diff options
Diffstat (limited to 'drivers/ntb/hw')
| -rw-r--r-- | drivers/ntb/hw/mscc/ntb_hw_switchtec.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/ntb/hw/mscc/ntb_hw_switchtec.c b/drivers/ntb/hw/mscc/ntb_hw_switchtec.c index 088ae220ecb4..51fec6497164 100644 --- a/drivers/ntb/hw/mscc/ntb_hw_switchtec.c +++ b/drivers/ntb/hw/mscc/ntb_hw_switchtec.c @@ -109,6 +109,7 @@ struct switchtec_ntb { int nr_direct_mw; int nr_lut_mw; + int nr_rsvd_luts; int direct_mw_to_bar[MAX_DIRECT_MW]; int peer_nr_direct_mw; @@ -197,7 +198,7 @@ static int switchtec_ntb_mw_count(struct ntb_dev *ntb, int pidx) { struct switchtec_ntb *sndev = ntb_sndev(ntb); int nr_direct_mw = sndev->peer_nr_direct_mw; - int nr_lut_mw = sndev->peer_nr_lut_mw - 1; + int nr_lut_mw = sndev->peer_nr_lut_mw - sndev->nr_rsvd_luts; if (pidx != NTB_DEF_PEER_IDX) return -EINVAL; @@ -210,12 +211,12 @@ static int switchtec_ntb_mw_count(struct ntb_dev *ntb, int pidx) static int lut_index(struct switchtec_ntb *sndev, int mw_idx) { - return mw_idx - sndev->nr_direct_mw + 1; + return mw_idx - sndev->nr_direct_mw + sndev->nr_rsvd_luts; } static int peer_lut_index(struct switchtec_ntb *sndev, int mw_idx) { - return mw_idx - sndev->peer_nr_direct_mw + 1; + return mw_idx - sndev->peer_nr_direct_mw + sndev->nr_rsvd_luts; } static int switchtec_ntb_mw_get_align(struct ntb_dev *ntb, int pidx, @@ -355,8 +356,9 @@ static int switchtec_ntb_mw_set_trans(struct ntb_dev *ntb, int pidx, int widx, static int switchtec_ntb_peer_mw_count(struct ntb_dev *ntb) { struct switchtec_ntb *sndev = ntb_sndev(ntb); + int nr_lut_mw = sndev->nr_lut_mw - sndev->nr_rsvd_luts; - return sndev->nr_direct_mw + (use_lut_mws ? sndev->nr_lut_mw - 1 : 0); + return sndev->nr_direct_mw + (use_lut_mws ? nr_lut_mw : 0); } static int switchtec_ntb_direct_get_addr(struct switchtec_ntb *sndev, @@ -1008,6 +1010,7 @@ static int switchtec_ntb_init_shared_mw(struct switchtec_ntb *sndev) u32 ctl_val; int rc; + sndev->nr_rsvd_luts++; sndev->self_shared = dma_zalloc_coherent(&sndev->stdev->pdev->dev, LUT_SIZE, &sndev->self_shared_dma, @@ -1074,6 +1077,7 @@ static void switchtec_ntb_deinit_shared_mw(struct switchtec_ntb *sndev) dma_free_coherent(&sndev->stdev->pdev->dev, LUT_SIZE, sndev->self_shared, sndev->self_shared_dma); + sndev->nr_rsvd_luts--; } static irqreturn_t switchtec_ntb_doorbell_isr(int irq, void *dev) |