 | /** | ||
639 | * Adds a segment of memory to a memory map. | ||
640 | * | ||
641 | * @return 0 on success, error code otherwise. | ||
642 | */ | ||
643 | /****************************************************************************/ | ||
644 | |||
645 | int dma_map_add_region(DMA_MemMap_t *memMap, /* Stores state information about the map */ | ||
646 | void *mem, /* Virtual address that we want to get a map of */ | ||
647 | size_t numBytes /* Number of bytes being mapped */ | ||
648 | ); | ||
649 | |||
650 | /****************************************************************************/ | ||
651 | /** | ||
652 | * Creates a descriptor ring from a memory mapping. | ||
653 | * | ||
654 | * @return 0 on success, error code otherwise. | ||
655 | */ | ||
656 | /****************************************************************************/ | ||
657 | |||
658 | int dma_map_create_descriptor_ring(DMA_Device_t dev, /* DMA device (where the ring is stored) */ | ||
659 | DMA_MemMap_t *memMap, /* Memory map that will be used */ | ||
660 | dma_addr_t devPhysAddr /* Physical address of device */ | ||
661 | ); | ||
662 | |||
663 | /****************************************************************************/ | ||
664 | /** | ||
665 | * Maps in a memory region such that it can be used for performing a DMA. | ||
666 | * | ||
667 | * @return | ||
668 | */ | ||
669 | /****************************************************************************/ | ||
670 | |||
671 | int dma_map_mem(DMA_MemMap_t *memMap, /* Stores state information about the map */ | ||
672 | void *addr, /* Virtual address that we want to get a map of */ | ||
673 | size_t count, /* Number of bytes being mapped */ | ||
674 | enum dma_data_direction dir /* Direction that the mapping will be going */ | ||
675 | ); | ||
676 | |||
677 | /****************************************************************************/ | ||
678 | /** | ||
679 | * Maps in a memory region such that it can be used for performing a DMA. | ||
680 | * | ||
681 | * @return | ||
682 | */ | ||
683 | /****************************************************************************/ | ||
684 | |||
685 | int dma_unmap(DMA_MemMap_t *memMap, /* Stores state information about the map */ | ||
686 | int dirtied /* non-zero if any of the pages were modified */ | ||
687 | ); | ||
688 | |||
689 | /****************************************************************************/ | ||
690 | /** | ||
691 | * Initiates a transfer when the descriptors have already been setup. | 495 | * Initiates a transfer when the descriptors have already been setup. |
692 | * | 496 | * |
693 | * This is a special case, and normally, the dma_transfer_xxx functions should | 497 | * This is a special case, and normally, the dma_transfer_xxx functions should |
diff --git a/arch/arm/mach-bcmring/include/mach/entry-macro.S b/arch/arm/mach-bcmring/include/mach/entry-macro.S index 94c950d783ba..2f316f0e6e69 100644 --- a/arch/arm/mach-bcmring/include/mach/entry-macro.S +++ b/arch/arm/mach-bcmring/include/mach/entry-macro.S | |||
@@ -21,9 +21,6 @@ | |||
21 | #include <mach/hardware.h> | 21 | #include <mach/hardware.h> |
22 | #include <mach/csp/mm_io.h> | 22 | #include <mach/csp/mm_io.h> |
23 | 23 | ||
24 | .macro disable_fiq | ||
25 | .endm | ||
26 | |||
27 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp | 24 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
28 | ldr \base, =(MM_IO_BASE_INTC0) | 25 | ldr \base, =(MM_IO_BASE_INTC0) |
29 | ldr \irqstat, [\base, #0] @ get status | 26 | ldr \irqstat, [\base, #0] @ get status |
@@ -77,6 +74,3 @@ | |||
77 | 74 | ||
78 | .macro get_irqnr_preamble, base, tmp | 75 | .macro get_irqnr_preamble, base, tmp |
79 | .endm | 76 | .endm |
80 | |||
81 | .macro arch_ret_to_user, tmp1, tmp2 | ||
82 | .endm | ||