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caif-hsi: Remove use of module parameters 

Remove use of module parameters on caif hsi device, as
rtnl configuration parameters are already supported.

All caif hsi configuration data is put in cfhsi_config,
and default values in hsi_default_config.

Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sjur Brændeland 2012-06-25 07:49:43 +00:00 committed by David S. Miller
parent 1c385f1fdf
commit 91fa0cbc0c
2 changed files with 82 additions and 83 deletions
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151
drivers/net/caif/caif_hsi.c
View File

@ -32,51 +32,39 @@ MODULE_DESCRIPTION("CAIF HSI driver");
#define PAD_POW2(x, pow) ((((x)&((pow)-1)) == 0) ? 0 :\ #define PAD_POW2(x, pow) ((((x)&((pow)-1)) == 0) ? 0 :\
(((pow)-((x)&((pow)-1))))) (((pow)-((x)&((pow)-1)))))
static int inactivity_timeout = 1000; static const struct cfhsi_config hsi_default_config = {
module_param(inactivity_timeout, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(inactivity_timeout, "Inactivity timeout on HSI, ms.");
static int aggregation_timeout = 1; /* Inactivity timeout on HSI, ms */
module_param(aggregation_timeout, int, S_IRUGO | S_IWUSR); .inactivity_timeout = HZ,
MODULE_PARM_DESC(aggregation_timeout, "Aggregation timeout on HSI, ms.");
/* /* Aggregation timeout (ms) of zero means no aggregation is done*/
* HSI padding options. .aggregation_timeout = 1,
* Warning: must be a base of 2 (& operation used) and can not be zero !
*/
static int hsi_head_align = 4;
module_param(hsi_head_align, int, S_IRUGO);
MODULE_PARM_DESC(hsi_head_align, "HSI head alignment.");
static int hsi_tail_align = 4; /*
module_param(hsi_tail_align, int, S_IRUGO); * HSI link layer flow-control thresholds.
MODULE_PARM_DESC(hsi_tail_align, "HSI tail alignment."); * Threshold values for the HSI packet queue. Flow-control will be
* asserted when the number of packets exceeds q_high_mark. It will
* not be de-asserted before the number of packets drops below
* q_low_mark.
* Warning: A high threshold value might increase throughput but it
* will at the same time prevent channel prioritization and increase
* the risk of flooding the modem. The high threshold should be above
* the low.
*/
.q_high_mark = 100,
.q_low_mark = 50,
/* /*
* HSI link layer flowcontrol thresholds. * HSI padding options.
* Warning: A high threshold value migth increase throughput but it will at * Warning: must be a base of 2 (& operation used) and can not be zero !
* the same time prevent channel prioritization and increase the risk of */
* flooding the modem. The high threshold should be above the low. .head_align = 4,
*/ .tail_align = 4,
static int hsi_high_threshold = 100; };
module_param(hsi_high_threshold, int, S_IRUGO);
MODULE_PARM_DESC(hsi_high_threshold, "HSI high threshold (FLOW OFF).");
static int hsi_low_threshold = 50;
module_param(hsi_low_threshold, int, S_IRUGO);
MODULE_PARM_DESC(hsi_low_threshold, "HSI high threshold (FLOW ON).");
#define ON 1 #define ON 1
#define OFF 0 #define OFF 0
/*
* Threshold values for the HSI packet queue. Flowcontrol will be asserted
* when the number of packets exceeds HIGH_WATER_MARK. It will not be
* de-asserted before the number of packets drops below LOW_WATER_MARK.
*/
#define LOW_WATER_MARK hsi_low_threshold
#define HIGH_WATER_MARK hsi_high_threshold
static LIST_HEAD(cfhsi_list); static LIST_HEAD(cfhsi_list);
static void cfhsi_inactivity_tout(unsigned long arg) static void cfhsi_inactivity_tout(unsigned long arg)
@ -99,8 +87,8 @@ static void cfhsi_update_aggregation_stats(struct cfhsi *cfhsi,
int hpad, tpad, len; int hpad, tpad, len;
info = (struct caif_payload_info *)&skb->cb; info = (struct caif_payload_info *)&skb->cb;
hpad = 1 + PAD_POW2((info->hdr_len + 1), hsi_head_align); hpad = 1 + PAD_POW2((info->hdr_len + 1), cfhsi->cfg.head_align);
