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authorMark Einon <mark.einon@gmail.com>2011-10-20 01:18:30 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2011-10-23 10:03:40 +0200
commitd2796743cba2d30f018e10288effce53fbd53fbe (patch)
treee2a9ddf8346fc3af57a9f81d0bf722075bac576b /drivers/staging/et131x/et1310_rx.c
parentcd8eca6f77108617a8c47a800533f1b78a357a79 (diff)
staging: et131x: Put all .c files into one big file
Created one big .c file for the driver, moving the contents of all driver .c files into it. Signed-off-by: Mark Einon <mark.einon@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/et131x/et1310_rx.c')
-rw-r--r--drivers/staging/et131x/et1310_rx.c1160
1 files changed, 0 insertions, 1160 deletions
diff --git a/drivers/staging/et131x/et1310_rx.c b/drivers/staging/et131x/et1310_rx.c
deleted file mode 100644
index 814922bbff0..00000000000
--- a/drivers/staging/et131x/et1310_rx.c
+++ /dev/null
@@ -1,1160 +0,0 @@
-/*
- * Agere Systems Inc.
- * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- * http://www.agere.com
- *
- * Copyright (c) 2011 Mark Einon <mark.einon@gmail.com>
- *
- *------------------------------------------------------------------------------
- *
- * et1310_rx.c - Routines used to perform data reception
- *
- *------------------------------------------------------------------------------
- *
- * SOFTWARE LICENSE
- *
- * This software is provided subject to the following terms and conditions,
- * which you should read carefully before using the software. Using this
- * software indicates your acceptance of these terms and conditions. If you do
- * not agree with these terms and conditions, do not use the software.
- *
- * Copyright © 2005 Agere Systems Inc.
- * All rights reserved.
- *
- * Redistribution and use in source or binary forms, with or without
- * modifications, are permitted provided that the following conditions are met:
- *
- * . Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following Disclaimer as comments in the code as
- * well as in the documentation and/or other materials provided with the
- * distribution.
- *
- * . Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following Disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * . Neither the name of Agere Systems Inc. nor the names of the contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * Disclaimer
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY
- * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
- * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- */
-
-#include "et131x_defs.h"
-
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/in.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/bitops.h>
-#include <asm/system.h>
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/if_arp.h>
-#include <linux/ioport.h>
-#include <linux/phy.h>
-
-#include "et1310_phy.h"
-#include "et131x_adapter.h"
-#include "et1310_rx.h"
-#include "et131x.h"
-
-static inline u32 bump_free_buff_ring(u32 *free_buff_ring, u32 limit)
-{
- u32 tmp_free_buff_ring = *free_buff_ring;
- tmp_free_buff_ring++;
- /* 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 ((tmp_free_buff_ring & ET_DMA10_MASK) > limit) {
- tmp_free_buff_ring &= ~ET_DMA10_MASK;
- tmp_free_buff_ring ^= ET_DMA10_WRAP;
- }
- /* For the 1023 case */
- tmp_free_buff_ring &= (ET_DMA10_MASK|ET_DMA10_WRAP);
- *free_buff_ring = tmp_free_buff_ring;
- return tmp_free_buff_ring;
-}
-
-/**
- * et131x_rx_dma_memory_alloc
- * @adapter: pointer to our private adapter structure
- *
- * Returns 0 on success and errno on failure (as defined in errno.h)
- *
- * Allocates Free buffer ring 1 for sure, free buffer ring 0 if required,
- * and the Packet Status Ring.
- */
-int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter)
-{
- u32 i, j;
- u32 bufsize;
- u32 pktstat_ringsize, fbr_chunksize;
- struct rx_ring *rx_ring;
-
- /* Setup some convenience pointers */
- rx_ring = &adapter->rx_ring;
-
- /* 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);
-
- /* The first thing we will do is configure the sizes of the buffer
- * rings. These will change based on jumbo packet support. Larger
- * jumbo packets increases the size of each entry in FBR0, and the
- * number of entries in FBR0, while at the same time decreasing the
- * number of entries in FBR1.
- *
- * FBR1 holds "large" frames, FBR0 holds "small" frames. If FBR1
- * entries are huge in order to accommodate a "jumbo" frame, then it
- * will have less entries. Conversely, FBR1 will now be relied upon
- * to carry more "normal" frames, thus it's entry size also increases
- * and the number of entries goes up too (since it now carries
- * "small" + "regular" packets.
- *
- * In this scheme, we try to maintain 512 entries between the two
- * rings. Also, FBR1 remains a constant size - when it's size doubles
- * the number of entries halves. FBR0 increases in size, however.
