diff options
author | Andrea Bastoni <bastoni@cs.unc.edu> | 2010-05-30 19:16:45 -0400 |
---|---|---|
committer | Andrea Bastoni <bastoni@cs.unc.edu> | 2010-05-30 19:16:45 -0400 |
commit | ada47b5fe13d89735805b566185f4885f5a3f750 (patch) | |
tree | 644b88f8a71896307d71438e9b3af49126ffb22b /arch/alpha/include/asm/pci.h | |
parent | 43e98717ad40a4ae64545b5ba047c7b86aa44f4f (diff) | |
parent | 3280f21d43ee541f97f8cda5792150d2dbec20d5 (diff) |
Merge branch 'wip-2.6.34' into old-private-masterarchived-private-master
Diffstat (limited to 'arch/alpha/include/asm/pci.h')
-rw-r--r-- | arch/alpha/include/asm/pci.h | 139 |
1 files changed, 3 insertions, 136 deletions
diff --git a/arch/alpha/include/asm/pci.h b/arch/alpha/include/asm/pci.h index dd8dcabf160f..28d0497fd3c7 100644 --- a/arch/alpha/include/asm/pci.h +++ b/arch/alpha/include/asm/pci.h | |||
@@ -70,142 +70,11 @@ extern inline void pcibios_penalize_isa_irq(int irq, int active) | |||
70 | decisions. */ | 70 | decisions. */ |
71 | #define PCI_DMA_BUS_IS_PHYS 0 | 71 | #define PCI_DMA_BUS_IS_PHYS 0 |
72 | 72 | ||
73 | /* Allocate and map kernel buffer using consistent mode DMA for PCI | 73 | #ifdef CONFIG_PCI |
74 | device. Returns non-NULL cpu-view pointer to the buffer if | ||
75 | successful and sets *DMA_ADDRP to the pci side dma address as well, | ||
76 | else DMA_ADDRP is undefined. */ | ||
77 | |||
78 | extern void *__pci_alloc_consistent(struct pci_dev *, size_t, | ||
79 | dma_addr_t *, gfp_t); | ||
80 | static inline void * | ||
81 | pci_alloc_consistent(struct pci_dev *dev, size_t size, dma_addr_t *dma) | ||
82 | { | ||
83 | return __pci_alloc_consistent(dev, size, dma, GFP_ATOMIC); | ||
84 | } | ||
85 | |||
86 | /* Free and unmap a consistent DMA buffer. CPU_ADDR and DMA_ADDR must | ||
87 | be values that were returned from pci_alloc_consistent. SIZE must | ||
88 | be the same as what as passed into pci_alloc_consistent. | ||
89 | References to the memory and mappings associated with CPU_ADDR or | ||
90 | DMA_ADDR past this call are illegal. */ | ||
91 | |||
92 | extern void pci_free_consistent(struct pci_dev *, size_t, void *, dma_addr_t); | ||
93 | |||
94 | /* Map a single buffer of the indicate size for PCI DMA in streaming mode. | ||
95 | The 32-bit PCI bus mastering address to use is returned. Once the device | ||
96 | is given the dma address, the device owns this memory until either | ||
97 | pci_unmap_single or pci_dma_sync_single_for_cpu is performed. */ | ||
98 | |||
99 | extern dma_addr_t pci_map_single(struct pci_dev *, void *, size_t, int); | ||
100 | |||
101 | /* Likewise, but for a page instead of an address. */ | ||
102 | extern dma_addr_t pci_map_page(struct pci_dev *, struct page *, | ||
103 | unsigned long, size_t, int); | ||
104 | |||
105 | /* Test for pci_map_single or pci_map_page having generated an error. */ | ||
106 | |||
107 | static inline int | ||
108 | pci_dma_mapping_error(struct pci_dev *pdev, dma_addr_t dma_addr) | ||
109 | { | ||
110 | return dma_addr == 0; | ||
111 | } | ||
112 | |||
113 | /* Unmap a single streaming mode DMA translation. The DMA_ADDR and | ||
114 | SIZE must match what was provided for in a previous pci_map_single | ||
115 | call. All other usages are undefined. After this call, reads by | ||
116 | the cpu to the buffer are guaranteed to see whatever the device | ||
117 | wrote there. */ | ||
118 | |||
119 | extern void pci_unmap_single(struct pci_dev *, dma_addr_t, size_t, int); | ||
120 | extern void pci_unmap_page(struct pci_dev *, dma_addr_t, size_t, int); | ||
121 | |||
122 | /* pci_unmap_{single,page} is not a nop, thus... */ | ||
123 | #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \ | ||
124 | dma_addr_t ADDR_NAME; | ||
125 | #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \ | ||
126 | __u32 LEN_NAME; | ||
127 | #define pci_unmap_addr(PTR, ADDR_NAME) \ | ||
128 | ((PTR)->ADDR_NAME) | ||
129 | #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \ | ||
130 | (((PTR)->ADDR_NAME) = (VAL)) | ||
131 | #define pci_unmap_len(PTR, LEN_NAME) \ | ||
132 | ((PTR)->LEN_NAME) | ||
133 | #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \ | ||
134 | (((PTR)->LEN_NAME) = (VAL)) | ||
135 | |||
