-/**********************************************************************
- * Author: Cavium Networks
- *
- * Contact: support@caviumnetworks.com
- * This file is part of the OCTEON SDK
+/*
+ * This file is based on code from OCTEON SDK by Cavium Networks.
*
* Copyright (c) 2003-2010 Cavium Networks
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, Version 2, as
* published by the Free Software Foundation.
- *
- * This file is distributed in the hope that it will be useful, but
- * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
- * NONINFRINGEMENT. See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this file; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- * or visit http://www.gnu.org/licenses/.
- *
- * This file may also be available under a different license from Cavium.
- * Contact Cavium Networks for more information
-**********************************************************************/
+ */
+
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/cache.h>
/**
* cvm_oct_do_interrupt - interrupt handler.
+ * @cpl: Interrupt number. Unused
+ * @dev_id: Cookie to identify the device. Unused
*
* The interrupt occurs whenever the POW has packets in our group.
*
*/
static inline int cvm_oct_check_rcv_error(cvmx_wqe_t *work)
{
- if ((work->word2.snoip.err_code == 10) && (work->len <= 64)) {
+ int port;
+
+ if (octeon_has_feature(OCTEON_FEATURE_PKND))
+ port = work->word0.pip.cn68xx.pknd;
+ else
+ port = work->word1.cn38xx.ipprt;
+
+ if ((work->word2.snoip.err_code == 10) && (work->word1.len <= 64)) {
/*
* Ignore length errors on min size packets. Some
* equipment incorrectly pads packets to 64+4FCS
* instead of 60+4FCS. Note these packets still get
* counted as frame errors.
*/
- } else
- if (USE_10MBPS_PREAMBLE_WORKAROUND
- && ((work->word2.snoip.err_code == 5)
- || (work->word2.snoip.err_code == 7))) {
-
+ } else if (work->word2.snoip.err_code == 5 ||
+ work->word2.snoip.err_code == 7) {
/*
* We received a packet with either an alignment error
* or a FCS error. This may be signalling that we are
* packet to determine if we can remove a non spec
* preamble and generate a correct packet.
*/
- int interface = cvmx_helper_get_interface_num(work->ipprt);
- int index = cvmx_helper_get_interface_index_num(work->ipprt);
+ int interface = cvmx_helper_get_interface_num(port);
+ int index = cvmx_helper_get_interface_index_num(port);
union cvmx_gmxx_rxx_frm_ctl gmxx_rxx_frm_ctl;
gmxx_rxx_frm_ctl.u64 =
cvmx_read_csr(CVMX_GMXX_RXX_FRM_CTL(index, interface));
if (gmxx_rxx_frm_ctl.s.pre_chk == 0) {
- uint8_t *ptr =
+ u8 *ptr =
cvmx_phys_to_ptr(work->packet_ptr.s.addr);
int i = 0;
- while (i < work->len - 1) {
+ while (i < work->word1.len - 1) {
if (*ptr != 0x55)
break;
ptr++;
if (*ptr == 0xd5) {
/*
printk_ratelimited("Port %d received 0xd5 preamble\n",
- work->ipprt);
+ port);
*/
work->packet_ptr.s.addr += i + 1;
- work->len -= i + 5;
+ work->word1.len -= i + 5;
} else if ((*ptr & 0xf) == 0xd) {
/*
printk_ratelimited("Port %d received 0x?d preamble\n",
- work->ipprt);
+ port);
*/
work->packet_ptr.s.addr += i;
- work->len -= i + 4;
- for (i = 0; i < work->len; i++) {
+ work->word1.len -= i + 4;
+ for (i = 0; i < work->word1.len; i++) {
*ptr =
((*ptr & 0xf0) >> 4) |
