1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (C) Copyright 2009 4 * Marvell Semiconductor <www.marvell.com> 5 * Written-by: Prafulla Wadaskar <prafulla@marvell.com> 6 */ 7 8 #include <common.h> 9 #include <asm/io.h> 10 #include <usb.h> 11 #include "ehci.h" 12 #include <linux/mbus.h> 13 #include <asm/arch/cpu.h> 14 #include <dm.h> 15 16 #if defined(CONFIG_KIRKWOOD) 17 #include <asm/arch/soc.h> 18 #elif defined(CONFIG_ORION5X) 19 #include <asm/arch/orion5x.h> 20 #endif 21 22 DECLARE_GLOBAL_DATA_PTR; 23 24 #define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4)) 25 #define USB_WINDOW_BASE(i) (0x324 + ((i) << 4)) 26 #define USB_TARGET_DRAM 0x0 27 28 #define USB2_SBUSCFG_OFF 0x90 29 30 #define USB_SBUSCFG_BAWR_OFF 0x6 31 #define USB_SBUSCFG_BARD_OFF 0x3 32 #define USB_SBUSCFG_AHBBRST_OFF 0x0 33 34 #define USB_SBUSCFG_BAWR_ALIGN_64B 0x4 35 #define USB_SBUSCFG_BARD_ALIGN_64B 0x4 36 #define USB_SBUSCFG_AHBBRST_INCR16 0x7 37 38 /* 39 * USB 2.0 Bridge Address Decoding registers setup 40 */ 41 #ifdef CONFIG_DM_USB 42 43 struct ehci_mvebu_priv { 44 struct ehci_ctrl ehci; 45 fdt_addr_t hcd_base; 46 }; 47 48 /* 49 * Once all the older Marvell SoC's (Orion, Kirkwood) are converted 50 * to the common mvebu archticture including the mbus setup, this 51 * will be the only function needed to configure the access windows 52 */ 53 static void usb_brg_adrdec_setup(void *base) 54 { 55 const struct mbus_dram_target_info *dram; 56 int i; 57 58 dram = mvebu_mbus_dram_info(); 59 60 for (i = 0; i < 4; i++) { 61 writel(0, base + USB_WINDOW_CTRL(i)); 62 writel(0, base + USB_WINDOW_BASE(i)); 63 } 64 65 for (i = 0; i < dram->num_cs; i++) { 66 const struct mbus_dram_window *cs = dram->cs + i; 67 68 /* Write size, attributes and target id to control register */ 69 writel(((cs->size - 1) & 0xffff0000) | (cs->mbus_attr << 8) | 70 (dram->mbus_dram_target_id << 4) | 1, 71 base + USB_WINDOW_CTRL(i)); 72 73 /* Write base address to base register */ 74 writel(cs->base, base + USB_WINDOW_BASE(i)); 75 } 76 } 77 78 static void marvell_ehci_powerup_fixup(struct ehci_ctrl *ctrl, 79 uint32_t *status_reg, uint32_t *reg) 80 { 81 struct ehci_mvebu_priv *priv = ctrl->priv; 82 83 /* 84 * Set default value for reg SBUSCFG, which is Control for the AMBA 85 * system bus interface: 86 * BAWR = BARD = 4 : Align rd/wr bursts packets larger than 64 bytes 87 * AHBBRST = 7 : Align AHB burst for packets larger than 64 bytes 88 */ 89 writel((USB_SBUSCFG_BAWR_ALIGN_64B << USB_SBUSCFG_BAWR_OFF) | 90 (USB_SBUSCFG_BARD_ALIGN_64B << USB_SBUSCFG_BARD_OFF) | 91 (USB_SBUSCFG_AHBBRST_INCR16 << USB_SBUSCFG_AHBBRST_OFF), 92 priv->hcd_base + USB2_SBUSCFG_OFF); 93 94 mdelay(50); 95 } 96 97 static struct ehci_ops marvell_ehci_ops = { 98 .powerup_fixup = NULL, 99 }; 100 101 static int ehci_mvebu_probe(struct udevice *dev) 102 { 103 struct ehci_mvebu_priv *priv = dev_get_priv(dev); 104 struct ehci_hccr *hccr; 105 struct ehci_hcor *hcor; 106 107 /* 108 * Get the base address for EHCI controller from the device node 109 */ 110 priv->hcd_base = devfdt_get_addr(dev); 111 if (priv->hcd_base == FDT_ADDR_T_NONE) { 112 debug("Can't get the EHCI register base address\n"); 113 return -ENXIO; 114 } 115 116 /* 117 * For SoCs without hlock like Armada3700 we need to program the sbuscfg 118 * reg to guarantee AHB master's burst will not overrun or underrun 119 * the FIFO. Otherwise all USB2 write option will fail. 120 * Also, the address decoder doesn't need to get setup with this 121 * SoC, so don't call usb_brg_adrdec_setup(). 