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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2009
* Marvell Semiconductor <www.marvell.com>
* Written-by: Prafulla Wadaskar <prafulla@marvell.com>
*/
#include <common.h>
#include <log.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <usb.h>
#include <linux/delay.h>
#include "ehci.h"
#include <linux/mbus.h>
#include <asm/arch/cpu.h>
#include <dm.h>
#if defined(CONFIG_ARCH_KIRKWOOD)
#include <asm/arch/soc.h>
#elif defined(CONFIG_ARCH_ORION5X)
#include <asm/arch/orion5x.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
#define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4))
#define USB_WINDOW_BASE(i) (0x324 + ((i) << 4))
#define USB_TARGET_DRAM 0x0
#define USB2_SBUSCFG_OFF 0x90
#define USB_SBUSCFG_BAWR_OFF 0x6
#define USB_SBUSCFG_BARD_OFF 0x3
#define USB_SBUSCFG_AHBBRST_OFF 0x0
#define USB_SBUSCFG_BAWR_ALIGN_64B 0x4
#define USB_SBUSCFG_BARD_ALIGN_64B 0x4
#define USB_SBUSCFG_AHBBRST_INCR16 0x7
/*
* USB 2.0 Bridge Address Decoding registers setup
*/
#if CONFIG_IS_ENABLED(DM_USB)
struct ehci_mvebu_priv {
struct ehci_ctrl ehci;
fdt_addr_t hcd_base;
};
/*
* Once all the older Marvell SoC's (Orion, Kirkwood) are converted
* to the common mvebu archticture including the mbus setup, this
* will be the only function needed to configure the access windows
*/
static void usb_brg_adrdec_setup(void *base)
{
const struct mbus_dram_target_info *dram;
int i;
dram = mvebu_mbus_dram_info();
for (i = 0; i < 4; i++) {
writel(0, base + USB_WINDOW_CTRL(i));
writel(0, base + USB_WINDOW_BASE(i));
}
for (i = 0; i < dram->num_cs; i++) {
const struct mbus_dram_window *cs = dram->cs + i;
/* Write size, attributes and target id to control register */
writel(((cs->size - 1) & 0xffff0000) | (cs->mbus_attr << 8) |
(dram->mbus_dram_target_id << 4) | 1,
base + USB_WINDOW_CTRL(i));
/* Write base address to base register */
writel(cs->base, base + USB_WINDOW_BASE(i));
}
}
static void marvell_ehci_powerup_fixup(struct ehci_ctrl *ctrl,
uint32_t *status_reg, uint32_t *reg)
{
struct ehci_mvebu_priv *priv = ctrl->priv;
/*
* Set default value for reg SBUSCFG, which is Control for the AMBA
* system bus interface:
* BAWR = BARD = 4 : Align rd/wr bursts packets larger than 64 bytes
* AHBBRST = 7 : Align AHB burst for packets larger than 64 bytes
*/
writel((USB_SBUSCFG_BAWR_ALIGN_64B << USB_SBUSCFG_BAWR_OFF) |
(USB_SBUSCFG_BARD_ALIGN_64B << USB_SBUSCFG_BARD_OFF) |
(USB_SBUSCFG_AHBBRST_INCR16 << USB_SBUSCFG_AHBBRST_OFF),
priv->hcd_base + USB2_SBUSCFG_OFF);
mdelay(50);
}
static struct ehci_ops marvell_ehci_ops = {
.powerup_fixup = NULL,
};
static int ehci_mvebu_probe(struct udevice *dev)
{
struct ehci_mvebu_priv *priv = dev_get_priv(dev);
struct ehci_hccr *hccr;
struct ehci_hcor *hcor;
/*
* Get the base address for EHCI controller from the device node
*/
priv->hcd_base = dev_read_addr(dev);
if (priv->hcd_base == FDT_ADDR_T_NONE) {
debug("Can't get the EHCI register base address\n");
return -ENXIO;
}
/*
* For SoCs without hlock like Armada3700 we need to program the sbuscfg
* reg to guarantee AHB master's burst will not overrun or underrun
* the FIFO. Otherwise all USB2 write option will fail.
* Also, the address decoder doesn't need to get setup with this
* SoC, so don't call usb_brg_adrdec_setup().
*/
if (device_is_compatible(dev, "marvell,armada3700-ehci"))
marvell_ehci_ops.powerup_fixup = marvell_ehci_powerup_fixup;
else
usb_brg_adrdec_setup((void *)priv->hcd_base);
hccr = (struct ehci_hccr *)(priv->hcd_base + 0x100);
hcor = (struct ehci_hcor *)
((uintptr_t)hccr + HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
debug("ehci-marvell: init hccr %lx and hcor %lx hc_length %ld\n",
(uintptr_t)hccr, (uintptr_t)hcor,
(uintptr_t)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
return ehci_register(dev, hccr, hcor, &marvell_ehci_ops, 0,
USB_INIT_HOST);
}
static const struct udevice_id ehci_usb_ids[] = {
{ .compatible = "marvell,orion-ehci", },
{ .compatible = "marvell,armada3700-ehci", },
{ }
};
U_BOOT_DRIVER(ehci_mvebu) = {
.name = "ehci_mvebu",
.id = UCLASS_USB,
.of_match = ehci_usb_ids,
.probe = ehci_mvebu_probe,
.remove = ehci_deregister,
.ops = &ehci_usb_ops,
.plat_auto = sizeof(struct usb_plat),
.priv_auto = sizeof(struct ehci_mvebu_priv),
.flags = DM_FLAG_ALLOC_PRIV_DMA,
};
#else
#define MVUSB_BASE(port) MVUSB0_BASE
static void usb_brg_adrdec_setup(int index)
{
int i;
u32 size, base, attrib;
for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
/* Enable DRAM bank */
switch (i) {
case 0:
attrib = MVUSB0_CPU_ATTR_DRAM_CS0;
break;
case 1:
attrib = MVUSB0_CPU_ATTR_DRAM_CS1;
break;
case 2:
attrib = MVUSB0_CPU_ATTR_DRAM_CS2;
break;
case 3:
attrib = MVUSB0_CPU_ATTR_DRAM_CS3;
break;
default:
/* invalide bank, disable access */
attrib = 0;
break;
}
size = gd->bd->bi_dram[i].size;
base = gd->bd->bi_dram[i].start;
if ((size) && (attrib))
writel(MVCPU_WIN_CTRL_DATA(size, USB_TARGET_DRAM,
attrib, MVCPU_WIN_ENABLE),
MVUSB0_BASE + USB_WINDOW_CTRL(i));
else
writel(MVCPU_WIN_DISABLE,
MVUSB0_BASE + USB_WINDOW_CTRL(i));
writel(base, MVUSB0_BASE + USB_WINDOW_BASE(i));
}
}
/*
* Create the appropriate control structures to manage
* a new EHCI host controller.
*/
int ehci_hcd_init(int index, enum usb_init_type init,
struct ehci_hccr **hccr, struct ehci_hcor **hcor)
{
usb_brg_adrdec_setup(index);
*hccr = (struct ehci_hccr *)(MVUSB_BASE(index) + 0x100);
*hcor = (struct ehci_hcor *)((uint32_t) *hccr
+ HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
debug("ehci-marvell: init hccr %x and hcor %x hc_length %d\n",
(uint32_t)*hccr, (uint32_t)*hcor,
(uint32_t)HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
return 0;
}
/*
* Destroy the appropriate control structures corresponding
* the the EHCI host controller.
*/
int ehci_hcd_stop(int index)
{
return 0;
}
#endif /* CONFIG_IS_ENABLED(DM_USB) */
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