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Message-ID: <202210020307.F3Jn1mnh-lkp@intel.com>
Date: Sun, 2 Oct 2022 04:08:04 +0800
From: kernel test robot <lkp@...el.com>
To: Krishna Yarlagadda <kyarlagadda@...dia.com>, broonie@...nel.org,
thierry.reding@...il.com, jonathanh@...dia.com,
linux-spi@...r.kernel.org, linux-tegra@...r.kernel.org
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
skomatineni@...dia.com, ldewangan@...dia.com,
linux-kernel@...r.kernel.org,
Krishna Yarlagadda <kyarlagadda@...dia.com>
Subject: Re: [PATCH 5/5] spi: tegra210-quad: native dma support
Hi Krishna,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on broonie-spi/for-next]
[also build test WARNING on linus/master v6.0-rc7 next-20220930]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Krishna-Yarlagadda/spi-tegra210-quad-Fix-combined-sequence/20221001-202349
base: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next
config: hexagon-randconfig-r045-20220925
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/1c7e26dac0d8ad5c5cb6f42d07a57b943b369185
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Krishna-Yarlagadda/spi-tegra210-quad-Fix-combined-sequence/20221001-202349
git checkout 1c7e26dac0d8ad5c5cb6f42d07a57b943b369185
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/spi/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
>> drivers/spi/spi-tegra210-quad.c:669:42: warning: shift count >= width of type [-Wshift-count-overflow]
tegra_qspi_writel(tqspi, ((tx_dma_phys >> 32) & 0xff),
^ ~~
drivers/spi/spi-tegra210-quad.c:696:42: warning: shift count >= width of type [-Wshift-count-overflow]
tegra_qspi_writel(tqspi, ((rx_dma_phys >> 32) & 0xff),
^ ~~
2 warnings generated.
vim +669 drivers/spi/spi-tegra210-quad.c
614
615 static int tegra_qspi_start_dma_based_transfer(struct tegra_qspi *tqspi, struct spi_transfer *t)
616 {
617 struct dma_slave_config dma_sconfig = { 0 };
618 dma_addr_t rx_dma_phys, tx_dma_phys;
619 unsigned int len;
620 u8 dma_burst;
621 int ret = 0;
622 u32 val;
623 bool has_ext_dma = (tqspi->soc_data->has_dma &
624 QSPI_DMA_EXT) ? true : false;
625
626 if (tqspi->is_packed) {
627 ret = tegra_qspi_dma_map_xfer(tqspi, t);
628 if (ret < 0)
629 return ret;
630 }
631
632 val = QSPI_DMA_BLK_SET(tqspi->curr_dma_words - 1);
633 tegra_qspi_writel(tqspi, val, QSPI_DMA_BLK);
634
635 tegra_qspi_unmask_irq(tqspi);
636
637 if (tqspi->is_packed)
638 len = DIV_ROUND_UP(tqspi->curr_dma_words * tqspi->bytes_per_word, 4) * 4;
639 else
640 len = tqspi->curr_dma_words * 4;
641
642 /* set attention level based on length of transfer */
643 if (has_ext_dma) {
644 val = 0;
645 if (len & 0xf) {
646 val |= QSPI_TX_TRIG_1 | QSPI_RX_TRIG_1;
647 dma_burst = 1;
648 } else if (((len) >> 4) & 0x1) {
649 val |= QSPI_TX_TRIG_4 | QSPI_RX_TRIG_4;
650 dma_burst = 4;
651 } else {
652 val |= QSPI_TX_TRIG_8 | QSPI_RX_TRIG_8;
653 dma_burst = 8;
654 }
655 }
656
657 tegra_qspi_writel(tqspi, val, QSPI_DMA_CTL);
658 tqspi->dma_control_reg = val;
659
660 dma_sconfig.device_fc = true;
661 if ((tqspi->cur_direction & DATA_DIR_TX) && !has_ext_dma) {
662 if (tqspi->is_packed)
663 tx_dma_phys = t->tx_dma;
664 else
665 tx_dma_phys = tqspi->tx_dma_phys;
666 tegra_qspi_copy_client_txbuf_to_qspi_txbuf(tqspi, t);
667 tegra_qspi_writel(tqspi, (tx_dma_phys & 0xffffffff),
668 QSPI_DMA_MEM_ADDRESS_REG);
> 669 tegra_qspi_writel(tqspi, ((tx_dma_phys >> 32) & 0xff),
670 QSPI_DMA_HI_ADDRESS_REG);
671 } else if ((tqspi->cur_direction & DATA_DIR_TX) && has_ext_dma) {
672 dma_sconfig.dst_addr = tqspi->phys + QSPI_TX_FIFO;
673 dma_sconfig.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
674 dma_sconfig.dst_maxburst = dma_burst;
675 ret = dmaengine_slave_config(tqspi->tx_dma_chan, &dma_sconfig);
676 if (ret < 0) {
677 dev_err(tqspi->dev, "failed DMA slave config: %d\n", ret);
678 return ret;
679 }
680
681 tegra_qspi_copy_client_txbuf_to_qspi_txbuf(tqspi, t);
682 ret = tegra_qspi_start_tx_dma(tqspi, t, len);
683 if (ret < 0) {
684 dev_err(tqspi->dev, "failed to starting TX DMA: %d\n", ret);
685 return ret;
686 }
687 }
688
689 if ((tqspi->cur_direction & DATA_DIR_RX) && !has_ext_dma) {
690 if (tqspi->is_packed)
691 rx_dma_phys = t->rx_dma;
692 else
693 rx_dma_phys = tqspi->rx_dma_phys;
694 tegra_qspi_writel(tqspi, (rx_dma_phys & 0xffffffff),
695 QSPI_DMA_MEM_ADDRESS_REG);
696 tegra_qspi_writel(tqspi, ((rx_dma_phys >> 32) & 0xff),
697 QSPI_DMA_HI_ADDRESS_REG);
698 } else if ((tqspi->cur_direction & DATA_DIR_RX) && has_ext_dma) {
699 dma_sconfig.src_addr = tqspi->phys + QSPI_RX_FIFO;
700 dma_sconfig.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
701 dma_sconfig.src_maxburst = dma_burst;
702 ret = dmaengine_slave_config(tqspi->rx_dma_chan, &dma_sconfig);
703 if (ret < 0) {
704 dev_err(tqspi->dev, "failed DMA slave config: %d\n", ret);
705 return ret;
706 }
707
708 dma_sync_single_for_device(tqspi->dev, tqspi->rx_dma_phys,
709 tqspi->dma_buf_size,
710 DMA_FROM_DEVICE);
711
712 ret = tegra_qspi_start_rx_dma(tqspi, t, len);
713 if (ret < 0) {
714 dev_err(tqspi->dev, "failed to start RX DMA: %d\n", ret);
715 if (tqspi->cur_direction & DATA_DIR_TX)
716 dmaengine_terminate_all(tqspi->tx_dma_chan);
717 return ret;
718 }
719 }
720
721 tegra_qspi_writel(tqspi, tqspi->command1_reg, QSPI_COMMAND1);
722
723 tqspi->is_curr_dma_xfer = true;
724 tqspi->dma_control_reg = val;
725 val |= QSPI_DMA_EN;
726 tegra_qspi_writel(tqspi, val, QSPI_DMA_CTL);
727
728 return ret;
729 }
730
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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