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author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-12-07 15:48:15 -0500 |
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committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-12-07 15:48:15 -0500 |
commit | 34161db6b14d984fb9b06c735b7b42f8803f6851 (patch) | |
tree | 99656278b6697f1cde5b05894b7c0ee22c63a00e /include/asm-sh/dma.h | |
parent | 5847e1f4d058677c5e46dc6c3e3c70e8855ea3ba (diff) | |
parent | 620034c84d1d939717bdfbe02c51a3fee43541c3 (diff) |
Merge branch 'master' of /home/trondmy/kernel/linux-2.6/ into merge_linus
Conflicts:
include/linux/sunrpc/xprt.h
net/sunrpc/xprtsock.c
Fix up conflicts with the workqueue changes.
Diffstat (limited to 'include/asm-sh/dma.h')
-rw-r--r-- | include/asm-sh/dma.h | 40 |
1 files changed, 29 insertions, 11 deletions
diff --git a/include/asm-sh/dma.h b/include/asm-sh/dma.h index d9daa028689f..faf3051cd429 100644 --- a/include/asm-sh/dma.h +++ b/include/asm-sh/dma.h | |||
@@ -14,9 +14,7 @@ | |||
14 | #include <linux/spinlock.h> | 14 | #include <linux/spinlock.h> |
15 | #include <linux/wait.h> | 15 | #include <linux/wait.h> |
16 | #include <linux/sysdev.h> | 16 | #include <linux/sysdev.h> |
17 | #include <linux/device.h> | ||
18 | #include <asm/cpu/dma.h> | 17 | #include <asm/cpu/dma.h> |
19 | #include <asm/semaphore.h> | ||
20 | 18 | ||
21 | /* The maximum address that we can perform a DMA transfer to on this platform */ | 19 | /* The maximum address that we can perform a DMA transfer to on this platform */ |
22 | /* Don't define MAX_DMA_ADDRESS; it's useless on the SuperH and any | 20 | /* Don't define MAX_DMA_ADDRESS; it's useless on the SuperH and any |
@@ -46,16 +44,21 @@ | |||
46 | * DMAC (dma_info) flags | 44 | * DMAC (dma_info) flags |
47 | */ | 45 | */ |
48 | enum { | 46 | enum { |
49 | DMAC_CHANNELS_CONFIGURED = 0x00, | 47 | DMAC_CHANNELS_CONFIGURED = 0x01, |
50 | DMAC_CHANNELS_TEI_CAPABLE = 0x01, | 48 | DMAC_CHANNELS_TEI_CAPABLE = 0x02, /* Transfer end interrupt */ |
51 | }; | 49 | }; |
52 | 50 | ||
53 | /* | 51 | /* |
54 | * DMA channel capabilities / flags | 52 | * DMA channel capabilities / flags |
55 | */ | 53 | */ |
56 | enum { | 54 | enum { |
57 | DMA_TEI_CAPABLE = 0x01, | 55 | DMA_CONFIGURED = 0x01, |
58 | DMA_CONFIGURED = 0x02, | 56 | |
57 | /* | ||
58 | * Transfer end interrupt, inherited from DMAC. | ||
59 | * wait_queue used in dma_wait_for_completion. | ||
60 | */ | ||
61 | DMA_TEI_CAPABLE = 0x02, | ||
59 | }; | 62 | }; |
60 | 63 | ||
61 | extern spinlock_t dma_spin_lock; | 64 | extern spinlock_t dma_spin_lock; |
@@ -68,28 +71,31 @@ struct dma_ops { | |||
68 | 71 | ||
69 | int (*get_residue)(struct dma_channel *chan); | 72 | int (*get_residue)(struct dma_channel *chan); |
70 | int (*xfer)(struct dma_channel *chan); | 73 | int (*xfer)(struct dma_channel *chan); |
71 | void (*configure)(struct dma_channel *chan, unsigned long flags); | 74 | int (*configure)(struct dma_channel *chan, unsigned long flags); |
75 | int (*extend)(struct dma_channel *chan, unsigned long op, void *param); | ||
72 | }; | 76 | }; |
73 | 77 | ||
