844 lines
21 KiB
C
844 lines
21 KiB
C
/*
|
|
* HCD driver for ADM5120 SoC
|
|
*
|
|
* Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org)
|
|
*
|
|
* Based on the ADMtek 2.4 driver
|
|
* (C) Copyright 2003 Junius Chen <juniusc@admtek.com.tw>
|
|
* Which again was based on the ohci and uhci drivers.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/debugfs.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/init.h>
|
|
#include <linux/list.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/system.h>
|
|
#include <asm/byteorder.h>
|
|
#include <asm/mach-adm5120/adm5120_info.h>
|
|
|
|
#include "../core/hcd.h"
|
|
|
|
MODULE_DESCRIPTION("ADM5120 USB Host Controller Driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Jeroen Vreeken (pe1rxq@amsat.org)");
|
|
|
|
#define ADMHCD_REG_CONTROL 0x00
|
|
#define ADMHCD_REG_INTSTATUS 0x04
|
|
#define ADMHCD_REG_INTENABLE 0x08
|
|
#define ADMHCD_REG_HOSTCONTROL 0x10
|
|
#define ADMHCD_REG_FMINTERVAL 0x18
|
|
#define ADMHCD_REG_FMNUMBER 0x1c
|
|
#define ADMHCD_REG_LSTHRESH 0x70
|
|
#define ADMHCD_REG_RHDESCR 0x74
|
|
#define ADMHCD_REG_PORTSTATUS0 0x78
|
|
#define ADMHCD_REG_PORTSTATUS1 0x7c
|
|
#define ADMHCD_REG_HOSTHEAD 0x80
|
|
|
|
|
|
#define ADMHCD_NUMPORTS 2
|
|
|
|
#define ADMHCD_HOST_EN 0x00000001 /* Host enable */
|
|
#define ADMHCD_SW_INTREQ 0x00000002 /* request software int */
|
|
#define ADMHCD_SW_RESET 0x00000008 /* Reset */
|
|
|
|
#define ADMHCD_INT_TD 0x00100000 /* TD completed */
|
|
#define ADMHCD_INT_SW 0x20000000 /* software interrupt */
|
|
#define ADMHCD_INT_FATAL 0x40000000 /* Fatal interrupt */
|
|
#define ADMHCD_INT_ACT 0x80000000 /* Interrupt active */
|
|
|
|
#define ADMHCD_STATE_RST 0x00000000 /* bus state reset */
|
|
#define ADMHCD_STATE_RES 0x00000001 /* bus state resume */
|
|
#define ADMHCD_STATE_OP 0x00000002 /* bus state operational */
|
|
#define ADMHCD_STATE_SUS 0x00000003 /* bus state suspended */
|
|
#define ADMHCD_DMA_EN 0x00000004 /* enable dma engine */
|
|
|
|
#define ADMHCD_NPS 0x00000020 /* No Power Switch */
|
|
#define ADMHCD_LPSC 0x04000000 /* Local power switch change */
|
|
|
|
#define ADMHCD_CCS 0x00000001 /* current connect status */
|
|
#define ADMHCD_PES 0x00000002 /* port enable status */
|
|
#define ADMHCD_PSS 0x00000004 /* port suspend status */
|
|
#define ADMHCD_POCI 0x00000008 /* port overcurrent indicator */
|
|
#define ADMHCD_PRS 0x00000010 /* port reset status */
|
|
#define ADMHCD_PPS 0x00000100 /* port power status */
|
|
#define ADMHCD_LSDA 0x00000200 /* low speed device attached */
|
|
#define ADMHCD_CSC 0x00010000 /* connect status change */
|
|
#define ADMHCD_PESC 0x00020000 /* enable status change */
|
|
