libpayload: Add dwc2 usb driver

BUG=chrome-os-partner:29778
TEST=emerge-veyron libpayload

Change-Id: I33f312a939e600b8f4e50a092bb61c5d6bc6d741
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 39ffe53336a2a3b2baa067cdd3dccca5ae93f68e
Original-Change-Id: Idad1ad165fd44df635a0cb13bfec6fada1378bc8
Original-Signed-off-by: huang lin <hl@rock-chips.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/211053
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: http://review.coreboot.org/9453
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
This commit is contained in:
huang lin 2014-08-06 16:43:43 +08:00 committed by Patrick Georgi
parent fff922bd14
commit 365250e61e
11 changed files with 1231 additions and 1 deletions

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@ -470,6 +470,12 @@ config USB_XHCI
Select this option if you want to use USB 3.0
NOTE: This option is not (fully) implemented yet
config USB_DWC2
bool "Support for USB DesignWare HCD controllers"
depends on USB && !USB_HID
help
Select this option if you want to use DesignWare USB 2.0 host controller
config USB_HID
bool "Support for USB keyboards"
depends on USB

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@ -60,6 +60,7 @@ CONFIG_LP_USB_HID=y
CONFIG_LP_USB_HUB=y
CONFIG_LP_USB_MSC=y
CONFIG_LP_USB_GEN_HUB=y
# CONFIG_LP_USB_DWC2 is not set
# CONFIG_LP_USB_PCI is not set
# CONFIG_LP_BIG_ENDIAN is not set
CONFIG_LP_LITTLE_ENDIAN=y

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@ -78,6 +78,7 @@ CONFIG_LP_USB_HID=y
CONFIG_LP_USB_HUB=y
CONFIG_LP_USB_MSC=y
CONFIG_LP_USB_GEN_HUB=y
# CONFIG_LP_USB_DWC2 is not set
CONFIG_LP_USB_PCI=y
# CONFIG_LP_BIG_ENDIAN is not set
CONFIG_LP_LITTLE_ENDIAN=y

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@ -71,6 +71,7 @@ CONFIG_LP_USB_HID=y
CONFIG_LP_USB_HUB=y
CONFIG_LP_USB_MSC=y
CONFIG_LP_USB_GEN_HUB=y
# CONFIG_LP_USB_DWC2 is not set
# CONFIG_LP_USB_PCI is not set
# CONFIG_LP_BIG_ENDIAN is not set
CONFIG_LP_LITTLE_ENDIAN=y

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@ -100,6 +100,8 @@ libc-$(CONFIG_LP_USB_XHCI) += usb/xhci_commands.c
libc-$(CONFIG_LP_USB_XHCI) += usb/xhci_rh.c
libc-$(CONFIG_LP_USB_HID) += usb/usbhid.c
libc-$(CONFIG_LP_USB_MSC) += usb/usbmsc.c
libc-$(CONFIG_LP_USB_DWC2) += usb/dwc2.c
libc-$(CONFIG_LP_USB_DWC2) += usb/dwc2_rh.c
# used by both USB HID and keyboard
libc-y += hid.c