- */
-
- if (adapter->registry_jumbo_packet < 2048) {
-#ifdef USE_FBR0
- rx_ring->fbr0_buffsize = 256;
- rx_ring->fbr0_num_entries = 512;
-#endif
- rx_ring->fbr1_buffsize = 2048;
- rx_ring->fbr1_num_entries = 512;
- } else if (adapter->registry_jumbo_packet < 4096) {
-#ifdef USE_FBR0
- rx_ring->fbr0_buffsize = 512;
- rx_ring->fbr0_num_entries = 1024;
-#endif
- rx_ring->fbr1_buffsize = 4096;
- rx_ring->fbr1_num_entries = 512;
- } else {
-#ifdef USE_FBR0
- rx_ring->fbr0_buffsize = 1024;
- rx_ring->fbr0_num_entries = 768;
-#endif
- rx_ring->fbr1_buffsize = 16384;
- rx_ring->fbr1_num_entries = 128;
- }
-
-#ifdef USE_FBR0
- adapter->rx_ring.psr_num_entries = adapter->rx_ring.fbr0_num_entries +
- adapter->rx_ring.fbr1_num_entries;
-#else
- adapter->rx_ring.psr_num_entries = adapter->rx_ring.fbr1_num_entries;
-#endif
-
- /* Allocate an area of memory for Free Buffer Ring 1 */
- bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr1_num_entries) + 0xfff;
- rx_ring->fbr1_ring_virtaddr = pci_alloc_consistent(adapter->pdev,
- bufsize,
- &rx_ring->fbr1_ring_physaddr);
- if (!rx_ring->fbr1_ring_virtaddr) {
- dev_err(&adapter->pdev->dev,
- "Cannot alloc memory for Free Buffer Ring 1\n");
- return -ENOMEM;
- }
-
- /* Save physical address
- *
- * NOTE: pci_alloc_consistent(), used above to alloc DMA regions,
- * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses
- * are ever returned, make sure the high part is retrieved here
- * before storing the adjusted address.
- */
- rx_ring->fbr1_real_physaddr = rx_ring->fbr1_ring_physaddr;
-
- /* Align Free Buffer Ring 1 on a 4K boundary */
- et131x_align_allocated_memory(adapter,
- &rx_ring->fbr1_real_physaddr,
- &rx_ring->fbr1_offset, 0x0FFF);
-
- rx_ring->fbr1_ring_virtaddr =
- (void *)((u8 *) rx_ring->fbr1_ring_virtaddr +
- rx_ring->fbr1_offset);
-
-#ifdef USE_FBR0
- /* Allocate an area of memory for Free Buffer Ring 0 */
- bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr0_num_entries) + 0xfff;
- rx_ring->fbr0_ring_virtaddr = pci_alloc_consistent(adapter->pdev,
- bufsize,
- &rx_ring->fbr0_ring_physaddr);
- if (!rx_ring->fbr0_ring_virtaddr) {
- dev_err(&adapter->pdev->dev,
- "Cannot alloc memory for Free Buffer Ring 0\n");
- return -ENOMEM;
- }
-
- /* Save physical address
- *
- * NOTE: pci_alloc_consistent(), used above to alloc DMA regions,
- * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses
- * are ever returned, make sure the high part is retrieved here before
- * storing the adjusted address.
- */
- rx_ring->fbr0_real_physaddr = rx_ring->fbr0_ring_physaddr;
-
- /* Align Free Buffer Ring 0 on a 4K boundary */
- et131x_align_allocated_memory(adapter,
- &rx_ring->fbr0_real_physaddr,
- &rx_ring->fbr0_offset, 0x0FFF);
-
- rx_ring->fbr0_ring_virtaddr =
- (void *)((u8 *) rx_ring->fbr0_ring_virtaddr +
- rx_ring->fbr0_offset);
-#endif
- for (i = 0; i < (rx_ring->fbr1_num_entries / FBR_CHUNKS); i++) {
- u64 fbr1_offset;
- u64 fbr1_tmp_physaddr;
- u32 fbr1_align;
-
- /* This code allocates an area of memory big enough for N
- * free buffers + (buffer_size - 1) so that the buffers can
- * be aligned on 4k boundaries. If each buffer were aligned
- * to a buffer_size boundary, the effect would be to double
- * the size of FBR0. By allocating N buffers at once, we
- * reduce this overhead.
