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author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-25 10:59:31 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-25 10:59:31 -0700 |
commit | 72e58063d63c5f0a7bf65312f1e3a5ed9bb5c2ff (patch) | |
tree | df5c21244d46aacef47e6b7fff3ad02c3612b15c /drivers/net/davinci_cpdma.h | |
parent | 57c155d51e2f3d7411eeac5e7fd7634d2d1f6b4f (diff) | |
parent | 489e176c71f36654dcb8835926f7e5717b8b4c19 (diff) |
Merge branch 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci
* 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci: (50 commits)
davinci: fix remaining board support after io_pgoffst removal
davinci: mityomapl138: make file local data static
arm/davinci: remove duplicated include
davinci: Initial support for Omapl138-Hawkboard
davinci: MityDSP-L138/MityARM-1808 read MAC address from I2C Prom
davinci: add tnetv107x touchscreen platform device
input: add driver for tnetv107x touchscreen controller
davinci: add keypad config for tnetv107x evm board
davinci: add tnetv107x keypad platform device
input: add driver for tnetv107x on-chip keypad controller
net: davinci_emac: cleanup unused cpdma code
net: davinci_emac: switch to new cpdma layer
net: davinci_emac: separate out cpdma code
net: davinci_emac: cleanup unused mdio emac code
omap: cleanup unused davinci mdio arch code
davinci: cleanup mdio arch code and switch to phy_id
net: davinci_emac: switch to new mdio
omap: add mdio platform devices
davinci: add mdio platform devices
net: davinci_emac: separate out davinci mdio
...
Fix up trivial conflict in drivers/input/keyboard/Kconfig (two entries
added next to each other - one from the davinci merge, one from the
input merge)
Diffstat (limited to 'drivers/net/davinci_cpdma.h')
-rw-r--r-- | drivers/net/davinci_cpdma.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/drivers/net/davinci_cpdma.h b/drivers/net/davinci_cpdma.h new file mode 100644 index 00000000000..868e50ebde4 --- /dev/null +++ b/drivers/net/davinci_cpdma.h @@ -0,0 +1,108 @@ +/* + * Texas Instruments CPDMA Driver + * + * Copyright (C) 2010 Texas Instruments + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#ifndef __DAVINCI_CPDMA_H__ +#define __DAVINCI_CPDMA_H__ + +#define CPDMA_MAX_CHANNELS BITS_PER_LONG + +#define tx_chan_num(chan) (chan) +#define rx_chan_num(chan) ((chan) + CPDMA_MAX_CHANNELS) +#define is_rx_chan(chan) ((chan)->chan_num >= CPDMA_MAX_CHANNELS) +#define is_tx_chan(chan) (!is_rx_chan(chan)) +#define __chan_linear(chan_num) ((chan_num) & (CPDMA_MAX_CHANNELS - 1)) +#define chan_linear(chan) __chan_linear((chan)->chan_num) + +struct cpdma_params { + struct device *dev; + void __iomem *dmaregs; + void __iomem *txhdp, *rxhdp, *txcp, *rxcp; + void __iomem *rxthresh, *rxfree; + int num_chan; + bool has_soft_reset; + int min_packet_size; + u32 desc_mem_phys; + int desc_mem_size; + int desc_align; + + /* + * Some instances of embedded cpdma controllers have extra control and + * status registers. The following flag enables access to these + * "extended" registers. + */ + bool has_ext_regs; +}; + +struct cpdma_chan_stats { + u32 head_enqueue; + u32 tail_enqueue; + u32 pad_enqueue; + u32 misqueued; + u32 desc_alloc_fail; + u32 pad_alloc_fail; + u32 runt_receive_buff; + u32 runt_transmit_buff; + u32 empty_dequeue; + u32 busy_dequeue; + u32 good_dequeue; + u32 requeue; + u32 teardown_dequeue; +}; + +struct cpdma_ctlr; +struct cpdma_chan; + +typedef void (*cpdma_handler_fn)(void *token, int len, int status); + +struct cpdma_ctlr *cpdma_ctlr_create(struct cpdma_params *params); +int cpdma_ctlr_destroy(struct cpdma_ctlr *ctlr); +int cpdma_ctlr_start(struct cpdma_ctlr *ctlr); +int cpdma_ctlr_stop(struct cpdma_ctlr *ctlr); +int cpdma_ctlr_dump(struct cpdma_ctlr *ctlr); + +struct cpdma_chan *cpdma_chan_create(struct cpdma_ctlr *ctlr, int chan_num, + cpdma_handler_fn handler); +int cpdma_chan_destroy(struct cpdma_chan *chan); +int cpdma_chan_start(struct cpdma_chan *chan); +int cpdma_chan_stop(struct cpdma_chan *chan); +int cpdma_chan_dump(struct cpdma_chan *chan); + +int cpdma_chan_get_stats(struct cpdma_chan *chan, + struct cpdma_chan_stats *stats); +int cpdma_chan_submit(struct cpdma_chan *chan, void *token, void *data, + int len, gfp_t gfp_mask); +int cpdma_chan_process(struct cpdma_chan *chan, int quota); + +int cpdma_ctlr_int_ctrl(struct cpdma_ctlr *ctlr, bool enable); +void cpdma_ctlr_eoi(struct cpdma_ctlr *ctlr); +int cpdma_chan_int_ctrl(struct cpdma_chan *chan, bool enable); + +enum cpdma_control { + CPDMA_CMD_IDLE, /* write-only */ + CPDMA_COPY_ERROR_FRAMES, /* read-write */ + CPDMA_RX_OFF_LEN_UPDATE, /* read-write */ + CPDMA_RX_OWNERSHIP_FLIP, /* read-write */ + CPDMA_TX_PRIO_FIXED, /* read-write */ + CPDMA_STAT_IDLE, /* read-only */ + CPDMA_STAT_TX_ERR_CHAN, /* read-only */ + CPDMA_STAT_TX_ERR_CODE, /* read-only */ + CPDMA_STAT_RX_ERR_CHAN, /* read-only */ + CPDMA_STAT_RX_ERR_CODE, /* read-only */ + CPDMA_RX_BUFFER_OFFSET, /* read-write */ +}; + +int cpdma_control_get(struct cpdma_ctlr *ctlr, int control); +int cpdma_control_set(struct cpdma_ctlr *ctlr, int control, int value); + +#endif |