#define ADMHCD_PSSC 0x00040000 /* suspend status change */
|
|
#define ADMHCD_OCIC 0x00080000 /* overcurrent change*/
|
|
#define ADMHCD_PRSC 0x00100000 /* reset status change */
|
|
|
|
|
|
struct admhcd_ed {
|
|
/* Don't change first four, they used for DMA */
|
|
u32 control;
|
|
struct admhcd_td *tail;
|
|
struct admhcd_td *head;
|
|
struct admhcd_ed *next;
|
|
/* the rest is for the driver only: */
|
|
struct admhcd_td *cur;
|
|
struct usb_host_endpoint *ep;
|
|
struct urb *urb;
|
|
struct admhcd_ed *real;
|
|
} __attribute__ ((packed));
|
|
|
|
#define ADMHCD_ED_EPSHIFT 7 /* Shift for endpoint number */
|
|
#define ADMHCD_ED_INT 0x00000800 /* Is this an int endpoint */
|
|
#define ADMHCD_ED_SPEED 0x00002000 /* Is it a high speed dev? */
|
|
#define ADMHCD_ED_SKIP 0x00004000 /* Skip this ED */
|
|
#define ADMHCD_ED_FORMAT 0x00008000 /* Is this an isoc endpoint */
|
|
#define ADMHCD_ED_MAXSHIFT 16 /* Shift for max packet size */
|
|
|
|
struct admhcd_td {
|
|
/* Don't change first four, they are used for DMA */
|
|
u32 control;
|
|
u32 buffer;
|
|
u32 buflen;
|
|
struct admhcd_td *next;
|
|
/* the rest is for the driver only: */
|
|
struct urb *urb;
|
|
struct admhcd_td *real;
|
|
} __attribute__ ((packed));
|
|
|
|
#define ADMHCD_TD_OWN 0x80000000
|
|
#define ADMHCD_TD_TOGGLE 0x00000000
|
|
#define ADMHCD_TD_DATA0 0x01000000
|
|
#define ADMHCD_TD_DATA1 0x01800000
|
|
#define ADMHCD_TD_OUT 0x00200000
|
|
#define ADMHCD_TD_IN 0x00400000
|
|
#define ADMHCD_TD_SETUP 0x00000000
|
|
#define ADMHCD_TD_ISO 0x00010000
|
|
#define ADMHCD_TD_R 0x00040000
|
|
#define ADMHCD_TD_INTEN 0x00010000
|
|
|
|
static int admhcd_td_err[16] = {
|
|
0, /* No */
|
|
-EREMOTEIO, /* CRC */
|
|
-EREMOTEIO, /* bit stuff */
|
|
-EREMOTEIO, /* data toggle */
|
|
-EPIPE, /* stall */
|
|
-ETIMEDOUT, /* timeout */
|
|
-EPROTO, /* pid err */
|
|
-EPROTO, /* unexpected pid */
|
|
-EREMOTEIO, /* data overrun */
|
|
-EREMOTEIO, /* data underrun */
|
|
-ETIMEDOUT, /* 1010 */
|
|
-ETIMEDOUT, /* 1011 */
|
|
-EREMOTEIO, /* buffer overrun */
|
|
-EREMOTEIO, /* buffer underrun */
|
|
-ETIMEDOUT, /* 1110 */
|
|
-ETIMEDOUT, /* 1111 */
|
|
};
|
|
|
|
#define ADMHCD_TD_ERRMASK 0x38000000
|
|
#define ADMHCD_TD_ERRSHIFT 27
|
|
|
|
#define TD(td) ((struct admhcd_td *)(((u32)(td)) & ~0xf))
|
|
#define ED(ed) ((struct admhcd_ed *)(((u32)(ed)) & ~0xf))
|
|
|
|
struct admhcd {
|
|
spinlock_t lock;
|
|
|
|
void __iomem *addr_reg;
|
|
void __iomem *data_reg;
|
|
/* Root hub registers */
|
|
u32 rhdesca;
|
|
u32 rhdescb;
|
|
u32 rhstatus;
|
|
u32 rhport[2];
|
|
|
|
/* async schedule: control, bulk */
|
|
struct list_head async;
|
|
u32 base;
|
|
u32 dma_en;
|
|
unsigned long flags;
|
|
|
|
};
|
|
|
|
