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net: ti: icssg-prueth: add packet timestamping and ptp support

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Add packet timestamping TS and PTP PHC clock support.

For AM65x and AM64x:
 - IEP1 is not used
 - IEP0 is configured in shadow mode with 1ms cycle and shared between
Linux and FW. It provides time and TS in number cycles, so special
conversation in ns is required.
 - IEP0 shared between PRUeth ports.
 - IEP0 supports PPS, periodic output.
 - IEP0 settime() and enabling PPS required FW interraction.
 - RX TS provided with each packet in CPPI5 descriptor.
 - TX TS returned through separate ICSSG hw queues for each port. TX TS
readiness is signaled by INTC IRQ. Only one packet at time can be requested
for TX TS.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Co-developed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Roger Quadros 2023-08-24 17:16:17 +05:30 committed by David S. Miller
parent c1e0230eea
commit 186734c158
5 changed files with 467 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/ethernet/ti/Kconfig
View File

@ -186,6 +186,7 @@ config CPMAC
config TI_ICSSG_PRUETH
tristate "TI Gigabit PRU Ethernet driver"
select PHYLIB
select TI_ICSS_IEP
depends on PRU_REMOTEPROC
depends on ARCH_K3 && OF && TI_K3_UDMA_GLUE_LAYER
help

1
drivers/net/ethernet/ti/icssg/icss_iep.h
View File

@ -13,6 +13,7 @@
#include <linux/regmap.h>
struct icss_iep;
extern const struct icss_iep_clockops prueth_iep_clockops;
/* Firmware specific clock operations */
struct icss_iep_clockops {

21
drivers/net/ethernet/ti/icssg/icssg_ethtool.c
View File

@ -109,6 +109,26 @@ static void emac_get_ethtool_stats(struct net_device *ndev,
*(data++) = emac->stats[i];
}
static int emac_get_ts_info(struct net_device *ndev,
struct ethtool_ts_info *info)
{
struct prueth_emac *emac = netdev_priv(ndev);
info->so_timestamping =
SOF_TIMESTAMPING_TX_HARDWARE |
SOF_TIMESTAMPING_TX_SOFTWARE |
SOF_TIMESTAMPING_RX_HARDWARE |
SOF_TIMESTAMPING_RX_SOFTWARE |
SOF_TIMESTAMPING_SOFTWARE |
SOF_TIMESTAMPING_RAW_HARDWARE;
info->phc_index = icss_iep_get_ptp_clock_idx(emac->iep);
info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) | BIT(HWTSTAMP_FILTER_ALL);
return 0;
}
static int emac_set_channels(struct net_device *ndev,
struct ethtool_channels *ch)
{
@ -176,6 +196,7 @@ const struct ethtool_ops icssg_ethtool_ops = {
.get_sset_count = emac_get_sset_count,
.get_ethtool_stats = emac_get_ethtool_stats,
.get_strings = emac_get_strings,
.get_ts_info = emac_get_ts_info,
.get_channels = emac_get_channels,
