From: Manfred Spraul <manfred@colorfullife.com>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: Netdev <netdev@oss.sgi.com>, Ayaz Abdulla <AAbdulla@nvidia.com>
Subject: Re: [PATCH] forcedeth: Add support for 64-bit dma addresses.
Date: Fri, 22 Jul 2005 23:09:33 +0200 [thread overview]
Message-ID: <42E1608D.80608@colorfullife.com> (raw)
In-Reply-To: <42E15D83.7000902@pobox.com>
[-- Attachment #1: Type: text/plain, Size: 628 bytes --]
Jeff Garzik wrote:
> Manfred Spraul wrote:
>
>> + if (id->driver_data & DEV_HAS_HIGH_DMA) {
>> + np->desc_ver = DESC_VER_3;
>> + dev->features |= NETIF_F_HIGHDMA;
>> + if (pci_set_dma_mask(pci_dev, 0x0000007fffffffffULL)) {
>> + if (pci_set_dma_mask(pci_dev, 0xffffffffULL))
>> + goto out_relreg;
>> + }
>
>
>
> setting of NETIF_F_HIGHDMA is wrong, if 64-bit set-dma-mask fails.
Ok, I have removed the NETIF_F_HIGHDMA setting: forcedeth doesn't
support scatter-gather, thus illegal_highdma() is never called,
therefore NETIF_F_HIGHDMA doesn't matter.
--
Manfred
[-- Attachment #2: patch-forcedeth-039-64bit --]
[-- Type: text/plain, Size: 15361 bytes --]
--- 2.6/drivers/net/forcedeth.c 2005-07-22 23:06:21.000000000 +0200
+++ build-2.6/drivers/net/forcedeth.c 2005-07-22 23:06:10.000000000 +0200
@@ -89,6 +89,7 @@
* 0.37: 10 Jul 2005: Additional ethtool support, cleanup of pci id list
* 0.38: 16 Jul 2005: tx irq rewrite: Use global flags instead of
* per-packet flags.
+ * 0.39: 18 Jul 2005: Add 64bit descriptor support.
*
* Known bugs:
* We suspect that on some hardware no TX done interrupts are generated.
@@ -100,7 +101,7 @@
* DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few
* superfluous timer interrupts from the nic.
*/
-#define FORCEDETH_VERSION "0.38"
+#define FORCEDETH_VERSION "0.39"
#define DRV_NAME "forcedeth"
#include <linux/module.h>
@@ -138,6 +139,7 @@
#define DEV_NEED_TIMERIRQ 0x0001 /* set the timer irq flag in the irq mask */
#define DEV_NEED_LINKTIMER 0x0002 /* poll link settings. Relies on the timer irq */
#define DEV_HAS_LARGEDESC 0x0004 /* device supports jumbo frames and needs packet format 2 */
+#define DEV_HAS_HIGH_DMA 0x0008 /* device supports 64bit dma */
enum {
NvRegIrqStatus = 0x000,
@@ -291,6 +293,18 @@
u32 FlagLen;
};
+struct ring_desc_ex {
+ u32 PacketBufferHigh;
+ u32 PacketBufferLow;
+ u32 Reserved;
+ u32 FlagLen;
+};
+
+typedef union _ring_type {
+ struct ring_desc* orig;
+ struct ring_desc_ex* ex;
+} ring_type;
+
#define FLAG_MASK_V1 0xffff0000
#define FLAG_MASK_V2 0xffffc000
#define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
@@ -405,6 +419,7 @@
*/
#define DESC_VER_1 0x0
#define DESC_VER_2 (0x02100|NVREG_TXRXCTL_RXCHECK)
+#define DESC_VER_3 (0x02200|NVREG_TXRXCTL_RXCHECK)
/* PHY defines */
#define PHY_OUI_MARVELL 0x5043
@@ -477,7 +492,7 @@
/* rx specific fields.
* Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
*/
- struct ring_desc *rx_ring;
+ ring_type rx_ring;
unsigned int cur_rx, refill_rx;
struct sk_buff *rx_skbuff[RX_RING];
dma_addr_t rx_dma[RX_RING];
@@ -494,7 +509,7 @@
/*
* tx specific fields.
