[PATCH 3/4] staging: et131x: Fix issues when USE_FBR0 is not defined

From: Mark Einon
Date: Thu Oct 13 2011 - 14:13:57 EST

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* Following on from making rx_ring.fbr use a common structure - reversed
the fbr[] array indicies so that index 1 = FBR0 and index 0 = FBR1,
which allows USE_FBR0 define to work.

* Also fixed up minor issues where indexes into the array were out of
bounds in some places.

* Removed rx_ring.fbr common stuct TODO item from README

Signed-off-by: Mark Einon <mark.einon@xxxxxxxxx>
---
drivers/staging/et131x/README | 1 -
drivers/staging/et131x/et131x.c | 304 ++++++++++++++++++++-------------------
2 files changed, 158 insertions(+), 147 deletions(-)

diff --git a/drivers/staging/et131x/README b/drivers/staging/et131x/README
index a7b33dc..1e0fcf4 100644
--- a/drivers/staging/et131x/README
+++ b/drivers/staging/et131x/README
@@ -8,7 +8,6 @@ Note, the powermanagement options were removed from the vendor provided
driver as they did not build properly at the time.

TODO:
- - rx_ring.fbr{0, 1} can probably share a common structure
- Use of kmem_cache seems a bit unusual
- Use dma_alloc_... in place of pci_alloc_...
- It's too late stopping the tx queue when there is no room for the current packet. The condition should be detected for the next packet.
diff --git a/drivers/staging/et131x/et131x.c b/drivers/staging/et131x/et131x.c
index 0bc3e04..0fbb77d 100644
--- a/drivers/staging/et131x/et131x.c
+++ b/drivers/staging/et131x/et131x.c
@@ -322,10 +322,14 @@ struct fbr_lookup {
/*
* struct rx_ring is the sructure representing the adaptor's local
* reference(s) to the rings
+ *
+ ******************************************************************************
+ * IMPORTANT NOTE :- fbr_lookup *fbr[NUM_FBRS] uses index 0 to refer to FBR1
+ * and index 1 to refer to FRB0
+ ******************************************************************************
*/
struct rx_ring {
struct fbr_lookup *fbr[NUM_FBRS];
-
void *ps_ring_virtaddr;
dma_addr_t ps_ring_physaddr;
u32 local_psr_full;
@@ -1907,9 +1911,9 @@ int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter)

/* Alloc memory for the lookup table */
#ifdef USE_FBR0
- rx_ring->fbr[0] = kmalloc(sizeof(struct fbr_lookup), GFP_KERNEL);
-#endif
rx_ring->fbr[1] = kmalloc(sizeof(struct fbr_lookup), GFP_KERNEL);
+#endif
+ rx_ring->fbr[0] = kmalloc(sizeof(struct fbr_lookup), GFP_KERNEL);

/* The first thing we will do is configure the sizes of the buffer
* rings. These will change based on jumbo packet support. Larger
@@ -1931,40 +1935,40 @@ int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter)

if (adapter->registry_jumbo_packet < 2048) {
#ifdef USE_FBR0
- rx_ring->fbr[0]->buffsize = 256;
- rx_ring->fbr[0]->num_entries = 512;
-#endif
- rx_ring->fbr[1]->buffsize = 2048;
+ rx_ring->fbr[1]->buffsize = 256;
rx_ring->fbr[1]->num_entries = 512;
+#endif
+ rx_ring->fbr[0]->buffsize = 2048;
+ rx_ring->fbr[0]->num_entries = 512;
} else if (adapter->registry_jumbo_packet < 4096) {
#ifdef USE_FBR0
- rx_ring->fbr[0]->buffsize = 512;
- rx_ring->fbr[0]->num_entries = 1024;
+ rx_ring->fbr[1]->buffsize = 512;
+ rx_ring->fbr[1]->num_entries = 1024;
#endif
- rx_ring->fbr[1]->buffsize = 4096;
- rx_ring->fbr[1]->num_entries = 512;
+ rx_ring->fbr[0]->buffsize = 4096;
+ rx_ring->fbr[0]->num_entries = 512;
} else {
#ifdef USE_FBR0
- rx_ring->fbr[0]->buffsize = 1024;
- rx_ring->fbr[0]->num_entries = 768;
+ rx_ring->fbr[1]->buffsize = 1024;
+ rx_ring->fbr[1]->num_entries = 768;
#endif
- rx_ring->fbr[1]->buffsize = 16384;
- rx_ring->fbr[1]->num_entries = 128;
+ rx_ring->fbr[0]->buffsize = 16384;
+ rx_ring->fbr[0]->num_entries = 128;
}