.set_channels = emac_set_channels,
.get_link_ksettings = emac_get_link_ksettings,

424
drivers/net/ethernet/ti/icssg/icssg_prueth.c
View File

@ -56,6 +56,8 @@
/* CTRLMMR_ICSSG_RGMII_CTRL register bits */
#define ICSSG_CTRL_RGMII_ID_MODE BIT(24)
#define IEP_DEFAULT_CYCLE_TIME_NS 1000000 /* 1 ms */
static void prueth_cleanup_rx_chns(struct prueth_emac *emac,
struct prueth_rx_chn *rx_chn,
int max_rflows)
@ -471,6 +473,37 @@ static int prueth_dma_rx_push(struct prueth_emac *emac,
desc_rx, desc_dma);
}
static u64 icssg_ts_to_ns(u32 hi_sw, u32 hi, u32 lo, u32 cycle_time_ns)
{
u32 iepcount_lo, iepcount_hi, hi_rollover_count;
u64 ns;
iepcount_lo = lo & GENMASK(19, 0);
iepcount_hi = (hi & GENMASK(11, 0)) << 12 | lo >> 20;
hi_rollover_count = hi >> 11;
ns = ((u64)hi_rollover_count) << 23 | (iepcount_hi + hi_sw);
ns = ns * cycle_time_ns + iepcount_lo;
return ns;
}
static void emac_rx_timestamp(struct prueth_emac *emac,
struct sk_buff *skb, u32 *psdata)
{
struct skb_shared_hwtstamps *ssh;
u64 ns;
u32 hi_sw = readl(emac->prueth->shram.va +
TIMESYNC_FW_WC_COUNT_HI_SW_OFFSET_OFFSET);
ns = icssg_ts_to_ns(hi_sw, psdata[1], psdata[0],
IEP_DEFAULT_CYCLE_TIME_NS);
ssh = skb_hwtstamps(skb);
memset(ssh, 0, sizeof(*ssh));
ssh->hwtstamp = ns_to_ktime(ns);
}
static int emac_rx_packet(struct prueth_emac *emac, u32 flow_id)
{
struct prueth_rx_chn *rx_chn = &emac->rx_chns;
@ -480,6 +513,7 @@ static int emac_rx_packet(struct prueth_emac *emac, u32 flow_id)
struct sk_buff *skb, *new_skb;
dma_addr_t desc_dma, buf_dma;
void **swdata;
u32 *psdata;
int ret;
ret = k3_udma_glue_pop_rx_chn(rx_chn->rx_chn, flow_id, &desc_dma);
@ -497,6 +531,11 @@ static int emac_rx_packet(struct prueth_emac *emac, u32 flow_id)
swdata = cppi5_hdesc_get_swdata(desc_rx);
skb = *swdata;
psdata = cppi5_hdesc_get_psdata(desc_rx);
/* RX HW timestamp */
if (emac->rx_ts_enabled)
emac_rx_timestamp(emac, skb, psdata);
cppi5_hdesc_get_obuf(desc_rx, &buf_dma, &buf_dma_len);
k3_udma_glue_rx_cppi5_to_dma_addr(rx_chn->rx_chn, &buf_dma);
pkt_len = cppi5_hdesc_get_pktlen(desc_rx);
@ -557,6 +596,86 @@ static void prueth_rx_cleanup(void *data, dma_addr_t desc_dma)
dev_kfree_skb_any(skb);
}
static int emac_get_tx_ts(struct prueth_emac *emac,
struct emac_tx_ts_response *rsp)
{
struct prueth *prueth = emac->prueth;
int slice = prueth_emac_slice(emac);
int addr;
addr = icssg_queue_pop(prueth, slice == 0 ?
ICSSG_TS_POP_SLICE0 : ICSSG_TS_POP_SLICE1);
if (addr < 0)
return addr;
memcpy_fromio(rsp, prueth->shram.va + addr, sizeof(*rsp));
/* return buffer back for to pool */
icssg_queue_push(prueth, slice == 0 ?
