/*
* Context: caller holds controller lock
*/
static void musb_g_ep0_giveback(struct musb *musb, struct usb_request *req)
{
musb_g_giveback(&musb->endpoints[0].ep_in, req, 0);
musb->ep0_state = MUSB_EP0_STAGE_SETUP;
}
/*
1. Find the last gpd HW has executed and update Tx_gpd_last[]
2. Set the flag for txstate to know that TX has been completed
ported from proc_qmu_tx() from test driver.
caller:qmu_interrupt after getting QMU done interrupt and TX is raised
*/
void qmu_done_tx(struct musb *musb, u8 ep_num, unsigned long flags)
{
TGPD *gpd = Tx_gpd_last[ep_num];
TGPD *gpd_current = (TGPD *) (os_readl(USB_QMU_TQCPR(ep_num)));
struct musb_ep *musb_ep = &musb->endpoints[ep_num].ep_in;
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_INFO, "[TXD]" "%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);
/*
gpd or Last gdp_current
| |
|-> GPD1 --> GPD2 --> GPD3 --> GPD4 --> GPD5 -|
|----------------------------------------------|
*/
qmu_printk(K_DEBUG, "[TXD]" "%s EP%d, Last=%p, Current=%p, End=%p\n",
__func__, ep_num, gpd, gpd_current, Tx_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, "[TXD][ERROR]" "%s gpd(%p) == gpd_current(%p)\n", __func__, gpd,
gpd_current);
return;
}
spin_unlock_irqrestore(&musb->lock, flags);
/* flush data from device to CPU */
dma_sync_single_for_cpu(musb->controller, virt_to_phys(gpd), sizeof(TGPD), DMA_FROM_DEVICE);
spin_lock_irqsave(&musb->lock, flags);
if (TGPD_IS_FLAGS_HWO(gpd)) {
qmu_printk(K_DEBUG, "[TXD]" "%s HWO=1, CPR=%x\n", __func__,
os_readl(USB_QMU_TQCPR(ep_num)));
BUG_ON(1);
}
while (gpd != gpd_current && !TGPD_IS_FLAGS_HWO(gpd)) {
qmu_printk(K_DEBUG, "[TXD]" "gpd=%p ->HWO=%d, BPD=%d, Next_GPD=%x, DataBuffer=%x, "
"BufferLen=%d request=%p\n", gpd, (u32) TGPD_GET_FLAG(gpd),
(u32) TGPD_GET_FORMAT(gpd), (u32) TGPD_GET_NEXT(gpd),
(u32) TGPD_GET_DATA(gpd), (u32) TGPD_GET_BUF_LEN(gpd), req);
if (!TGPD_GET_NEXT(gpd)) {
qmu_printk(K_ERR, "[TXD][ERROR]" "Next GPD is null!!\n");
/* BUG_ON(1); */
break;
}
gpd = TGPD_GET_NEXT(gpd);
spin_unlock_irqrestore(&musb->lock, flags);
/*flush data from device to CPU */
dma_sync_single_for_cpu(musb->controller,
(dma_addr_t) gpd, sizeof(TGPD), DMA_FROM_DEVICE);
spin_lock_irqsave(&musb->lock, flags);
gpd = phys_to_virt((unsigned long)gpd);
Tx_gpd_last[ep_num] = gpd;
musb_g_giveback(musb_ep, request, 0);
req = next_request(musb_ep);
request = &req->request;
}
if (gpd != gpd_current && TGPD_IS_FLAGS_HWO(gpd)) {
qmu_printk(K_ERR, "[TXD][ERROR]" "EP%d TQCSR=%x, TQSAR=%x, TQCPR=%x\n",
ep_num, os_readl(USB_QMU_TQCSR(ep_num)), os_readl(USB_QMU_TQSAR(ep_num)),