((*(ptr + 1) & 0xf) << 4);
}
} else {
printk_ratelimited("Port %d unknown preamble, packet dropped\n",
- work->ipprt);
+ port);
/*
cvmx_helper_dump_packet(work);
*/
}
} else {
printk_ratelimited("Port %d receive error code %d, packet dropped\n",
- work->ipprt, work->word2.snoip.err_code);
+ port, work->word2.snoip.err_code);
cvm_oct_free_work(work);
return 1;
}
static int cvm_oct_napi_poll(struct napi_struct *napi, int budget)
{
const int coreid = cvmx_get_core_num();
- uint64_t old_group_mask;
- uint64_t old_scratch;
+ u64 old_group_mask;
+ u64 old_scratch;
int rx_count = 0;
int did_work_request = 0;
int packet_not_copied;
}
/* Only allow work for our group (and preserve priorities) */
- old_group_mask = cvmx_read_csr(CVMX_POW_PP_GRP_MSKX(coreid));
- cvmx_write_csr(CVMX_POW_PP_GRP_MSKX(coreid),
- (old_group_mask & ~0xFFFFull) | 1 << pow_receive_group);
+ if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
+ old_group_mask = cvmx_read_csr(CVMX_SSO_PPX_GRP_MSK(coreid));
+ cvmx_write_csr(CVMX_SSO_PPX_GRP_MSK(coreid),
+ 1ull << pow_receive_group);
+ cvmx_read_csr(CVMX_SSO_PPX_GRP_MSK(coreid)); /* Flush */
+ } else {
+ old_group_mask = cvmx_read_csr(CVMX_POW_PP_GRP_MSKX(coreid));
+ cvmx_write_csr(CVMX_POW_PP_GRP_MSKX(coreid),
+ (old_group_mask & ~0xFFFFull) | 1 << pow_receive_group);
+ }
if (USE_ASYNC_IOBDMA) {
cvmx_pow_work_request_async(CVMX_SCR_SCRATCH, CVMX_POW_NO_WAIT);
struct sk_buff **pskb = NULL;
int skb_in_hw;
cvmx_wqe_t *work;
+ int port;
if (USE_ASYNC_IOBDMA && did_work_request)
work = cvmx_pow_work_response_async(CVMX_SCR_SCRATCH);
prefetch(work);
did_work_request = 0;
if (work == NULL) {
- union cvmx_pow_wq_int wq_int;
+ if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
+ cvmx_write_csr(CVMX_SSO_WQ_IQ_DIS,
+ 1ull << pow_receive_group);
+ cvmx_write_csr(CVMX_SSO_WQ_INT,
+ 1ull << pow_receive_group);
+ } else {
+ union cvmx_pow_wq_int wq_int;
- wq_int.u64 = 0;
- wq_int.s.iq_dis = 1 << pow_receive_group;
- wq_int.s.wq_int = 1 << pow_receive_group;
- cvmx_write_csr(CVMX_POW_WQ_INT, wq_int.u64);
+ wq_int.u64 = 0;
+ wq_int.s.iq_dis = 1 << pow_receive_group;
+ wq_int.s.wq_int = 1 << pow_receive_group;
+ cvmx_write_csr(CVMX_POW_WQ_INT, wq_int.u64);
+ }
break;
}
pskb = (struct sk_buff **)(cvm_oct_get_buffer_ptr(work->packet_ptr) -
}
rx_count++;
- skb_in_hw = USE_SKBUFFS_IN_HW && work->word2.s.bufs == 1;
+ skb_in_hw = work->word2.s.bufs == 1;
if (likely(skb_in_hw)) {
skb = *pskb;
prefetch(&skb->head);
prefetch(&skb->len);
}
- prefetch(cvm_oct_device[work->ipprt]);
+
+ if (octeon_has_feature(OCTEON_FEATURE_PKND))
+ port = work->word0.pip.cn68xx.pknd;
+ else
+ port = work->word1.cn38xx.ipprt;
+
+ prefetch(cvm_oct_device[port]);
/* Immediately throw away all packets with receive errors */
if (unlikely(work->word2.snoip.rcv_error)) {
skb->data = skb->head + work->packet_ptr.s.addr -
cvmx_ptr_to_phys(skb->head);
prefetch(skb->data);
- skb->len = work->len;
+ skb->len = work->word1.len;
skb_set_tail_pointer(skb, skb->len);
packet_not_copied = 1;
} else {
* We have to copy the packet. First allocate
* an skbuff for it.
*/
- skb = dev_alloc_skb(work->len);
+ skb = dev_alloc_skb(work->word1.len);
if (!skb) {
cvm_oct_free_work(work);
continue;
* entirely stored in the work entry.
