From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/net/ethernet/ti/davinci_cpdma.h | 117 +++++++++++++++++++++++++ 1 file changed, 117 insertions(+) create mode 100644 kernel/drivers/net/ethernet/ti/davinci_cpdma.h (limited to 'kernel/drivers/net/ethernet/ti/davinci_cpdma.h') diff --git a/kernel/drivers/net/ethernet/ti/davinci_cpdma.h b/kernel/drivers/net/ethernet/ti/davinci_cpdma.h new file mode 100644 index 000000000..86dee487f --- /dev/null +++ b/kernel/drivers/net/ethernet/ti/davinci_cpdma.h @@ -0,0 +1,117 @@ +/* + * 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) + +#define CPDMA_RX_SOURCE_PORT(__status__) ((__status__ >> 16) & 0x7) + +#define CPDMA_EOI_RX_THRESH 0x0 +#define CPDMA_EOI_RX 0x1 +#define CPDMA_EOI_TX 0x2 +#define CPDMA_EOI_MISC 0x3 + +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; + u32 desc_hw_addr; + 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, int directed); +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, u32 value); +int cpdma_chan_int_ctrl(struct cpdma_chan *chan, bool enable); +bool cpdma_check_free_tx_desc(struct cpdma_chan *chan); + +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 -- cgit 1.2.3-korg