[U-Boot] [U-BOOT][PATCH] drivers: ahci: write upper 32 bits for clb and fis registers
Suneel Garapati
suneelglinux at gmail.com
Thu Aug 24 06:02:41 UTC 2017
If 64-bit capability is supported, commandlistbase and fis base
should be split as lower32 and upper32. upper32 should be
written to PORT_(LST/FIS)_ADDR_HI.
Signed-off-by: Suneel Garapati <suneelglinux at gmail.com>
---
drivers/ata/ahci.c | 11 +++++++++--
include/ahci.h | 1 +
2 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 5e4df19..df50c82 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -607,10 +607,17 @@ static int ahci_port_start(struct ahci_uc_priv *uc_priv, u8 port)
pp->cmd_tbl_sg =
(struct ahci_sg *)(uintptr_t)virt_to_phys((void *)mem);
- writel_with_flush((unsigned long)pp->cmd_slot,
+ if (uc_priv->cap & HOST_CAP_64)
+ writel_with_flush(cpu_to_le32(UPPER32(pp->cmd_slot)),
+ port_mmio + PORT_LST_ADDR_HI);
+ writel_with_flush(cpu_to_le32(LOWER32(pp->cmd_slot)),
port_mmio + PORT_LST_ADDR);
- writel_with_flush(pp->rx_fis, port_mmio + PORT_FIS_ADDR);
+ if (uc_priv->cap & HOST_CAP_64)
+ writel_with_flush(cpu_to_le32(UPPER32(pp->rx_fis)),
+ port_mmio + PORT_FIS_ADDR_HI);
+ writel_with_flush(cpu_to_le32(LOWER32(pp->rx_fis)),
+ port_mmio + PORT_FIS_ADDR);
#ifdef CONFIG_SUNXI_AHCI
sunxi_dma_init(port_mmio);
diff --git a/include/ahci.h b/include/ahci.h
index 33171b7..80e7f13 100644
--- a/include/ahci.h
+++ b/include/ahci.h
@@ -40,6 +40,7 @@
#define HOST_RESET (1 << 0) /* reset controller; self-clear */
#define HOST_IRQ_EN (1 << 1) /* global IRQ enable */
#define HOST_AHCI_EN (1 << 31) /* AHCI enabled */
+#define HOST_CAP_64 (1 << 31) /* 64bit addressing capability */
/* Registers for each SATA port */
#define PORT_LST_ADDR 0x00 /* command list DMA addr */
--
2.7.4
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