#ifdef USE_FBR0
- adapter->rx_ring.psr_num_entries = adapter->rx_ring.fbr[0]->num_entries +
- adapter->rx_ring.fbr[1]->num_entries;
+ adapter->rx_ring.psr_num_entries = adapter->rx_ring.fbr[1]->num_entries +
+ adapter->rx_ring.fbr[0]->num_entries;
#else
- adapter->rx_ring.psr_num_entries = adapter->rx_ring.fbr[1]->num_entries;
+ adapter->rx_ring.psr_num_entries = adapter->rx_ring.fbr[0]->num_entries;
#endif

/* Allocate an area of memory for Free Buffer Ring 1 */
- bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr[1]->num_entries) + 0xfff;
- rx_ring->fbr[1]->ring_virtaddr = pci_alloc_consistent(adapter->pdev,
+ bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr[0]->num_entries) + 0xfff;
+ rx_ring->fbr[0]->ring_virtaddr = pci_alloc_consistent(adapter->pdev,
bufsize,
- &rx_ring->fbr[1]->ring_physaddr);
- if (!rx_ring->fbr[1]->ring_virtaddr) {
+ &rx_ring->fbr[0]->ring_physaddr);
+ if (!rx_ring->fbr[0]->ring_virtaddr) {
dev_err(&adapter->pdev->dev,
"Cannot alloc memory for Free Buffer Ring 1\n");
return -ENOMEM;
@@ -1977,24 +1981,24 @@ int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter)
* are ever returned, make sure the high part is retrieved here
* before storing the adjusted address.
*/
- rx_ring->fbr[1]->real_physaddr = rx_ring->fbr[1]->ring_physaddr;
+ rx_ring->fbr[0]->real_physaddr = rx_ring->fbr[0]->ring_physaddr;

/* Align Free Buffer Ring 1 on a 4K boundary */
et131x_align_allocated_memory(adapter,
- &rx_ring->fbr[1]->real_physaddr,
- &rx_ring->fbr[1]->offset, 0x0FFF);
+ &rx_ring->fbr[0]->real_physaddr,
+ &rx_ring->fbr[0]->offset, 0x0FFF);

- rx_ring->fbr[1]->ring_virtaddr =
- (void *)((u8 *) rx_ring->fbr[1]->ring_virtaddr +
- rx_ring->fbr[1]->offset);
+ rx_ring->fbr[0]->ring_virtaddr =
+ (void *)((u8 *) rx_ring->fbr[0]->ring_virtaddr +
+ rx_ring->fbr[0]->offset);

#ifdef USE_FBR0
/* Allocate an area of memory for Free Buffer Ring 0 */
- bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr[0]->num_entries) + 0xfff;
- rx_ring->fbr[0]->ring_virtaddr = pci_alloc_consistent(adapter->pdev,
+ bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr[1]->num_entries) + 0xfff;
+ rx_ring->fbr[1]->ring_virtaddr = pci_alloc_consistent(adapter->pdev,
bufsize,
- &rx_ring->fbr[0]->ring_physaddr);
- if (!rx_ring->fbr[0]->ring_virtaddr) {
+ &rx_ring->fbr[1]->ring_physaddr);
+ if (!rx_ring->fbr[1]->ring_virtaddr) {
dev_err(&adapter->pdev->dev,
"Cannot alloc memory for Free Buffer Ring 0\n");
return -ENOMEM;
@@ -2007,18 +2011,18 @@ int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter)
* are ever returned, make sure the high part is retrieved here before
* storing the adjusted address.
*/
- rx_ring->fbr[0]->real_physaddr = rx_ring->fbr[0]->ring_physaddr;
+ rx_ring->fbr[1]->real_physaddr = rx_ring->fbr[1]->ring_physaddr;