os_readl(USB_QMU_TQCPR(ep_num)));
qmu_printk(K_ERR, "[TXD][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_ERR, "[TXD][ERROR]" "HWO=%d, BPD=%d, Next_GPD=%x, DataBuffer=%x, "
"BufferLen=%d, Endpoint=%d\n", (DEV_UINT32) TGPD_GET_FLAG(gpd),
(DEV_UINT32) TGPD_GET_FORMAT(gpd), (DEV_UINT32) TGPD_GET_NEXT(gpd),
(DEV_UINT32) TGPD_GET_DATA(gpd), (DEV_UINT32) TGPD_GET_BUF_LEN(gpd),
(DEV_UINT32) TGPD_GET_EPaddr(gpd));
}
qmu_printk(K_DEBUG, "[TXD]" "%s EP%d, Last=%p, End=%p, complete\n", __func__,
ep_num, Tx_gpd_last[ep_num], Tx_gpd_end[ep_num]);
if (req != NULL) {
if (request->length == 0) {
qmu_printk(K_DEBUG, "[TXD]" "==Send ZLP== %p\n", req);
while (!(USB_ReadCsr32(U3D_TX1CSR0, req->epnum) & TX_FIFOFULL)) {
USB_WriteCsr32(U3D_TX1CSR0, req->epnum,
USB_ReadCsr32(U3D_TX1CSR0,
req->epnum) | TX_TXPKTRDY);
break;
}
qmu_printk(K_DEBUG,
"[TXD]" "Giveback ZLP of EP%d, actual:%d, length:%d %p\n",
req->epnum, request->actual, request->length, request);
musb_g_giveback(musb_ep, request, 0);
}
}
}
/*
1. Find the last gpd HW has executed and update Tx_gpd_last[]
2. Set the flag for txstate to know that TX has been completed
ported from proc_qmu_tx() from test driver.
caller:qmu_interrupt after getting QMU done interrupt and TX is raised
*/
void qmu_done_tx(struct musb *musb, u8 ep_num, unsigned long flags)
{
TGPD* gpd = Tx_gpd_last[ep_num];
TGPD* gpd_current = (TGPD*)(uintptr_t)(os_readl(USB_QMU_TQCPR(ep_num))); //QMU GPD address --> CPU DMA address
struct musb_ep *musb_ep = &musb->endpoints[ep_num].ep_in;
struct usb_request *request = NULL;
struct musb_request *req = NULL;
/*Transfer PHY addr got from QMU register to VIR addr*/
gpd_current = gpd_phys_to_virt((void *)gpd_current, USB_TX, ep_num);
/*
gpd or Last gdp_current
| |
|-> GPD1 --> GPD2 --> GPD3 --> GPD4 --> GPD5 -|
|----------------------------------------------|
*/
qmu_printk(K_DEBUG, "[TXD]""%s EP%d, Last=%p, Current=%p, End=%p\n",
__func__, ep_num, gpd, gpd_current, Tx_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, "[TXD]""%s gpd(%p) == gpd_current(%p)\n", __func__, gpd, \
gpd_current);
return;
}
if(TGPD_IS_FLAGS_HWO(gpd)) {
qmu_printk(K_DEBUG, "[TXD]""%s HWO=1, CPR=%x\n", __func__, os_readl(USB_QMU_TQCPR(ep_num)));
BUG_ON(1);
}
while (gpd!=gpd_current && !TGPD_IS_FLAGS_HWO(gpd)) {
qmu_printk(K_DEBUG, "[TXD]""gpd=%p ->HWO=%d, BPD=%d, Next_GPD=%lx, DataBuffer=%lx, "
"BufferLen=%d request=%p\n", gpd, (u32)TGPD_GET_FLAG(gpd), (u32)TGPD_GET_FORMAT(gpd), \
(uintptr_t)TGPD_GET_NEXT(gpd), (uintptr_t)TGPD_GET_DATA(gpd), (u32)TGPD_GET_BUF_LEN(gpd), req);