static inline struct admhcd *hcd_to_admhcd(struct usb_hcd *hcd)
|
|
{
|
|
return (struct admhcd *)(hcd->hcd_priv);
|
|
}
|
|
|
|
static inline struct usb_hcd *admhcd_to_hcd(struct admhcd *admhcd)
|
|
{
|
|
return container_of((void *)admhcd, struct usb_hcd, hcd_priv);
|
|
}
|
|
|
|
static char hcd_name[] = "adm5120-hcd";
|
|
|
|
static u32 admhcd_reg_get(struct admhcd *ahcd, int reg)
|
|
{
|
|
return *(volatile u32 *)KSEG1ADDR(ahcd->base+reg);
|
|
}
|
|
|
|
static void admhcd_reg_set(struct admhcd *ahcd, int reg, u32 val)
|
|
{
|
|
*(volatile u32 *)KSEG1ADDR(ahcd->base+reg) = val;
|
|
}
|
|
|
|
static void admhcd_lock(struct admhcd *ahcd)
|
|
{
|
|
spin_lock_irqsave(&ahcd->lock, ahcd->flags);
|
|
ahcd->dma_en = admhcd_reg_get(ahcd, ADMHCD_REG_HOSTCONTROL) &
|
|
ADMHCD_DMA_EN;
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_HOSTCONTROL, ADMHCD_STATE_OP);
|
|
}
|
|
|
|
static void admhcd_unlock(struct admhcd *ahcd)
|
|
{
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_HOSTCONTROL,
|
|
ADMHCD_STATE_OP | ahcd->dma_en);
|
|
spin_unlock_irqrestore(&ahcd->lock, ahcd->flags);
|
|
}
|
|
|
|
static struct admhcd_td *admhcd_td_alloc(struct admhcd_ed *ed, struct urb *urb)
|
|
{
|
|
struct admhcd_td *tdn, *td;
|
|
|
|
tdn = kmalloc(sizeof(struct admhcd_td), GFP_ATOMIC);
|
|
if (!tdn)
|
|
return NULL;
|
|
tdn->real = tdn;
|
|
tdn = (struct admhcd_td *)KSEG1ADDR(tdn);
|
|
memset(tdn, 0, sizeof(struct admhcd_td));
|
|
if (ed->cur == NULL) {
|
|
ed->cur = tdn;
|
|
ed->head = tdn;
|
|
ed->tail = tdn;
|
|
td = tdn;
|
|
} else {
|
|
/* Supply back the old tail and link in new td as tail */
|
|
td = TD(ed->tail);
|
|
TD(ed->tail)->next = tdn;
|
|
ed->tail = tdn;
|
|
}
|
|
td->urb = urb;
|
|
|
|
return td;
|
|
}
|
|
|
|
static void admhcd_td_free(struct admhcd_ed *ed, struct urb *urb)
|
|
{
|
|
struct admhcd_td *td, **tdp;
|
|
|
|
if (urb == NULL)
|
|
ed->control |= ADMHCD_ED_SKIP;
|
|
tdp = &ed->cur;
|
|
td = ed->cur;
|
|
do {
|
|
if (td->urb == urb)
|
|
break;
|
|
tdp = &td->next;
|
|
td = TD(td->next);
|
|
} while (td);
|
|
while (td && td->urb == urb) {
|
|
*tdp = TD(td->next);
|
|
kfree(td->real);
|
|
td = *tdp;
|
|
}
|
|
}
|
|
|
|
/* Find an endpoint's descriptor, if needed allocate a new one and link it
|
|
in the DMA chain
|
|
*/
|
|
static struct admhcd_ed *admhcd_get_ed(struct admhcd *ahcd,
|
|
struct usb_host_endpoint *ep, struct urb *urb)
|
|
{
|
|
struct admhcd_ed *hosthead;
|
|
struct admhcd_ed *found = NULL, *ed = NULL;
|
|
unsigned int pipe = urb->pipe;
|
|
|
|
admhcd_lock(ahcd);
|
|
hosthead = (struct admhcd_ed *)admhcd_reg_get(ahcd, ADMHCD_REG_HOSTHEAD);
|
|
if (hosthead) {
|
|
for (ed = hosthead;; ed = ED(ed->next)) {
|
|
if (ed->ep == ep) {
|
|
found = ed;
|
|
break;
