/**
* flush_qmu - stop qmu and align qmu start ptr t0 current ptr
* @args - arg1: ep number, arg2: dir
*/
void mu3d_hal_flush_qmu(DEV_INT32 Q_num, USB_DIR dir)
{
TGPD *gpd_current;
qmu_printk(K_CRIT, "%s flush QMU %s\n", __func__, ((dir == USB_TX) ? "TX" : "RX"));
if (dir == USB_TX) {
/*Stop QMU */
mu3d_hal_stop_qmu(Q_num, USB_TX);
/*Get TX Queue Current Pointer Register */
gpd_current = (TGPD *) (os_readl(USB_QMU_TQCPR(Q_num)));
/*If gpd_current = 0, it means QMU has not yet to execute GPD in QMU. */
if (!gpd_current) {
/*Get TX Queue Starting Address Register */
gpd_current = (TGPD *) (os_readl(USB_QMU_TQSAR(Q_num)));
}
/*Switch physical to virtual address */
qmu_printk(K_CRIT, "gpd_current(P) %p\n", gpd_current);
gpd_current = phys_to_virt((unsigned long)gpd_current);
qmu_printk(K_CRIT, "gpd_current(V) %p\n", (void *)gpd_current);
/*Reset the TX GPD list state */
Tx_gpd_end[Q_num] = Tx_gpd_last[Q_num] = gpd_current;
gpd_ptr_align(dir, Q_num, Tx_gpd_end[Q_num]);
free_gpd(dir, Q_num);
/*FIXME: Do not know why... */
os_writel(USB_QMU_TQSAR(Q_num), virt_to_phys(Tx_gpd_last[Q_num]));
qmu_printk(K_ERR, "USB_QMU_TQSAR %x\n", os_readl(USB_QMU_TQSAR(Q_num)));
} else if (dir == USB_RX) {
/*Stop QMU */
mu3d_hal_stop_qmu(Q_num, USB_RX);
/*Get RX Queue Current Pointer Register */
gpd_current = (TGPD *) (os_readl(USB_QMU_RQCPR(Q_num)));
if (!gpd_current) {
/*Get RX Queue Starting Address Register */
gpd_current = (TGPD *) (os_readl(USB_QMU_RQSAR(Q_num)));
}
/*Switch physical to virtual address */
qmu_printk(K_CRIT, "gpd_current(P) %p\n", gpd_current);
gpd_current = phys_to_virt((unsigned long)gpd_current);
qmu_printk(K_CRIT, "gpd_current(V) %p\n", (void *)gpd_current);
/*Reset the RX GPD list state */
Rx_gpd_end[Q_num] = Rx_gpd_last[Q_num] = gpd_current;
gpd_ptr_align(dir, Q_num, Rx_gpd_end[Q_num]);
free_gpd(dir, Q_num);
/*FIXME: Do not know why... */
os_writel(USB_QMU_RQSAR(Q_num), virt_to_phys(Rx_gpd_end[Q_num]));
qmu_printk(K_ERR, "USB_QMU_RQSAR %x\n", os_readl(USB_QMU_RQSAR(Q_num)));
}
}
/**
* mu3d_hal_init_qmu - initialize qmu
*
*/
void mu3d_hal_init_qmu(void)
{
DEV_UINT32 i;
DEV_UINT32 QCR = 0;
/* Initialize QMU Tx/Rx start address. */
for (i = 1; i <= MAX_QMU_EP; i++) {
os_printk(K_DEBUG, "==EP[%d]==Start addr RXQ=0x%08x, TXQ=0x%08x\n", i,
mu3d_hal_gpd_virt_to_phys(Rx_gpd_head[i], USB_RX, i),
mu3d_hal_gpd_virt_to_phys(Tx_gpd_head[i], USB_TX, i));
QCR |= QMU_RX_EN(i);
QCR |= QMU_TX_EN(i);
os_writel(USB_QMU_RQSAR(i), mu3d_hal_gpd_virt_to_phys(Rx_gpd_head[i], USB_RX, i));
os_writel(USB_QMU_TQSAR(i), mu3d_hal_gpd_virt_to_phys(Tx_gpd_head[i], USB_TX, i));
Tx_gpd_end[i] = Tx_gpd_last[i] = Tx_gpd_head[i];
Rx_gpd_end[i] = Rx_gpd_last[i] = Rx_gpd_head[i];
gpd_ptr_align(USB_TX, i, Tx_gpd_end[i]);
gpd_ptr_align(USB_RX, i, Rx_gpd_end[i]);
}
/* Enable QMU Tx/Rx. */
os_writel(U3D_QGCSR, QCR);
os_writel(U3D_QIESR0, QCR);
/* Enable QMU interrupt. */
os_writel(U3D_QIESR1,
TXQ_EMPTY_IESR | TXQ_CSERR_IESR | TXQ_LENERR_IESR | RXQ_EMPTY_IESR |
RXQ_CSERR_IESR | RXQ_LENERR_IESR | RXQ_ZLPERR_IESR);
os_writel(U3D_EPIESR, EP0ISR);
}
/*
When receiving RXQ done interrupt, qmu_interrupt calls this function.