if(!TGPD_GET_NEXT(gpd)) {
qmu_printk(K_ERR, "[TXD][ERROR]""Next GPD is null!!\n");
//BUG_ON(1);
break;
}
gpd = TGPD_GET_NEXT(gpd);
gpd = gpd_phys_to_virt(gpd, USB_TX, ep_num);
/* trying to give_back the request to gadget driver. */
req = next_request(musb_ep);
if (!req) {
qmu_printk(K_INFO, "[TXD]""%s Cannot get next request of %d, "
"but QMU has done.\n", __func__, ep_num);
return;
} else {
request = &req->request;
}
Tx_gpd_last[ep_num] = gpd;
musb_g_giveback(musb_ep, request, 0);
req = next_request(musb_ep);
if (req != NULL) {
request = &req->request;
}
}
if(gpd!=gpd_current && TGPD_IS_FLAGS_HWO(gpd)) {
qmu_printk(K_ERR, "[TXD][ERROR]""EP%d TQCSR=%x, TQSAR=%x, TQCPR=%x\n",
ep_num, os_readl(USB_QMU_TQCSR(ep_num)), os_readl(USB_QMU_TQSAR(ep_num)),
os_readl(USB_QMU_TQCPR(ep_num)));
qmu_printk(K_ERR, "[TXD][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_ERR, "[TXD][ERROR]""HWO=%d, BPD=%d, Next_GPD=%lx, DataBuffer=%lx, "
"BufferLen=%d, Endpoint=%d\n", (u32)TGPD_GET_FLAG(gpd), \
(u32)TGPD_GET_FORMAT(gpd), (uintptr_t)TGPD_GET_NEXT(gpd), \
(uintptr_t)TGPD_GET_DATA(gpd), (u32)TGPD_GET_BUF_LEN(gpd), \
(u32)TGPD_GET_EPaddr(gpd));
}
qmu_printk(K_DEBUG, "[TXD]""%s EP%d, Last=%p, End=%p, complete\n", __func__,
ep_num, Tx_gpd_last[ep_num], Tx_gpd_end[ep_num]);
if (req != NULL) {
if (request->length == 0) {
u32 val = 0;
qmu_printk(K_DEBUG, "[TXD]""==Send ZLP== %p\n", req);
if (wait_for_value_us(USB_END_OFFSET(req->epnum, U3D_TX1CSR0), TX_FIFOEMPTY, TX_FIFOEMPTY, 1, 10) == RET_SUCCESS)
qmu_printk(K_DEBUG, "Tx[%d] 0x%x\n", req->epnum, USB_ReadCsr32(U3D_TX1CSR0, req->epnum));
else {
qmu_printk(K_CRIT, "Tx[%d] NOT FIFOEMPTY 0x%x\n", req->epnum, USB_ReadCsr32(U3D_TX1CSR0, req->epnum));
return;
}
/*Disable Tx_DMAREQEN*/
val = USB_ReadCsr32(U3D_TX1CSR0, req->epnum) & ~TX_DMAREQEN;
mb();
USB_WriteCsr32(U3D_TX1CSR0, req->epnum, val);
val = USB_ReadCsr32(U3D_TX1CSR0, req->epnum) | TX_TXPKTRDY;
mb();
USB_WriteCsr32(U3D_TX1CSR0, req->epnum, val);
qmu_printk(K_DEBUG, "[TXD]""Giveback ZLP of EP%d, actual:%d, length:%d %p\n",
req->epnum, request->actual, request->length, request);
musb_g_giveback(musb_ep, request, 0);
}
}
}
/*
* Context: caller holds controller lock
*/
static void musb_g_ep0_giveback(struct musb *musb, struct usb_request *req)
{
musb_g_giveback(&musb->endpoints[0].ep_in, req, 0);
}
/*
* Context: caller holds controller lock
*/
static void musb_g_ep0_giveback(struct musb *pThis, struct usb_request *req)
{
pThis->ep0_state = MGC_END0_STAGE_SETUP;
musb_g_giveback(&pThis->aLocalEnd[0].ep_in, req, 0);
}