ICSSG_TS_PUSH_SLICE0 : ICSSG_TS_PUSH_SLICE1, addr);
return 0;
}
static void tx_ts_work(struct prueth_emac *emac)
{
struct skb_shared_hwtstamps ssh;
struct emac_tx_ts_response tsr;
struct sk_buff *skb;
int ret = 0;
u32 hi_sw;
u64 ns;
/* There may be more than one pending requests */
while (1) {
ret = emac_get_tx_ts(emac, &tsr);
if (ret) /* nothing more */
break;
if (tsr.cookie >= PRUETH_MAX_TX_TS_REQUESTS ||
!emac->tx_ts_skb[tsr.cookie]) {
netdev_err(emac->ndev, "Invalid TX TS cookie 0x%x\n",
tsr.cookie);
break;
}
skb = emac->tx_ts_skb[tsr.cookie];
emac->tx_ts_skb[tsr.cookie] = NULL; /* free slot */
if (!skb) {
netdev_err(emac->ndev, "Driver Bug! got NULL skb\n");
break;
}
hi_sw = readl(emac->prueth->shram.va +
TIMESYNC_FW_WC_COUNT_HI_SW_OFFSET_OFFSET);
ns = icssg_ts_to_ns(hi_sw, tsr.hi_ts, tsr.lo_ts,
IEP_DEFAULT_CYCLE_TIME_NS);
memset(&ssh, 0, sizeof(ssh));
ssh.hwtstamp = ns_to_ktime(ns);
skb_tstamp_tx(skb, &ssh);
dev_consume_skb_any(skb);
if (atomic_dec_and_test(&emac->tx_ts_pending)) /* no more? */
break;
}
}
static int prueth_tx_ts_cookie_get(struct prueth_emac *emac)
{
int i;
/* search and get the next free slot */
for (i = 0; i < PRUETH_MAX_TX_TS_REQUESTS; i++) {
if (!emac->tx_ts_skb[i]) {
emac->tx_ts_skb[i] = ERR_PTR(-EBUSY); /* reserve slot */
return i;
}
}
return -EBUSY;
}
/**
* emac_ndo_start_xmit - EMAC Transmit function
* @skb: SKB pointer
@ -577,6 +696,8 @@ static enum netdev_tx emac_ndo_start_xmit(struct sk_buff *skb, struct net_device
struct prueth_tx_chn *tx_chn;
dma_addr_t desc_dma, buf_dma;
int i, ret = 0, q_idx;
bool in_tx_ts = 0;
int tx_ts_cookie;
void **swdata;
u32 pkt_len;
u32 *epib;
@ -608,6 +729,18 @@ static enum netdev_tx emac_ndo_start_xmit(struct sk_buff *skb, struct net_device
epib = first_desc->epib;
epib[0] = 0;
epib[1] = 0;
if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
emac->tx_ts_enabled) {
tx_ts_cookie = prueth_tx_ts_cookie_get(emac);
if (tx_ts_cookie >= 0) {
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
/* Request TX timestamp */
epib[0] = (u32)tx_ts_cookie;
epib[1] = 0x80000000; /* TX TS request */
emac->tx_ts_skb[tx_ts_cookie] = skb_get(skb);
in_tx_ts = 1;
}
}
/* set dst tag to indicate internal qid at the firmware which is at
* bit8..bit15. bit0..bit7 indicates port num for directed
@ -629,7 +762,7 @@ static enum netdev_tx emac_ndo_start_xmit(struct sk_buff *skb, struct net_device
if (!next_desc) {
netdev_err(ndev,
"tx: failed to allocate frag. descriptor\n");
goto free_desc_stop_q_busy;
goto free_desc_stop_q_busy_cleanup_tx_ts;
}
buf_dma = skb_frag_dma_map(tx_chn->dma_dev, frag, 0, frag_size,
@ -638,7 +771,7 @@ static enum netdev_tx emac_ndo_start_xmit(struct sk_buff *skb, struct net_device
netdev_err(ndev, "tx: Failed to map skb page\n");
k3_cppi_desc_pool_free(tx_chn->desc_pool, next_desc);
ret = NETDEV_TX_OK;
goto drop_free_descs;
goto cleanup_tx_ts;
}
cppi5_hdesc_reset_hbdesc(next_desc);
@ -670,6 +803,9 @@ static enum netdev_tx emac_ndo_start_xmit(struct sk_buff *skb, struct net_device
goto drop_free_descs;
}
if (in_tx_ts)
