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#
# Copyright (C) 2013 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk

ARCH:=mips64
BOARD:=octeon
BOARDNAME:=Cavium Networks Octeon
FEATURES:=squashfs jffs2 ext4 pci usb
CPU_TYPE:=octeon
CPU_CFLAGS_octeon:=-march=octeon -mabi=64
MAINTAINER:=John Crispin <blogic@openwrt.org>

LINUX_VERSION:=3.10.44

include $(INCLUDE_DIR)/target.mk


define Target/Description
	Build firmware images for Cavium Networks Octeon-based boards.
endef

$(eval $(call BuildTarget))
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-28 14:09:50 +0000
: Thu, 15 Jan 2015 17:56:02 -0800 Subject: [PATCH] spi: qup: Ensure done detection This patch fixes an issue where a SPI transaction has completed, but the done condition is missed. This occurs because at the time of interrupt the MAX_INPUT_DONE_FLAG is not asserted. However, in the process of reading blocks of data from the FIFO, the last portion of data comes in. The opflags read at the beginning of the irq handler no longer matches the current opflag state. To get around this condition, the block read function should update the opflags so that done detection is correct after the return. Change-Id: If109e0eeb432f96000d765c4b34dbb2269f8093f Signed-off-by: Andy Gross <agross@codeaurora.org> --- drivers/spi/spi-qup.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) --- a/drivers/spi/spi-qup.c +++ b/drivers/spi/spi-qup.c @@ -298,7 +298,7 @@ static void spi_qup_fifo_write(struct sp } static void spi_qup_block_read(struct spi_qup *controller, - struct spi_transfer *xfer) + struct spi_transfer *xfer, u32 *opflags) { u32 data; u32 reads_per_blk = controller->in_blk_sz >> 2; @@ -327,10 +327,12 @@ static void spi_qup_block_read(struct sp /* * Due to extra stickiness of the QUP_OP_IN_SERVICE_FLAG during block - * reads, it has to be cleared again at the very end + * reads, it has to be cleared again at the very end. However, be sure + * to refresh opflags value because MAX_INPUT_DONE_FLAG may now be + * present and this is used to determine if transaction is complete */ - if (readl_relaxed(controller->base + QUP_OPERATIONAL) & - QUP_OP_MAX_INPUT_DONE_FLAG) + *opflags = readl_relaxed(controller->base + QUP_OPERATIONAL); + if (*opflags & QUP_OP_MAX_INPUT_DONE_FLAG) writel_relaxed(QUP_OP_IN_SERVICE_FLAG, controller->base + QUP_OPERATIONAL); @@ -633,7 +635,7 @@ static irqreturn_t spi_qup_qup_irq(int i if (!controller->use_dma) { if (opflags & QUP_OP_IN_SERVICE_FLAG) { if (opflags & QUP_OP_IN_BLOCK_READ_REQ) - spi_qup_block_read(controller, xfer); + spi_qup_block_read(controller, xfer, &opflags); else spi_qup_fifo_read(controller, xfer); }
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-28 14:09:50 +0000