- */
- if (rx_ring->fbr1_buffsize > 4096)
- fbr1_align = 4096;
- else
- fbr1_align = rx_ring->fbr1_buffsize;
-
- fbr_chunksize =
- (FBR_CHUNKS * rx_ring->fbr1_buffsize) + fbr1_align - 1;
- rx_ring->fbr1_mem_virtaddrs[i] =
- pci_alloc_consistent(adapter->pdev, fbr_chunksize,
- &rx_ring->fbr1_mem_physaddrs[i]);
-
- if (!rx_ring->fbr1_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->fbr1_mem_physaddrs[i];
-
- et131x_align_allocated_memory(adapter,
- &fbr1_tmp_physaddr,
- &fbr1_offset, (fbr1_align - 1));
-
- for (j = 0; j < FBR_CHUNKS; j++) {
- u32 index = (i * FBR_CHUNKS) + j;
-
- /* Save the Virtual address of this index for quick
- * access later
- */
- rx_ring->fbr[1]->virt[index] =
- (u8 *) rx_ring->fbr1_mem_virtaddrs[i] +
- (j * rx_ring->fbr1_buffsize) + fbr1_offset;
-
- /* now store the physical address in the descriptor
- * so the device can access it
- */
- rx_ring->fbr[1]->bus_high[index] =
- (u32) (fbr1_tmp_physaddr >> 32);
- rx_ring->fbr[1]->bus_low[index] =
- (u32) fbr1_tmp_physaddr;
-
- fbr1_tmp_physaddr += rx_ring->fbr1_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;
- }
- }
-
-#ifdef USE_FBR0
- /* Same for FBR0 (if in use) */
- for (i = 0; i < (rx_ring->fbr0_num_entries / FBR_CHUNKS); i++) {
- u64 fbr0_offset;
- u64 fbr0_tmp_physaddr;
-
- fbr_chunksize =
- ((FBR_CHUNKS + 1) * rx_ring->fbr0_buffsize) - 1;
- rx_ring->fbr0_mem_virtaddrs[i] =
- pci_alloc_consistent(adapter->pdev, fbr_chunksize,
- &rx_ring->fbr0_mem_physaddrs[i]);
-
- if (!rx_ring->fbr0_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->fbr0_mem_physaddrs[i];
-
- et131x_align_allocated_memory(adapter,
- &fbr0_tmp_physaddr,
- &fbr0_offset,
- rx_ring->fbr0_buffsize - 1);
-
- for (j = 0; j < FBR_CHUNKS; j++) {
- u32 index = (i * FBR_CHUNKS) + j;
-
- rx_ring->fbr[0]->virt[index] =
- (u8 *) rx_ring->fbr0_mem_virtaddrs[i] +
- (j * rx_ring->fbr0_buffsize) + fbr0_offset;
-
- rx_ring->fbr[0]->bus_high[index] =
- (u32) (fbr0_tmp_physaddr >> 32);
- rx_ring->fbr[0]->bus_low[index] =
- (u32) fbr0_tmp_physaddr;
-
- fbr0_tmp_physaddr += rx_ring->fbr0_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;
- }
- }
-#endif
-
- /* Allocate an area of memory for FIFO of Packet Status ring entries */
- pktstat_ringsize =
- sizeof(struct pkt_stat_desc) * adapter->rx_ring.psr_num_entries;
-
- rx_ring->ps_ring_virtaddr = pci_alloc_consistent(adapter->pdev,
- pktstat_ringsize,
- &rx_ring->ps_ring_physaddr);
-
- if (!rx_ring->ps_ring_virtaddr) {
- dev_err(&adapter->pdev->dev,
- "Cannot alloc memory for Packet Status Ring\n");
- return -ENOMEM;
- }
- printk(KERN_INFO "Packet Status Ring %lx\n",
- (unsigned long) rx_ring->ps_ring_physaddr);
-
- /*
- * NOTE : pci_alloc_consistent(), used above to alloc DMA regions,
- * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses
- * are ever returned, make sure the high part is retrieved here before
- * storing the adjusted address.
- */
-
- /* Allocate an area of memory for writeback of status information */
- rx_ring->rx_status_block = pci_alloc_consistent(adapter->pdev,
- sizeof(struct rx_status_block),
- &rx_ring->rx_status_bus);
- if (!rx_ring->rx_status_block) {
- dev_err(&adapter->pdev->dev,
- "Cannot alloc memory for Status Block\n");
- return -ENOMEM;
- }
- rx_ring->num_rfd = NIC_DEFAULT_NUM_RFD;
- printk(KERN_INFO "PRS %lx\n", (unsigned long)rx_ring->rx_status_bus);
-
- /* Recv
- * pci_pool_create initializes a lookaside list. After successful
- * creation, nonpaged fixed-size blocks can be allocated from and
- * freed to the lookaside list.
- * RFDs will be allocated from this pool.
- */
- rx_ring->recv_lookaside = kmem_cache_create(adapter->netdev->name,
- sizeof(struct rfd),
- 0,
- SLAB_CACHE_DMA |
- SLAB_HWCACHE_ALIGN,
- NULL);
-
- adapter->flags |= fMP_ADAPTER_RECV_LOOKASIDE;
-
- /* The RFDs are going to be put on lists later on, so initialize the
- * lists now.
- */
- INIT_LIST_HEAD(&rx_ring->recv_list);
- return 0;
-}
-
-/**
- * et131x_rx_dma_memory_free - Free all memory allocated within this module.