/* Align Free Buffer Ring 0 on a 4K boundary */
et131x_align_allocated_memory(adapter,
- &rx_ring->fbr[0]->real_physaddr,
- &rx_ring->fbr[0]->offset, 0x0FFF);
+ &rx_ring->fbr[1]->real_physaddr,
+ &rx_ring->fbr[1]->offset, 0x0FFF);

- rx_ring->fbr[0]->ring_virtaddr =
- (void *)((u8 *) rx_ring->fbr[0]->ring_virtaddr +
- rx_ring->fbr[0]->offset);
+ rx_ring->fbr[1]->ring_virtaddr =
+ (void *)((u8 *) rx_ring->fbr[1]->ring_virtaddr +
+ rx_ring->fbr[1]->offset);
#endif
- for (i = 0; i < (rx_ring->fbr[1]->num_entries / FBR_CHUNKS); i++) {
+ for (i = 0; i < (rx_ring->fbr[0]->num_entries / FBR_CHUNKS); i++) {
u64 fbr1_offset;
u64 fbr1_tmp_physaddr;
u32 fbr1_align;
@@ -2030,25 +2034,25 @@ int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter)
* the size of FBR0. By allocating N buffers at once, we
* reduce this overhead.
*/
- if (rx_ring->fbr[1]->buffsize > 4096)
+ if (rx_ring->fbr[0]->buffsize > 4096)
fbr1_align = 4096;
else
- fbr1_align = rx_ring->fbr[1]->buffsize;
+ fbr1_align = rx_ring->fbr[0]->buffsize;

fbr_chunksize =
- (FBR_CHUNKS * rx_ring->fbr[1]->buffsize) + fbr1_align - 1;
- rx_ring->fbr[1]->mem_virtaddrs[i] =
+ (FBR_CHUNKS * rx_ring->fbr[0]->buffsize) + fbr1_align - 1;
+ rx_ring->fbr[0]->mem_virtaddrs[i] =
pci_alloc_consistent(adapter->pdev, fbr_chunksize,
- &rx_ring->fbr[1]->mem_physaddrs[i]);
+ &rx_ring->fbr[0]->mem_physaddrs[i]);

- if (!rx_ring->fbr[1]->mem_virtaddrs[i]) {
+ if (!rx_ring->fbr[0]->mem_virtaddrs[i]) {
dev_err(&adapter->pdev->dev,
"Could not alloc memory\n");
return -ENOMEM;
}

/* See NOTE in "Save Physical Address" comment above */
- fbr1_tmp_physaddr = rx_ring->fbr[1]->mem_physaddrs[i];
+ fbr1_tmp_physaddr = rx_ring->fbr[0]->mem_physaddrs[i];

et131x_align_allocated_memory(adapter,
&fbr1_tmp_physaddr,
@@ -2060,71 +2064,71 @@ int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter)
/* Save the Virtual address of this index for quick
* access later
*/
- rx_ring->fbr[1]->virt[index] =
- (u8 *) rx_ring->fbr[1]->mem_virtaddrs[i] +
- (j * rx_ring->fbr[1]->buffsize) + fbr1_offset;
+ rx_ring->fbr[0]->virt[index] =
+ (u8 *) rx_ring->fbr[0]->mem_virtaddrs[i] +
+ (j * rx_ring->fbr[0]->buffsize) + fbr1_offset;

/* now store the physical address in the descriptor
* so the device can access it
*/
- rx_ring->fbr[1]->bus_high[index] =
+ rx_ring->fbr[0]->bus_high[index] =
(u32) (fbr1_tmp_physaddr >> 32);
- rx_ring->fbr[1]->bus_low[index] =
+ rx_ring->fbr[0]->bus_low[index] =
(u32) fbr1_tmp_physaddr;