|
|
}
|
|
if (ED(ed->next) == hosthead)
|
|
break;
|
|
}
|
|
}
|
|
if (!found) {
|
|
found = kmalloc(sizeof(struct admhcd_ed), GFP_ATOMIC);
|
|
if (!found)
|
|
goto out;
|
|
memset(found, 0, sizeof(struct admhcd_ed));
|
|
found->real = found;
|
|
found->ep = ep;
|
|
found = (struct admhcd_ed *)KSEG1ADDR(found);
|
|
found->control = usb_pipedevice(pipe) |
|
|
(usb_pipeendpoint(pipe) << ADMHCD_ED_EPSHIFT) |
|
|
(usb_pipeint(pipe) ? ADMHCD_ED_INT : 0) |
|
|
(urb->dev->speed == USB_SPEED_FULL ? ADMHCD_ED_SPEED : 0) |
|
|
(usb_pipeisoc(pipe) ? ADMHCD_ED_FORMAT : 0) |
|
|
(usb_maxpacket(urb->dev, pipe, usb_pipeout(pipe)) << ADMHCD_ED_MAXSHIFT);
|
|
/* Alloc first dummy td */
|
|
admhcd_td_alloc(found, NULL);
|
|
if (hosthead) {
|
|
found->next = hosthead;
|
|
ed->next = found;
|
|
} else {
|
|
found->next = found;
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_HOSTHEAD, (u32)found);
|
|
}
|
|
}
|
|
out:
|
|
admhcd_unlock(ahcd);
|
|
return found;
|
|
}
|
|
|
|
static struct admhcd_td *admhcd_td_fill(u32 control, struct admhcd_td *td,
|
|
dma_addr_t data, int len)
|
|
{
|
|
td->buffer = data;
|
|
td->buflen = len;
|
|
td->control = control;
|
|
return TD(td->next);
|
|
}
|
|
|
|
static void admhcd_ed_start(struct admhcd *ahcd, struct admhcd_ed *ed)
|
|
{
|
|
struct admhcd_td *td = ed->cur;
|
|
|
|
if (ed->urb)
|
|
return;
|
|
if (td->urb) {
|
|
ed->urb = td->urb;
|
|
while (1) {
|
|
td->control |= ADMHCD_TD_OWN;
|
|
if (TD(td->next)->urb != td->urb) {
|
|
td->buflen |= ADMHCD_TD_INTEN;
|
|
break;
|
|
}
|
|
td = TD(td->next);
|
|
}
|
|
}
|
|
ed->head = TD(ed->head);
|
|
ahcd->dma_en |= ADMHCD_DMA_EN;
|
|
}
|
|
|
|
static irqreturn_t adm5120hcd_irq(struct usb_hcd *hcd)
|
|
{
|
|
struct admhcd *ahcd = hcd_to_admhcd(hcd);
|
|
u32 intstatus;
|
|
|
|
intstatus = admhcd_reg_get(ahcd, ADMHCD_REG_INTSTATUS);
|
|
if (intstatus & ADMHCD_INT_FATAL) {
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_INTSTATUS, ADMHCD_INT_FATAL);
|
|
//
|
|
}
|
|
if (intstatus & ADMHCD_INT_SW) {
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_INTSTATUS, ADMHCD_INT_SW);
|
|
//
|
|
}
|
|
if (intstatus & ADMHCD_INT_TD) {
|
|
struct admhcd_ed *ed, *head;
|
|
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_INTSTATUS, ADMHCD_INT_TD);
|
|
|
|
head = (struct admhcd_ed *)admhcd_reg_get(ahcd, ADMHCD_REG_HOSTHEAD);
|
|
ed = head;
|
|
if (ed) do {
|
|
/* Is it a finished TD? */
|
|
if (ed->urb && !(ed->cur->control & ADMHCD_TD_OWN)) {
|
|
struct admhcd_td *td;
|
|
int error;
|
|
|
|
td = ed->cur;
|
|
error = (td->control & ADMHCD_TD_ERRMASK) >>
|
|
ADMHCD_TD_ERRSHIFT;
|
|
ed->urb->status = admhcd_td_err[error];
|
|
admhcd_td_free(ed, ed->urb);
|
|
// Calculate real length!!!