74 | struct dma_channel { | 78 | struct dma_channel { |
75 | char dev_id[16]; | 79 | char dev_id[16]; /* unique name per DMAC of channel */ |
76 | 80 | ||
77 | unsigned int chan; /* Physical channel number */ | 81 | unsigned int chan; /* DMAC channel number */ |
78 | unsigned int vchan; /* Virtual channel number */ | 82 | unsigned int vchan; /* Virtual channel number */ |
83 | |||
79 | unsigned int mode; | 84 | unsigned int mode; |
80 | unsigned int count; | 85 | unsigned int count; |
81 | 86 | ||
82 | unsigned long sar; | 87 | unsigned long sar; |
83 | unsigned long dar; | 88 | unsigned long dar; |
84 | 89 | ||
90 | const char **caps; | ||
91 | |||
85 | unsigned long flags; | 92 | unsigned long flags; |
86 | atomic_t busy; | 93 | atomic_t busy; |
87 | 94 | ||
88 | struct semaphore sem; | ||
89 | wait_queue_head_t wait_queue; | 95 | wait_queue_head_t wait_queue; |
90 | 96 | ||
91 | struct sys_device dev; | 97 | struct sys_device dev; |
92 | char *name; | 98 | void *priv_data; |
93 | }; | 99 | }; |
94 | 100 | ||
95 | struct dma_info { | 101 | struct dma_info { |
@@ -103,6 +109,12 @@ struct dma_info { | |||
103 | struct dma_channel *channels; | 109 | struct dma_channel *channels; |
104 | 110 | ||
105 | struct list_head list; | 111 | struct list_head list; |
112 | int first_channel_nr; | ||
113 | }; | ||
114 | |||
115 | struct dma_chan_caps { | ||
116 | int ch_num; | ||
117 | const char **caplist; | ||
106 | }; | 118 | }; |
107 | 119 | ||
108 | #define to_dma_channel(channel) container_of(channel, struct dma_channel, dev) | 120 | #define to_dma_channel(channel) container_of(channel, struct dma_channel, dev) |
@@ -121,6 +133,8 @@ extern int dma_xfer(unsigned int chan, unsigned long from, | |||
121 | #define dma_read_page(chan, from, to) \ | 133 | #define dma_read_page(chan, from, to) \ |
122 | dma_read(chan, from, to, PAGE_SIZE) | 134 | dma_read(chan, from, to, PAGE_SIZE) |
123 | 135 | ||
136 | extern int request_dma_bycap(const char **dmac, const char **caps, | ||
137 | const char *dev_id); | ||
124 | extern int request_dma(unsigned int chan, const char *dev_id); | 138 | extern int request_dma(unsigned int chan, const char *dev_id); |
125 | extern void free_dma(unsigned int chan); | 139 | extern void free_dma(unsigned int chan); |
126 | extern int get_dma_residue(unsigned int chan); | 140 | extern int get_dma_residue(unsigned int chan); |
@@ -131,6 +145,10 @@ extern void dma_configure_channel(unsigned int chan, unsigned long flags); | |||
131 | 145 | ||
132 | extern int register_dmac(struct dma_info *info); | 146 | extern int register_dmac(struct dma_info *info); |
133 | extern void unregister_dmac(struct dma_info *info); | 147 | extern void unregister_dmac(struct dma_info *info); |
148 | extern struct dma_info *get_dma_info_by_name(const char *dmac_name); | ||
149 | |||
150 | extern int dma_extend(unsigned int chan, unsigned long op, void *param); | ||
151 | extern int register_chan_caps(const char *dmac, struct dma_chan_caps *capslist); | ||
134 | 152 | ||
135 | #ifdef CONFIG_SYSFS | 153 | #ifdef CONFIG_SYSFS |
136 | /* arch/sh/drivers/dma/dma-sysfs.c */ | 154 | /* arch/sh/drivers/dma/dma-sysfs.c */ |