- * @adapter: pointer to our private adapter structure
- */
-void et131x_rx_dma_memory_free(struct et131x_adapter *adapter)
-{
- u32 index;
- u32 bufsize;
- u32 pktstat_ringsize;
- struct rfd *rfd;
- struct rx_ring *rx_ring;
-
- /* Setup some convenience pointers */
- rx_ring = &adapter->rx_ring;
-
- /* Free RFDs and associated packet descriptors */
- WARN_ON(rx_ring->num_ready_recv != rx_ring->num_rfd);
-
- while (!list_empty(&rx_ring->recv_list)) {
- rfd = (struct rfd *) list_entry(rx_ring->recv_list.next,
- struct rfd, list_node);
-
- list_del(&rfd->list_node);
- rfd->skb = NULL;
- kmem_cache_free(adapter->rx_ring.recv_lookaside, rfd);
- }
-
- /* Free Free Buffer Ring 1 */
- if (rx_ring->fbr1_ring_virtaddr) {
- /* First the packet memory */
- for (index = 0; index <
- (rx_ring->fbr1_num_entries / FBR_CHUNKS); index++) {
- if (rx_ring->fbr1_mem_virtaddrs[index]) {
- u32 fbr1_align;
-
- if (rx_ring->fbr1_buffsize > 4096)
- fbr1_align = 4096;
- else
- fbr1_align = rx_ring->fbr1_buffsize;
-
- bufsize =
- (rx_ring->fbr1_buffsize * FBR_CHUNKS) +
- fbr1_align - 1;
-
- pci_free_consistent(adapter->pdev,
- bufsize,
- rx_ring->fbr1_mem_virtaddrs[index],
- rx_ring->fbr1_mem_physaddrs[index]);
-
- rx_ring->fbr1_mem_virtaddrs[index] = NULL;
- }
- }
-
- /* Now the FIFO itself */
- rx_ring->fbr1_ring_virtaddr = (void *)((u8 *)
- rx_ring->fbr1_ring_virtaddr - rx_ring->fbr1_offset);
-
- bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr1_num_entries)
- + 0xfff;
-
- pci_free_consistent(adapter->pdev, bufsize,
- rx_ring->fbr1_ring_virtaddr,
- rx_ring->fbr1_ring_physaddr);
-
- rx_ring->fbr1_ring_virtaddr = NULL;
- }
-
-#ifdef USE_FBR0
- /* Now the same for Free Buffer Ring 0 */
- if (rx_ring->fbr0_ring_virtaddr) {
- /* First the packet memory */
- for (index = 0; index <
- (rx_ring->fbr0_num_entries / FBR_CHUNKS); index++) {
- if (rx_ring->fbr0_mem_virtaddrs[index]) {
- bufsize =
- (rx_ring->fbr0_buffsize *
- (FBR_CHUNKS + 1)) - 1;
-
- pci_free_consistent(adapter->pdev,
- bufsize,
- rx_ring->fbr0_mem_virtaddrs[index],
- rx_ring->fbr0_mem_physaddrs[index]);
-
- rx_ring->fbr0_mem_virtaddrs[index] = NULL;
- }
- }
-
- /* Now the FIFO itself */
- rx_ring->fbr0_ring_virtaddr = (void *)((u8 *)
- rx_ring->fbr0_ring_virtaddr - rx_ring->fbr0_offset);
-
- bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr0_num_entries)
- + 0xfff;
-
- pci_free_consistent(adapter->pdev,
- bufsize,
- rx_ring->fbr0_ring_virtaddr,
- rx_ring->fbr0_ring_physaddr);
-
- rx_ring->fbr0_ring_virtaddr = NULL;
- }
-#endif
-
- /* Free Packet Status Ring */
- if (rx_ring->ps_ring_virtaddr) {
- pktstat_ringsize =
- sizeof(struct pkt_stat_desc) *
- adapter->rx_ring.psr_num_entries;
-
- pci_free_consistent(adapter->pdev, pktstat_ringsize,
- rx_ring->ps_ring_virtaddr,
- rx_ring->ps_ring_physaddr);
-
- rx_ring->ps_ring_virtaddr = NULL;
- }
-
- /* Free area of memory for the writeback of status information */
- if (rx_ring->rx_status_block) {
- pci_free_consistent(adapter->pdev,
- sizeof(struct rx_status_block),
- rx_ring->rx_status_block, rx_ring->rx_status_bus);
- rx_ring->rx_status_block = NULL;
- }
-
- /* Free receive buffer pool */
-
- /* Free receive packet pool */
-
- /* Destroy the lookaside (RFD) pool */
- if (adapter->flags & fMP_ADAPTER_RECV_LOOKASIDE) {
- kmem_cache_destroy(rx_ring->recv_lookaside);
- adapter->flags &= ~fMP_ADAPTER_RECV_LOOKASIDE;
- }
-
- /* Free the FBR Lookup Table */
-#ifdef USE_FBR0
- kfree(rx_ring->fbr[0]);
-#endif
-
- kfree(rx_ring->fbr[1]);
-
- /* Reset Counters */
- rx_ring->num_ready_recv = 0;
-}
-
-/**
- * et131x_init_recv - Initialize receive data structures.