|
|
ed->urb->actual_length = ed->urb->transfer_buffer_length;
|
|
ed->urb->hcpriv = NULL;
|
|
usb_hcd_giveback_urb(hcd, ed->urb);
|
|
ed->urb = NULL;
|
|
}
|
|
admhcd_ed_start(ahcd, ed);
|
|
ed = ED(ed->next);
|
|
} while (ed != head);
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int admhcd_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep,
|
|
struct urb *urb, gfp_t mem_flags)
|
|
{
|
|
struct admhcd *ahcd = hcd_to_admhcd(hcd);
|
|
struct admhcd_ed *ed;
|
|
struct admhcd_td *td;
|
|
int size = 0, i, zero = 0, ret = 0;
|
|
unsigned int pipe = urb->pipe, toggle = 0;
|
|
dma_addr_t data = (dma_addr_t)urb->transfer_buffer;
|
|
int data_len = urb->transfer_buffer_length;
|
|
|
|
ed = admhcd_get_ed(ahcd, ep, urb);
|
|
if (!ed)
|
|
return -ENOMEM;
|
|
|
|
switch(usb_pipetype(pipe)) {
|
|
case PIPE_CONTROL:
|
|
size = 2;
|
|
case PIPE_INTERRUPT:
|
|
case PIPE_BULK:
|
|
default:
|
|
size += urb->transfer_buffer_length / 4096;
|
|
if (urb->transfer_buffer_length % 4096)
|
|
size++;
|
|
if (size == 0)
|
|
size++;
|
|
else if (urb->transfer_flags & URB_ZERO_PACKET &&
|
|
!(urb->transfer_buffer_length %
|
|
usb_maxpacket(urb->dev, pipe, usb_pipeout(pipe)))) {
|
|
size++;
|
|
zero = 1;
|
|
}
|
|
break;
|
|
case PIPE_ISOCHRONOUS:
|
|
size = urb->number_of_packets;
|
|
break;
|
|
}
|
|
|
|
admhcd_lock(ahcd);
|
|
/* Remember the first td */
|
|
td = admhcd_td_alloc(ed, urb);
|
|
if (!td) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
/* Allocate additionall tds first */
|
|
for (i = 1; i < size; i++) {
|
|
if (admhcd_td_alloc(ed, urb) == NULL) {
|
|
admhcd_td_free(ed, urb);
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (usb_gettoggle(urb->dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)))
|
|
toggle = ADMHCD_TD_TOGGLE;
|
|
else {
|
|
toggle = ADMHCD_TD_DATA0;
|
|
usb_settoggle(urb->dev, usb_pipeendpoint(pipe),
|
|
usb_pipeout(pipe), 1);
|
|
}
|
|
|
|
switch(usb_pipetype(pipe)) {
|
|
case PIPE_CONTROL:
|
|
td = admhcd_td_fill(ADMHCD_TD_SETUP | ADMHCD_TD_DATA0,
|
|
td, (dma_addr_t)urb->setup_packet, 8);
|
|
while (data_len > 0) {
|
|
td = admhcd_td_fill(ADMHCD_TD_DATA1
|
|
| ADMHCD_TD_R |
|
|
(usb_pipeout(pipe) ?
|
|
ADMHCD_TD_OUT : ADMHCD_TD_IN), td,
|
|
data, data_len % 4097);
|
|
data_len -= 4096;
|
|
}
|
|
admhcd_td_fill(ADMHCD_TD_DATA1 | (usb_pipeout(pipe) ?
|
|
ADMHCD_TD_IN : ADMHCD_TD_OUT), td,
|
|
data, 0);
|
|
break;
|
|
case PIPE_INTERRUPT:
|
|
case PIPE_BULK:
|
|
//info ok for interrupt?
|
|
i = 0;
|
|
while(data_len > 4096) {
|
|
td = admhcd_td_fill((usb_pipeout(pipe) ?
|
|
ADMHCD_TD_OUT :
|
|
ADMHCD_TD_IN | ADMHCD_TD_R) |
|
|
(i ? ADMHCD_TD_TOGGLE : toggle), td,
|
|
data, 4096);
|
|
data += 4096;
|
|
data_len -= 4096;
|
|
i++;
|
|
}
|
|
td = admhcd_td_fill((usb_pipeout(pipe) ?
|
|
ADMHCD_TD_OUT : ADMHCD_TD_IN) |
|
|
(i ? ADMHCD_TD_TOGGLE : toggle), td, data, data_len);
|
|
i++;
|
|
if (zero)
|
|
admhcd_td_fill((usb_pipeout(pipe) ?
