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Commit 29667f30 authored by Mark Einon's avatar Mark Einon Committed by Greg Kroah-Hartman
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staging: et131x: et1310_rx.c checkpatch fixes 

Signed-off-by: default avatarMark Einon <mark.einon@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 4ce6cc50
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Showing with 96 additions and 97 deletions
drivers/staging/et131x/et1310_rx.c
View file @ 29667f30
......@@ -88,7 +88,23 @@
#include "et1310_rx.h"
#include "et131x.h"
void nic_return_rfd(struct et131x_adapter *etdev, struct rfd *rfd);
static inline u32 bump_fbr(u32 *fbr, u32 limit)
{
u32 v = *fbr;
v++;
/* This works for all cases where limit < 1024. The 1023 case
works because 1023++ is 1024 which means the if condition is not
taken but the carry of the bit into the wrap bit toggles the wrap
value correctly */
if ((v & ET_DMA10_MASK) > limit) {
v &= ~ET_DMA10_MASK;
v ^= ET_DMA10_WRAP;
}
/* For the 1023 case */
v &= (ET_DMA10_MASK|ET_DMA10_WRAP);
*fbr = v;
return v;
}
/**
* et131x_rx_dma_memory_alloc
......@@ -246,7 +262,7 @@ int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter)
&rx_ring->Fbr1MemPa[i]);
if (!rx_ring->Fbr1MemVa[i]) {
dev_err(&adapter->pdev->dev,
dev_err(&adapter->pdev->dev,
"Could not alloc memory\n");
return -ENOMEM;
}
......@@ -491,7 +507,7 @@ void et131x_rx_dma_memory_free(struct et131x_adapter *adapter)
/* Free Packet Status Ring */
if (rx_ring->pPSRingVa) {
pktStatRingSize =
sizeof(struct pkt_stat_desc) * adapter->rx_ring.PsrNumEntries;
sizeof(struct pkt_stat_desc) * adapter->rx_ring.PsrNumEntries;
pci_free_consistent(adapter->pdev, pktStatRingSize,
rx_ring->pPSRingVa, rx_ring->pPSRingPa);
......@@ -707,6 +723,82 @@ void SetRxDmaTimer(struct et131x_adapter *etdev)
}
}
/**
* NICReturnRFD - Recycle a RFD and put it back onto the receive list
* @etdev: pointer to our adapter
* @rfd: pointer to the RFD
*/
void nic_return_rfd(struct et131x_adapter *etdev, struct rfd *rfd)
{
struct rx_ring *rx_local = &etdev->rx_ring;
struct rxdma_regs __iomem *rx_dma = &etdev->regs->rxdma;
u16 bi = rfd->bufferindex;
u8 ri = rfd->ringindex;
unsigned long flags;
/* We don't use any of the OOB data besides status. Otherwise, we
* need to clean up OOB data
*/
if (
#ifdef USE_FBR0
(ri == 0 && bi < rx_local->Fbr0NumEntries) ||
#endif
(ri == 1 && bi < rx_local->Fbr1NumEntries)) {
spin_lock_irqsave(&etdev->FbrLock, flags);
if (ri == 1) {
struct fbr_desc *next =
(struct fbr_desc *) (rx_local->pFbr1RingVa) +
INDEX10(rx_local->local_Fbr1_full);
/* Handle the Free Buffer Ring advancement here. Write
* the PA / Buffer Index for the returned buffer into
* the oldest (next to be freed)FBR entry
*/
next->addr_hi = rx_local->fbr[1]->bus_high[bi];
next->addr_lo = rx_local->fbr[1]->bus_low[bi];
next->word2 = bi;
writel(bump_fbr(&rx_local->local_Fbr1_full,
rx_local->Fbr1NumEntries - 1),
&rx_dma->fbr1_full_offset);
}
#ifdef USE_FBR0
else {
struct fbr_desc *next = (struct fbr_desc *)
rx_local->pFbr0RingVa +
INDEX10(rx_local->local_Fbr0_full);
/* Handle the Free Buffer Ring advancement here. Write
* the PA / Buffer Index for the returned buffer into
* the oldest (next to be freed) FBR entry
*/
next->addr_hi = rx_local->fbr[0]->bus_high[bi];
next->addr_lo = rx_local->fbr[0]->bus_low[bi];
next->word2 = bi;
writel(bump_fbr(&rx_local->local_Fbr0_full,
rx_local->Fbr0NumEntries - 1),
&rx_dma->fbr0_full_offset);
}
#endif
spin_unlock_irqrestore(&etdev->FbrLock, flags);
} else {
dev_err(&etdev->pdev->dev,
"NICReturnRFD illegal Buffer Index returned\n");
}
/* The processing on this RFD is done, so put it back on the tail of
* our list
*/
spin_lock_irqsave(&etdev->rcv_lock, flags);
list_add_tail(&rfd->list_node, &rx_local->RecvList);
rx_local->nReadyRecv++;
spin_unlock_irqrestore(&etdev->rcv_lock, flags);
WARN_ON(rx_local->nReadyRecv > rx_local->NumRfd);
}
/**
* et131x_rx_dma_disable - Stop of Rx_DMA on the ET1310
* @etdev: pointer to our adapter structure
......@@ -776,7 +868,7 @@ void et131x_rx_dma_enable(struct et131x_adapter *etdev)
* the packet to it, puts the RFD in the RecvPendList, and also returns
* the pointer to the RFD.
