Re: [PATCH v6 04/10] gpu: host1x: Add context device management code

[kernel test robot <lkp@intel.com>]

Hi Mikko,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on drm/drm-next]
[also build test ERROR on tegra/for-next linus/master v5.19-rc5]
[cannot apply to tegra-drm/drm/tegra/for-next next-20220704]
[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]

url:    https://github.com/intel-lab-lkp/linux/commits/Mikko-Perttunen/Host1x-context-isolation-support/20220621-231339
base:   git://anongit.freedesktop.org/drm/drm drm-next
config: arm-randconfig-r005-20220703 (https://download.01.org/0day-ci/archive/20220705/202207051045.JWeVR4tW-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.3.0
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/2501beeae7469b805f9f624049fd56643cf6e18e
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Mikko-Perttunen/Host1x-context-isolation-support/20220621-231339
        git checkout 2501beeae7469b805f9f624049fd56643cf6e18e
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   drivers/gpu/host1x/context.c: In function 'host1x_memory_context_list_init':
>> drivers/gpu/host1x/context.c:80:40: error: 'struct iommu_fwspec' has no member named 'ids'
      80 |                 ctx->stream_id = fwspec->ids[0] & 0xffff;
         |                                        ^~


vim +80 drivers/gpu/host1x/context.c

    15	
    16	int host1x_memory_context_list_init(struct host1x *host1x)
    17	{
    18		struct host1x_memory_context_list *cdl = &host1x->context_list;
    19		struct device_node *node = host1x->dev->of_node;
    20		struct host1x_memory_context *ctx;
    21		unsigned int i;
    22		int err;
    23	
    24		cdl->devs = NULL;
    25		cdl->len = 0;
    26		mutex_init(&cdl->lock);
    27	
    28		err = of_property_count_u32_elems(node, "iommu-map");
    29		if (err < 0)
    30			return 0;
    31	
    32		cdl->devs = kcalloc(err, sizeof(*cdl->devs), GFP_KERNEL);
    33		if (!cdl->devs)
    34			return -ENOMEM;
    35		cdl->len = err / 4;
    36	
    37		for (i = 0; i < cdl->len; i++) {
    38			struct iommu_fwspec *fwspec;
    39	
    40			ctx = &cdl->devs[i];
    41	
    42			ctx->host = host1x;
    43	
    44			device_initialize(&ctx->dev);
    45	
    46			/*
    47			 * Due to an issue with T194 NVENC, only 38 bits can be used.
    48			 * Anyway, 256GiB of IOVA ought to be enough for anyone.
    49			 */
    50			ctx->dma_mask = DMA_BIT_MASK(38);
    51			ctx->dev.dma_mask = &ctx->dma_mask;
    52			ctx->dev.coherent_dma_mask = ctx->dma_mask;
    53			dev_set_name(&ctx->dev, "host1x-ctx.%d", i);
    54			ctx->dev.bus = &host1x_context_device_bus_type;
    55			ctx->dev.parent = host1x->dev;
    56	
    57			dma_set_max_seg_size(&ctx->dev, UINT_MAX);
    58	
    59			err = device_add(&ctx->dev);
    60			if (err) {
    61				dev_err(host1x->dev, "could not add context device %d: %d\n", i, err);
    62				goto del_devices;
    63			}
    64	
    65			err = of_dma_configure_id(&ctx->dev, node, true, &i);
    66			if (err) {
    67				dev_err(host1x->dev, "IOMMU configuration failed for context device %d: %d\n",
    68					i, err);
    69				device_del(&ctx->dev);
    70				goto del_devices;
    71			}
    72	
    73			fwspec = dev_iommu_fwspec_get(&ctx->dev);
    74			if (!fwspec) {
    75				dev_err(host1x->dev, "Context device %d has no IOMMU!\n", i);
    76				device_del(&ctx->dev);
    77				goto del_devices;
    78			}
    79	
  > 80			ctx->stream_id = fwspec->ids[0] & 0xffff;
    81		}
    82	
    83		return 0;
    84	
    85	del_devices:
    86		while (i--)
    87			device_del(&cdl->devs[i].dev);
    88	
    89		kfree(cdl->devs);
    90		cdl->len = 0;
    91	
    92		return err;
    93	}
    94	

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