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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-29 18:34:57 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-29 18:34:57 -0400
commitef08e78268423fc4d7fbc3e54bd9a67fc8da7cc5 (patch)
treed0561d3ef89c9cd277a38168e33850666cbd33c4 /arch/arm/include
parent71db34fc4330f7c784397acb9f1e6ee7f7b32eb2 (diff)
parent5b2e02e401deb44e7f5befe19404d8b2688efea4 (diff)
Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine update from Vinod Koul: "This includes the cookie cleanup by Russell, the addition of context parameter for dmaengine APIs, more arm dmaengine driver cleanup by moving code to dmaengine, this time for imx by Javier and pl330 by Boojin along with the usual driver fixes." Fix up some fairly trivial conflicts with various other cleanups. * 'next' of git://git.infradead.org/users/vkoul/slave-dma: (67 commits) dmaengine: imx: fix the build failure on x86_64 dmaengine: i.MX: Fix merge of cookie branch. dmaengine: i.MX: Add support for interleaved transfers. dmaengine: imx-dma: use 'dev_dbg' and 'dev_warn' for messages. dmaengine: imx-dma: remove 'imx_dmav1_baseaddr' and 'dma_clk'. dmaengine: imx-dma: remove unused arg of imxdma_sg_next. dmaengine: imx-dma: remove internal structure. dmaengine: imx-dma: remove 'resbytes' field of 'internal' structure. dmaengine: imx-dma: remove 'in_use' field of 'internal' structure. dmaengine: imx-dma: remove sg member from internal structure. dmaengine: imx-dma: remove 'imxdma_setup_sg_hw' function. dmaengine: imx-dma: remove 'imxdma_config_channel_hw' function. dmaengine: imx-dma: remove 'imxdma_setup_mem2mem_hw' function. dmaengine: imx-dma: remove dma_mode member of internal structure. dmaengine: imx-dma: remove data member from internal structure. dmaengine: imx-dma: merge old dma-v1.c with imx-dma.c dmaengine: at_hdmac: add slave config operation dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic dmaengine/dma_slave: introduce inline wrappers dma: imx-sdma: Treat firmware messages as warnings instead of erros ...
Diffstat (limited to 'arch/arm/include')
-rw-r--r--arch/arm/include/asm/hardware/iop_adma.h2
-rw-r--r--arch/arm/include/asm/hardware/pl330.h217
2 files changed, 0 insertions, 219 deletions
diff --git a/arch/arm/include/asm/hardware/iop_adma.h b/arch/arm/include/asm/hardware/iop_adma.h
index 59b8c3892f76..122f86d8c991 100644
--- a/arch/arm/include/asm/hardware/iop_adma.h
+++ b/arch/arm/include/asm/hardware/iop_adma.h
@@ -49,7 +49,6 @@ struct iop_adma_device {
49/** 49/**
50 * struct iop_adma_chan - internal representation of an ADMA device 50 * struct iop_adma_chan - internal representation of an ADMA device
51 * @pending: allows batching of hardware operations 51 * @pending: allows batching of hardware operations
52 * @completed_cookie: identifier for the most recently completed operation
53 * @lock: serializes enqueue/dequeue operations to the slot pool 52 * @lock: serializes enqueue/dequeue operations to the slot pool
54 * @mmr_base: memory mapped register base 53 * @mmr_base: memory mapped register base
55 * @chain: device chain view of the descriptors 54 * @chain: device chain view of the descriptors
@@ -62,7 +61,6 @@ struct iop_adma_device {
62 */ 61 */
63struct iop_adma_chan { 62struct iop_adma_chan {
64 int pending; 63 int pending;
65 dma_cookie_t completed_cookie;
66 spinlock_t lock; /* protects the descriptor slot pool */ 64 spinlock_t lock; /* protects the descriptor slot pool */
67 void __iomem *mmr_base; 65 void __iomem *mmr_base;
68 struct list_head chain; 66 struct list_head chain;
diff --git a/arch/arm/include/asm/hardware/pl330.h b/arch/arm/include/asm/hardware/pl330.h
deleted file mode 100644
index c1821385abfa..000000000000
--- a/arch/arm/include/asm/hardware/pl330.h
+++ /dev/null
@@ -1,217 +0,0 @@
1/* linux/include/asm/hardware/pl330.h
2 *
3 * Copyright (C) 2010 Samsung Electronics Co. Ltd.
