[U-Boot] [PATCH 3/4 v2] scsi: ceva: add ls1012a soc support

[andy.tang at nxp.com]

From: Yuantian Tang <andy.tang at nxp.com>

Make the code structure more general so that more socs can be
added easily and also remove speed limitation restriction.
Add the ls1012a sata support as well.

Signed-off-by: Tang Yuantian <andy.tang at nxp.com>
Reviewed-by: Michal Simek <michal.simek at xilinx.com>
Tested-by: Michal Simek <michal.simek at xilinx.com>
	(with and without CONFIG_OF_LIVE on zynqmp zcu102)
---
v2:
    - refine the commit message
    - use live tree functions

 drivers/ata/sata_ceva.c |   85 ++++++++++++++++++++++++++++------------------
 1 files changed, 52 insertions(+), 33 deletions(-)

diff --git a/drivers/ata/sata_ceva.c b/drivers/ata/sata_ceva.c
index a7d45e8..2e8296c 100644
--- a/drivers/ata/sata_ceva.c
+++ b/drivers/ata/sata_ceva.c
@@ -18,6 +18,7 @@
 #define AHCI_VEND_PP3C  0xB0
 #define AHCI_VEND_PP4C  0xB4
 #define AHCI_VEND_PP5C  0xB8
+#define AHCI_VEND_AXICC 0xBc
 #define AHCI_VEND_PAXIC 0xC0
 #define AHCI_VEND_PTC   0xC8
 
@@ -72,45 +73,57 @@
 #define DRV_NAME	"ahci-ceva"
 #define CEVA_FLAG_BROKEN_GEN2	1
 
+/* flag bit definition */
+#define FLAG_COHERENT	1
+
+/* register config value */
+#define CEVA_PHY1_CFG	0xa003fffe
+#define CEVA_PHY2_CFG	0x28184d1f
+#define CEVA_PHY3_CFG	0x0e081509
+#define CEVA_TRANS_CFG	0x08000029
+#define CEVA_AXICC_CFG	0x3fffffff
+
+/* ecc addr-val pair */
+#define ECC_DIS_ADDR_CH2	0x80000000
+#define ECC_DIS_VAL_CH2	0x20140520
+
+enum ceva_soc {
+	CEVA_1V84,
+	CEVA_LS1012A,
+};
+
 struct ceva_sata_priv {
 	ulong base;
+	enum ceva_soc soc;
+	ulong flag;
 };
 
-static int ceva_init_sata(ulong mmio)
+static int ceva_init_sata(struct ceva_sata_priv *priv)
 {
+	ulong base = priv->base;
 	ulong tmp;
-	int i;
-
-	/*
-	 * AXI Data bus width to 64
-	 * Set Mem Addr Read, Write ID for data transfers
-	 * Transfer limit to 72 DWord
-	 */
-	tmp = PAXIC_ADBW_BW64 | PAXIC_MAWIDD | PAXIC_MARIDD | PAXIC_OTL;
-	writel(tmp, mmio + AHCI_VEND_PAXIC);
-
-	/* Set AHCI Enable */
-	tmp = readl(mmio + HOST_CTL);
-	tmp |= HOST_AHCI_EN;
-	writel(tmp, mmio + HOST_CTL);
-
-	for (i = 0; i < NR_PORTS; i++) {
-		/* TPSS TPRS scalars, CISE and Port Addr */
-		tmp = PCFG_TPSS_VAL | PCFG_TPRS_VAL | (PCFG_PAD_VAL + i);
-		writel(tmp, mmio + AHCI_VEND_PCFG);
-
-		/* Port Phy Cfg register enables */
-		tmp = PPCFG_TTA | PPCFG_PSS_EN | PPCFG_ESDF_EN;
-		writel(tmp, mmio + AHCI_VEND_PPCFG);
 
-		/* Rx Watermark setting  */
+	switch (priv->soc) {
+	case CEVA_1V84:
+		tmp = PAXIC_ADBW_BW64 | PAXIC_MAWIDD | PAXIC_MARIDD | PAXIC_OTL;
+		writel(tmp, base + AHCI_VEND_PAXIC);
+		tmp = PCFG_TPSS_VAL | PCFG_TPRS_VAL | PCFG_PAD_VAL;
+		writel(tmp, base + AHCI_VEND_PCFG);
+		tmp = PPCFG_TTA | PPCFG_PSS_EN | PPCFG_ESDF_EN;
+		writel(tmp, base + AHCI_VEND_PPCFG);
 		tmp = PTC_RX_WM_VAL | PTC_RSVD;
-		writel(tmp, mmio + AHCI_VEND_PTC);
-
-		/* Default to Gen 2 Speed and Gen 1 if Gen2 is broken */
-		tmp = PORT_SCTL_SPD_GEN3 | PORT_SCTL_IPM;
-		writel(tmp, mmio + PORT_SCR_CTL + PORT_BASE + PORT_OFFSET * i);
+		writel(tmp, base + AHCI_VEND_PTC);
+		break;
+
+	case CEVA_LS1012A:
+		writel(ECC_DIS_ADDR_CH2, ECC_DIS_VAL_CH2);
+		writel(CEVA_PHY1_CFG, base + AHCI_VEND_PPCFG);
+		writel(CEVA_TRANS_CFG, base + AHCI_VEND_PTC);
+		if (priv->flag & FLAG_COHERENT)
+			writel(CEVA_AXICC_CFG, base + AHCI_VEND_AXICC);
+		break;
 	}
+
 	return 0;
 }
 
@@ -125,13 +138,14 @@ static int sata_ceva_probe(struct udevice *dev)
 {
 	struct ceva_sata_priv *priv = dev_get_priv(dev);
 
-	ceva_init_sata(priv->base);
+	ceva_init_sata(priv);
 
 	return ahci_probe_scsi(dev, priv->base);
 }
 
 static const struct udevice_id sata_ceva_ids[] = {
-	{ .compatible = "ceva,ahci-1v84" },
+	{ .compatible = "ceva,ahci-1v84", .data = CEVA_1V84 },
+	{ .compatible = "fsl,ls1012a-ahci", .data = CEVA_LS1012A },
 	{ }
 };
 
@@ -139,10 +153,15 @@ static int sata_ceva_ofdata_to_platdata(struct udevice *dev)
 {
 	struct ceva_sata_priv *priv = dev_get_priv(dev);
 
-	priv->base = devfdt_get_addr(dev);
+	if (dev_read_bool(dev, "dma-coherent"))
+		priv->flag |= FLAG_COHERENT;
+
+	priv->base = dev_read_addr(dev);
 	if (priv->base == FDT_ADDR_T_NONE)
 		return -EINVAL;
 
+	priv->soc = dev_get_driver_data(dev);
+
 	return 0;
 }
 
-- 
1.7.1