1. Traverse GPD/BD data structures to count actual transferred length.
2. Set the done flag to notify rxstate_qmu() to report status to upper gadget driver.
ported from proc_qmu_rx() from test driver.
caller:qmu_interrupt after getting QMU done interrupt and TX is raised
*/
void qmu_done_rx(struct musb *musb, u8 ep_num, unsigned long flags)
{
TGPD *gpd = Rx_gpd_last[ep_num];
TGPD *gpd_current = (TGPD *) (os_readl(USB_QMU_RQCPR(ep_num)));
struct musb_ep *musb_ep = &musb->endpoints[ep_num].ep_out;
struct usb_request *request = NULL;
struct musb_request *req;
/* trying to give_back the request to gadget driver. */
req = next_request(musb_ep);
if (!req) {
qmu_printk(K_ERR, "[RXD]" "%s Cannot get next request of %d, "
"but QMU has done.\n", __func__, ep_num);
return;
} else {
request = &req->request;
}
/*Transfer PHY addr got from QMU register to VIR addr */
gpd_current = phys_to_virt((unsigned long)gpd_current);
qmu_printk(K_DEBUG, "[RXD]" "%s EP%d, Last=%p, Current=%p, End=%p\n",
__func__, ep_num, gpd, gpd_current, Rx_gpd_end[ep_num]);
/*gpd_current should at least point to the next GPD to the previous last one. */
if (gpd == gpd_current) {
qmu_printk(K_ERR, "[RXD][ERROR]" "%s gpd(%p) == gpd_current(%p)\n", __func__, gpd,
gpd_current);
qmu_printk(K_ERR, "[RXD][ERROR]" "EP%d RQCSR=%x, RQSAR=%x, RQCPR=%x, RQLDPR=%x\n",
ep_num, os_readl(USB_QMU_RQCSR(ep_num)), os_readl(USB_QMU_RQSAR(ep_num)),
os_readl(USB_QMU_RQCPR(ep_num)), os_readl(USB_QMU_RQLDPR(ep_num)));
qmu_printk(K_ERR, "[RXD][ERROR]" "QCR0=%x, QCR1=%x, QCR2=%x, QCR3=%x, "
"QGCSR=%x\n", os_readl(U3D_QCR0), os_readl(U3D_QCR1), os_readl(U3D_QCR2),
os_readl(U3D_QCR3), os_readl(U3D_QGCSR));
qmu_printk(K_INFO, "[RXD][ERROR]" "HWO=%d, Next_GPD=%x ,DataBufLen=%d, "
"DataBuf=%x, RecvLen=%d, Endpoint=%d\n",
(DEV_UINT32) TGPD_GET_FLAG(gpd), (DEV_UINT32) TGPD_GET_NEXT(gpd),
(DEV_UINT32) TGPD_GET_DataBUF_LEN(gpd), (DEV_UINT32) TGPD_GET_DATA(gpd),
(DEV_UINT32) TGPD_GET_BUF_LEN(gpd), (DEV_UINT32) TGPD_GET_EPaddr(gpd));
return;
}
spin_unlock_irqrestore(&musb->lock, flags);
/* invalidate GPD data in CPU */
dma_sync_single_for_cpu(musb->controller, virt_to_phys(gpd), sizeof(TGPD), DMA_FROM_DEVICE);
spin_lock_irqsave(&musb->lock, flags);
if (!gpd || !gpd_current) {
qmu_printk(K_ERR, "[RXD][ERROR]" "%s EP%d, gpd=%p, gpd_current=%p, ishwo=%d, \
rx_gpd_last=%p, RQCPR=0x%x\n", __func__, ep_num, gpd, gpd_current, ((gpd == NULL) ? 999 : TGPD_IS_FLAGS_HWO(gpd)), Rx_gpd_last[ep_num], os_readl(USB_QMU_RQCPR(ep_num)));
return;
}
/*
When receiving RXQ done interrupt, qmu_interrupt calls this function.