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@ -0,0 +1,356 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Rockchip Electronics
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <libpayload.h>
#include <arch/cache.h>
#include "dwc2.h"
#include "dwc2_private.h"
static void dummy(hci_t *controller)
{
}
static void dwc2_reinit(hci_t *controller)
{
dwc2_reg_t *reg = DWC2_REG(controller);
gusbcfg_t gusbcfg = { .d32 = 0 };
grstctl_t grstctl = { .d32 = 0 };
gintsts_t gintsts = { .d32 = 0 };
gahbcfg_t gahbcfg = { .d32 = 0 };
grxfsiz_t grxfsiz = { .d32 = 0 };
hcintmsk_t hcintmsk = { .d32 = 0 };
gnptxfsiz_t gnptxfsiz = { .d32 = 0 };
const int timeout = 10000;
int i;
/* Wait for AHB idle */
for (i = 0; i < timeout; i++) {
udelay(1);
grstctl.d32 = readl(&reg->core.grstctl);
if (grstctl.ahbidle)
break;
}
if (i == timeout)
fatal("DWC2 Init error AHB Idle\n");
/* Restart the Phy Clock */
writel(0x0, &reg->pcgr.pcgcctl);
/* Core soft reset */
grstctl.csftrst = 1;
writel(grstctl.d32, &reg->core.grstctl);
for (i = 0; i < timeout; i++) {
udelay(1);
grstctl.d32 = readl(&reg->core.grstctl);
if (!grstctl.csftrst)
break;
}
if (i == timeout)
fatal("DWC2 Init error reset fail\n");
/* Set 16bit PHY if & Force host mode */
gusbcfg.d32 = readl(&reg->core.gusbcfg);
gusbcfg.phyif = 1;
gusbcfg.forcehstmode = 1;
gusbcfg.forcedevmode = 0;
writel(gusbcfg.d32, &reg->core.gusbcfg);
/* Wait for force host mode effect, it may takes 100ms */
for (i = 0; i < timeout; i++) {
udelay(10);
gintsts.d32 = readl(&reg->core.gintsts);
if (gintsts.curmod)
break;
}
if (i == timeout)
fatal("DWC2 Init error force host mode fail\n");
/*
* Config FIFO
* The non-periodic tx fifo and rx fifo share one continuous
* piece of IP-internal SRAM.
*/
grxfsiz.rxfdep = DWC2_RXFIFO_DEPTH;
writel(grxfsiz.d32, &reg->core.grxfsiz);
gnptxfsiz.nptxfstaddr = DWC2_RXFIFO_DEPTH;
gnptxfsiz.nptxfdep = DWC2_NPTXFIFO_DEPTH;
writel(gnptxfsiz.d32, &reg->core.gnptxfsiz);
/* Init host channels */
hcintmsk.xfercomp = 1;
hcintmsk.xacterr = 1;
hcintmsk.stall = 1;
hcintmsk.chhltd = 1;
hcintmsk.bblerr = 1;
for (i = 0; i < MAX_EPS_CHANNELS; i++)
writel(hcintmsk.d32, &reg->host.hchn[i].hcintmaskn);
/* Unmask interrupt and configure DMA mode */
gahbcfg.glblintrmsk = 1;
gahbcfg.hbstlen = DMA_BURST_INCR8;
gahbcfg.dmaen = 1;
writel(gahbcfg.d32, &reg->core.gahbcfg);
DWC2_INST(controller)->hprt0 = &reg->host.hprt;
usb_debug("DWC2 init finished!\n");
}
static void dwc2_shutdown(hci_t *controller)
{
detach_controller(controller);
free(DWC2_INST(controller)->dma_buffer);
free(DWC2_INST(controller));
free(controller);
}
/*
* This function returns the actual transfer length when the transfer succeeded
* or an error code if the transfer failed
*/
static int
wait_for_complete(endpoint_t *ep, uint32_t ch_num)
{
hcint_t hcint;
hcchar_t hcchar;
hctsiz_t hctsiz;
dwc2_reg_t *reg = DWC2_REG(ep->dev->controller);
int timeout = 600000; /* time out after 600000 * 5us == 3s */
/*
* TODO: We should take care of up to three times of transfer error
* retry here, according to the USB 2.0 spec 4.5.2
*/
do {
udelay(5);
hcint.d32 = readl(&reg->host.hchn[ch_num].hcintn);
hctsiz.d32 = readl(&reg->host.hchn[ch_num].hctsizn);
if (hcint.chhltd) {
writel(hcint.d32, &reg->host.hchn[ch_num].hcintn);
if (hcint.xfercomp)
return hctsiz.xfersize;
else if (hcint.xacterr)
return -HCSTAT_XFERERR;
else if (hcint.bblerr)
return -HCSTAT_BABBLE;
else if (hcint.stall)
return -HCSTAT_STALL;
else
return -HCSTAT_UNKNOW;
}
} while (timeout--);
/* Release the channel on timeout */
hcchar.d32 = readl(&reg->host.hchn[ch_num].hccharn);
if (hcchar.chen) {
/*
* Programming the HCCHARn register with the chdis and
* chena bits set to 1 at the same time to disable the
* channel and the core will generate a channel halted
* interrupt.
*/
hcchar.chdis = 1;
writel(hcchar.d32, &reg->host.hchn[ch_num].hccharn);
do {
hcchar.d32 = readl(&reg->host.hchn[ch_num].hccharn);
} while (hcchar.chen);
}
/* Clear all pending interrupt flags */
hcint.d32 = ~0;
writel(hcint.d32, &reg->host.hchn[ch_num].hcintn);
return -HCSTAT_TIMEOUT;
}
static int
dwc2_transfer(endpoint_t *ep, int size, int pid, ep_dir_t dir,