122 */ 123 if (device_is_compatible(dev, "marvell,armada3700-ehci")) 124 marvell_ehci_ops.powerup_fixup = marvell_ehci_powerup_fixup; 125 else 126 usb_brg_adrdec_setup((void *)priv->hcd_base); 127 128 hccr = (struct ehci_hccr *)(priv->hcd_base + 0x100); 129 hcor = (struct ehci_hcor *) 130 ((uintptr_t)hccr + HC_LENGTH(ehci_readl(&hccr->cr_capbase))); 131 132 debug("ehci-marvell: init hccr %lx and hcor %lx hc_length %ld\n", 133 (uintptr_t)hccr, (uintptr_t)hcor, 134 (uintptr_t)HC_LENGTH(ehci_readl(&hccr->cr_capbase))); 135 136 return ehci_register(dev, hccr, hcor, &marvell_ehci_ops, 0, 137 USB_INIT_HOST); 138 } 139 140 static const struct udevice_id ehci_usb_ids[] = { 141 { .compatible = "marvell,orion-ehci", }, 142 { .compatible = "marvell,armada3700-ehci", }, 143 { } 144 }; 145 146 U_BOOT_DRIVER(ehci_mvebu) = { 147 .name = "ehci_mvebu", 148 .id = UCLASS_USB, 149 .of_match = ehci_usb_ids, 150 .probe = ehci_mvebu_probe, 151 .remove = ehci_deregister, 152 .ops = &ehci_usb_ops, 153 .platdata_auto_alloc_size = sizeof(struct usb_platdata), 154 .priv_auto_alloc_size = sizeof(struct ehci_mvebu_priv), 155 .flags = DM_FLAG_ALLOC_PRIV_DMA, 156 }; 157 158 #else 159 #define MVUSB_BASE(port) MVUSB0_BASE 160 161 static void usb_brg_adrdec_setup(int index) 162 { 163 int i; 164 u32 size, base, attrib; 165 166 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { 167 168 /* Enable DRAM bank */ 169 switch (i) { 170 case 0: 171 attrib = MVUSB0_CPU_ATTR_DRAM_CS0; 172 break; 173 case 1: 174 attrib = MVUSB0_CPU_ATTR_DRAM_CS1; 175 break; 176 case 2: 177 attrib = MVUSB0_CPU_ATTR_DRAM_CS2; 178 break; 179 case 3: 180 attrib = MVUSB0_CPU_ATTR_DRAM_CS3; 181 break; 182 default: 183 /* invalide bank, disable access */ 184 attrib = 0; 185 break; 186 } 187 188 size = gd->bd->bi_dram[i].size; 189 base = gd->bd->bi_dram[i].start; 190 if ((size) && (attrib)) 191 writel(MVCPU_WIN_CTRL_DATA(size, USB_TARGET_DRAM, 192 attrib, MVCPU_WIN_ENABLE), 193 MVUSB0_BASE + USB_WINDOW_CTRL(i)); 194 else 195 writel(MVCPU_WIN_DISABLE, 196 MVUSB0_BASE + USB_WINDOW_CTRL(i)); 197 198 writel(base, MVUSB0_BASE + USB_WINDOW_BASE(i)); 199 } 200 } 201 202 /* 203 * Create the appropriate control structures to manage 204 * a new EHCI host controller. 205 */ 206 int ehci_hcd_init(int index, enum usb_init_type init, 207 struct ehci_hccr **hccr, struct ehci_hcor **hcor) 208 { 209 usb_brg_adrdec_setup(index); 210 211 *hccr = (struct ehci_hccr *)(MVUSB_BASE(index) + 0x100); 212 *hcor = (struct ehci_hcor *)((uint32_t) *hccr 213 + HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase))); 214 215 debug("ehci-marvell: init hccr %x and hcor %x hc_length %d\n", 216 (uint32_t)*hccr, (uint32_t)*hcor, 217 (uint32_t)HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase))); 218 219 return 0; 220 } 221 222 /* 223 * Destroy the appropriate control structures corresponding 224 * the the EHCI host controller. 225 */ 226 int ehci_hcd_stop(int index) 227 { 228 return 0; 229 } 230 231 #endif /* CONFIG_DM_USB */ 232