atomic_inc(&emac->tx_ts_pending);
if (k3_cppi_desc_pool_avail(tx_chn->desc_pool) < MAX_SKB_FRAGS) {
netif_tx_stop_queue(netif_txq);
/* Barrier, so that stop_queue visible to other cpus */
@ -682,6 +818,12 @@ static enum netdev_tx emac_ndo_start_xmit(struct sk_buff *skb, struct net_device
return NETDEV_TX_OK;
cleanup_tx_ts:
if (in_tx_ts) {
dev_kfree_skb_any(emac->tx_ts_skb[tx_ts_cookie]);
emac->tx_ts_skb[tx_ts_cookie] = NULL;
}
drop_free_descs:
prueth_xmit_free(tx_chn, first_desc);
@ -694,7 +836,11 @@ drop_free_skb:
return ret;
free_desc_stop_q_busy:
free_desc_stop_q_busy_cleanup_tx_ts:
if (in_tx_ts) {
dev_kfree_skb_any(emac->tx_ts_skb[tx_ts_cookie]);
emac->tx_ts_skb[tx_ts_cookie] = NULL;
}
prueth_xmit_free(tx_chn, first_desc);
drop_stop_q_busy:
@ -717,6 +863,16 @@ static void prueth_tx_cleanup(void *data, dma_addr_t desc_dma)
dev_kfree_skb_any(skb);
}
static irqreturn_t prueth_tx_ts_irq(int irq, void *dev_id)
{
struct prueth_emac *emac = dev_id;
/* currently only TX timestamp is being returned */
tx_ts_work(emac);
return IRQ_HANDLED;
}
static irqreturn_t prueth_rx_irq(int irq, void *dev_id)
{
struct prueth_emac *emac = dev_id;
@ -820,6 +976,18 @@ static void prueth_emac_stop(struct prueth_emac *emac)
rproc_shutdown(prueth->pru[slice]);
}
static void prueth_cleanup_tx_ts(struct prueth_emac *emac)
{
int i;
for (i = 0; i < PRUETH_MAX_TX_TS_REQUESTS; i++) {
if (emac->tx_ts_skb[i]) {
dev_kfree_skb_any(emac->tx_ts_skb[i]);
emac->tx_ts_skb[i] = NULL;
}
}
}
/* called back by PHY layer if there is change in link state of hw port*/
static void emac_adjust_link(struct net_device *ndev)
{
@ -881,6 +1049,7 @@ static void emac_adjust_link(struct net_device *ndev)
netif_tx_wake_all_queues(ndev);
} else {
netif_tx_stop_all_queues(ndev);
prueth_cleanup_tx_ts(emac);
}
}
@ -992,6 +1161,139 @@ static int emac_phy_connect(struct prueth_emac *emac)
return 0;
}
static u64 prueth_iep_gettime(void *clockops_data, struct ptp_system_timestamp *sts)
{
u32 hi_rollover_count, hi_rollover_count_r;
struct prueth_emac *emac = clockops_data;
struct prueth *prueth = emac->prueth;
void __iomem *fw_hi_r_count_addr;
void __iomem *fw_count_hi_addr;
u32 iepcount_hi, iepcount_hi_r;
unsigned long flags;
u32 iepcount_lo;
u64 ts = 0;
fw_count_hi_addr = prueth->shram.va + TIMESYNC_FW_WC_COUNT_HI_SW_OFFSET_OFFSET;
fw_hi_r_count_addr = prueth->shram.va + TIMESYNC_FW_WC_HI_ROLLOVER_COUNT_OFFSET;
local_irq_save(flags);
do {
iepcount_hi = icss_iep_get_count_hi(emac->iep);
iepcount_hi += readl(fw_count_hi_addr);
hi_rollover_count = readl(fw_hi_r_count_addr);
ptp_read_system_prets(sts);
iepcount_lo = icss_iep_get_count_low(emac->iep);
ptp_read_system_postts(sts);
iepcount_hi_r = icss_iep_get_count_hi(emac->iep);
iepcount_hi_r += readl(fw_count_hi_addr);
hi_rollover_count_r = readl(fw_hi_r_count_addr);
} while ((iepcount_hi_r != iepcount_hi) ||
(hi_rollover_count != hi_rollover_count_r));
local_irq_restore(flags);
ts = ((u64)hi_rollover_count) << 23 | iepcount_hi;
ts = ts * (u64)IEP_DEFAULT_CYCLE_TIME_NS + iepcount_lo;
return ts;
}