*/
- struct ring_desc *tx_ring;
+ ring_type tx_ring;
unsigned int next_tx, nic_tx;
struct sk_buff *tx_skbuff[TX_RING];
dma_addr_t tx_dma[TX_RING];
@@ -529,6 +544,11 @@
& ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
}
+static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
+{
+ return le32_to_cpu(prd->FlagLen) & LEN_MASK_V2;
+}
+
static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
int delay, int delaymax, const char *msg)
{
@@ -813,9 +833,16 @@
}
np->rx_dma[nr] = pci_map_single(np->pci_dev, skb->data, skb->len,
PCI_DMA_FROMDEVICE);
- np->rx_ring[nr].PacketBuffer = cpu_to_le32(np->rx_dma[nr]);
- wmb();
- np->rx_ring[nr].FlagLen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
+ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
+ np->rx_ring.orig[nr].PacketBuffer = cpu_to_le32(np->rx_dma[nr]);
+ wmb();
+ np->rx_ring.orig[nr].FlagLen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
+ } else {
+ np->rx_ring.ex[nr].PacketBufferHigh = cpu_to_le64(np->rx_dma[nr]) >> 32;
+ np->rx_ring.ex[nr].PacketBufferLow = cpu_to_le64(np->rx_dma[nr]) & 0x0FFFFFFFF;
+ wmb();
+ np->rx_ring.ex[nr].FlagLen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
+ }
dprintk(KERN_DEBUG "%s: nv_alloc_rx: Packet %d marked as Available\n",
dev->name, refill_rx);
refill_rx++;
@@ -849,7 +876,10 @@
np->cur_rx = RX_RING;
np->refill_rx = 0;
for (i = 0; i < RX_RING; i++)
- np->rx_ring[i].FlagLen = 0;
+ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+ np->rx_ring.orig[i].FlagLen = 0;
+ else
+ np->rx_ring.ex[i].FlagLen = 0;
}
static void nv_init_tx(struct net_device *dev)
@@ -859,7 +889,10 @@
np->next_tx = np->nic_tx = 0;
for (i = 0; i < TX_RING; i++)
- np->tx_ring[i].FlagLen = 0;
+ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+ np->tx_ring.orig[i].FlagLen = 0;
+ else
+ np->tx_ring.ex[i].FlagLen = 0;
}
static int nv_init_ring(struct net_device *dev)
@@ -874,7 +907,10 @@
struct fe_priv *np = get_nvpriv(dev);
int i;
for (i = 0; i < TX_RING; i++) {
- np->tx_ring[i].FlagLen = 0;
+ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+ np->tx_ring.orig[i].FlagLen = 0;
+ else
+ np->tx_ring.ex[i].FlagLen = 0;
if (np->tx_skbuff[i]) {
pci_unmap_single(np->pci_dev, np->tx_dma[i],
np->tx_skbuff[i]->len,
@@ -891,7 +927,10 @@
struct fe_priv *np = get_nvpriv(dev);
int i;
for (i = 0; i < RX_RING; i++) {
- np->rx_ring[i].FlagLen = 0;
+ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+ np->rx_ring.orig[i].FlagLen = 0;
+ else
+ np->rx_ring.ex[i].FlagLen = 0;
wmb();
if (np->rx_skbuff[i]) {
pci_unmap_single(np->pci_dev, np->rx_dma[i],
@@ -922,11 +961,19 @@
np->tx_dma[nr] = pci_map_single(np->pci_dev, skb->data,skb->len,
PCI_DMA_TODEVICE);
- np->tx_ring[nr].PacketBuffer = cpu_to_le32(np->tx_dma[nr]);
+ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+ np->tx_ring.orig[nr].PacketBuffer = cpu_to_le32(np->tx_dma[nr]);
+ else {
+ np->tx_ring.ex[nr].PacketBufferHigh = cpu_to_le64(np->tx_dma[nr]) >> 32;
+ np->tx_ring.ex[nr].PacketBufferLow = cpu_to_le64(np->tx_dma[nr]) & 0x0FFFFFFFF;
+ }
spin_lock_irq(&np->lock);
wmb();
- np->tx_ring[nr].FlagLen = cpu_to_le32( (skb->len-1) | np->tx_flags );
+ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+ np->tx_ring.orig[nr].FlagLen = cpu_to_le32( (skb->len-1) | np->tx_flags );
+ else
+ np->tx_ring.ex[nr].FlagLen = cpu_to_le32( (skb->len-1) | np->tx_flags );
dprintk(KERN_DEBUG "%s: nv_start_xmit: packet packet %d queued for transmission.\n",
dev->name, np->next_tx);
{
@@ -964,7 +1011,10 @@
while (np->nic_tx != np->next_tx) {
i = np->nic_tx % TX_RING;
- Flags = le32_to_cpu(np->tx_ring[i].FlagLen);
+ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+ Flags = le32_to_cpu(np->tx_ring.orig[i].FlagLen);
+ else
+ Flags = le32_to_cpu(np->tx_ring.ex[i].FlagLen);
dprintk(KERN_DEBUG "%s: nv_tx_done: looking at packet %d, Flags 0x%x.\n",
dev->name, np->nic_tx, Flags);
@@ -1035,16 +1085,33 @@
}
printk(KERN_INFO "%s: Dumping tx ring\n", dev->name);