- * @adapter: pointer to our private adapter structure
- *
- * Returns 0 on success and errno on failure (as defined in errno.h)
- */
-int et131x_init_recv(struct et131x_adapter *adapter)
-{
- int status = -ENOMEM;
- struct rfd *rfd = NULL;
- u32 rfdct;
- u32 numrfd = 0;
- struct rx_ring *rx_ring;
-
- /* Setup some convenience pointers */
- rx_ring = &adapter->rx_ring;
-
- /* Setup each RFD */
- for (rfdct = 0; rfdct < rx_ring->num_rfd; rfdct++) {
- rfd = kmem_cache_alloc(rx_ring->recv_lookaside,
- GFP_ATOMIC | GFP_DMA);
-
- if (!rfd) {
- dev_err(&adapter->pdev->dev,
- "Couldn't alloc RFD out of kmem_cache\n");
- status = -ENOMEM;
- continue;
- }
-
- rfd->skb = NULL;
-
- /* Add this RFD to the recv_list */
- list_add_tail(&rfd->list_node, &rx_ring->recv_list);
-
- /* Increment both the available RFD's, and the total RFD's. */
- rx_ring->num_ready_recv++;
- numrfd++;
- }
-
- if (numrfd > NIC_MIN_NUM_RFD)
- status = 0;
-
- rx_ring->num_rfd = numrfd;
-
- if (status != 0) {
- kmem_cache_free(rx_ring->recv_lookaside, rfd);
- dev_err(&adapter->pdev->dev,
- "Allocation problems in et131x_init_recv\n");
- }
- return status;
-}
-
-/**
- * et131x_config_rx_dma_regs - Start of Rx_DMA init sequence
- * @adapter: pointer to our adapter structure
- */
-void et131x_config_rx_dma_regs(struct et131x_adapter *adapter)
-{
- struct rxdma_regs __iomem *rx_dma = &adapter->regs->rxdma;
- struct rx_ring *rx_local = &adapter->rx_ring;
- struct fbr_desc *fbr_entry;
- u32 entry;
- u32 psr_num_des;
- unsigned long flags;
-
- /* Halt RXDMA to perform the reconfigure. */
- et131x_rx_dma_disable(adapter);
-
- /* Load the completion writeback physical address
- *
- * NOTE : pci_alloc_consistent(), used above to alloc DMA regions,
- * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses
- * are ever returned, make sure the high part is retrieved here
- * before storing the adjusted address.
- */
- writel((u32) ((u64)rx_local->rx_status_bus >> 32),
- &rx_dma->dma_wb_base_hi);
- writel((u32) rx_local->rx_status_bus, &rx_dma->dma_wb_base_lo);
-
- memset(rx_local->rx_status_block, 0, sizeof(struct rx_status_block));
-
- /* Set the address and parameters of the packet status ring into the
- * 1310's registers
- */
- writel((u32) ((u64)rx_local->ps_ring_physaddr >> 32),
- &rx_dma->psr_base_hi);
- writel((u32) rx_local->ps_ring_physaddr, &rx_dma->psr_base_lo);
- writel(rx_local->psr_num_entries - 1, &rx_dma->psr_num_des);
- writel(0, &rx_dma->psr_full_offset);
-
- psr_num_des = readl(&rx_dma->psr_num_des) & 0xFFF;
- writel((psr_num_des * LO_MARK_PERCENT_FOR_PSR) / 100,
- &rx_dma->psr_min_des);
-
- spin_lock_irqsave(&adapter->rcv_lock, flags);
-
- /* These local variables track the PSR in the adapter structure */
- rx_local->local_psr_full = 0;
-
- /* Now's the best time to initialize FBR1 contents */
- fbr_entry = (struct fbr_desc *) rx_local->fbr1_ring_virtaddr;
- for (entry = 0; entry < rx_local->fbr1_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++;
- }
-
- /* Set the address and parameters of Free buffer ring 1 (and 0 if
- * required) into the 1310's registers
- */
- writel((u32) (rx_local->fbr1_real_physaddr >> 32),
- &rx_dma->fbr1_base_hi);
- writel((u32) rx_local->fbr1_real_physaddr, &rx_dma->fbr1_base_lo);
- writel(rx_local->fbr1_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->local_fbr1_full = ET_DMA10_WRAP;
- writel(
- ((rx_local->fbr1_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->fbr0_ring_virtaddr;
- for (entry = 0; entry < rx_local->fbr0_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++;
- }
-
- writel((u32) (rx_local->fbr0_real_physaddr >> 32),
- &rx_dma->fbr0_base_hi);
- writel((u32) rx_local->fbr0_real_physaddr, &rx_dma->fbr0_base_lo);
- writel(rx_local->fbr0_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->local_fbr0_full = ET_DMA10_WRAP;
- writel(
- ((rx_local->fbr0_num_entries * LO_MARK_PERCENT_FOR_RX) / 100) - 1,
- &rx_dma->fbr0_min_des);
-#endif
-
- /* Program the number of packets we will receive before generating an
- * interrupt.
- * For version B silicon, this value gets updated once autoneg is
- *complete.
- */
- writel(PARM_RX_NUM_BUFS_DEF, &rx_dma->num_pkt_done);
-
- /* The "time_done" is not working correctly to coalesce interrupts
- * after a given time period, but rather is giving us an interrupt
- * regardless of whether we have received packets.