- fbr1_tmp_physaddr += rx_ring->fbr[1]->buffsize;
+ fbr1_tmp_physaddr += rx_ring->fbr[0]->buffsize;

- rx_ring->fbr[1]->buffer1[index] =
- rx_ring->fbr[1]->virt[index];
- rx_ring->fbr[1]->buffer2[index] =
- rx_ring->fbr[1]->virt[index] - 4;
+ rx_ring->fbr[0]->buffer1[index] =
+ rx_ring->fbr[0]->virt[index];
+ rx_ring->fbr[0]->buffer2[index] =
+ rx_ring->fbr[0]->virt[index] - 4;
}
}

#ifdef USE_FBR0
/* Same for FBR0 (if in use) */
- for (i = 0; i < (rx_ring->fbr[0]->num_entries / FBR_CHUNKS); i++) {
+ for (i = 0; i < (rx_ring->fbr[1]->num_entries / FBR_CHUNKS); i++) {
u64 fbr0_offset;
u64 fbr0_tmp_physaddr;

fbr_chunksize =
- ((FBR_CHUNKS + 1) * rx_ring->fbr[0]->buffsize) - 1;
- rx_ring->fbr[0]->mem_virtaddrs[i] =
+ ((FBR_CHUNKS + 1) * rx_ring->fbr[1]->buffsize) - 1;
+ rx_ring->fbr[1]->mem_virtaddrs[i] =
pci_alloc_consistent(adapter->pdev, fbr_chunksize,
- &rx_ring->fbr[0]->mem_physaddrs[i]);
+ &rx_ring->fbr[1]->mem_physaddrs[i]);

- if (!rx_ring->fbr[0]->mem_virtaddrs[i]) {
+ if (!rx_ring->fbr[1]->mem_virtaddrs[i]) {
dev_err(&adapter->pdev->dev,
"Could not alloc memory\n");
return -ENOMEM;
}

/* See NOTE in "Save Physical Address" comment above */
- fbr0_tmp_physaddr = rx_ring->fbr[0]->mem_physaddrs[i];
+ fbr0_tmp_physaddr = rx_ring->fbr[1]->mem_physaddrs[i];

et131x_align_allocated_memory(adapter,
&fbr0_tmp_physaddr,
&fbr0_offset,
- rx_ring->fbr[0]->buffsize - 1);
+ rx_ring->fbr[1]->buffsize - 1);

for (j = 0; j < FBR_CHUNKS; j++) {
u32 index = (i * FBR_CHUNKS) + j;

- rx_ring->fbr[0]->virt[index] =
- (u8 *) rx_ring->fbr[0]->mem_virtaddrs[i] +
- (j * rx_ring->fbr[0]->buffsize) + fbr0_offset;
+ rx_ring->fbr[1]->virt[index] =
+ (u8 *) rx_ring->fbr[1]->mem_virtaddrs[i] +
+ (j * rx_ring->fbr[1]->buffsize) + fbr0_offset;

- rx_ring->fbr[0]->bus_high[index] =
+ rx_ring->fbr[1]->bus_high[index] =
(u32) (fbr0_tmp_physaddr >> 32);
- rx_ring->fbr[0]->bus_low[index] =
+ rx_ring->fbr[1]->bus_low[index] =
(u32) fbr0_tmp_physaddr;

- fbr0_tmp_physaddr += rx_ring->fbr[0]->buffsize;
+ fbr0_tmp_physaddr += rx_ring->fbr[1]->buffsize;

- rx_ring->fbr[0]->buffer1[index] =
- rx_ring->fbr[0]->virt[index];
- rx_ring->fbr[0]->buffer2[index] =
- rx_ring->fbr[0]->virt[index] - 4;
+ rx_ring->fbr[1]->buffer1[index] =
+ rx_ring->fbr[1]->virt[index];
+ rx_ring->fbr[1]->buffer2[index] =
+ rx_ring->fbr[1]->virt[index] - 4;
}
}
#endif
@@ -2214,78 +2218,78 @@ void et131x_rx_dma_memory_free(struct et131x_adapter *adapter)
}

