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| author |   Tang Yuantian <Yuantian.Tang@nxp.com> | 2017-01-20 14:59:34 +0800 |
|---|---|---|
| committer |   Tejun Heo <tj@kernel.org> | 2017-01-20 08:31:14 -0500 |
| commit | 386dc3b87a04fe4929bc3afb83660f050a5a0faa (patch) | |
| tree | ba9809a9e38b3fe73275b7e69e43f55e66e5f813 /drivers/ata | |
| parent | Revert "libata: switch to dynamic allocation instead of ata_scsi_rbuf" (diff) | |
| download | linux-dev-386dc3b87a04fe4929bc3afb83660f050a5a0faa.tar.xz linux-dev-386dc3b87a04fe4929bc3afb83660f050a5a0faa.zip | |
ahci: qoriq: added a condition to enable dma coherence
Enable DMA coherence in SATA controller on condition that
dma-coherent property exists in sata node in DTS.
Signed-off-by: Tang Yuantian <yuantian.tang@nxp.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/ahci_qoriq.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/ata/ahci_qoriq.c b/drivers/ata/ahci_qoriq.c index 9884c8c6e934..01ef66270a46 100644 --- a/drivers/ata/ahci_qoriq.c +++ b/drivers/ata/ahci_qoriq.c @@ -59,6 +59,7 @@ struct ahci_qoriq_priv { struct ccsr_ahci *reg_base; enum ahci_qoriq_type type; void __iomem *ecc_addr; + bool is_dmacoherent; }; static const struct of_device_id ahci_qoriq_of_match[] = { @@ -164,26 +165,31 @@ static int ahci_qoriq_phy_init(struct ahci_host_priv *hpriv) writel(LS1021A_PORT_PHY4, reg_base + PORT_PHY4); writel(LS1021A_PORT_PHY5, reg_base + PORT_PHY5); writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS); - writel(AHCI_PORT_AXICC_CFG, reg_base + LS1021A_AXICC_ADDR); + if (qpriv->is_dmacoherent) + writel(AHCI_PORT_AXICC_CFG, + reg_base + LS1021A_AXICC_ADDR); break; case AHCI_LS1043A: writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1); writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS); - writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC); + if (qpriv->is_dmacoherent) + writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC); break; case AHCI_LS2080A: writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1); writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS); - writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC); + if (qpriv->is_dmacoherent) + writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC); break; case AHCI_LS1046A: writel(LS1046A_SATA_ECC_DIS, qpriv->ecc_addr); writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1); writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS); - writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC); + if (qpriv->is_dmacoherent) + writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC); break; } @@ -221,6 +227,7 @@ static int ahci_qoriq_probe(struct platform_device *pdev) if (IS_ERR(qoriq_priv->ecc_addr)) return PTR_ERR(qoriq_priv->ecc_addr); } + qoriq_priv->is_dmacoherent = of_dma_is_coherent(np); rc = ahci_platform_enable_resources(hpriv); if (rc) |