*/
if (unlikely(work->word2.s.bufs == 0)) {
- uint8_t *ptr = work->packet_data;
+ u8 *ptr = work->packet_data;
if (likely(!work->word2.s.not_IP)) {
/*
else
ptr += 6;
}
- memcpy(skb_put(skb, work->len), ptr, work->len);
+ memcpy(skb_put(skb, work->word1.len), ptr,
+ work->word1.len);
/* No packet buffers to free */
} else {
int segments = work->word2.s.bufs;
union cvmx_buf_ptr segment_ptr =
work->packet_ptr;
- int len = work->len;
+ int len = work->word1.len;
while (segments--) {
union cvmx_buf_ptr next_ptr =
}
packet_not_copied = 0;
}
-
- if (likely((work->ipprt < TOTAL_NUMBER_OF_PORTS) &&
- cvm_oct_device[work->ipprt])) {
- struct net_device *dev = cvm_oct_device[work->ipprt];
+ if (likely((port < TOTAL_NUMBER_OF_PORTS) &&
+ cvm_oct_device[port])) {
+ struct net_device *dev = cvm_oct_device[port];
struct octeon_ethernet *priv = netdev_priv(dev);
/*
skb->ip_summed = CHECKSUM_UNNECESSARY;
/* Increment RX stats for virtual ports */
- if (work->ipprt >= CVMX_PIP_NUM_INPUT_PORTS) {
+ if (port >= CVMX_PIP_NUM_INPUT_PORTS) {
#ifdef CONFIG_64BIT
atomic64_add(1,
(atomic64_t *)&priv->stats.rx_packets);
* doesn't exist.
*/
printk_ratelimited("Port %d not controlled by Linux, packet dropped\n",
- work->ipprt);
+ port);
dev_kfree_skb_irq(skb);
}
/*
* Check to see if the skbuff and work share the same
* packet buffer.
*/
- if (USE_SKBUFFS_IN_HW && likely(packet_not_copied)) {
+ if (likely(packet_not_copied)) {
/*
* This buffer needs to be replaced, increment
* the number of buffers we need to free by
cvmx_fau_atomic_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE,
1);
- cvmx_fpa_free(work, CVMX_FPA_WQE_POOL,
- DONT_WRITEBACK(1));
+ cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, 1);
} else {
cvm_oct_free_work(work);
}
}
/* Restore the original POW group mask */
- cvmx_write_csr(CVMX_POW_PP_GRP_MSKX(coreid), old_group_mask);
+ if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
+ cvmx_write_csr(CVMX_SSO_PPX_GRP_MSK(coreid), old_group_mask);
+ cvmx_read_csr(CVMX_SSO_PPX_GRP_MSK(coreid)); /* Flush */
+ } else {
+ cvmx_write_csr(CVMX_POW_PP_GRP_MSKX(coreid), old_group_mask);
+ }
+
if (USE_ASYNC_IOBDMA) {
/* Restore the scratch area */
cvmx_scratch_write64(CVMX_SCR_SCRATCH, old_scratch);
{
int i;
struct net_device *dev_for_napi = NULL;
- union cvmx_pow_wq_int_thrx int_thr;
- union cvmx_pow_wq_int_pc int_pc;
for (i = 0; i < TOTAL_NUMBER_OF_PORTS; i++) {
if (cvm_oct_device[i]) {
disable_irq_nosync(OCTEON_IRQ_WORKQ0 + pow_receive_group);
- int_thr.u64 = 0;
- int_thr.s.tc_en = 1;
- int_thr.s.tc_thr = 1;
/* Enable POW interrupt when our port has at least one packet */
- cvmx_write_csr(CVMX_POW_WQ_INT_THRX(pow_receive_group), int_thr.u64);
-
- int_pc.u64 = 0;
- int_pc.s.pc_thr = 5;
- cvmx_write_csr(CVMX_POW_WQ_INT_PC, int_pc.u64);
+ if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
+ union cvmx_sso_wq_int_thrx int_thr;
+ union cvmx_pow_wq_int_pc int_pc;
+
+ int_thr.u64 = 0;
+ int_thr.s.tc_en = 1;
+ int_thr.s.tc_thr = 1;
+ cvmx_write_csr(CVMX_SSO_WQ_INT_THRX(pow_receive_group),
+ int_thr.u64);
+
+ int_pc.u64 = 0;
+ int_pc.s.pc_thr = 5;
+ cvmx_write_csr(CVMX_SSO_WQ_INT_PC, int_pc.u64);
+ } else {
+ union cvmx_pow_wq_int_thrx int_thr;
+ union cvmx_pow_wq_int_pc int_pc;
+
+ int_thr.u64 = 0;
+ int_thr.s.tc_en = 1;
+ int_thr.s.tc_thr = 1;
+ cvmx_write_csr(CVMX_POW_WQ_INT_THRX(pow_receive_group),
+ int_thr.u64);
+
+ int_pc.u64 = 0;
+ int_pc.s.pc_thr = 5;
+ cvmx_write_csr(CVMX_POW_WQ_INT_PC, int_pc.u64);
+ }
/* Schedule NAPI now. This will indirectly enable the interrupt. */
napi_schedule(&cvm_oct_napi);
Code Review / kvmfornfv.git / blobdiff