- * This value gets updated once autoneg is complete.
- */
- writel(PARM_RX_TIME_INT_DEF, &rx_dma->max_pkt_time);
-
- spin_unlock_irqrestore(&adapter->rcv_lock, flags);
-}
-
-/**
- * et131x_set_rx_dma_timer - Set the heartbeat timer according to line rate.
- * @adapter: pointer to our adapter structure
- */
-void et131x_set_rx_dma_timer(struct et131x_adapter *adapter)
-{
- struct phy_device *phydev = adapter->phydev;
-
- if (!phydev)
- return;
-
- /* For version B silicon, we do not use the RxDMA timer for 10 and 100
- * Mbits/s line rates. We do not enable and RxDMA interrupt coalescing.
- */
- if ((phydev->speed == SPEED_100) || (phydev->speed == SPEED_10)) {
- writel(0, &adapter->regs->rxdma.max_pkt_time);
- writel(1, &adapter->regs->rxdma.num_pkt_done);
- }
-}
-
-/**
- * NICReturnRFD - Recycle a RFD and put it back onto the receive list
- * @adapter: pointer to our adapter
- * @rfd: pointer to the RFD
- */
-static void nic_return_rfd(struct et131x_adapter *adapter, struct rfd *rfd)
-{
- struct rx_ring *rx_local = &adapter->rx_ring;
- struct rxdma_regs __iomem *rx_dma = &adapter->regs->rxdma;
- u16 buff_index = rfd->bufferindex;
- u8 ring_index = 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
- (ring_index == 0 && buff_index < rx_local->fbr0_num_entries) ||
-#endif
- (ring_index == 1 && buff_index < rx_local->fbr1_num_entries)) {
- spin_lock_irqsave(&adapter->fbr_lock, flags);
-
- if (ring_index == 1) {
- struct fbr_desc *next =
- (struct fbr_desc *) (rx_local->fbr1_ring_virtaddr) +
- 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[buff_index];
- next->addr_lo = rx_local->fbr[1]->bus_low[buff_index];
- next->word2 = buff_index;
-
- writel(bump_free_buff_ring(&rx_local->local_fbr1_full,
- rx_local->fbr1_num_entries - 1),
- &rx_dma->fbr1_full_offset);
- }
-#ifdef USE_FBR0
- else {
- struct fbr_desc *next = (struct fbr_desc *)
- rx_local->fbr0_ring_virtaddr +
- 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[buff_index];
- next->addr_lo = rx_local->fbr[0]->bus_low[buff_index];
- next->word2 = buff_index;
-
- writel(bump_free_buff_ring(&rx_local->local_fbr0_full,
- rx_local->fbr0_num_entries - 1),
- &rx_dma->fbr0_full_offset);
- }
-#endif
- spin_unlock_irqrestore(&adapter->fbr_lock, flags);
- } else {
- dev_err(&adapter->pdev->dev,
- "%s illegal Buffer Index returned\n", __func__);
- }
-
- /* The processing on this RFD is done, so put it back on the tail of
- * our list
- */
- spin_lock_irqsave(&adapter->rcv_lock, flags);
- list_add_tail(&rfd->list_node, &rx_local->recv_list);
- rx_local->num_ready_recv++;
- spin_unlock_irqrestore(&adapter->rcv_lock, flags);
-
- WARN_ON(rx_local->num_ready_recv > rx_local->num_rfd);
-}
-
-/**
- * et131x_rx_dma_disable - Stop of Rx_DMA on the ET1310
- * @adapter: pointer to our adapter structure
- */
-void et131x_rx_dma_disable(struct et131x_adapter *adapter)
-{
- u32 csr;
- /* Setup the receive dma configuration register */
- writel(0x00002001, &adapter->regs->rxdma.csr);
- csr = readl(&adapter->regs->rxdma.csr);
- if ((csr & 0x00020000) == 0) { /* Check halt status (bit 17) */
- udelay(5);
- csr = readl(&adapter->regs->rxdma.csr);
- if ((csr & 0x00020000) == 0)
- dev_err(&adapter->pdev->dev,
- "RX Dma failed to enter halt state. CSR 0x%08x\n",
- csr);
- }
-}
-
-/**
- * et131x_rx_dma_enable - re-start of Rx_DMA on the ET1310.
- * @adapter: pointer to our adapter structure
- */
-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.fbr1_buffsize == 4096)
- csr |= 0x0800;
- else if (adapter->rx_ring.fbr1_buffsize == 8192)
- csr |= 0x1000;
- else if (adapter->rx_ring.fbr1_buffsize == 16384)
- csr |= 0x1800;
-#ifdef USE_FBR0
- csr |= 0x0400; /* FBR0 enable */
- if (adapter->rx_ring.fbr0_buffsize == 256)
- csr |= 0x0100;
- else if (adapter->rx_ring.fbr0_buffsize == 512)
- csr |= 0x0200;
- else if (adapter->rx_ring.fbr0_buffsize == 1024)
- csr |= 0x0300;
-#endif
- writel(csr, &adapter->regs->rxdma.csr);
-
- csr = readl(&adapter->regs->rxdma.csr);
- if ((csr & 0x00020000) != 0) {
- udelay(5);
- csr = readl(&adapter->regs->rxdma.csr);
- if ((csr & 0x00020000) != 0) {
- dev_err(&adapter->pdev->dev,
- "RX Dma failed to exit halt state. CSR 0x%08x\n",
- csr);
- }
- }
-}
-
-/**
- * nic_rx_pkts - Checks the hardware for available packets
- * @adapter: pointer to our adapter
- *
- * Returns rfd, a pointer to our MPRFD.