/* Free Free Buffer Ring 1 */
- if (rx_ring->fbr[1]->ring_virtaddr) {
+ if (rx_ring->fbr[0]->ring_virtaddr) {
/* First the packet memory */
for (index = 0; index <
- (rx_ring->fbr[1]->num_entries / FBR_CHUNKS); index++) {
- if (rx_ring->fbr[1]->mem_virtaddrs[index]) {
+ (rx_ring->fbr[0]->num_entries / FBR_CHUNKS); index++) {
+ if (rx_ring->fbr[0]->mem_virtaddrs[index]) {
u32 fbr1_align;

- if (rx_ring->fbr[1]->buffsize > 4096)
+ if (rx_ring->fbr[0]->buffsize > 4096)
fbr1_align = 4096;
else
- fbr1_align = rx_ring->fbr[1]->buffsize;
+ fbr1_align = rx_ring->fbr[0]->buffsize;

bufsize =
- (rx_ring->fbr[1]->buffsize * FBR_CHUNKS) +
+ (rx_ring->fbr[0]->buffsize * FBR_CHUNKS) +
fbr1_align - 1;

pci_free_consistent(adapter->pdev,
bufsize,
- rx_ring->fbr[1]->mem_virtaddrs[index],
- rx_ring->fbr[1]->mem_physaddrs[index]);
+ rx_ring->fbr[0]->mem_virtaddrs[index],
+ rx_ring->fbr[0]->mem_physaddrs[index]);

- rx_ring->fbr[1]->mem_virtaddrs[index] = NULL;
+ rx_ring->fbr[0]->mem_virtaddrs[index] = NULL;
}
}

/* Now the FIFO itself */
- rx_ring->fbr[1]->ring_virtaddr = (void *)((u8 *)
- rx_ring->fbr[1]->ring_virtaddr - rx_ring->fbr[1]->offset);
+ rx_ring->fbr[0]->ring_virtaddr = (void *)((u8 *)
+ rx_ring->fbr[0]->ring_virtaddr - rx_ring->fbr[0]->offset);

- bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr[1]->num_entries)
+ bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr[0]->num_entries)
+ 0xfff;

pci_free_consistent(adapter->pdev, bufsize,
- rx_ring->fbr[1]->ring_virtaddr,
- rx_ring->fbr[1]->ring_physaddr);
+ rx_ring->fbr[0]->ring_virtaddr,
+ rx_ring->fbr[0]->ring_physaddr);

- rx_ring->fbr[1]->ring_virtaddr = NULL;
+ rx_ring->fbr[0]->ring_virtaddr = NULL;
}

#ifdef USE_FBR0
/* Now the same for Free Buffer Ring 0 */
- if (rx_ring->fbr[0]->ring_virtaddr) {
+ if (rx_ring->fbr[1]->ring_virtaddr) {
/* First the packet memory */
for (index = 0; index <
- (rx_ring->fbr[0]->num_entries / FBR_CHUNKS); index++) {
- if (rx_ring->fbr[0]->mem_virtaddrs[index]) {
+ (rx_ring->fbr[1]->num_entries / FBR_CHUNKS); index++) {
+ if (rx_ring->fbr[1]->mem_virtaddrs[index]) {
bufsize =
- (rx_ring->fbr[0]->buffsize *
+ (rx_ring->fbr[1]->buffsize *
(FBR_CHUNKS + 1)) - 1;

pci_free_consistent(adapter->pdev,
bufsize,
- rx_ring->fbr[0]->mem_virtaddrs[index],
- rx_ring->fbr[0]->mem_physaddrs[index]);
+ rx_ring->fbr[1]->mem_virtaddrs[index],
+ rx_ring->fbr[1]->mem_physaddrs[index]);

- rx_ring->fbr[0]->mem_virtaddrs[index] = NULL;
+ rx_ring->fbr[1]->mem_virtaddrs[index] = NULL;
}
}

