diff options
Diffstat (limited to 'drivers/s390/cio/device_ops.c')
| -rw-r--r-- | drivers/s390/cio/device_ops.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c index 4435ae0b3027..d722458c5928 100644 --- a/drivers/s390/cio/device_ops.c +++ b/drivers/s390/cio/device_ops.c @@ -429,8 +429,8 @@ struct ciw *ccw_device_get_ciw(struct ccw_device *cdev, __u32 ct) if (cdev->private->flags.esid == 0) return NULL; for (ciw_cnt = 0; ciw_cnt < MAX_CIWS; ciw_cnt++) - if (cdev->private->senseid.ciw[ciw_cnt].ct == ct) - return cdev->private->senseid.ciw + ciw_cnt; + if (cdev->private->dma_area->senseid.ciw[ciw_cnt].ct == ct) + return cdev->private->dma_area->senseid.ciw + ciw_cnt; return NULL; } @@ -699,6 +699,23 @@ void ccw_device_get_schid(struct ccw_device *cdev, struct subchannel_id *schid) } EXPORT_SYMBOL_GPL(ccw_device_get_schid); +/* + * Allocate zeroed dma coherent 31 bit addressable memory using + * the subchannels dma pool. Maximal size of allocation supported + * is PAGE_SIZE. + */ +void *ccw_device_dma_zalloc(struct ccw_device *cdev, size_t size) +{ + return cio_gp_dma_zalloc(cdev->private->dma_pool, &cdev->dev, size); +} +EXPORT_SYMBOL(ccw_device_dma_zalloc); + +void ccw_device_dma_free(struct ccw_device *cdev, void *cpu_addr, size_t size) +{ + cio_gp_dma_free(cdev->private->dma_pool, cpu_addr, size); +} +EXPORT_SYMBOL(ccw_device_dma_free); + EXPORT_SYMBOL(ccw_device_set_options_mask); EXPORT_SYMBOL(ccw_device_set_options); EXPORT_SYMBOL(ccw_device_clear_options); |