static void prueth_iep_settime(void *clockops_data, u64 ns)
{
struct icssg_setclock_desc __iomem *sc_descp;
struct prueth_emac *emac = clockops_data;
struct icssg_setclock_desc sc_desc;
u64 cyclecount;
u32 cycletime;
int timeout;
if (!emac->fw_running)
return;
sc_descp = emac->prueth->shram.va + TIMESYNC_FW_WC_SETCLOCK_DESC_OFFSET;
cycletime = IEP_DEFAULT_CYCLE_TIME_NS;
cyclecount = ns / cycletime;
memset(&sc_desc, 0, sizeof(sc_desc));
sc_desc.margin = cycletime - 1000;
sc_desc.cyclecounter0_set = cyclecount & GENMASK(31, 0);
sc_desc.cyclecounter1_set = (cyclecount & GENMASK(63, 32)) >> 32;
sc_desc.iepcount_set = ns % cycletime;
sc_desc.CMP0_current = cycletime - 4; //Count from 0 to (cycle time)-4
memcpy_toio(sc_descp, &sc_desc, sizeof(sc_desc));
writeb(1, &sc_descp->request);
timeout = 5; /* fw should take 2-3 ms */
while (timeout--) {
if (readb(&sc_descp->acknowledgment))
return;
usleep_range(500, 1000);
}
dev_err(emac->prueth->dev, "settime timeout\n");
}
static int prueth_perout_enable(void *clockops_data,
struct ptp_perout_request *req, int on,
u64 *cmp)
{
struct prueth_emac *emac = clockops_data;
u32 reduction_factor = 0, offset = 0;
struct timespec64 ts;
u64 ns_period;
if (!on)
return 0;
/* Any firmware specific stuff for PPS/PEROUT handling */
ts.tv_sec = req->period.sec;
ts.tv_nsec = req->period.nsec;
ns_period = timespec64_to_ns(&ts);
/* f/w doesn't support period less than cycle time */
if (ns_period < IEP_DEFAULT_CYCLE_TIME_NS)
return -ENXIO;
reduction_factor = ns_period / IEP_DEFAULT_CYCLE_TIME_NS;
offset = ns_period % IEP_DEFAULT_CYCLE_TIME_NS;
/* f/w requires at least 1uS within a cycle so CMP
* can trigger after SYNC is enabled
*/
if (offset < 5 * NSEC_PER_USEC)
offset = 5 * NSEC_PER_USEC;
/* if offset is close to cycle time then we will miss
* the CMP event for last tick when IEP rolls over.
* In normal mode, IEP tick is 4ns.
* In slow compensation it could be 0ns or 8ns at
* every slow compensation cycle.
*/
if (offset > IEP_DEFAULT_CYCLE_TIME_NS - 8)
offset = IEP_DEFAULT_CYCLE_TIME_NS - 8;
/* we're in shadow mode so need to set upper 32-bits */
*cmp = (u64)offset << 32;
writel(reduction_factor, emac->prueth->shram.va +
TIMESYNC_FW_WC_SYNCOUT_REDUCTION_FACTOR_OFFSET);
writel(0, emac->prueth->shram.va +
TIMESYNC_FW_WC_SYNCOUT_START_TIME_CYCLECOUNT_OFFSET);
return 0;
}
const struct icss_iep_clockops prueth_iep_clockops = {
.settime = prueth_iep_settime,
.gettime = prueth_iep_gettime,
.perout_enable = prueth_perout_enable,
};
/**
* emac_ndo_open - EMAC device open
* @ndev: network adapter device
@ -1066,10 +1368,20 @@ static int emac_ndo_open(struct net_device *ndev)
icssg_mii_update_mtu(prueth->mii_rt, slice, ndev->max_mtu);
if (!prueth->emacs_initialized) {
ret = icss_iep_init(emac->iep, &prueth_iep_clockops,
emac, IEP_DEFAULT_CYCLE_TIME_NS);
}
ret = request_threaded_irq(emac->tx_ts_irq, NULL, prueth_tx_ts_irq,
IRQF_ONESHOT, dev_name(dev), emac);
if (ret)
goto stop;
/* Prepare RX */
ret = prueth_prepare_rx_chan(emac, &emac->rx_chns, PRUETH_MAX_PKT_SIZE);
if (ret)
goto stop;
goto free_tx_ts_irq;