|
|
ADMHCD_TD_OUT : ADMHCD_TD_IN) |
|
|
(i ? ADMHCD_TD_TOGGLE : toggle), td, 0, 0);
|
|
break;
|
|
case PIPE_ISOCHRONOUS:
|
|
for (i = 0; i < urb->number_of_packets; i++) {
|
|
td = admhcd_td_fill(ADMHCD_TD_ISO |
|
|
((urb->start_frame + i) & 0xffff), td,
|
|
data + urb->iso_frame_desc[i].offset,
|
|
urb->iso_frame_desc[i].length);
|
|
}
|
|
break;
|
|
}
|
|
urb->hcpriv = ed;
|
|
admhcd_ed_start(ahcd, ed);
|
|
out:
|
|
admhcd_unlock(ahcd);
|
|
return ret;
|
|
}
|
|
|
|
static int admhcd_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
|
|
{
|
|
struct admhcd *ahcd = hcd_to_admhcd(hcd);
|
|
struct admhcd_ed *ed;
|
|
|
|
admhcd_lock(ahcd);
|
|
|
|
ed = urb->hcpriv;
|
|
if (ed && ed->urb != urb)
|
|
admhcd_td_free(ed, urb);
|
|
|
|
admhcd_unlock(ahcd);
|
|
return 0;
|
|
}
|
|
|
|
static void admhcd_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
|
|
{
|
|
struct admhcd *ahcd = hcd_to_admhcd(hcd);
|
|
struct admhcd_ed *ed, *edt, *head;
|
|
|
|
admhcd_lock(ahcd);
|
|
|
|
head = (struct admhcd_ed *)admhcd_reg_get(ahcd, ADMHCD_REG_HOSTHEAD);
|
|
if (!head)
|
|
goto out;
|
|
for (ed = head; ED(ed->next) != head; ed = ED(ed->next))
|
|
if (ed->ep == ep)
|
|
break;
|
|
if (ed->ep != ep)
|
|
goto out;
|
|
while (ed->cur)
|
|
admhcd_td_free(ed, ed->cur->urb);
|
|
if (head == ed) {
|
|
if (ED(ed->next) == ed) {
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_HOSTHEAD, 0);
|
|
ahcd->dma_en = 0;
|
|
goto out_free;
|
|
}
|
|
head = ED(ed->next);
|
|
for (edt = head; ED(edt->next) != head; edt = ED(edt->next));
|
|
edt->next = ED(ed->next);
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_HOSTHEAD, (u32)ed->next);
|
|
goto out_free;
|
|
}
|
|
for (edt = head; edt->next != ed; edt = edt->next);
|
|
edt->next = ed->next;
|
|
out_free:
|
|
kfree(ed->real);
|
|
out:
|
|
admhcd_unlock(ahcd);
|
|
}
|
|
|
|
static int admhcd_get_frame_number(struct usb_hcd *hcd)
|
|
{
|
|
struct admhcd *ahcd = hcd_to_admhcd(hcd);
|
|
|
|
return admhcd_reg_get(ahcd, ADMHCD_REG_FMNUMBER) & 0x0000ffff;
|
|
}
|
|
|
|
static int admhcd_hub_status_data(struct usb_hcd *hcd, char *buf)
|
|
{
|
|
struct admhcd *ahcd = hcd_to_admhcd(hcd);
|
|
int port;
|
|
|
|
*buf = 0;
|
|
for (port = 0; port < ADMHCD_NUMPORTS; port++) {
|
|
if (admhcd_reg_get(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4) &
|
|
(ADMHCD_CSC | ADMHCD_PESC | ADMHCD_PSSC | ADMHCD_OCIC |
|
|
ADMHCD_PRSC))
|
|
*buf |= (1 << (port + 1));
|
|
}
|
|
return !!*buf;
|
|
}
|
|
|
|
static __u8 root_hub_hub_des[] = {
|
|
0x09, /* __u8 bLength; */
|
|
0x29, /* __u8 bDescriptorType; Hub-descriptor */
|
|
0x02, /* __u8 bNbrPorts; */
|
|
0x0a, 0x00, /* __u16 wHubCharacteristics; */
|
|
0x01, /* __u8 bPwrOn2pwrGood; 2ms */
|
|
0x00, /* __u8 bHubContrCurrent; 0mA */
|
|
0x00, /* __u8 DeviceRemovable; */
|
|
0xff, /* __u8 PortPwrCtrlMask; */
|
|
};
|
|
|
|
static int admhcd_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
|
|
u16 wIndex, char *buf, u16 wLength)
|
|
{
|
|
struct admhcd *ahcd = hcd_to_admhcd(hcd);
|
|
int retval = 0, len;
|
|
unsigned int port = wIndex -1;
|
|
|
|
switch (typeReq) {
|
|
|
|
case GetHubStatus:
|
|
*(__le32 *)buf = cpu_to_le32(0);
|
|
break;
|
|
case GetPortStatus:
|
|
if (port >= ADMHCD_NUMPORTS)
|
|
goto err;
|
|
*(__le32 *)buf = cpu_to_le32(
|
|
admhcd_reg_get(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4));