uint32_t ch_num, u8 *data_buf)
{
uint32_t do_copy;
int ret;
uint32_t packet_cnt;
uint32_t packet_size;
uint32_t transferred = 0;
uint32_t inpkt_length;
hctsiz_t hctsiz = { .d32 = 0 };
hcchar_t hcchar = { .d32 = 0 };
void *aligned_buf;
dwc2_reg_t *reg = DWC2_REG(ep->dev->controller);
packet_size = ep->maxpacketsize;
packet_cnt = ALIGN_UP(size, packet_size) / packet_size;
inpkt_length = packet_cnt * packet_size;
/* At least 1 packet should be programed */
packet_cnt = (packet_cnt == 0) ? 1 : packet_cnt;
/*
* For an IN, this field is the buffer size that the application has
* reserved for the transfer. The application should program this field
* as integer multiple of the maximum packet size for IN transactions.
*/
hctsiz.xfersize = (dir == EPDIR_OUT) ? size : inpkt_length;
hctsiz.pktcnt = packet_cnt;
hctsiz.pid = pid;
hcchar.mps = packet_size;
hcchar.epnum = ep->endpoint & 0xf;
hcchar.epdir = dir;
hcchar.eptype = ep->type;
hcchar.multicnt = 1;
hcchar.devaddr = ep->dev->address;
hcchar.chdis = 0;
hcchar.chen = 1;
if (size > DMA_SIZE) {
usb_debug("Transfer too large: %d\n", size);
return -1;
}
/*
* Check the buffer address which should be 4-byte aligned and DMA
* coherent
*/
do_copy = !dma_coherent(data_buf) || ((uintptr_t)data_buf & 0x3);
aligned_buf = do_copy ? DWC2_INST(ep->dev->controller)->dma_buffer :
data_buf;
if (do_copy && (dir == EPDIR_OUT))
memcpy(aligned_buf, data_buf, size);
writel(hctsiz.d32, &reg->host.hchn[ch_num].hctsizn);
writel((uint32_t)aligned_buf, &reg->host.hchn[ch_num].hcdman);
writel(hcchar.d32, &reg->host.hchn[ch_num].hccharn);
ret = wait_for_complete(ep, ch_num);
if (ret >= 0) {
/* Calculate actual transferred length */
transferred = (dir == EPDIR_IN) ? inpkt_length - ret : ret;
if (do_copy && (dir == EPDIR_IN))
memcpy(data_buf, aligned_buf, transferred);
}
/* Save data toggle */
hctsiz.d32 = readl(&reg->host.hchn[ch_num].hctsizn);
ep->toggle = hctsiz.pid;
if (ret < 0) {
usb_debug("%s Transfer stop code: %x\n", __func__, ret);
return ret;
}
return transferred;
}
static int
dwc2_bulk(endpoint_t *ep, int size, u8 *src, int finalize)
{
ep_dir_t data_dir;
if (ep->direction == IN)
data_dir = EPDIR_IN;
else if (ep->direction == OUT)
data_dir = EPDIR_OUT;
else
return -1;
return dwc2_transfer(ep, size, ep->toggle, data_dir, 0, src);
}
static int
dwc2_control(usbdev_t *dev, direction_t dir, int drlen, void *setup,
int dalen, u8 *src)
{
int ret = 0;
ep_dir_t data_dir;
if (dir == IN)
data_dir = EPDIR_IN;
else if (dir == OUT)
data_dir = EPDIR_OUT;
else
return -1;
/* Setup Phase */
if (dwc2_transfer(&dev->endpoints[0], drlen, PID_SETUP, EPDIR_OUT, 0,
setup) < 0)
return -1;
/* Data Phase */
if (dalen > 0) {
ret = dwc2_transfer(&dev->endpoints[0], dalen, PID_DATA1,
data_dir, 0, src);
if (ret < 0)
return -1;
}
/* Status Phase */
if (dwc2_transfer(&dev->endpoints[0], 0, PID_DATA1, !data_dir, 0,
NULL) < 0)
return -1;
return ret;
}
hci_t *dwc2_init(void *bar)
{
hci_t *controller = new_controller();
controller->instance = xzalloc(sizeof(dwc_ctrl_t));
DWC2_INST(controller)->dma_buffer = dma_malloc(DMA_SIZE);
if (!DWC2_INST(controller)->dma_buffer) {
usb_debug("Not enough DMA memory for DWC2 bounce buffer\n");
goto free_dwc2;
}
controller->type = DWC2;
controller->start = dummy;
controller->stop = dummy;
controller->reset = dummy;
controller->init = dwc2_reinit;
controller->shutdown = dwc2_shutdown;
controller->bulk = dwc2_bulk;
controller->control = dwc2_control;
controller->set_address = generic_set_address;
controller->finish_device_config = NULL;
controller->destroy_device = NULL;
controller->create_intr_queue = NULL;
controller->destroy_intr_queue = NULL;
controller->poll_intr_queue = NULL;
controller->reg_base = (uintptr_t)bar;
init_device_entry(controller, 0);
/* Init controller */
controller->init(controller);
/* Setup up root hub */
controller->devices[0]->controller = controller;
controller->devices[0]->init = dwc2_rh_init;
controller->devices[0]->init(controller->devices[0]);
return controller;
free_dwc2:
detach_controller(controller);
free(DWC2_INST(controller));
free(controller);
return NULL;
}