for (i=0;i<TX_RING;i+= 4) {
- printk(KERN_INFO "%03x: %08x %08x // %08x %08x // %08x %08x // %08x %08x\n",
- i,
- le32_to_cpu(np->tx_ring[i].PacketBuffer),
- le32_to_cpu(np->tx_ring[i].FlagLen),
- le32_to_cpu(np->tx_ring[i+1].PacketBuffer),
- le32_to_cpu(np->tx_ring[i+1].FlagLen),
- le32_to_cpu(np->tx_ring[i+2].PacketBuffer),
- le32_to_cpu(np->tx_ring[i+2].FlagLen),
- le32_to_cpu(np->tx_ring[i+3].PacketBuffer),
- le32_to_cpu(np->tx_ring[i+3].FlagLen));
+ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
+ printk(KERN_INFO "%03x: %08x %08x // %08x %08x // %08x %08x // %08x %08x\n",
+ i,
+ le32_to_cpu(np->tx_ring.orig[i].PacketBuffer),
+ le32_to_cpu(np->tx_ring.orig[i].FlagLen),
+ le32_to_cpu(np->tx_ring.orig[i+1].PacketBuffer),
+ le32_to_cpu(np->tx_ring.orig[i+1].FlagLen),
+ le32_to_cpu(np->tx_ring.orig[i+2].PacketBuffer),
+ le32_to_cpu(np->tx_ring.orig[i+2].FlagLen),
+ le32_to_cpu(np->tx_ring.orig[i+3].PacketBuffer),
+ le32_to_cpu(np->tx_ring.orig[i+3].FlagLen));
+ } else {
+ printk(KERN_INFO "%03x: %08x %08x %08x // %08x %08x %08x // %08x %08x %08x // %08x %08x %08x\n",
+ i,
+ le32_to_cpu(np->tx_ring.ex[i].PacketBufferHigh),
+ le32_to_cpu(np->tx_ring.ex[i].PacketBufferLow),
+ le32_to_cpu(np->tx_ring.ex[i].FlagLen),
+ le32_to_cpu(np->tx_ring.ex[i+1].PacketBufferHigh),
+ le32_to_cpu(np->tx_ring.ex[i+1].PacketBufferLow),
+ le32_to_cpu(np->tx_ring.ex[i+1].FlagLen),
+ le32_to_cpu(np->tx_ring.ex[i+2].PacketBufferHigh),
+ le32_to_cpu(np->tx_ring.ex[i+2].PacketBufferLow),
+ le32_to_cpu(np->tx_ring.ex[i+2].FlagLen),
+ le32_to_cpu(np->tx_ring.ex[i+3].PacketBufferHigh),
+ le32_to_cpu(np->tx_ring.ex[i+3].PacketBufferLow),
+ le32_to_cpu(np->tx_ring.ex[i+3].FlagLen));
+ }
}
}
@@ -1061,7 +1128,10 @@
printk(KERN_DEBUG "%s: tx_timeout: dead entries!\n", dev->name);
nv_drain_tx(dev);
np->next_tx = np->nic_tx = 0;
- writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+ writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+ else
+ writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
netif_wake_queue(dev);
}
@@ -1136,8 +1206,13 @@
break; /* we scanned the whole ring - do not continue */
i = np->cur_rx % RX_RING;
- Flags = le32_to_cpu(np->rx_ring[i].FlagLen);
- len = nv_descr_getlength(&np->rx_ring[i], np->desc_ver);
+ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
+ Flags = le32_to_cpu(np->rx_ring.orig[i].FlagLen);
+ len = nv_descr_getlength(&np->rx_ring.orig[i], np->desc_ver);
+ } else {
+ Flags = le32_to_cpu(np->rx_ring.ex[i].FlagLen);
+ len = nv_descr_getlength_ex(&np->rx_ring.ex[i], np->desc_ver);
+ }
dprintk(KERN_DEBUG "%s: nv_rx_process: looking at packet %d, Flags 0x%x.\n",
dev->name, np->cur_rx, Flags);
@@ -1321,7 +1396,10 @@
/* reinit nic view of the rx queue */
writel(np->rx_buf_sz, base + NvRegOffloadConfig);
writel((u32) np->ring_addr, base + NvRegRxRingPhysAddr);
- writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+ writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+ else
+ writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
writel( ((RX_RING-1) << NVREG_RINGSZ_RXSHIFT) + ((TX_RING-1) << NVREG_RINGSZ_TXSHIFT),
base + NvRegRingSizes);
pci_push(base);
@@ -1982,7 +2060,10 @@
/* 4) give hw rings */
writel((u32) np->ring_addr, base + NvRegRxRingPhysAddr);
- writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+ writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+ else
+ writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
writel( ((RX_RING-1) << NVREG_RINGSZ_RXSHIFT) + ((TX_RING-1) << NVREG_RINGSZ_TXSHIFT),
base + NvRegRingSizes);
@@ -2179,18 +2260,37 @@
np->desc_ver = DESC_VER_2;
np->pkt_limit = NV_PKTLIMIT_2;
}
+ if (id->driver_data & DEV_HAS_HIGH_DMA) {
+ np->desc_ver = DESC_VER_3;
+ if (pci_set_dma_mask(pci_dev, 0x0000007fffffffffULL)) {
+ if (pci_set_dma_mask(pci_dev, 0xffffffffULL))
+ goto out_relreg;
+ }
+ }
err = -ENOMEM;
np->base = ioremap(addr, NV_PCI_REGSZ);
