diff options
Diffstat (limited to 'drivers/ntb')
| -rw-r--r-- | drivers/ntb/hw/amd/ntb_hw_amd.c | 44 | ||||
| -rw-r--r-- | drivers/ntb/hw/amd/ntb_hw_amd.h | 3 |
2 files changed, 37 insertions, 10 deletions
diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.c b/drivers/ntb/hw/amd/ntb_hw_amd.c index 621a69a0cff2..d4029d531466 100644 --- a/drivers/ntb/hw/amd/ntb_hw_amd.c +++ b/drivers/ntb/hw/amd/ntb_hw_amd.c @@ -913,28 +913,32 @@ static int amd_init_isr(struct amd_ntb_dev *ndev) return ndev_init_isr(ndev, AMD_DB_CNT, AMD_MSIX_VECTOR_CNT); } -static void amd_init_side_info(struct amd_ntb_dev *ndev) +static void amd_set_side_info_reg(struct amd_ntb_dev *ndev, bool peer) { - void __iomem *mmio = ndev->self_mmio; + void __iomem *mmio = NULL; unsigned int reg; - u32 ntb_ctl; + + if (peer) + mmio = ndev->peer_mmio; + else + mmio = ndev->self_mmio; reg = readl(mmio + AMD_SIDEINFO_OFFSET); if (!(reg & AMD_SIDE_READY)) { reg |= AMD_SIDE_READY; writel(reg, mmio + AMD_SIDEINFO_OFFSET); } - - ntb_ctl = readl(mmio + AMD_CNTL_OFFSET); - ntb_ctl |= (PMM_REG_CTL | SMM_REG_CTL); - writel(ntb_ctl, mmio + AMD_CNTL_OFFSET); } -static void amd_deinit_side_info(struct amd_ntb_dev *ndev) +static void amd_clear_side_info_reg(struct amd_ntb_dev *ndev, bool peer) { - void __iomem *mmio = ndev->self_mmio; + void __iomem *mmio = NULL; unsigned int reg; - u32 ntb_ctl; + + if (peer) + mmio = ndev->peer_mmio; + else + mmio = ndev->self_mmio; reg = readl(mmio + AMD_SIDEINFO_OFFSET); if (reg & AMD_SIDE_READY) { @@ -942,6 +946,26 @@ static void amd_deinit_side_info(struct amd_ntb_dev *ndev) writel(reg, mmio + AMD_SIDEINFO_OFFSET); readl(mmio + AMD_SIDEINFO_OFFSET); } +} + +static void amd_init_side_info(struct amd_ntb_dev *ndev) +{ + void __iomem *mmio = ndev->self_mmio; + u32 ntb_ctl; + + amd_set_side_info_reg(ndev, false); + + ntb_ctl = readl(mmio + AMD_CNTL_OFFSET); + ntb_ctl |= (PMM_REG_CTL | SMM_REG_CTL); + writel(ntb_ctl, mmio + AMD_CNTL_OFFSET); +} + +static void amd_deinit_side_info(struct amd_ntb_dev *ndev) +{ + void __iomem *mmio = ndev->self_mmio; + u32 ntb_ctl; + + amd_clear_side_info_reg(ndev, false); ntb_ctl = readl(mmio + AMD_CNTL_OFFSET); ntb_ctl &= ~(PMM_REG_CTL | SMM_REG_CTL); diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.h b/drivers/ntb/hw/amd/ntb_hw_amd.h index 156a4a92b803..62ffdf35b683 100644 --- a/drivers/ntb/hw/amd/ntb_hw_amd.h +++ b/drivers/ntb/hw/amd/ntb_hw_amd.h @@ -215,4 +215,7 @@ struct amd_ntb_dev { #define ntb_ndev(__ntb) container_of(__ntb, struct amd_ntb_dev, ntb) #define hb_ndev(__work) container_of(__work, struct amd_ntb_dev, hb_timer.work) +static void amd_set_side_info_reg(struct amd_ntb_dev *ndev, bool peer); +static void amd_clear_side_info_reg(struct amd_ntb_dev *ndev, bool peer); + #endif |