1. Traverse GPD/BD data structures to count actual transferred length.
2. Set the done flag to notify rxstate_qmu() to report status to upper gadget driver.
ported from proc_qmu_rx() from test driver.
caller:qmu_interrupt after getting QMU done interrupt and TX is raised
*/
void qmu_done_rx(struct musb *musb, u8 ep_num, unsigned long flags)
{
TGPD* gpd = Rx_gpd_last[ep_num];
TGPD* gpd_current = (TGPD*)(uintptr_t)(os_readl(USB_QMU_RQCPR(ep_num))); //QMU GPD address --> CPU DMA address
struct musb_ep *musb_ep = &musb->endpoints[ep_num].ep_out;
struct usb_request *request = NULL;
struct musb_request *req;
//trying to give_back the request to gadget driver.
req = next_request(musb_ep);
if (!req) {
qmu_printk(K_ERR, "[RXD]""%s Cannot get next request of %d, "
"but QMU has done.\n", __func__, ep_num);
return;
} else {
request = &req->request;
}
/*Transfer PHY addr got from QMU register to VIR addr*/
gpd_current = gpd_phys_to_virt(gpd_current, USB_RX, ep_num);
qmu_printk(K_DEBUG, "[RXD]""%s EP%d, Last=%p, Current=%p, End=%p\n",
__func__, ep_num, gpd, gpd_current, Rx_gpd_end[ep_num]);
/*gpd_current should at least point to the next GPD to the previous last one.*/
if (gpd == gpd_current) {
qmu_printk(K_ERR, "[RXD][ERROR]""%s gpd(%p) == gpd_current(%p)\n", __func__, gpd, \
gpd_current);
qmu_printk(K_ERR, "[RXD][ERROR]""EP%d RQCSR=%x, RQSAR=%x, RQCPR=%x, RQLDPR=%x\n",
ep_num, os_readl(USB_QMU_RQCSR(ep_num)), os_readl(USB_QMU_RQSAR(ep_num)),
os_readl(USB_QMU_RQCPR(ep_num)), os_readl(USB_QMU_RQLDPR(ep_num)));
qmu_printk(K_ERR, "[RXD][ERROR]""QCR0=%x, QCR1=%x, QCR2=%x, QCR3=%x, "
"QGCSR=%x\n", os_readl(U3D_QCR0), os_readl(U3D_QCR1), os_readl(U3D_QCR2), \
os_readl(U3D_QCR3), os_readl(U3D_QGCSR));
qmu_printk(K_INFO,"[RXD][ERROR]""HWO=%d, Next_GPD=%lx ,DataBufLen=%d, "
"DataBuf=%lx, RecvLen=%d, Endpoint=%d\n",
(u32)TGPD_GET_FLAG(gpd), (uintptr_t)TGPD_GET_NEXT(gpd),
(u32)TGPD_GET_DataBUF_LEN(gpd), (uintptr_t)TGPD_GET_DATA(gpd),
(u32)TGPD_GET_BUF_LEN(gpd), (u32)TGPD_GET_EPaddr(gpd));
return;
}
if(!gpd || !gpd_current) {
qmu_printk(K_ERR, "[RXD][ERROR]""%s EP%d, gpd=%p, gpd_current=%p, ishwo=%d, \
rx_gpd_last=%p, RQCPR=0x%x\n", __func__,
ep_num, gpd, gpd_current, ((gpd==NULL) ? 999 : TGPD_IS_FLAGS_HWO(gpd)),
Rx_gpd_last[ep_num], os_readl(USB_QMU_RQCPR(ep_num)));
return;
}
void mu3d_hal_flush_qmu(DEV_INT32 Q_num, USB_DIR dir)
{
TGPD* gpd_current;
struct USB_REQ *req = mu3d_hal_get_req(Q_num, dir);
os_printk(K_CRIT,"%s flush QMU %s\n", __func__, ((dir==USB_TX)?"TX":"RX"));
if (dir == USB_TX) {
/*Stop QMU*/
mu3d_hal_stop_qmu(Q_num, USB_TX);
/*Get TX Queue Current Pointer Register*/
gpd_current = (TGPD*)(uintptr_t)(os_readl(USB_QMU_TQCPR(Q_num))); //QMU GPD address --> CPU DMA address
