diff options
| author | Jeffrey Huang <huangjw@broadcom.com> | 2015-11-05 16:25:49 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-11-05 16:33:08 -0500 |
| commit | 11809490ac17810cff90c12e9f2f3e0303a72121 (patch) | |
| tree | 33294bbeb2e8c5369ea2c298a26373e53b8bfdd9 | |
| parent | 614388ce39f3d61ad7f95db65f409d35d5943616 (diff) | |
bnxt_en: map CAG_REG_LEGACY_INT_STATUS_MASK to GRC window #4
In order to use offset 0x4014 for reading CAG interrupt status,
the actual CAG register must be mapped to GRC bar0 window #4.
Otherwise, the driver is reading garbage. This patch corrects
this issue.
Signed-off-by: Jeffrey Huang <huangjw@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.c | 19 | ||||
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.h | 4 |
2 files changed, 20 insertions, 3 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 6c2e0c622831..a62deff5a4ac 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -1292,8 +1292,6 @@ static inline int bnxt_has_work(struct bnxt *bp, struct bnxt_cp_ring_info *cpr) return TX_CMP_VALID(txcmp, raw_cons); } -#define CAG_LEGACY_INT_STATUS 0x2014 - static irqreturn_t bnxt_inta(int irq, void *dev_instance) { struct bnxt_napi *bnapi = dev_instance; @@ -1305,7 +1303,7 @@ static irqreturn_t bnxt_inta(int irq, void *dev_instance) prefetch(&cpr->cp_desc_ring[CP_RING(cons)][CP_IDX(cons)]); if (!bnxt_has_work(bp, cpr)) { - int_status = readl(bp->bar0 + CAG_LEGACY_INT_STATUS); + int_status = readl(bp->bar0 + BNXT_CAG_REG_LEGACY_INT_STATUS); /* return if erroneous interrupt */ if (!(int_status & (0x10000 << cpr->cp_ring_struct.fw_ring_id))) return IRQ_NONE; @@ -4527,10 +4525,25 @@ static int bnxt_update_phy_setting(struct bnxt *bp) return rc; } +/* Common routine to pre-map certain register block to different GRC window. + * A PF has 16 4K windows and a VF has 4 4K windows. However, only 15 windows + * in PF and 3 windows in VF that can be customized to map in different + * register blocks. + */ +static void bnxt_preset_reg_win(struct bnxt *bp) +{ + if (BNXT_PF(bp)) { + /* CAG registers map to GRC window #4 */ + writel(BNXT_CAG_REG_BASE, + bp->bar0 + BNXT_GRCPF_REG_WINDOW_BASE_OUT + 12); + } +} + static int __bnxt_open_nic(struct bnxt *bp, bool irq_re_init, bool link_re_init) { int rc = 0; + bnxt_preset_reg_win(bp); netif_carrier_off(bp->dev); if (irq_re_init) { rc = bnxt_setup_int_mode(bp); diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index 5afe65d1316b..674bc5159b91 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -841,6 +841,10 @@ struct bnxt_queue_info { u8 queue_profile; }; +#define BNXT_GRCPF_REG_WINDOW_BASE_OUT 0x400 +#define BNXT_CAG_REG_LEGACY_INT_STATUS 0x4014 +#define BNXT_CAG_REG_BASE 0x300000 + struct bnxt { void __iomem *bar0; void __iomem *bar1; |