/* Now the FIFO itself */
- rx_ring->fbr[0]->ring_virtaddr = (void *)((u8 *)
- rx_ring->fbr[0]->ring_virtaddr - rx_ring->fbr[0]->offset);
+ rx_ring->fbr[1]->ring_virtaddr = (void *)((u8 *)
+ rx_ring->fbr[1]->ring_virtaddr - rx_ring->fbr[1]->offset);

- bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr[0]->num_entries)
+ bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr[1]->num_entries)
+ 0xfff;

pci_free_consistent(adapter->pdev,
bufsize,
- rx_ring->fbr[0]->ring_virtaddr,
- rx_ring->fbr[0]->ring_physaddr);
+ rx_ring->fbr[1]->ring_virtaddr,
+ rx_ring->fbr[1]->ring_physaddr);

- rx_ring->fbr[0]->ring_virtaddr = NULL;
+ rx_ring->fbr[1]->ring_virtaddr = NULL;
}
#endif

@@ -2322,10 +2326,10 @@ void et131x_rx_dma_memory_free(struct et131x_adapter *adapter)

/* Free the FBR Lookup Table */
#ifdef USE_FBR0
- kfree(rx_ring->fbr[0]);
+ kfree(rx_ring->fbr[1]);
#endif

- kfree(rx_ring->fbr[1]);
+ kfree(rx_ring->fbr[0]);

/* Reset Counters */
rx_ring->num_ready_recv = 0;
@@ -2431,10 +2435,10 @@ void et131x_config_rx_dma_regs(struct et131x_adapter *adapter)
rx_local->local_psr_full = 0;

/* Now's the best time to initialize FBR1 contents */
- fbr_entry = (struct fbr_desc *) rx_local->fbr[1]->ring_virtaddr;
- for (entry = 0; entry < rx_local->fbr[1]->num_entries; entry++) {
- fbr_entry->addr_hi = rx_local->fbr[1]->bus_high[entry];
- fbr_entry->addr_lo = rx_local->fbr[1]->bus_low[entry];
+ fbr_entry = (struct fbr_desc *) rx_local->fbr[0]->ring_virtaddr;
+ for (entry = 0; entry < rx_local->fbr[0]->num_entries; entry++) {
+ fbr_entry->addr_hi = rx_local->fbr[0]->bus_high[entry];
+ fbr_entry->addr_lo = rx_local->fbr[0]->bus_low[entry];
fbr_entry->word2 = entry;
fbr_entry++;
}
@@ -2442,42 +2446,42 @@ void et131x_config_rx_dma_regs(struct et131x_adapter *adapter)
/* Set the address and parameters of Free buffer ring 1 (and 0 if
* required) into the 1310's registers
*/
- writel((u32) (rx_local->fbr[1]->real_physaddr >> 32),
+ writel((u32) (rx_local->fbr[0]->real_physaddr >> 32),
&rx_dma->fbr1_base_hi);
- writel((u32) rx_local->fbr[1]->real_physaddr, &rx_dma->fbr1_base_lo);
- writel(rx_local->fbr[1]->num_entries - 1, &rx_dma->fbr1_num_des);
+ writel((u32) rx_local->fbr[0]->real_physaddr, &rx_dma->fbr1_base_lo);
+ writel(rx_local->fbr[0]->num_entries - 1, &rx_dma->fbr1_num_des);
writel(ET_DMA10_WRAP, &rx_dma->fbr1_full_offset);

/* This variable tracks the free buffer ring 1 full position, so it
* has to match the above.
*/
- rx_local->fbr[1]->local_full = ET_DMA10_WRAP;
+ rx_local->fbr[0]->local_full = ET_DMA10_WRAP;
writel(
- ((rx_local->fbr[1]->num_entries * LO_MARK_PERCENT_FOR_RX) / 100) - 1,
+ ((rx_local->fbr[0]->num_entries * LO_MARK_PERCENT_FOR_RX) / 100) - 1,
&rx_dma->fbr1_min_des);

