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/usb/musb/musbhsdma.h | 161 ++++++++++++++++++++++++++++++++++++ 1 file changed, 161 insertions(+) create mode 100644 kernel/drivers/usb/musb/musbhsdma.h (limited to 'kernel/drivers/usb/musb/musbhsdma.h') diff --git a/kernel/drivers/usb/musb/musbhsdma.h b/kernel/drivers/usb/musb/musbhsdma.h new file mode 100644 index 000000000..f7b13fd25 --- /dev/null +++ b/kernel/drivers/usb/musb/musbhsdma.h @@ -0,0 +1,161 @@ +/* + * MUSB OTG driver - support for Mentor's DMA controller + * + * Copyright 2005 Mentor Graphics Corporation + * Copyright (C) 2005-2007 by Texas Instruments + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef CONFIG_BLACKFIN + +#define MUSB_HSDMA_BASE 0x200 +#define MUSB_HSDMA_INTR (MUSB_HSDMA_BASE + 0) +#define MUSB_HSDMA_CONTROL 0x4 +#define MUSB_HSDMA_ADDRESS 0x8 +#define MUSB_HSDMA_COUNT 0xc + +#define MUSB_HSDMA_CHANNEL_OFFSET(_bchannel, _offset) \ + (MUSB_HSDMA_BASE + (_bchannel << 4) + _offset) + +#define musb_read_hsdma_addr(mbase, bchannel) \ + musb_readl(mbase, \ + MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_ADDRESS)) + +#define musb_write_hsdma_addr(mbase, bchannel, addr) \ + musb_writel(mbase, \ + MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_ADDRESS), \ + addr) + +#define musb_read_hsdma_count(mbase, bchannel) \ + musb_readl(mbase, \ + MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT)) + +#define musb_write_hsdma_count(mbase, bchannel, len) \ + musb_writel(mbase, \ + MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT), \ + len) +#else + +#define MUSB_HSDMA_BASE 0x400 +#define MUSB_HSDMA_INTR (MUSB_HSDMA_BASE + 0) +#define MUSB_HSDMA_CONTROL 0x04 +#define MUSB_HSDMA_ADDR_LOW 0x08 +#define MUSB_HSDMA_ADDR_HIGH 0x0C +#define MUSB_HSDMA_COUNT_LOW 0x10 +#define MUSB_HSDMA_COUNT_HIGH 0x14 + +#define MUSB_HSDMA_CHANNEL_OFFSET(_bchannel, _offset) \ + (MUSB_HSDMA_BASE + (_bchannel * 0x20) + _offset) + +static inline u32 musb_read_hsdma_addr(void __iomem *mbase, u8 bchannel) +{ + u32 addr = musb_readw(mbase, + MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_ADDR_HIGH)); + + addr = addr << 16; + + addr |= musb_readw(mbase, + MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_ADDR_LOW)); + + return addr; +} + +static inline void musb_write_hsdma_addr(void __iomem *mbase, + u8 bchannel, dma_addr_t dma_addr) +{ + musb_writew(mbase, + MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_ADDR_LOW), + dma_addr); + musb_writew(mbase, + MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_ADDR_HIGH), + (dma_addr >> 16)); +} + +static inline u32 musb_read_hsdma_count(void __iomem *mbase, u8 bchannel) +{ + u32 count = musb_readw(mbase, + MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT_HIGH)); + + count = count << 16; + + count |= musb_readw(mbase, + MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT_LOW)); + + return count; +} + +static inline void musb_write_hsdma_count(void __iomem *mbase, + u8 bchannel, u32 len) +{ + musb_writew(mbase, + MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT_LOW),len); + musb_writew(mbase, + MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT_HIGH), + (len >> 16)); +} + +#endif /* CONFIG_BLACKFIN */ + +/* control register (16-bit): */ +#define MUSB_HSDMA_ENABLE_SHIFT 0 +#define MUSB_HSDMA_TRANSMIT_SHIFT 1 +#define MUSB_HSDMA_MODE1_SHIFT 2 +#define MUSB_HSDMA_IRQENABLE_SHIFT 3 +#define MUSB_HSDMA_ENDPOINT_SHIFT 4 +#define MUSB_HSDMA_BUSERROR_SHIFT 8 +#define MUSB_HSDMA_BURSTMODE_SHIFT 9 +#define MUSB_HSDMA_BURSTMODE (3 << MUSB_HSDMA_BURSTMODE_SHIFT) +#define MUSB_HSDMA_BURSTMODE_UNSPEC 0 +#define MUSB_HSDMA_BURSTMODE_INCR4 1 +#define MUSB_HSDMA_BURSTMODE_INCR8 2 +#define MUSB_HSDMA_BURSTMODE_INCR16 3 + +#define MUSB_HSDMA_CHANNELS 8 + +struct musb_dma_controller; + +struct musb_dma_channel { + struct dma_channel channel; + struct musb_dma_controller *controller; + u32 start_addr; + u32 len; + u16 max_packet_sz; + u8 idx; + u8 epnum; + u8 transmit; +}; + +struct musb_dma_controller { + struct dma_controller controller; + struct musb_dma_channel channel[MUSB_HSDMA_CHANNELS]; + void *private_data; + void __iomem *base; + u8 channel_count; + u8 used_channels; + u8 irq; +}; -- cgit 1.2.3-korg