136 | /* Map a set of buffers described by scatterlist in streaming mode for | ||
137 | PCI DMA. This is the scatter-gather version of the above | ||
138 | pci_map_single interface. Here the scatter gather list elements | ||
139 | are each tagged with the appropriate PCI dma address and length. | ||
140 | They are obtained via sg_dma_{address,length}(SG). | ||
141 | |||
142 | NOTE: An implementation may be able to use a smaller number of DMA | ||
143 | address/length pairs than there are SG table elements. (for | ||
144 | example via virtual mapping capabilities) The routine returns the | ||
145 | number of addr/length pairs actually used, at most nents. | ||
146 | |||
147 | Device ownership issues as mentioned above for pci_map_single are | ||
148 | the same here. */ | ||
149 | |||
150 | extern int pci_map_sg(struct pci_dev *, struct scatterlist *, int, int); | ||
151 | |||
152 | /* Unmap a set of streaming mode DMA translations. Again, cpu read | ||
153 | rules concerning calls here are the same as for pci_unmap_single() | ||
154 | above. */ | ||
155 | |||
156 | extern void pci_unmap_sg(struct pci_dev *, struct scatterlist *, int, int); | ||
157 | |||
158 | /* Make physical memory consistent for a single streaming mode DMA | ||
159 | translation after a transfer and device currently has ownership | ||
160 | of the buffer. | ||
161 | |||
162 | If you perform a pci_map_single() but wish to interrogate the | ||
163 | buffer using the cpu, yet do not wish to teardown the PCI dma | ||
164 | mapping, you must call this function before doing so. At the next | ||
165 | point you give the PCI dma address back to the card, you must first | ||
166 | perform a pci_dma_sync_for_device, and then the device again owns | ||
167 | the buffer. */ | ||
168 | |||
169 | static inline void | ||
170 | pci_dma_sync_single_for_cpu(struct pci_dev *dev, dma_addr_t dma_addr, | ||
171 | long size, int direction) | ||
172 | { | ||
173 | /* Nothing to do. */ | ||
174 | } | ||
175 | |||
176 | static inline void | ||
177 | pci_dma_sync_single_for_device(struct pci_dev *dev, dma_addr_t dma_addr, | ||
178 | size_t size, int direction) | ||
179 | { | ||
180 | /* Nothing to do. */ | ||
181 | } | ||
182 | |||
183 | /* Make physical memory consistent for a set of streaming mode DMA | ||
184 | translations after a transfer. The same as pci_dma_sync_single_* | ||
185 | but for a scatter-gather list, same rules and usage. */ | ||
186 | |||
187 | static inline void | ||
188 | pci_dma_sync_sg_for_cpu(struct pci_dev *dev, struct scatterlist *sg, | ||
189 | int nents, int direction) | ||
190 | { | ||
191 | /* Nothing to do. */ | ||
192 | } | ||
193 | |||
194 | static inline void | ||
195 | pci_dma_sync_sg_for_device(struct pci_dev *dev, struct scatterlist *sg, | ||
196 | int nents, int direction) | ||
197 | { | ||
198 | /* Nothing to do. */ | ||
199 | } | ||
200 | |||
201 | /* Return whether the given PCI device DMA address mask can | ||
202 | be supported properly. For example, if your device can | ||
203 | only drive the low 24-bits during PCI bus mastering, then | ||
204 | you would pass 0x00ffffff as the mask to this function. */ | ||
205 | 74 | ||
206 | extern int pci_dma_supported(struct pci_dev *hwdev, u64 mask); | 75 | /* implement the pci_ DMA API in terms of the generic device dma_ one */ |
76 | #include <asm-generic/pci-dma-compat.h> | ||
207 | 77 | ||
208 | #ifdef CONFIG_PCI | ||
209 | static inline void pci_dma_burst_advice(struct pci_dev *pdev, | 78 | static inline void pci_dma_burst_advice(struct pci_dev *pdev, |
210 | enum pci_dma_burst_strategy *strat, | 79 | enum pci_dma_burst_strategy *strat, |
211 | unsigned long *strategy_parameter) | 80 | unsigned long *strategy_parameter) |
@@ -244,8 +113,6 @@ static inline int pci_proc_domain(struct pci_bus *bus) | |||
244 | return hose->need_domain_info; | 113 | return hose->need_domain_info; |
245 | } | 114 | } |
246 | 115 | ||
247 | struct pci_dev *alpha_gendev_to_pci(struct device *dev); | ||
248 | |||
249 | #endif /* __KERNEL__ */ | 116 | #endif /* __KERNEL__ */ |
250 | 117 | ||
251 | /* Values for the `which' argument to sys_pciconfig_iobase. */ | 118 | /* Values for the `which' argument to sys_pciconfig_iobase. */ |