#ifdef USE_FBR0
/* Now's the best time to initialize FBR0 contents */
- fbr_entry = (struct fbr_desc *) rx_local->fbr[0]->ring_virtaddr;
- for (entry = 0; entry < rx_local->fbr[0]->num_entries; entry++) {
- fbr_entry->addr_hi = rx_local->fbr[0]->bus_high[entry];
- fbr_entry->addr_lo = rx_local->fbr[0]->bus_low[entry];
+ fbr_entry = (struct fbr_desc *) rx_local->fbr[1]->ring_virtaddr;
+ for (entry = 0; entry < rx_local->fbr[1]->num_entries; entry++) {
+ fbr_entry->addr_hi = rx_local->fbr[1]->bus_high[entry];
+ fbr_entry->addr_lo = rx_local->fbr[1]->bus_low[entry];
fbr_entry->word2 = entry;
fbr_entry++;
}

- writel((u32) (rx_local->fbr[0]->real_physaddr >> 32),
+ writel((u32) (rx_local->fbr[1]->real_physaddr >> 32),
&rx_dma->fbr0_base_hi);
- writel((u32) rx_local->fbr[0]->real_physaddr, &rx_dma->fbr0_base_lo);
- writel(rx_local->fbr[0]->num_entries - 1, &rx_dma->fbr0_num_des);
+ writel((u32) rx_local->fbr[1]->real_physaddr, &rx_dma->fbr0_base_lo);
+ writel(rx_local->fbr[1]->num_entries - 1, &rx_dma->fbr0_num_des);
writel(ET_DMA10_WRAP, &rx_dma->fbr0_full_offset);

/* This variable tracks the free buffer ring 0 full position, so it
* has to match the above.
*/
- rx_local->fbr[0]->local_full = ET_DMA10_WRAP;
+ rx_local->fbr[1]->local_full = ET_DMA10_WRAP;
writel(
- ((rx_local->fbr[0]->num_entries * LO_MARK_PERCENT_FOR_RX) / 100) - 1,
+ ((rx_local->fbr[1]->num_entries * LO_MARK_PERCENT_FOR_RX) / 100) - 1,
&rx_dma->fbr0_min_des);
#endif

@@ -2536,45 +2540,45 @@ static void nic_return_rfd(struct et131x_adapter *adapter, struct rfd *rfd)
*/
if (
#ifdef USE_FBR0
- (ring_index == 0 && buff_index < rx_local->fbr[0]->num_entries) ||
+ (ring_index == 0 && buff_index < rx_local->fbr[1]->num_entries) ||
#endif
- (ring_index == 1 && buff_index < rx_local->fbr[1]->num_entries)) {
+ (ring_index == 1 && buff_index < rx_local->fbr[0]->num_entries)) {
spin_lock_irqsave(&adapter->fbr_lock, flags);

if (ring_index == 1) {
struct fbr_desc *next =
- (struct fbr_desc *) (rx_local->fbr[1]->ring_virtaddr) +
- INDEX10(rx_local->fbr[1]->local_full);
+ (struct fbr_desc *) (rx_local->fbr[0]->ring_virtaddr) +
+ INDEX10(rx_local->fbr[0]->local_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[buff_index];
- next->addr_lo = rx_local->fbr[1]->bus_low[buff_index];
+ next->addr_hi = rx_local->fbr[0]->bus_high[buff_index];
+ next->addr_lo = rx_local->fbr[0]->bus_low[buff_index];
next->word2 = buff_index;

- writel(bump_free_buff_ring(&rx_local->fbr[1]->local_full,
- rx_local->fbr[1]->num_entries - 1),
+ writel(bump_free_buff_ring(&rx_local->fbr[0]->local_full,
+ rx_local->fbr[0]->num_entries - 1),
&rx_dma->fbr1_full_offset);
}
#ifdef USE_FBR0
else {
struct fbr_desc *next = (struct fbr_desc *)
- rx_local->fbr[0]->ring_virtaddr +
- INDEX10(rx_local->fbr[0]->local_full);
+ rx_local->fbr[1]->ring_virtaddr +
+ INDEX10(rx_local->fbr[1]->local_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[buff_index];
- next->addr_lo = rx_local->fbr[0]->bus_low[buff_index];
+ next->addr_hi = rx_local->fbr[1]->bus_high[buff_index];
+ next->addr_lo = rx_local->fbr[1]->bus_low[buff_index];
next->word2 = buff_index;