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@ -0,0 +1,27 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Rockchip Electronics
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __DWC2_HCD_H__
#define __DWC2_HCD_H__
#include <usb/usb.h>
hci_t *dwc2_init(void *bar);
void dwc2_rh_init (usbdev_t *dev);
#endif

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@ -0,0 +1,643 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Rockchip Electronics
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __DWC2_REGS_H__
#define __DWC2_REGS_H__
#define MAX_EPS_CHANNELS 16
typedef struct core_reg {
uint32_t gotgctl;
uint32_t gotgint;
uint32_t gahbcfg;
uint32_t gusbcfg;
uint32_t grstctl;
uint32_t gintsts;
uint32_t gintmsk;
uint32_t grxstsr;
uint32_t grxstsp;
uint32_t grxfsiz;
uint32_t gnptxfsiz;
uint32_t gnptxsts;
uint32_t gi2cctl;
uint32_t gpvndctl;
uint32_t ggpio;
uint32_t guid;
uint32_t gsnpsid;
uint32_t ghwcfg1;
uint32_t ghwcfg2;
uint32_t ghwcfg3;
uint32_t ghwcfg4;
uint32_t reserved1[(0x100 - 0x54) / 4];
uint32_t hptxfsiz;
uint32_t dptxfsiz_dieptxf[15];
uint32_t reserved2[(0x400 - 0x140) / 4];
} core_reg_t;
typedef struct hc_reg {
uint32_t hccharn;
uint32_t hcspltn;
uint32_t hcintn;
uint32_t hcintmaskn;
uint32_t hctsizn;
uint32_t hcdman;
uint32_t reserved[2];
} hc_reg_t;
/* Host Mode Register Structures */
typedef struct host_reg {
uint32_t hcfg;
uint32_t hfir;
uint32_t hfnum;
uint32_t reserved0;
uint32_t hptxsts;
uint32_t haint;
uint32_t haintmsk;
uint32_t reserved1[(0x440 - 0x41c) / 4];
uint32_t hprt;
uint32_t reserved2[(0x500 - 0x444) / 4];
hc_reg_t hchn[MAX_EPS_CHANNELS];
uint32_t reserved3[(0x800 - 0x700) / 4];
} host_reg_t;
/* Device IN ep reg */
typedef struct in_ep_reg {
uint32_t diepctl;
uint32_t reserved04;
uint32_t diepint;
uint32_t reserved0c;
uint32_t dieptsiz;
uint32_t diepdma;
uint32_t dtxfsts;
uint32_t diepdmab;
} in_ep_reg_t;
typedef struct out_ep_reg {
uint32_t doepctl;
uint32_t reserved04;
uint32_t doepint;
uint32_t reserved0c;
uint32_t doeptsiz;
uint32_t doepdma;
uint32_t reserved18;
uint32_t doepdmab;
} out_ep_reg_t;
/* Device Mode Registers Structures */
typedef struct device_reg {
uint32_t dcfg;
uint32_t dctl;
uint32_t dsts;
uint32_t unused;
uint32_t diepmsk;
uint32_t doepmsk;
uint32_t daint;
uint32_t daintmsk;
uint32_t dtknqr1;
uint32_t dtknqr2;
uint32_t dvbusdis;
uint32_t dvbuspulse;
uint32_t dtknqr3_dthrctl;
uint32_t dtknqr4_fifoemptymsk;
uint32_t reserved1[(0x900 - 0x838) / 4];
in_ep_reg_t inep[MAX_EPS_CHANNELS];
out_ep_reg_t outep[MAX_EPS_CHANNELS];
uint32_t reserved8[(0xe00 - 0xd00) / 4];
} device_reg_t;
typedef struct pwr_clk_ctrl_reg {
uint32_t pcgcctl;
uint32_t reserved[(0x1000 - 0xe04) / 4];
} pwr_clk_ctrl_reg_t;
typedef struct data_fifo {
uint32_t dataport;
uint32_t reserved[(0x1000 - 0x004) / 4];
} data_fifo_t;
typedef struct dwc2_otg_reg {
core_reg_t core;
host_reg_t host;
device_reg_t device;
pwr_clk_ctrl_reg_t pcgr;
data_fifo_t dfifo[MAX_EPS_CHANNELS];
uint32_t reserved[(0x40000 - 0x11000) / 4];
} dwc2_reg_t;
/**
* This union represents the bit fields of the Core AHB Configuration
* Register (GAHBCFG).
*/
typedef union {
/* raw register data */
uint32_t d32;
/* register bits */
struct {
unsigned glblintrmsk:1;
#define GLBINT_ENABLE 1
unsigned hbstlen:4;
#define DMA_BURST_SINGLE 0
#define DMA_BURST_INCR 1
#define DMA_BURST_INCR4 3
#define DMA_BURST_INCR8 5
#define DMA_BURST_INCR16 7
unsigned dmaen:1;
unsigned reserved:1;
unsigned nptxfemplvl:1;
unsigned ptxfemplvl:1;
unsigned reserved9_31:23;
};
} gahbcfg_t;
/**
* This union represents the bit fields of the Core USB Configuration
* Register (GUSBCFG).