- *
- * Checks the hardware for available packets, using completion ring
- * If packets are available, it gets an RFD from the recv_list, attaches
- * the packet to it, puts the RFD in the RecvPendList, and also returns
- * the pointer to the RFD.
- */
-static struct rfd *nic_rx_pkts(struct et131x_adapter *adapter)
-{
- struct rx_ring *rx_local = &adapter->rx_ring;
- struct rx_status_block *status;
- struct pkt_stat_desc *psr;
- struct rfd *rfd;
- u32 i;
- u8 *buf;
- unsigned long flags;
- struct list_head *element;
- u8 ring_index;
- u16 buff_index;
- u32 len;
- u32 word0;
- u32 word1;
-
- /* RX Status block is written by the DMA engine prior to every
- * interrupt. It contains the next to be used entry in the Packet
- * Status Ring, and also the two Free Buffer rings.
- */
- status = rx_local->rx_status_block;
- word1 = status->word1 >> 16; /* Get the useful bits */
-
- /* Check the PSR and wrap bits do not match */
- if ((word1 & 0x1FFF) == (rx_local->local_psr_full & 0x1FFF))
- /* Looks like this ring is not updated yet */
- return NULL;
-
- /* The packet status ring indicates that data is available. */
- psr = (struct pkt_stat_desc *) (rx_local->ps_ring_virtaddr) +
- (rx_local->local_psr_full & 0xFFF);
-
- /* Grab any information that is required once the PSR is
- * advanced, since we can no longer rely on the memory being
- * accurate
- */
- len = psr->word1 & 0xFFFF;
- ring_index = (psr->word1 >> 26) & 0x03;
- buff_index = (psr->word1 >> 16) & 0x3FF;
- word0 = psr->word0;
-
- /* Indicate that we have used this PSR entry. */
- /* FIXME wrap 12 */
- add_12bit(&rx_local->local_psr_full, 1);
- if (
- (rx_local->local_psr_full & 0xFFF) > rx_local->psr_num_entries - 1) {
- /* Clear psr full and toggle the wrap bit */
- rx_local->local_psr_full &= ~0xFFF;
- rx_local->local_psr_full ^= 0x1000;
- }
-
- writel(rx_local->local_psr_full,
- &adapter->regs->rxdma.psr_full_offset);
-
-#ifndef USE_FBR0
- if (ring_index != 1)
- return NULL;
-#endif
-
-#ifdef USE_FBR0
- if (ring_index > 1 ||
- (ring_index == 0 &&
- buff_index > rx_local->fbr0_num_entries - 1) ||
- (ring_index == 1 &&
- buff_index > rx_local->fbr1_num_entries - 1))
-#else
- if (ring_index != 1 || buff_index > rx_local->fbr1_num_entries - 1)
-#endif
- {
- /* Illegal buffer or ring index cannot be used by S/W*/
- dev_err(&adapter->pdev->dev,
- "NICRxPkts PSR Entry %d indicates "
- "length of %d and/or bad bi(%d)\n",
- rx_local->local_psr_full & 0xFFF,
- len, buff_index);
- return NULL;
- }
-
- /* Get and fill the RFD. */
- spin_lock_irqsave(&adapter->rcv_lock, flags);
-
- rfd = NULL;
- element = rx_local->recv_list.next;
- rfd = (struct rfd *) list_entry(element, struct rfd, list_node);
-
- if (rfd == NULL) {
- spin_unlock_irqrestore(&adapter->rcv_lock, flags);
- return NULL;
- }
-
- list_del(&rfd->list_node);
- rx_local->num_ready_recv--;
-
- spin_unlock_irqrestore(&adapter->rcv_lock, flags);
-
- rfd->bufferindex = buff_index;
- rfd->ringindex = ring_index;
-
- /* In V1 silicon, there is a bug which screws up filtering of
- * runt packets. Therefore runt packet filtering is disabled
- * in the MAC and the packets are dropped here. They are
- * also counted here.
- */
- if (len < (NIC_MIN_PACKET_SIZE + 4)) {
- adapter->stats.rx_other_errs++;
- len = 0;
- }
-
- if (len) {
- /* Determine if this is a multicast packet coming in */
- if ((word0 & ALCATEL_MULTICAST_PKT) &&
- !(word0 & ALCATEL_BROADCAST_PKT)) {
- /* Promiscuous mode and Multicast mode are
- * not mutually exclusive as was first
- * thought. I guess Promiscuous is just
- * considered a super-set of the other
- * filters. Generally filter is 0x2b when in
- * promiscuous mode.
