Hi Christian, [auto build test WARNING on pci/next] [also build test WARNING on v4.11-rc2 next-20170310] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Christian-K-nig/PCI-add-resizeable-BAR-infrastructure-v3/20170314-163334 base: https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next reproduce: make htmldocs All warnings (new ones prefixed by >>): lib/crc32.c:148: warning: No description found for parameter 'tab)[256]' lib/crc32.c:148: warning: Excess function parameter 'tab' description in 'crc32_le_generic' lib/crc32.c:293: warning: No description found for parameter 'tab)[256]' lib/crc32.c:293: warning: Excess function parameter 'tab' description in 'crc32_be_generic' lib/crc32.c:1: warning: no structured comments found >> drivers/pci/pci.c:2951: warning: No description found for parameter 'pdev' >> drivers/pci/pci.c:2951: warning: Excess function parameter 'dev' description >> in 'pci_rbar_get_possible_sizes' drivers/pci/pci.c:2989: warning: No description found for parameter 'pdev' >> drivers/pci/pci.c:2989: warning: Excess function parameter 'dev' description >> in 'pci_rbar_get_current_size' drivers/pci/pci.c:3027: warning: No description found for parameter 'pdev' >> drivers/pci/pci.c:3027: warning: Excess function parameter 'dev' description >> in 'pci_rbar_set_size' vim +/pdev +2951 drivers/pci/pci.c 2945 * @bar: BAR to query 2946 * 2947 * Get the possible sizes of a resizeable BAR as bitmask defined in the spec 2948 * (bit 0=1MB, bit 19=512GB). Returns 0 if BAR isn't resizeable. 2949 */ 2950 u32 pci_rbar_get_possible_sizes(struct pci_dev *pdev, int bar) > 2951 { 2952 unsigned pos, nbars; 2953 u32 ctrl, cap; 2954 unsigned i; 2955 2956 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_REBAR); 2957 if (!pos) 2958 return 0; 2959 2960 pci_read_config_dword(pdev, pos + PCI_REBAR_CTRL, &ctrl); 2961 nbars = (ctrl & PCI_REBAR_CTRL_NBAR_MASK) >> PCI_REBAR_CTRL_NBAR_SHIFT; 2962 2963 for (i = 0; i < nbars; ++i, pos += 8) { 2964 int bar_idx; 2965 2966 pci_read_config_dword(pdev, pos + PCI_REBAR_CTRL, &ctrl); 2967 bar_idx = (ctrl & PCI_REBAR_CTRL_BAR_IDX_MASK) >> 2968 PCI_REBAR_CTRL_BAR_IDX_SHIFT; 2969 if (bar_idx != bar) 2970 continue; 2971 2972 pci_read_config_dword(pdev, pos + PCI_REBAR_CAP, &cap); 2973 return (cap & PCI_REBAR_CTRL_SIZES_MASK) >> 2974 PCI_REBAR_CTRL_SIZES_SHIFT; 2975 } 2976 2977 return 0; 2978 } 2979 2980 /** 2981 * pci_rbar_get_current_size - get the current size of a BAR 2982 * @dev: PCI device 2983 * @bar: BAR to set size to 2984 * 2985 * Read the size of a BAR from the resizeable BAR config. 2986 * Returns size if found or negativ error code. 2987 */ 2988 int pci_rbar_get_current_size(struct pci_dev *pdev, int bar) > 2989 { 2990 unsigned pos, nbars; 2991 u32 ctrl; 2992 unsigned i; 2993 2994 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_REBAR); 2995 if (!pos) 2996 return -ENOTSUPP; 2997 2998 pci_read_config_dword(pdev, pos + PCI_REBAR_CTRL, &ctrl); 2999 nbars = (ctrl & PCI_REBAR_CTRL_NBAR_MASK) >> PCI_REBAR_CTRL_NBAR_SHIFT; 3000 3001 for (i = 0; i < nbars; ++i, pos += 8) { 3002 int bar_idx; 3003 3004 pci_read_config_dword(pdev, pos + PCI_REBAR_CTRL, &ctrl); 3005 bar_idx = (ctrl & PCI_REBAR_CTRL_BAR_IDX_MASK) >> 3006 PCI_REBAR_CTRL_BAR_IDX_SHIFT; 3007 if (bar_idx != bar) 3008 continue; 3009 3010 return (ctrl & PCI_REBAR_CTRL_BAR_SIZE_MASK) >> 3011 PCI_REBAR_CTRL_BAR_SIZE_SHIFT; 3012 } 3013 3014 return -ENOENT; 3015 } 3016 3017 /** 3018 * pci_rbar_set_size - set a new size for a BAR 3019 * @dev: PCI device 3020 * @bar: BAR to set size to 3021 * @size: new size as defined in the spec (log2(size in bytes) - 20) 3022 * 3023 * Set the new size of a BAR as defined in the spec (0=1MB, 19=512GB). 3024 * Returns true if resizing was successful, false otherwise. 3025 */ 3026 int pci_rbar_set_size(struct pci_dev *pdev, int bar, int size) > 3027 { 3028 unsigned pos, nbars; 3029 u32 ctrl; 3030 unsigned i; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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