*/
typedef union {
/* raw register data */
uint32_t d32;
/* register bits */
struct {
unsigned toutcal:3;
unsigned phyif:1;
unsigned ulpiutmisel:1;
unsigned fsintf:1;
unsigned physel:1;
unsigned ddrsel:1;
unsigned srpcap:1;
unsigned hnpcap:1;
unsigned usbtrdtim:4;
unsigned reserved14:1;
unsigned phylpwrclksel:1;
unsigned otgi2csel:1;
unsigned ulpifsls:1;
unsigned ulpiautores:1;
unsigned ulpiclksusm:1;
unsigned ulpiextvbusdrv:1;
unsigned ulpiextvbusindicator:1;
unsigned termseldlpulse:1;
unsigned reserved23_28:6;
unsigned forcehstmode:1;
unsigned forcedevmode:1;
unsigned cortxpkt:1;
};
} gusbcfg_t;
/**
* This union represents the bit fields of the Core Reset Register
* (GRSTCTL).
*/
typedef union {
/* raw register data */
uint32_t d32;
/* register bits */
struct {
/** Core Soft Reset (CSftRst) (Device and Host)
*
* The application can flush the control logic in the
* entire core using this bit. This bit resets the
* pipelines in the AHB Clock domain as well as the
* PHY Clock domain.
*
* The state machines are reset to an IDLE state, the
* control bits in the CSRs are cleared, all the
* transmit FIFOs and the receive FIFO are flushed.
*
* The status mask bits that control the generation of
* the interrupt, are cleared, to clear the
* interrupt. The interrupt status bits are not
* cleared, so the application can get the status of
* any events that occurred in the core after it has
* set this bit.
*
* Any transactions on the AHB are terminated as soon
* as possible following the protocol. Any
* transactions on the USB are terminated immediately.
*
* The configuration settings in the CSRs are
* unchanged, so the software doesn't have to
* reprogram these registers (Device
* Configuration/Host Configuration/Core System
* Configuration/Core PHY Configuration).
*
* The application can write to this bit, any time it
* wants to reset the core. This is a self clearing
* bit and the core clears this bit after all the
* necessary logic is reset in the core, which may
* take several clocks, depending on the current state
* of the core.
*/
unsigned csftrst:1;
/** Hclk Soft Reset
*
* The application uses this bit to reset the control logic in
* the AHB clock domain. Only AHB clock domain pipelines are
* reset.
*/
unsigned hsftrst:1;
/** Host Frame Counter Reset (Host Only)<br>
*
* The application can reset the (micro)frame number
* counter inside the core, using this bit. When the
* (micro)frame counter is reset, the subsequent SOF
* sent out by the core, will have a (micro)frame
* number of 0.
*/
unsigned frmcntrrst:1;
/** In Token Sequence Learning Queue Flush
* (INTknQFlsh) (Device Only)
*/
unsigned intknqflsh:1;
/** RxFIFO Flush (RxFFlsh) (Device and Host)
*
* The application can flush the entire Receive FIFO
* using this bit. <p>The application must first
* ensure that the core is not in the middle of a
* transaction. <p>The application should write into
* this bit, only after making sure that neither the
* DMA engine is reading from the RxFIFO nor the MAC
* is writing the data in to the FIFO. <p>The
* application should wait until the bit is cleared
* before performing any other operations. This bit
* will takes 8 clocks (slowest of PHY or AHB clock)
* to clear.
*/
unsigned rxfflsh:1;
/** TxFIFO Flush (TxFFlsh) (Device and Host).
*
* This bit is used to selectively flush a single or
* all transmit FIFOs. The application must first
* ensure that the core is not in the middle of a
* transaction. <p>The application should write into
* this bit, only after making sure that neither the
* DMA engine is writing into the TxFIFO nor the MAC