if (!np->base)
goto out_relreg;
dev->base_addr = (unsigned long)np->base;
+
dev->irq = pci_dev->irq;
- np->rx_ring = pci_alloc_consistent(pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING),
- &np->ring_addr);
- if (!np->rx_ring)
- goto out_unmap;
- np->tx_ring = &np->rx_ring[RX_RING];
+
+ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
+ np->rx_ring.orig = pci_alloc_consistent(pci_dev,
+ sizeof(struct ring_desc) * (RX_RING + TX_RING),
+ &np->ring_addr);
+ if (!np->rx_ring.orig)
+ goto out_unmap;
+ np->tx_ring.orig = &np->rx_ring.orig[RX_RING];
+ } else {
+ np->rx_ring.ex = pci_alloc_consistent(pci_dev,
+ sizeof(struct ring_desc_ex) * (RX_RING + TX_RING),
+ &np->ring_addr);
+ if (!np->rx_ring.ex)
+ goto out_unmap;
+ np->tx_ring.ex = &np->rx_ring.ex[RX_RING];
+ }
dev->open = nv_open;
dev->stop = nv_close;
@@ -2313,8 +2413,12 @@
return 0;
out_freering:
- pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING),
- np->rx_ring, np->ring_addr);
+ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+ pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING),
+ np->rx_ring.orig, np->ring_addr);
+ else
+ pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (RX_RING + TX_RING),
+ np->rx_ring.ex, np->ring_addr);
pci_set_drvdata(pci_dev, NULL);
out_unmap:
iounmap(get_hwbase(dev));
@@ -2343,7 +2447,10 @@
writel(np->orig_mac[1], base + NvRegMacAddrB);
/* free all structures */
- pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING), np->rx_ring, np->ring_addr);
+ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+ pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING), np->rx_ring.orig, np->ring_addr);
+ else
+ pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (RX_RING + TX_RING), np->rx_ring.ex, np->ring_addr);
iounmap(get_hwbase(dev));
pci_release_regions(pci_dev);
pci_disable_device(pci_dev);
@@ -2382,35 +2489,35 @@
},
{ /* CK804 Ethernet Controller */
PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_8),
- .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC,
+ .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA,
},
{ /* CK804 Ethernet Controller */
PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_9),
- .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC,
+ .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA,
},
{ /* MCP04 Ethernet Controller */
PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_10),
- .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC,
+ .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA,
},
{ /* MCP04 Ethernet Controller */
PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_11),
- .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC,
+ .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA,
},
{ /* MCP51 Ethernet Controller */
PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_12),
- .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
+ .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA,
},
{ /* MCP51 Ethernet Controller */
PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_13),
- .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
+ .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA,
},
{ /* MCP55 Ethernet Controller */
PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_14),
- .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC,
+ .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA,
},
{ /* MCP55 Ethernet Controller */
PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_15),
- .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC,
+ .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA,
},
{0,},
};
prev parent reply other threads:[~2005-07-22 21:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-22 20:45 [PATCH] forcedeth: Add support for 64-bit dma addresses Manfred Spraul
2005-07-22 20:56 ` Jeff Garzik
2005-07-22 21:09 ` Manfred Spraul [this message]
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