- */
- if ((adapter->packet_filter &
- ET131X_PACKET_TYPE_MULTICAST)
- && !(adapter->packet_filter &
- ET131X_PACKET_TYPE_PROMISCUOUS)
- && !(adapter->packet_filter &
- ET131X_PACKET_TYPE_ALL_MULTICAST)) {
- buf = rx_local->fbr[ring_index]->
- virt[buff_index];
-
- /* Loop through our list to see if the
- * destination address of this packet
- * matches one in our list.
- */
- for (i = 0; i < adapter->multicast_addr_count;
- i++) {
- if (buf[0] ==
- adapter->multicast_list[i][0]
- && buf[1] ==
- adapter->multicast_list[i][1]
- && buf[2] ==
- adapter->multicast_list[i][2]
- && buf[3] ==
- adapter->multicast_list[i][3]
- && buf[4] ==
- adapter->multicast_list[i][4]
- && buf[5] ==
- adapter->multicast_list[i][5]) {
- break;
- }
- }
-
- /* If our index is equal to the number
- * of Multicast address we have, then
- * this means we did not find this
- * packet's matching address in our
- * list. Set the len to zero,
- * so we free our RFD when we return
- * from this function.
- */
- if (i == adapter->multicast_addr_count)
- len = 0;
- }
-
- if (len > 0)
- adapter->stats.multicast_pkts_rcvd++;
- } else if (word0 & ALCATEL_BROADCAST_PKT)
- adapter->stats.broadcast_pkts_rcvd++;
- else
- /* Not sure what this counter measures in
- * promiscuous mode. Perhaps we should check
- * the MAC address to see if it is directed
- * to us in promiscuous mode.
- */
- adapter->stats.unicast_pkts_rcvd++;
- }
-
- if (len > 0) {
- struct sk_buff *skb = NULL;
-
- /*rfd->len = len - 4; */
- rfd->len = len;
-
- skb = dev_alloc_skb(rfd->len + 2);
- if (!skb) {
- dev_err(&adapter->pdev->dev,
- "Couldn't alloc an SKB for Rx\n");
- return NULL;
- }
-
- adapter->net_stats.rx_bytes += rfd->len;
-
- memcpy(skb_put(skb, rfd->len),
- rx_local->fbr[ring_index]->virt[buff_index],
- rfd->len);
-
- skb->dev = adapter->netdev;
- skb->protocol = eth_type_trans(skb, adapter->netdev);
- skb->ip_summed = CHECKSUM_NONE;
-
- netif_rx(skb);
- } else {
- rfd->len = 0;
- }
-
- nic_return_rfd(adapter, rfd);
- return rfd;
-}
-
-/**
- * et131x_reset_recv - Reset the receive list
- * @adapter: pointer to our adapter
- *
- * Assumption, Rcv spinlock has been acquired.
- */
-void et131x_reset_recv(struct et131x_adapter *adapter)
-{
- WARN_ON(list_empty(&adapter->rx_ring.recv_list));
-}
-
-/**
- * et131x_handle_recv_interrupt - Interrupt handler for receive processing
- * @adapter: pointer to our adapter
- *
- * Assumption, Rcv spinlock has been acquired.
- */
-void et131x_handle_recv_interrupt(struct et131x_adapter *adapter)
-{
- struct rfd *rfd = NULL;
- u32 count = 0;
- bool done = true;
-
- /* Process up to available RFD's */
- while (count < NUM_PACKETS_HANDLED) {
- if (list_empty(&adapter->rx_ring.recv_list)) {
- WARN_ON(adapter->rx_ring.num_ready_recv != 0);
- done = false;
- break;
- }
-
- rfd = nic_rx_pkts(adapter);
-
- if (rfd == NULL)
- break;
-
- /* Do not receive any packets until a filter has been set.
- * Do not receive any packets until we have link.
- * If length is zero, return the RFD in order to advance the
- * Free buffer ring.
- */
- if (!adapter->packet_filter ||
- !netif_carrier_ok(adapter->netdev) ||
- rfd->len == 0)
- continue;
-
- /* Increment the number of packets we received */
- adapter->net_stats.rx_packets++;
-
- /* Set the status on the packet, either resources or success */
- if (adapter->rx_ring.num_ready_recv < RFD_LOW_WATER_MARK) {
- dev_warn(&adapter->pdev->dev,
- "RFD's are running out\n");
- }
- count++;
- }
-
- if (count == NUM_PACKETS_HANDLED || !done) {
- adapter->rx_ring.unfinished_receives = true;
- writel(PARM_TX_TIME_INT_DEF * NANO_IN_A_MICRO,
- &adapter->regs->global.watchdog_timer);
- } else
- /* Watchdog timer will disable itself if appropriate. */
- adapter->rx_ring.unfinished_receives = false;
-}
-