*/
struct rfd * nic_rx_pkts(struct et131x_adapter *etdev)
struct rfd *nic_rx_pkts(struct et131x_adapter *etdev)
{
struct rx_ring *rx_local = &etdev->rx_ring;
struct rx_status_block *status;
......@@ -1059,96 +1151,3 @@ void et131x_handle_recv_interrupt(struct et131x_adapter *etdev)
etdev->rx_ring.UnfinishedReceives = false;
}
static inline u32 bump_fbr(u32 *fbr, u32 limit)
{
u32 v = *fbr;
v++;
/* This works for all cases where limit < 1024. The 1023 case
works because 1023++ is 1024 which means the if condition is not
taken but the carry of the bit into the wrap bit toggles the wrap
value correctly */
if ((v & ET_DMA10_MASK) > limit) {
v &= ~ET_DMA10_MASK;
v ^= ET_DMA10_WRAP;
}
/* For the 1023 case */
v &= (ET_DMA10_MASK|ET_DMA10_WRAP);
*fbr = v;
return v;
}
/**
* NICReturnRFD - Recycle a RFD and put it back onto the receive list
* @etdev: pointer to our adapter
* @rfd: pointer to the RFD
*/
void nic_return_rfd(struct et131x_adapter *etdev, struct rfd *rfd)
{
struct rx_ring *rx_local = &etdev->rx_ring;
struct rxdma_regs __iomem *rx_dma = &etdev->regs->rxdma;
u16 bi = rfd->bufferindex;
u8 ri = rfd->ringindex;
unsigned long flags;
/* We don't use any of the OOB data besides status. Otherwise, we
* need to clean up OOB data
*/
if (
#ifdef USE_FBR0
(ri == 0 && bi < rx_local->Fbr0NumEntries) ||
#endif
(ri == 1 && bi < rx_local->Fbr1NumEntries)) {
spin_lock_irqsave(&etdev->FbrLock, flags);
if (ri == 1) {
struct fbr_desc *next =
(struct fbr_desc *) (rx_local->pFbr1RingVa) +
INDEX10(rx_local->local_Fbr1_full);
/* Handle the Free Buffer Ring advancement here. Write
* the PA / Buffer Index for the returned buffer into
* the oldest (next to be freed)FBR entry
*/
next->addr_hi = rx_local->fbr[1]->bus_high[bi];
next->addr_lo = rx_local->fbr[1]->bus_low[bi];
next->word2 = bi;
writel(bump_fbr(&rx_local->local_Fbr1_full,
rx_local->Fbr1NumEntries - 1),
&rx_dma->fbr1_full_offset);
}
#ifdef USE_FBR0
else {
struct fbr_desc *next = (struct fbr_desc *)
rx_local->pFbr0RingVa +
INDEX10(rx_local->local_Fbr0_full);
/* Handle the Free Buffer Ring advancement here. Write
* the PA / Buffer Index for the returned buffer into
* the oldest (next to be freed) FBR entry
*/
next->addr_hi = rx_local->fbr[0]->bus_high[bi];
next->addr_lo = rx_local->fbr[0]->bus_low[bi];
next->word2 = bi;
writel(bump_fbr(&rx_local->local_Fbr0_full,
rx_local->Fbr0NumEntries - 1),
&rx_dma->fbr0_full_offset);
}
#endif
spin_unlock_irqrestore(&etdev->FbrLock, flags);
} else {
dev_err(&etdev->pdev->dev,
"NICReturnRFD illegal Buffer Index returned\n");
}
/* The processing on this RFD is done, so put it back on the tail of
* our list
*/
spin_lock_irqsave(&etdev->rcv_lock, flags);
list_add_tail(&rfd->list_node, &rx_local->RecvList);
rx_local->nReadyRecv++;
spin_unlock_irqrestore(&etdev->rcv_lock, flags);
WARN_ON(rx_local->nReadyRecv > rx_local->NumRfd);
}
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