/*If gpd_current = 0, it means QMU has not yet to execute GPD in QMU.*/
if(!gpd_current){
/*Get TX Queue Starting Address Register*/
gpd_current = (TGPD*)(uintptr_t)(os_readl(USB_QMU_TQSAR(Q_num))); //QMU GPD address --> CPU DMA address
}
/*Switch physical to virtual address*/
os_printk(K_CRIT,"gpd_current(P) %p\n", gpd_current);
gpd_current = gpd_phys_to_virt(gpd_current, USB_TX, Q_num);
os_printk(K_CRIT,"gpd_current(V) %p\n", gpd_current);
/*Reset the TX GPD list state*/
Tx_gpd_end[Q_num] = Tx_gpd_last[Q_num] = gpd_current;
gpd_ptr_align(dir,Q_num,Tx_gpd_end[Q_num]);
free_gpd(dir,Q_num);
/*FIXME: Do not know why...*/
os_writel(USB_QMU_TQSAR(Q_num), mu3d_hal_gpd_virt_to_phys(Tx_gpd_last[Q_num], USB_TX, Q_num));
os_printk(K_ERR,"USB_QMU_TQSAR %x\n", os_readl(USB_QMU_TQSAR(Q_num)));
req->complete=true;
//os_printk(K_ERR,"TxQ %d Flush Now!\n", Q_num);
} else if(dir == USB_RX) {
/*Stop QMU*/
mu3d_hal_stop_qmu(Q_num, USB_RX);
/*Get RX Queue Current Pointer Register*/
gpd_current = (TGPD*)(uintptr_t)(os_readl(USB_QMU_RQCPR(Q_num))); //QMU GPD address --> CPU DMA address
if(!gpd_current){
/*Get RX Queue Starting Address Register*/
gpd_current = (TGPD*)(uintptr_t)(os_readl(USB_QMU_RQSAR(Q_num))); //QMU GPD address --> CPU DMA address
}
/*Switch physical to virtual address*/
os_printk(K_CRIT,"gpd_current(P) %p\n", gpd_current);
gpd_current = gpd_phys_to_virt(gpd_current,USB_RX,Q_num);
os_printk(K_CRIT,"gpd_current(V) %p\n", gpd_current);
/*Reset the RX GPD list state*/
Rx_gpd_end[Q_num] = Rx_gpd_last[Q_num] = gpd_current;
gpd_ptr_align(dir,Q_num,Rx_gpd_end[Q_num]);
free_gpd(dir,Q_num);
/*FIXME: Do not know why...*/
os_writel(USB_QMU_RQSAR(Q_num), mu3d_hal_gpd_virt_to_phys(Rx_gpd_end[Q_num], USB_RX, Q_num));
os_printk(K_ERR,"USB_QMU_RQSAR %x\n", os_readl(USB_QMU_RQSAR(Q_num)));
req->complete=true;
//os_printk(K_ERR,"RxQ %d Flush Now!\n", Q_num);
}
}
/**
* flush_qmu - stop qmu and align qmu start ptr t0 current ptr
* @args - arg1: ep number, arg2: dir
*/
void _ex_mu3d_hal_flush_qmu(DEV_INT32 Q_num, USB_DIR dir)
{
TGPD* gpd_current;
qmu_printk(K_CRIT, "%s flush QMU %s-EP[%d]\n", __func__, ((dir==USB_TX)?"TX":"RX"), Q_num);
if (dir == USB_TX) {
/*Stop QMU*/
mu3d_hal_stop_qmu(Q_num, USB_TX);
/*Get TX Queue Current Pointer Register*/
gpd_current = (TGPD*)(uintptr_t)(os_readl(USB_QMU_TQCPR(Q_num))); //QMU GPD address --> CPU DMA address
/*If gpd_current = 0, it means QMU has not yet to execute GPD in QMU.*/
if(!gpd_current){
/*Get TX Queue Starting Address Register*/
gpd_current = (TGPD*)(uintptr_t)(os_readl(USB_QMU_TQSAR(Q_num))); //QMU GPD address --> CPU DMA address
}
/*
* Even if the GPD pointer got from SAR is corrupted. We should use the head of GPD list.