ret = k3_udma_glue_enable_rx_chn(emac->rx_chns.rx_chn);
if (ret)
@ -1102,6 +1414,8 @@ reset_tx_chan:
prueth_reset_tx_chan(emac, i, false);
reset_rx_chn:
prueth_reset_rx_chan(&emac->rx_chns, max_rx_flows, false);
free_tx_ts_irq:
free_irq(emac->tx_ts_irq, emac);
stop:
prueth_emac_stop(emac);
free_rx_irq:
@ -1173,6 +1487,14 @@ static int emac_ndo_stop(struct net_device *ndev)
/* stop PRUs */
prueth_emac_stop(emac);
if (prueth->emacs_initialized == 1)
icss_iep_exit(emac->iep);
/* stop PRUs */
prueth_emac_stop(emac);
free_irq(emac->tx_ts_irq, emac);
free_irq(emac->rx_chns.irq[rx_flow], emac);
prueth_ndev_del_tx_napi(emac, emac->tx_ch_num);
prueth_cleanup_tx_chns(emac);
@ -1235,8 +1557,79 @@ static void emac_ndo_set_rx_mode(struct net_device *ndev)
queue_work(emac->cmd_wq, &emac->rx_mode_work);
}
static int emac_set_ts_config(struct net_device *ndev, struct ifreq *ifr)
{
struct prueth_emac *emac = netdev_priv(ndev);
struct hwtstamp_config config;
if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
return -EFAULT;
switch (config.tx_type) {
case HWTSTAMP_TX_OFF:
emac->tx_ts_enabled = 0;
break;
case HWTSTAMP_TX_ON:
emac->tx_ts_enabled = 1;
break;
default:
return -ERANGE;
}
switch (config.rx_filter) {
case HWTSTAMP_FILTER_NONE:
emac->rx_ts_enabled = 0;
break;
case HWTSTAMP_FILTER_ALL:
case HWTSTAMP_FILTER_SOME:
case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
case HWTSTAMP_FILTER_PTP_V2_EVENT:
case HWTSTAMP_FILTER_PTP_V2_SYNC:
case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
case HWTSTAMP_FILTER_NTP_ALL:
emac->rx_ts_enabled = 1;
config.rx_filter = HWTSTAMP_FILTER_ALL;
break;
default:
return -ERANGE;
}
return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ?
-EFAULT : 0;
}
static int emac_get_ts_config(struct net_device *ndev, struct ifreq *ifr)
{
struct prueth_emac *emac = netdev_priv(ndev);
struct hwtstamp_config config;
config.flags = 0;
config.tx_type = emac->tx_ts_enabled ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF;
config.rx_filter = emac->rx_ts_enabled ? HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE;
return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ?
-EFAULT : 0;
}
static int emac_ndo_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd)
{
switch (cmd) {
case SIOCGHWTSTAMP:
return emac_get_ts_config(ndev, ifr);
case SIOCSHWTSTAMP:
return emac_set_ts_config(ndev, ifr);
default:
break;
}
return phy_do_ioctl(ndev, ifr, cmd);
}
@ -1316,6 +1709,7 @@ static int prueth_netdev_init(struct prueth *prueth,
struct prueth_emac *emac;
struct net_device *ndev;
enum prueth_port port;
const char *irq_name;
enum prueth_mac mac;
port = prueth_node_port(eth_node);
@ -1355,6 +1749,15 @@ static int prueth_netdev_init(struct prueth *prueth,
emac->tx_ch_num = 1;
irq_name = "tx_ts0";
if (emac->port_id == PRUETH_PORT_MII1)
irq_name = "tx_ts1";
emac->tx_ts_irq = platform_get_irq_byname_optional(prueth->pdev, irq_name);
if (emac->tx_ts_irq < 0) {
ret = dev_err_probe(prueth->dev, emac->tx_ts_irq, "could not get tx_ts_irq\n");
goto free;
}
SET_NETDEV_DEV(ndev, prueth->dev);