4 * Jaswinder Singh <jassi.brar@samsung.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21#ifndef __PL330_CORE_H
22#define __PL330_CORE_H
23
24#define PL330_MAX_CHAN 8
25#define PL330_MAX_IRQS 32
26#define PL330_MAX_PERI 32
27
28enum pl330_srccachectrl {
29 SCCTRL0 = 0, /* Noncacheable and nonbufferable */
30 SCCTRL1, /* Bufferable only */
31 SCCTRL2, /* Cacheable, but do not allocate */
32 SCCTRL3, /* Cacheable and bufferable, but do not allocate */
33 SINVALID1,
34 SINVALID2,
35 SCCTRL6, /* Cacheable write-through, allocate on reads only */
36 SCCTRL7, /* Cacheable write-back, allocate on reads only */
37};
38
39enum pl330_dstcachectrl {
40 DCCTRL0 = 0, /* Noncacheable and nonbufferable */
41 DCCTRL1, /* Bufferable only */
42 DCCTRL2, /* Cacheable, but do not allocate */
43 DCCTRL3, /* Cacheable and bufferable, but do not allocate */
44 DINVALID1, /* AWCACHE = 0x1000 */
45 DINVALID2,
46 DCCTRL6, /* Cacheable write-through, allocate on writes only */
47 DCCTRL7, /* Cacheable write-back, allocate on writes only */
48};
49
50/* Populated by the PL330 core driver for DMA API driver's info */
51struct pl330_config {
52 u32 periph_id;
53 u32 pcell_id;
54#define DMAC_MODE_NS (1 << 0)
55 unsigned int mode;
56 unsigned int data_bus_width:10; /* In number of bits */
57 unsigned int data_buf_dep:10;
58 unsigned int num_chan:4;
59 unsigned int num_peri:6;
60 u32 peri_ns;
61 unsigned int num_events:6;
62 u32 irq_ns;
63};
64
65/* Handle to the DMAC provided to the PL330 core */
66struct pl330_info {
67 /* Owning device */
68 struct device *dev;
69 /* Size of MicroCode buffers for each channel. */
70 unsigned mcbufsz;
71 /* ioremap'ed address of PL330 registers. */
72 void __iomem *base;
73 /* Client can freely use it. */
74 void *client_data;
75 /* PL330 core data, Client must not touch it. */
76 void *pl330_data;
77 /* Populated by the PL330 core driver during pl330_add */
78 struct pl330_config pcfg;
79 /*
80 * If the DMAC has some reset mechanism, then the
81 * client may want to provide pointer to the method.
82 */
83 void (*dmac_reset)(struct pl330_info *pi);
84};
85
86enum pl330_byteswap {
87 SWAP_NO = 0,
88 SWAP_2,
89 SWAP_4,
90 SWAP_8,
91 SWAP_16,
92};
93
94/**
95 * Request Configuration.
96 * The PL330 core does not modify this and uses the last
97 * working configuration if the request doesn't provide any.
98 *
99 * The Client may want to provide this info only for the
100 * first request and a request with new settings.
101 */
102struct pl330_reqcfg {
103 /* Address Incrementing */
104 unsigned dst_inc:1;
105 unsigned src_inc:1;
106
107 /*
108 * For now, the SRC & DST protection levels
109 * and burst size/length are assumed same.
110 */
111 bool nonsecure;
112 bool privileged;
113 bool insnaccess;
114 unsigned brst_len:5;
115 unsigned brst_size:3; /* in power of 2 */
116
117 enum pl330_dstcachectrl dcctl;
118 enum pl330_srccachectrl scctl;
119 enum pl330_byteswap swap;
120};
121
122/*
123 * One cycle of DMAC operation.
124 * There may be more than one xfer in a request.
125 */
126struct pl330_xfer {
127 u32 src_addr;
128 u32 dst_addr;
129 /* Size to xfer */
130 u32 bytes;
131 /*
132 * Pointer to next xfer in the list.
133 * The last xfer in the req must point to NULL.
134 */
135 struct pl330_xfer *next;
136};
137
138/* The xfer callbacks are made with one of these arguments. */
139enum pl330_op_err {
140 /* The all xfers in the request were success. */
141 PL330_ERR_NONE,
142 /* If req aborted due to global error. */
143 PL330_ERR_ABORT,
144 /* If req failed due to problem with Channel. */
145 PL330_ERR_FAIL,
146};
147
148enum pl330_reqtype {
149 MEMTOMEM,
150 MEMTODEV,
151 DEVTOMEM,
152 DEVTODEV,
153};
154
155/* A request defining Scatter-Gather List ending with NULL xfer. */
156struct pl330_req {
157 enum pl330_reqtype rqtype;
158 /* Index of peripheral for the xfer. */
159 unsigned peri:5;
160 /* Unique token for this xfer, set by the client. */
161 void *token;
162 /* Callback to be called after xfer. */
163 void (*xfer_cb)(void *token, enum pl330_op_err err);
164 /* If NULL, req will be done at last set parameters. */
165 struct pl330_reqcfg *cfg;
166 /* Pointer to first xfer in the request. */
167 struct pl330_xfer *x;
168};
169
170/*
171 * To know the status of the channel and DMAC, the client
172 * provides a pointer to this structure. The PL330 core
173 * fills it with current information.
174 */
175struct pl330_chanstatus {
176 /*
177 * If the DMAC engine halted due to some error,
178 * the client should remove-add DMAC.
179 */
180 bool dmac_halted;
181 /*
182 * If channel is halted due to some error,
183 * the client should ABORT/FLUSH and START the channel.
184 */
185 bool faulting;
186 /* Location of last load */
187 u32 src_addr;
188 /* Location of last store */
189 u32 dst_addr;
190 /*
191 * Pointer to the currently active req, NULL if channel is
192 * inactive, even though the requests may be present.
193 */
194 struct pl330_req *top_req;
195 /* Pointer to req waiting second in the queue if any. */
196 struct pl330_req *wait_req;
197};
198
199enum pl330_chan_op {
200 /* Start the channel */
201 PL330_OP_START,
202 /* Abort the active xfer */
203 PL330_OP_ABORT,
204 /* Stop xfer and flush queue */
205 PL330_OP_FLUSH,
206};
207
208extern int pl330_add(struct pl330_info *);
209extern void pl330_del(struct pl330_info *pi);
210extern int pl330_update(const struct pl330_info *pi);
211extern void pl330_release_channel(void *ch_id);
212extern void *pl330_request_channel(const struct pl330_info *pi);
213extern int pl330_chan_status(void *ch_id, struct pl330_chanstatus *pstatus);
214extern int pl330_chan_ctrl(void *ch_id, enum pl330_chan_op op);
215extern int pl330_submit_req(void *ch_id, struct pl330_req *r);
216
217#endif /* __PL330_CORE_H */