|
|
break;
|
|
case SetHubFeature: /* We don't implement these */
|
|
case ClearHubFeature:
|
|
switch (wValue) {
|
|
case C_HUB_OVER_CURRENT:
|
|
case C_HUB_LOCAL_POWER:
|
|
break;
|
|
default:
|
|
goto err;
|
|
}
|
|
case SetPortFeature:
|
|
if (port >= ADMHCD_NUMPORTS)
|
|
goto err;
|
|
|
|
switch (wValue) {
|
|
case USB_PORT_FEAT_SUSPEND:
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
|
|
ADMHCD_PSS);
|
|
break;
|
|
case USB_PORT_FEAT_RESET:
|
|
if (admhcd_reg_get(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4)
|
|
& ADMHCD_CCS) {
|
|
admhcd_reg_set(ahcd,
|
|
ADMHCD_REG_PORTSTATUS0 + port*4,
|
|
ADMHCD_PRS | ADMHCD_CSC);
|
|
mdelay(50);
|
|
admhcd_reg_set(ahcd,
|
|
ADMHCD_REG_PORTSTATUS0 + port*4,
|
|
ADMHCD_PES | ADMHCD_CSC);
|
|
}
|
|
break;
|
|
case USB_PORT_FEAT_POWER:
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
|
|
ADMHCD_PPS);
|
|
break;
|
|
default:
|
|
goto err;
|
|
}
|
|
break;
|
|
case ClearPortFeature:
|
|
if (port >= ADMHCD_NUMPORTS)
|
|
goto err;
|
|
|
|
switch (wValue) {
|
|
case USB_PORT_FEAT_ENABLE:
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
|
|
ADMHCD_CCS);
|
|
break;
|
|
case USB_PORT_FEAT_C_ENABLE:
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
|
|
ADMHCD_PESC);
|
|
break;
|
|
case USB_PORT_FEAT_SUSPEND:
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
|
|
ADMHCD_POCI);
|
|
break;
|
|
case USB_PORT_FEAT_C_SUSPEND:
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
|
|
ADMHCD_PSSC);
|
|
case USB_PORT_FEAT_POWER:
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
|
|
ADMHCD_LSDA);
|
|
break;
|
|
case USB_PORT_FEAT_C_CONNECTION:
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
|
|
ADMHCD_CSC);
|
|
break;
|
|
case USB_PORT_FEAT_C_OVER_CURRENT:
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
|
|
ADMHCD_OCIC);
|
|
break;
|
|
case USB_PORT_FEAT_C_RESET:
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
|
|
ADMHCD_PRSC);
|
|
break;
|
|
default:
|
|
goto err;
|
|
}
|
|
break;
|
|
case GetHubDescriptor:
|
|
len = min_t(unsigned int, sizeof(root_hub_hub_des), wLength);
|
|
memcpy(buf, root_hub_hub_des, len);
|
|
break;
|
|
default:
|
|
err:
|
|
retval = -EPIPE;
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
static struct hc_driver adm5120_hc_driver = {
|
|
.description = hcd_name,
|
|
.product_desc = "ADM5120 HCD",
|
|
.hcd_priv_size = sizeof(struct admhcd),
|
|
.irq = adm5120hcd_irq,
|
|
.flags = HCD_USB11,
|
|
.urb_enqueue = admhcd_urb_enqueue,
|
|
.urb_dequeue = admhcd_urb_dequeue,
|
|
.endpoint_disable = admhcd_endpoint_disable,
|
|
.get_frame_number = admhcd_get_frame_number,
|
|
.hub_status_data = admhcd_hub_status_data,
|
|
.hub_control = admhcd_hub_control,
|
|
};
|
|
|
|
#define resource_len(r) (((r)->end - (r)->start) + 1)
|
|
|
|
static int __init adm5120hcd_probe(struct platform_device *pdev)
|
|
{
|
|
struct usb_hcd *hcd;
|
|
struct admhcd *ahcd;
|
|
struct resource *addr, *data;
|
|
void __iomem *addr_reg;
|
|
void __iomem *data_reg;
|
|
|
|
int err = 0, irq;
|
|
|
|
if (pdev->num_resources < 3) {
|
|
err = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
if (pdev->dev.dma_mask) {
|
|
printk(KERN_DEBUG "no we won't dma\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
irq = platform_get_irq(pdev, 0);
|
|
data = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
addr = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
|
|
|
if (!addr || !data || irq < 0) {
|
|
err = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
if (!request_mem_region(addr->start, 2, hcd_name)) {
|
|
err = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
addr_reg = ioremap(addr->start, resource_len(addr));
|
|
if (addr_reg == NULL) {
|
|
err = -ENOMEM;
|
|
goto out_mem;
|
|
}
|
|
if (!request_mem_region(data->start, 2, hcd_name)) {
|
|
err = -EBUSY;
|
|
goto out_unmap;
|
|
}
|
|
|
|
data_reg = ioremap(data->start, resource_len(data));
|
|
if (data_reg == NULL) {
|
|
err = -ENOMEM;
|
|
goto out_mem;
|
|
}
|
|
|
|
hcd = usb_create_hcd(&adm5120_hc_driver, &pdev->dev, pdev->dev.bus_id);
|
|
if (!hcd)
|
|
goto out_mem;
|
|
|
|
hcd->rsrc_start = addr->start;
|
|
ahcd = hcd_to_admhcd(hcd);
|
|
|
|
spin_lock_init(&ahcd->lock);
|
|
INIT_LIST_HEAD(&ahcd->async);
|
|
|
|
ahcd->data_reg = data_reg;
|
|
ahcd->addr_reg = addr_reg;
|
|
|
|
hcd->product_desc = "ADM5120 HCD";
|
|
|
|
/* Initialise the HCD registers */
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_INTENABLE, 0);
|
|
mdelay(10);
|
|
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_CONTROL, ADMHCD_SW_RESET);
|
|
|
|
while (admhcd_reg_get(ahcd, ADMHCD_REG_CONTROL) & ADMHCD_SW_RESET)
|
|
mdelay(1);
|
|
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_CONTROL, ADMHCD_HOST_EN);
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_HOSTHEAD, 0x00000000);
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_FMINTERVAL, 0x20002edf);
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_LSTHRESH, 0x628);
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_INTENABLE,
|
|
ADMHCD_INT_ACT | ADMHCD_INT_FATAL | ADMHCD_INT_SW | ADMHCD_INT_TD);
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_INTSTATUS,
|
|
ADMHCD_INT_ACT | ADMHCD_INT_FATAL | ADMHCD_INT_SW | ADMHCD_INT_TD);
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_RHDESCR, ADMHCD_NPS | ADMHCD_LPSC);
|
|
admhcd_reg_set(ahcd, ADMHCD_REG_HOSTCONTROL, ADMHCD_STATE_OP);
|
|
|
|
err = usb_add_hcd(hcd, irq, IRQF_DISABLED);
|
|
if (err)
|
|
goto out_dev;
|
|
|
|
return 0;
|
|
|
|
out_dev:
|
|
usb_put_hcd(hcd);
|
|
out_unmap:
|
|
iounmap(addr_reg);
|
|
out_mem:
|
|
release_mem_region(pdev->resource[0].start, pdev->resource[0].end - pdev->resource[0].start);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static int __init_or_module adm5120hcd_remove(struct platform_device *pdev)
|
|
{
|
|
struct usb_hcd *hcd = platform_get_drvdata(pdev);
|
|
struct admhcd *ahcd;
|
|
|
|
if (!hcd)
|
|
return 0;
|
|
ahcd = hcd_to_admhcd(hcd);
|
|
usb_remove_hcd(hcd);
|
|
|
|
usb_put_hcd(hcd);
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver adm5120hcd_driver = {
|
|
.probe = adm5120hcd_probe,
|
|
.remove = adm5120hcd_remove,
|
|
.driver = {
|
|
.name = "adm5120-hcd",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
static int __init adm5120hcd_init(void)
|
|
{
|
|
if (usb_disabled())
|
|
return -ENODEV;
|
|
if (!adm5120_board.has_usb)
|
|
return -ENODEV;
|
|
|
|
return platform_driver_register(&adm5120hcd_driver);
|
|
}
|
|
|
|
static void __exit adm5120hcd_exit(void)
|
|
{
|
|
platform_driver_unregister(&adm5120hcd_driver);
|
|
}
|
|
|
|
module_init(adm5120hcd_init);
|
|
module_exit(adm5120hcd_exit);
|