spin_lock_init(&emac->lock);
mutex_init(&emac->cmd_lock);
@ -1680,6 +2083,13 @@ static int prueth_probe(struct platform_device *pdev)
dev_dbg(dev, "sram: pa %llx va %p size %zx\n", prueth->msmcram.pa,
prueth->msmcram.va, prueth->msmcram.size);
prueth->iep0 = icss_iep_get_idx(np, 0);
if (IS_ERR(prueth->iep0)) {
ret = dev_err_probe(dev, PTR_ERR(prueth->iep0), "iep0 get failed\n");
prueth->iep0 = NULL;
goto free_pool;
}
/* setup netdev interfaces */
if (eth0_node) {
ret = prueth_netdev_init(prueth, eth0_node);
@ -1688,6 +2098,7 @@ static int prueth_probe(struct platform_device *pdev)
eth0_node->name);
goto netdev_exit;
}
prueth->emac[PRUETH_MAC0]->iep = prueth->iep0;
}
if (eth1_node) {
@ -1697,6 +2108,8 @@ static int prueth_probe(struct platform_device *pdev)
eth1_node->name);
goto netdev_exit;
}
prueth->emac[PRUETH_MAC1]->iep = prueth->iep0;
}
/* register the network devices */
@ -1754,6 +2167,7 @@ netdev_exit:
prueth_netdev_exit(prueth, eth_node);
}
free_pool:
gen_pool_free(prueth->sram_pool,
(unsigned long)prueth->msmcram.va, msmc_ram_size);
@ -1798,6 +2212,8 @@ static void prueth_remove(struct platform_device *pdev)
prueth_netdev_exit(prueth, eth_node);
}
icss_iep_put(prueth->iep0);
gen_pool_free(prueth->sram_pool,
(unsigned long)prueth->msmcram.va,
MSMC_RAM_SIZE);

26
drivers/net/ethernet/ti/icssg/icssg_prueth.h
View File

@ -35,6 +35,7 @@
#include <net/devlink.h>
#include "icssg_config.h"
#include "icss_iep.h"
#include "icssg_switch_map.h"
#define PRUETH_MAX_MTU (2000 - ETH_HLEN - ETH_FCS_LEN)
@ -122,6 +123,8 @@ struct prueth_rx_chn {
*/
#define PRUETH_MAX_TX_QUEUES 4
#define PRUETH_MAX_TX_TS_REQUESTS 50 /* Max simultaneous TX_TS requests */
/* data for each emac port */
struct prueth_emac {
bool fw_running;
@ -139,6 +142,9 @@ struct prueth_emac {
struct device_node *phy_node;
phy_interface_t phy_if;
enum prueth_port port_id;
struct icss_iep *iep;
unsigned int rx_ts_enabled : 1;
unsigned int tx_ts_enabled : 1;
/* DMA related */
struct prueth_tx_chn tx_chns[PRUETH_MAX_TX_QUEUES];
@ -150,7 +156,15 @@ struct prueth_emac {
spinlock_t lock; /* serialize access */
unsigned long state;
/* TX HW Timestamping */
/* TX TS cookie will be index to the tx_ts_skb array */
struct sk_buff *tx_ts_skb[PRUETH_MAX_TX_TS_REQUESTS];
atomic_t tx_ts_pending;
int tx_ts_irq;
u8 cmd_seq;
/* shutdown related */
u32 cmd_data[4];
struct completion cmd_complete;
/* Mutex to serialize access to firmware command interface */
struct mutex cmd_lock;
@ -193,6 +207,7 @@ struct prueth_pdata {
* @pdata: pointer to platform data for ICSSG driver
* @icssg_hwcmdseq: seq counter or HWQ messages
* @emacs_initialized: num of EMACs/ext ports that are up/running
* @iep0: pointer to IEP0 device
*/
struct prueth {
struct device *dev;
@ -214,8 +229,15 @@ struct prueth {
struct platform_device *pdev;
struct prueth_pdata pdata;
u8 icssg_hwcmdseq;
int emacs_initialized;
struct icss_iep *iep0;
};
struct emac_tx_ts_response {
u32 reserved[2];
u32 cookie;
u32 lo_ts;
u32 hi_ts;
};
/* get PRUSS SLICE number from prueth_emac */