* We know that Tx_gpd_head[Q_num] is always correct.
*/
if(!gpd_current) {
gpd_current = Tx_gpd_head[Q_num];
qmu_printk(K_CRIT, "gpd is null, so use the head of GPD list %p\n", gpd_current);
} else {
/*Switch physical to virtual address*/
qmu_printk(K_CRIT, "gpd_current(P) %p\n", gpd_current);
gpd_current = gpd_phys_to_virt((void *)gpd_current,USB_TX, Q_num);
qmu_printk(K_CRIT, "gpd_current(V) %p\n", (void *)gpd_current);
}
/*Reset the TX GPD list state*/
Tx_gpd_end[Q_num] = Tx_gpd_last[Q_num] = gpd_current;
gpd_ptr_align(dir,Q_num,Tx_gpd_end[Q_num]);
free_gpd(dir,Q_num);
/*FIXME: Do not know why...*/
os_writel(USB_QMU_TQSAR(Q_num), mu3d_hal_gpd_virt_to_phys(Tx_gpd_last[Q_num], USB_TX, Q_num));
qmu_printk(K_ERR, "USB_QMU_TQSAR %x\n", os_readl(USB_QMU_TQSAR(Q_num)));
} else if(dir == USB_RX) {
/*Stop QMU*/
mu3d_hal_stop_qmu(Q_num, USB_RX);
/*Get RX Queue Current Pointer Register*/
gpd_current = (TGPD*)(uintptr_t)(os_readl(USB_QMU_RQCPR(Q_num))); //QMU GPD address --> CPU DMA address
if(!gpd_current){
/*Get RX Queue Starting Address Register*/
gpd_current = (TGPD*)(uintptr_t)(os_readl(USB_QMU_RQSAR(Q_num))); //QMU GPD address --> CPU DMA address
}
/*
* Even if the GPD pointer got from SAR is corrupted. We should use the head of GPD list.
* We know that Rx_gpd_head[Q_num] is always correct.
*/
if(!gpd_current) {
gpd_current = Rx_gpd_head[Q_num];
qmu_printk(K_CRIT, "gpd is null, so use the head of GPD list %p\n", gpd_current);
} else {
/*Switch physical to virtual address*/
qmu_printk(K_CRIT, "gpd_current(P) %p\n", gpd_current);
gpd_current = gpd_phys_to_virt((void *)gpd_current, USB_RX, Q_num);
qmu_printk(K_CRIT, "gpd_current(V) %p\n", (void *)gpd_current);
}
/*Reset the RX GPD list state*/
Rx_gpd_end[Q_num] = Rx_gpd_last[Q_num] = gpd_current;
gpd_ptr_align(dir,Q_num,Rx_gpd_end[Q_num]);
free_gpd(dir,Q_num);
/*FIXME: Do not know why...*/
os_writel(USB_QMU_RQSAR(Q_num), mu3d_hal_gpd_virt_to_phys(Rx_gpd_end[Q_num], USB_RX, Q_num));
qmu_printk(K_ERR,"USB_QMU_RQSAR %x\n", os_readl(USB_QMU_RQSAR(Q_num)));
}
}