diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2022-09-17 09:12:19 -0700 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2022-09-29 22:46:08 +0530 |
| commit | a8563a33a5e26064061f2fb34215c97f0e2995f4 (patch) | |
| tree | f21be5ad84711da19283451117934ae92872e6b9 /drivers/dma/idxd/init.c | |
| parent | 22bd0df846ca1388ce9f5d54fb6e9f597c932ba9 (diff) | |
| download | linux-a8563a33a5e26064061f2fb34215c97f0e2995f4.tar.bz2 | |
dmanegine: idxd: reformat opcap output to match bitmap_parse() input
To make input and output consistent and prepping for the per WQ operation
configuration support, change the output of opcap display to match the
input that is expected by bitmap_parse() helper function. The output will
be a bitmap with field width as the number of bits using the %*pb format
specifier for printk() family.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Co-developed-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: https://lore.kernel.org/r/20220917161222.2835172-3-fenghua.yu@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/idxd/init.c')
| -rw-r--r-- | drivers/dma/idxd/init.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c index 7e27e69ff741..f6f0654a79b8 100644 --- a/drivers/dma/idxd/init.c +++ b/drivers/dma/idxd/init.c @@ -375,6 +375,19 @@ static void idxd_read_table_offsets(struct idxd_device *idxd) dev_dbg(dev, "IDXD Perfmon Offset: %#x\n", idxd->perfmon_offset); } +static void multi_u64_to_bmap(unsigned long *bmap, u64 *val, int count) +{ + int i, j, nr; + + for (i = 0, nr = 0; i < count; i++) { + for (j = 0; j < BITS_PER_LONG_LONG; j++) { + if (val[i] & BIT(j)) + set_bit(nr, bmap); + nr++; + } + } +} + static void idxd_read_caps(struct idxd_device *idxd) { struct device *dev = &idxd->pdev->dev; @@ -433,6 +446,7 @@ static void idxd_read_caps(struct idxd_device *idxd) IDXD_OPCAP_OFFSET + i * sizeof(u64)); dev_dbg(dev, "opcap[%d]: %#llx\n", i, idxd->hw.opcap.bits[i]); } + multi_u64_to_bmap(idxd->opcap_bmap, &idxd->hw.opcap.bits[0], 4); } static struct idxd_device *idxd_alloc(struct pci_dev *pdev, struct idxd_driver_data *data) @@ -454,6 +468,12 @@ static struct idxd_device *idxd_alloc(struct pci_dev *pdev, struct idxd_driver_d if (idxd->id < 0) return NULL; + idxd->opcap_bmap = bitmap_zalloc_node(IDXD_MAX_OPCAP_BITS, GFP_KERNEL, dev_to_node(dev)); + if (!idxd->opcap_bmap) { + ida_free(&idxd_ida, idxd->id); + return NULL; + } + device_initialize(conf_dev); conf_dev->parent = dev; conf_dev->bus = &dsa_bus_type; |