writel(bump_free_buff_ring(
- &rx_local->fbr[0]->local_full,
- rx_local->fbr[0]->num_entries - 1),
+ &rx_local->fbr[1]->local_full,
+ rx_local->fbr[1]->num_entries - 1),
&rx_dma->fbr0_full_offset);
}
#endif
@@ -2624,19 +2628,19 @@ void et131x_rx_dma_enable(struct et131x_adapter *adapter)
/* Setup the receive dma configuration register for normal operation */
u32 csr = 0x2000; /* FBR1 enable */

- if (adapter->rx_ring.fbr[1]->buffsize == 4096)
+ if (adapter->rx_ring.fbr[0]->buffsize == 4096)
csr |= 0x0800;
- else if (adapter->rx_ring.fbr[1]->buffsize == 8192)
+ else if (adapter->rx_ring.fbr[0]->buffsize == 8192)
csr |= 0x1000;
- else if (adapter->rx_ring.fbr[1]->buffsize == 16384)
+ else if (adapter->rx_ring.fbr[0]->buffsize == 16384)
csr |= 0x1800;
#ifdef USE_FBR0
csr |= 0x0400; /* FBR0 enable */
- if (adapter->rx_ring.fbr[0]->buffsize == 256)
+ if (adapter->rx_ring.fbr[1]->buffsize == 256)
csr |= 0x0100;
- else if (adapter->rx_ring.fbr[0]->buffsize == 512)
+ else if (adapter->rx_ring.fbr[1]->buffsize == 512)
csr |= 0x0200;
- else if (adapter->rx_ring.fbr[0]->buffsize == 1024)
+ else if (adapter->rx_ring.fbr[1]->buffsize == 1024)
csr |= 0x0300;
#endif
writel(csr, &adapter->regs->rxdma.csr);
@@ -2737,11 +2741,11 @@ static struct rfd *nic_rx_pkts(struct et131x_adapter *adapter)
#ifdef USE_FBR0
if (ring_index > 1 ||
(ring_index == 0 &&
- buff_index > rx_local->fbr[0]->num_entries - 1) ||
+ buff_index > rx_local->fbr[1]->num_entries - 1) ||
(ring_index == 1 &&
- buff_index > rx_local->fbr[1]->num_entries - 1))
+ buff_index > rx_local->fbr[0]->num_entries - 1))
#else
- if (ring_index != 1 || buff_index > rx_local->fbr[1]->num_entries - 1)
+ if (ring_index != 1 || buff_index > rx_local->fbr[0]->num_entries - 1)
#endif
{
/* Illegal buffer or ring index cannot be used by S/W*/
@@ -2800,7 +2804,11 @@ static struct rfd *nic_rx_pkts(struct et131x_adapter *adapter)
ET131X_PACKET_TYPE_PROMISCUOUS)
&& !(adapter->packet_filter &
ET131X_PACKET_TYPE_ALL_MULTICAST)) {
- buf = rx_local->fbr[ring_index]->
+ /*
+ * Note - ring_index for fbr[] array is reversed
+ * 1 for FBR0 etc
+ */
+ buf = rx_local->fbr[(ring_index == 0 ? 1 : 0)]->
virt[buff_index];

/* Loop through our list to see if the
@@ -2865,8 +2873,12 @@ static struct rfd *nic_rx_pkts(struct et131x_adapter *adapter)

adapter->net_stats.rx_bytes += rfd->len;

+ /*
+ * Note - ring_index for fbr[] array is reversed,
+ * 1 for FBR0 etc
+ */
memcpy(skb_put(skb, rfd->len),
- rx_local->fbr[ring_index]->virt[buff_index],
+ rx_local->fbr[(ring_index == 0 ? 1 : 0)]->virt[buff_index],
rfd->len);

skb->dev = adapter->netdev;
--
1.7.6.4

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