Update this driver to support driver model. This involves implementing the AHCI operations and reusing existing common code.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v2: None
drivers/ata/dwc_ahsata.c | 113 +++++++++++++++++++++++++++++++++++++++++++++++ include/dwc_ahsata.h | 16 +++++++ 2 files changed, 129 insertions(+) create mode 100644 include/dwc_ahsata.h
diff --git a/drivers/ata/dwc_ahsata.c b/drivers/ata/dwc_ahsata.c index 1e3ddd75db..480ae115af 100644 --- a/drivers/ata/dwc_ahsata.c +++ b/drivers/ata/dwc_ahsata.c @@ -7,6 +7,8 @@
#include <common.h> #include <ahci.h> +#include <dm.h> +#include <dwc_ahsata.h> #include <fis.h> #include <libata.h> #include <malloc.h> @@ -845,6 +847,7 @@ static ulong sata_write_common(struct ahci_uc_priv *uc_priv, return rc; }
+#if !CONFIG_IS_ENABLED(AHCI) static int ahci_init_one(int pdev) { int rc; @@ -964,3 +967,113 @@ int scan_sata(int dev)
return dwc_ahsata_scan_common(uc_priv, pdev); } +#endif /* CONFIG_IS_ENABLED(AHCI) */ + +#if CONFIG_IS_ENABLED(AHCI) + +int dwc_ahsata_port_status(struct udevice *dev, int port) +{ + struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev); + struct sata_port_regs *port_mmio; + + port_mmio = uc_priv->port[port].port_mmio; + return readl(&port_mmio->ssts) & SATA_PORT_SSTS_DET_MASK ? 0 : -ENXIO; +} + +int dwc_ahsata_bus_reset(struct udevice *dev) +{ + struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev); + struct sata_host_regs *host_mmio = uc_priv->mmio_base; + + setbits_le32(&host_mmio->ghc, SATA_HOST_GHC_HR); + while (readl(&host_mmio->ghc) & SATA_HOST_GHC_HR) + udelay(100); + + return 0; +} + +int dwc_ahsata_scan(struct udevice *dev) +{ + struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev); + struct blk_desc *desc; + struct udevice *blk; + int ret; + + /* + * Create only one block device and do detection + * to make sure that there won't be a lot of + * block devices created + */ + device_find_first_child(dev, &blk); + if (!blk) { + ret = blk_create_devicef(dev, "dwc_ahsata_blk", "blk", + IF_TYPE_SATA, -1, 512, 0, &blk); + if (ret) { + debug("Can't create device\n"); + return ret; + } + } + + desc = dev_get_uclass_platdata(blk); + ret = dwc_ahsata_scan_common(uc_priv, desc); + if (ret) { + debug("%s: Failed to scan bus\n", __func__); + return ret; + } + + return 0; +} + +int dwc_ahsata_probe(struct udevice *dev) +{ + struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev); + int ret; + + uc_priv->host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | + ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA | ATA_FLAG_NO_ATAPI; + uc_priv->mmio_base = (void __iomem *)dev_read_addr(dev); + + /* initialize adapter */ + ret = ahci_host_init(uc_priv); + if (ret) + return ret; + + ahci_print_info(uc_priv); + + return dwc_ahci_start_ports(uc_priv); +} + +static ulong dwc_ahsata_read(struct udevice *blk, lbaint_t blknr, + lbaint_t blkcnt, void *buffer) +{ + struct blk_desc *desc = dev_get_uclass_platdata(blk); + struct udevice *dev = dev_get_parent(blk); + struct ahci_uc_priv *uc_priv; + + uc_priv = dev_get_uclass_priv(dev); + return sata_read_common(uc_priv, desc, blknr, blkcnt, buffer); +} + +static ulong dwc_ahsata_write(struct udevice *blk, lbaint_t blknr, + lbaint_t blkcnt, const void *buffer) +{ + struct blk_desc *desc = dev_get_uclass_platdata(blk); + struct udevice *dev = dev_get_parent(blk); + struct ahci_uc_priv *uc_priv; + + uc_priv = dev_get_uclass_priv(dev); + return sata_write_common(uc_priv, desc, blknr, blkcnt, buffer); +} + +static const struct blk_ops dwc_ahsata_blk_ops = { + .read = dwc_ahsata_read, + .write = dwc_ahsata_write, +}; + +U_BOOT_DRIVER(dwc_ahsata_blk) = { + .name = "dwc_ahsata_blk", + .id = UCLASS_BLK, + .ops = &dwc_ahsata_blk_ops, +}; + +#endif diff --git a/include/dwc_ahsata.h b/include/dwc_ahsata.h new file mode 100644 index 0000000000..cae275fe75 --- /dev/null +++ b/include/dwc_ahsata.h @@ -0,0 +1,16 @@ +/* + * Copyright 2017 Google, Inc + * Written by Simon Glass sjg@chromium.org + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __DWC_AHSATA_H__ +#define __DWC_AHSATA_H__ + +int dwc_ahsata_bus_reset(struct udevice *dev); +int dwc_ahsata_probe(struct udevice *dev); +int dwc_ahsata_scan(struct udevice *dev); +int dwc_ahsata_port_status(struct udevice *dev, int port); + +#endif