* is reading the data out of the FIFO. <p>The
* application should wait until the core clears this
* bit, before performing any operations. This bit
* will takes 8 clocks (slowest of PHY or AHB clock)
* to clear.
*/
unsigned txfflsh:1;
/** TxFIFO Number (TxFNum) (Device and Host).
*
* This is the FIFO number which needs to be flushed,
* using the TxFIFO Flush bit. This field should not
* be changed until the TxFIFO Flush bit is cleared by
* the core.
* - 0x0 : Non Periodic TxFIFO Flush
* - 0x1 : Periodic TxFIFO #1 Flush in device mode
* or Periodic TxFIFO in host mode
* - 0x2 : Periodic TxFIFO #2 Flush in device mode.
* - ...
* - 0xF : Periodic TxFIFO #15 Flush in device mode
* - 0x10: Flush all the Transmit NonPeriodic and
* Transmit Periodic FIFOs in the core
*/
unsigned txfnum:5;
/** Reserved */
unsigned reserved11_29:19;
/** DMA Request Signal. Indicated DMA request is in
* probress. Used for debug purpose. */
unsigned dmareq:1;
/** AHB Master Idle. Indicates the AHB Master State
* Machine is in IDLE condition. */
unsigned ahbidle:1;
} ;
} grstctl_t;
/**
* This union represents the bit fields of the Core Interrupt Mask
* Register (GINTMSK).
*/
typedef union {
/* raw register data */
uint32_t d32;
/* register bits */
struct {
unsigned curmod:1;
unsigned modemis:1;
unsigned otgint:1;
unsigned sof:1;
unsigned rxflvl:1;
unsigned nptxfemp:1;
unsigned ginnakeff:1;
unsigned goutnakeff:1;
unsigned reserved8:1;
unsigned i2cint:1;
unsigned erlysusp:1;
unsigned usbsusp:1;
unsigned usbrst:1;
unsigned enumdone:1;
unsigned isooutdrop:1;
unsigned eopf:1;
unsigned reserved16_20:5;
unsigned incompip:1;
unsigned reserved22_23:2;
unsigned prtint:1;
unsigned hchint:1;
unsigned ptxfemp:1;
unsigned reserved27:1;
unsigned conidstschng:1;
unsigned disconnint:1;
unsigned sessreqint:1;
unsigned wkupint:1;
} ;
} gintmsk_t;
/**
* This union represents the bit fields of the Core Non-Periodic
* Transmit FIFO Size Register(GNPTXFSIZ).
*/
typedef union {
/* raw register data */
uint32_t d32;
/* register bits */
struct {
unsigned nptxfstaddr:16;
unsigned nptxfdep:16;
#define DWC2_NPTXFIFO_DEPTH 0x80
};
} gnptxfsiz_t;
/**
* This union represents the bit fields of the Core Receive FIFO Size
* Register(GRXFSIZ).
*/
typedef union {
/* raw register data */
uint32_t d32;
/* register bits */
/*The value in this fieles is in terms of 32-bit words size.
*/
struct {
unsigned rxfdep:16;
#define DWC2_RXFIFO_DEPTH 0x200
unsigned reserved:16;
};
} grxfsiz_t;
/**
* This union represents the bit fields of the Core Interrupt Register
* (GINTSTS).
*/
typedef union {
/* raw register data */
uint32_t d32;
#define SOF_INTR_MASK 0x0008
/* register bits */
struct {
unsigned curmod:1;
#define HOST_MODE 1
#define DEVICE_MODE 0
unsigned modemis:1;
unsigned otgint:1;
unsigned sof:1;
unsigned rxflvl:1;
unsigned nptxfemp:1;
unsigned ginnakeff:1;
unsigned goutnakeff:1;
unsigned reserved8:1;
unsigned i2cint:1;
unsigned erlysusp:1;
unsigned usbsusp:1;
unsigned usbrst:1;
unsigned enumdone:1;
unsigned isooutdrop:1;
unsigned eopf:1;
unsigned reserved16_20:5;
unsigned incompip:1;
unsigned reserved22_23:2;
unsigned prtint:1;
unsigned hchint:1;
unsigned ptxfemp:1;
unsigned reserved27:1;
unsigned conidstschng:1;
unsigned disconnint:1;
unsigned sessreqint:1;
unsigned wkupint:1;
};
} gintsts_t;
/**
* This union represents the bit fields in the Host Configuration Register.
*/
typedef union {
/* raw register data */
uint32_t d32;
/* register bits */
struct {
/** FS/LS Phy Clock Select */
unsigned fslspclksel:2;
#define PHYCLK_30_60_MHZ 0
#define PHYCLK_48_MHZ 1
#define PHYCLK_6_MHZ 2
/** FS/LS Only Support */
unsigned fslssupp:1;
};
} hcfg_t;
/**
* This union represents the bit fields in the Host Port Control and status
* Register.
*/
typedef union {
/* raw register data */
uint32_t d32;
/* register bits */
struct {
unsigned prtconnsts:1;
unsigned prtconndet:1;
unsigned prtena:1;
unsigned prtenchng:1;
unsigned prtovrcurract:1;
unsigned prtovrcurrchng:1;
unsigned prtres:1;
unsigned prtsusp:1;
unsigned prtrst:1;
unsigned reserved9:1;
unsigned prtlnsts:2;
unsigned prtpwr:1;
unsigned prttstctl:4;
unsigned prtspd:2;
#define PRTSPD_HIGH 0
#define PRTSPD_FULL 1
#define PRTSPD_LOW 2
unsigned reserved19_31:13;
};
} hprt_t;
/* Mask W1C bits */
#define HPRT_W1C_MASK (~((1 << 1) | (1 << 2) | (1 << 3) | (1 << 5)))
/**
* This union represents the bit fields in the Host Channel Characteristics
* Register.
*/
typedef union {
/* raw register data */
uint32_t d32;
/* register bits */
struct {
/** Maximum packet size in bytes */
unsigned mps:11;
/** Endpoint number */
unsigned epnum:4;
/** 0: OUT, 1: IN */
unsigned epdir:1;
unsigned reserved:1;
/** 0: Full/high speed device, 1: Low speed device */
unsigned lspddev:1;
/** 0: Control, 1: Isoc, 2: Bulk, 3: Intr */
unsigned eptype:2;
/** Packets per frame for periodic transfers. 0 is reserved. */
unsigned multicnt:2;
/** Device address */
unsigned devaddr:7;
/**
* Frame to transmit periodic transaction.
* 0: even, 1: odd
*/
unsigned oddfrm:1;
/** Channel disable */
unsigned chdis:1;
/** Channel enable */
unsigned chen:1;
};
} hcchar_t;
typedef enum {
EPDIR_OUT = 0,
EPDIR_IN,
} ep_dir_t;
/**
* This union represents the bit fields in the Host All Interrupt
* Register.
*/
typedef union {
/* raw register data */
uint32_t d32;
/* register bits */
struct {
/** Transfer Complete */
unsigned xfercomp:1;
/** Channel Halted */
unsigned chhltd:1;
/** AHB Error */
unsigned ahberr:1;
/** STALL Response Received */
unsigned stall:1;
/** NAK Response Received */
unsigned nak:1;
/** ACK Response Received */
unsigned ack:1;
/** NYET Response Received */
unsigned nyet:1;
/** Transaction Err */
unsigned xacterr:1;
/** Babble Error */
unsigned bblerr:1;
/** Frame Overrun */
unsigned frmovrun:1;
/** Data Toggle Error */
unsigned datatglerr:1;
/** Reserved */
unsigned reserved:21;
};
} hcint_t;
/**
* This union represents the bit fields in the Host Channel Transfer Size
* Register.
*/
typedef union {
/* raw register data */
uint32_t d32;
/* register bits */
struct {
/* Total transfer size in bytes */
unsigned xfersize:19;
/** Data packets to transfer */
unsigned pktcnt:10;
/**
* Packet ID for next data packet
* 0: DATA0
* 1: DATA2
* 2: DATA1
* 3: MDATA (non-Control), SETUP (Control)
*/
unsigned pid:2;
#define PID_DATA0 0
#define PID_DATA1 2
#define PID_DATA2 1
#define PID_MDATA 3
#define PID_SETUP 3
/* Do PING protocol when 1 */
unsigned dopng:1;
};
} hctsiz_t;
/**
* This union represents the bit fields in the Host Channel Interrupt Mask
* Register.
*/
typedef union {
/* raw register data */
uint32_t d32;
/* register bits */
struct {
unsigned xfercomp:1;
unsigned chhltd:1;
unsigned ahberr:1;
unsigned stall:1;
unsigned nak:1;
unsigned ack:1;
unsigned nyet:1;
unsigned xacterr:1;
unsigned bblerr:1;
unsigned frmovrun:1;
unsigned datatglerr:1;
unsigned reserved:21;
};
} hcintmsk_t;
typedef struct dwc_ctrl {
#define DMA_SIZE (64 * 1024)
void *dma_buffer;
uint32_t *hprt0;
} dwc_ctrl_t;
#define DWC2_INST(controller) ((dwc_ctrl_t *)((controller)->instance))
#define DWC2_REG(controller) ((dwc2_reg_t *)((controller)->reg_base))
typedef enum {
HCSTAT_DONE = 0,
HCSTAT_XFERERR,
HCSTAT_BABBLE,
HCSTAT_STALL,
HCSTAT_UNKNOW,
HCSTAT_TIMEOUT,
} hcstat_t;
#endif

View File

@ -0,0 +1,188 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Rockchip Electronics
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <usb/usb.h>
#include "generic_hub.h"
#include "dwc2_private.h"
#include "dwc2.h"
static int
dwc2_rh_port_status_changed(usbdev_t *const dev, const int port)
{
hprt_t hprt;
int changed;
dwc_ctrl_t *const dwc2 = DWC2_INST(dev->controller);
hprt.d32 = readl(dwc2->hprt0);
changed = hprt.prtconndet;
/* Clear connect detect flag */
if (changed) {
hprt.d32 &= HPRT_W1C_MASK;
hprt.prtconndet = 1;
writel(hprt.d32, dwc2->hprt0);
}
return changed;
}
static int
dwc2_rh_port_connected(usbdev_t *const dev, const int port)
{
hprt_t hprt;
dwc_ctrl_t *const dwc2 = DWC2_INST(dev->controller);
hprt.d32 = readl(dwc2->hprt0);
return hprt.prtconnsts;
}
static int
dwc2_rh_port_in_reset(usbdev_t *const dev, const int port)
{
hprt_t hprt;
dwc_ctrl_t *const dwc2 = DWC2_INST(dev->controller);
hprt.d32 = readl(dwc2->hprt0);
return hprt.prtrst;
}
static int
dwc2_rh_port_enabled(usbdev_t *const dev, const int port)
{
hprt_t hprt;
dwc_ctrl_t *const dwc2 = DWC2_INST(dev->controller);
hprt.d32 = readl(dwc2->hprt0);
return hprt.prtena;
}
static usb_speed
dwc2_rh_port_speed(usbdev_t *const dev, const int port)
{
hprt_t hprt;
dwc_ctrl_t *const dwc2 = DWC2_INST(dev->controller);
hprt.d32 = readl(dwc2->hprt0);
if (hprt.prtena) {
switch (hprt.prtspd) {
case PRTSPD_HIGH:
return HIGH_SPEED;
case PRTSPD_FULL:
return FULL_SPEED;
case PRTSPD_LOW:
return LOW_SPEED;
}
}
return -1;
}
static int
dwc2_rh_reset_port(usbdev_t *const dev, const int port)
{
hprt_t hprt;
dwc_ctrl_t *const dwc2 = DWC2_INST(dev->controller);
hprt.d32 = readl(dwc2->hprt0);
hprt.d32 &= HPRT_W1C_MASK;
hprt.prtrst = 1;
writel(hprt.d32, dwc2->hprt0);
/* Wait a bit while reset is active. */
mdelay(50);
/* Deassert reset. */
hprt.prtrst = 0;
writel(hprt.d32, dwc2->hprt0);
/*
* If reset and speed enum success the DWC2 core will set enable bit
* after port reset bit is deasserted
*/
mdelay(1);
hprt.d32 = readl(dwc2->hprt0);
usb_debug("%s reset port ok, hprt = 0x%08x\n", __func__, hprt.d32);
if (!hprt.prtena) {
usb_debug("%s enable port fail! hprt = 0x%08x\n",
__func__, hprt.d32);
return -1;
}
return 0;
}
static int
dwc2_rh_enable_port(usbdev_t *const dev, const int port)
{
hprt_t hprt;
dwc_ctrl_t *const dwc2 = DWC2_INST(dev->controller);
/* Power on the port */
hprt.d32 = readl(dwc2->hprt0);
hprt.d32 &= HPRT_W1C_MASK;
hprt.prtpwr = 1;
writel(hprt.d32, dwc2->hprt0);
return 0;
}
static int
dwc2_rh_disable_port(usbdev_t *const dev, const int port)
{
hprt_t hprt;
dwc_ctrl_t *const dwc2 = DWC2_INST(dev->controller);
hprt.d32 = readl(dwc2->hprt0);
hprt.d32 &= HPRT_W1C_MASK;
/* Disable the port*/
hprt.prtena = 1;
/* Power off the port */
hprt.prtpwr = 0;
writel(hprt.d32, dwc2->hprt0);
return 0;
}
static const generic_hub_ops_t dwc2_rh_ops = {
.hub_status_changed = NULL,
.port_status_changed = dwc2_rh_port_status_changed,
.port_connected = dwc2_rh_port_connected,
.port_in_reset = dwc2_rh_port_in_reset,
.port_enabled = dwc2_rh_port_enabled,
.port_speed = dwc2_rh_port_speed,
.enable_port = dwc2_rh_enable_port,
.disable_port = dwc2_rh_disable_port,
.start_port_reset = NULL,
.reset_port = dwc2_rh_reset_port,
};
void
dwc2_rh_init(usbdev_t *dev)
{
dwc_ctrl_t *const dwc2 = DWC2_INST(dev->controller);
/* we can set them here because a root hub _really_ shouldn't
appear elsewhere */
dev->address = 0;
dev->hub = -1;
dev->port = -1;
generic_hub_init(dev, 1, &dwc2_rh_ops);
usb_debug("dwc2_rh_init HPRT 0x%08x p = %p\n ",
readl(dwc2->hprt0), dwc2->hprt0);
usb_debug("DWC2: root hub init done\n");
}

View File

@ -34,6 +34,7 @@
#include "ohci.h"
#include "ehci.h"
#include "xhci.h"
#include "dwc2.h"
#include <usb/usbdisk.h>
#ifdef CONFIG_LP_USB_PCI
@ -182,6 +183,10 @@ hci_t *usb_add_mmio_hc(hc_type type, void *bar)
case EHCI:
return ehci_init((unsigned long)bar);
#endif
#ifdef CONFIG_LP_USB_DWC2
case DWC2:
return dwc2_init(bar);
#endif
#ifdef CONFIG_LP_USB_XHCI
case XHCI:
return xhci_init((unsigned long)bar);

View File

@ -207,7 +207,7 @@ struct usbdev {
void (*poll) (usbdev_t *dev);
};
typedef enum { OHCI = 0, UHCI = 1, EHCI = 2, XHCI = 3} hc_type;
typedef enum { OHCI = 0, UHCI = 1, EHCI = 2, XHCI = 3, DWC2 = 4} hc_type;
struct usbdev_hc {
hci_t *next;