tpad = PAD_POW2((skb->len + hpad), hsi_tail_align); tpad = PAD_POW2((skb->len + hpad), cfhsi->cfg.tail_align);
len = skb->len + hpad + tpad; len = skb->len + hpad + tpad;
if (direction > 0) if (direction > 0)
@ -113,7 +101,7 @@ static bool cfhsi_can_send_aggregate(struct cfhsi *cfhsi)
{ {
int i; int i;
if (cfhsi->aggregation_timeout == 0) if (cfhsi->cfg.aggregation_timeout == 0)
return true; return true;
for (i = 0; i < CFHSI_PRIO_BEBK; ++i) { for (i = 0; i < CFHSI_PRIO_BEBK; ++i) {
@ -169,7 +157,7 @@ static void cfhsi_abort_tx(struct cfhsi *cfhsi)
cfhsi->tx_state = CFHSI_TX_STATE_IDLE; cfhsi->tx_state = CFHSI_TX_STATE_IDLE;
if (!test_bit(CFHSI_SHUTDOWN, &cfhsi->bits)) if (!test_bit(CFHSI_SHUTDOWN, &cfhsi->bits))
mod_timer(&cfhsi->inactivity_timer, mod_timer(&cfhsi->inactivity_timer,
jiffies + cfhsi->inactivity_timeout); jiffies + cfhsi->cfg.inactivity_timeout);
spin_unlock_bh(&cfhsi->lock); spin_unlock_bh(&cfhsi->lock);
} }
@ -250,8 +238,8 @@ static int cfhsi_tx_frm(struct cfhsi_desc *desc, struct cfhsi *cfhsi)
/* Calculate needed head alignment and tail alignment. */ /* Calculate needed head alignment and tail alignment. */
info = (struct caif_payload_info *)&skb->cb; info = (struct caif_payload_info *)&skb->cb;
hpad = 1 + PAD_POW2((info->hdr_len + 1), hsi_head_align); hpad = 1 + PAD_POW2((info->hdr_len + 1), cfhsi->cfg.head_align);
tpad = PAD_POW2((skb->len + hpad), hsi_tail_align); tpad = PAD_POW2((skb->len + hpad), cfhsi->cfg.tail_align);
/* Check if frame still fits with added alignment. */ /* Check if frame still fits with added alignment. */
if ((skb->len + hpad + tpad) <= CFHSI_MAX_EMB_FRM_SZ) { if ((skb->len + hpad + tpad) <= CFHSI_MAX_EMB_FRM_SZ) {
@ -292,8 +280,8 @@ static int cfhsi_tx_frm(struct cfhsi_desc *desc, struct cfhsi *cfhsi)
/* Calculate needed head alignment and tail alignment. */ /* Calculate needed head alignment and tail alignment. */
info = (struct caif_payload_info *)&skb->cb; info = (struct caif_payload_info *)&skb->cb;
hpad = 1 + PAD_POW2((info->hdr_len + 1), hsi_head_align); hpad = 1 + PAD_POW2((info->hdr_len + 1), cfhsi->cfg.head_align);
tpad = PAD_POW2((skb->len + hpad), hsi_tail_align); tpad = PAD_POW2((skb->len + hpad), cfhsi->cfg.tail_align);
/* Fill in CAIF frame length in descriptor. */ /* Fill in CAIF frame length in descriptor. */
desc->cffrm_len[nfrms] = hpad + skb->len + tpad; desc->cffrm_len[nfrms] = hpad + skb->len + tpad;
@ -364,7 +352,7 @@ static void cfhsi_start_tx(struct cfhsi *cfhsi)
cfhsi->tx_state = CFHSI_TX_STATE_IDLE; cfhsi->tx_state = CFHSI_TX_STATE_IDLE;
/* Start inactivity timer. */ /* Start inactivity timer. */
mod_timer(&cfhsi->inactivity_timer, mod_timer(&cfhsi->inactivity_timer,
jiffies + cfhsi->inactivity_timeout); jiffies + cfhsi->cfg.inactivity_timeout);
spin_unlock_bh(&cfhsi->lock); spin_unlock_bh(&cfhsi->lock);
break; break;
} }
@ -390,7 +378,7 @@ static void cfhsi_tx_done(struct cfhsi *cfhsi)
*/ */
spin_lock_bh(&cfhsi->lock); spin_lock_bh(&cfhsi->lock);
if (cfhsi->flow_off_sent && if (cfhsi->flow_off_sent &&
cfhsi_tx_queue_len(cfhsi) <= cfhsi->q_low_mark && cfhsi_tx_queue_len(cfhsi) <= cfhsi->cfg.q_low_mark &&
cfhsi->cfdev.flowctrl) { cfhsi->cfdev.flowctrl) {
cfhsi->flow_off_sent = 0; cfhsi->flow_off_sent = 0;
@ -402,7 +390,7 @@ static void cfhsi_tx_done(struct cfhsi *cfhsi)
cfhsi_start_tx(cfhsi); cfhsi_start_tx(cfhsi);
} else { } else {
mod_timer(&cfhsi->aggregation_timer, mod_timer(&cfhsi->aggregation_timer,
jiffies + cfhsi->aggregation_timeout); jiffies + cfhsi->cfg.aggregation_timeout);
spin_unlock_bh(&cfhsi->lock); spin_unlock_bh(&cfhsi->lock);
} }
@ -645,7 +633,7 @@ static void cfhsi_rx_done(struct cfhsi *cfhsi)
/* Update inactivity timer if pending. */ /* Update inactivity timer if pending. */
spin_lock_bh(&cfhsi->lock); spin_lock_bh(&cfhsi->lock);
mod_timer_pending(&cfhsi->inactivity_timer, mod_timer_pending(&cfhsi->inactivity_timer,
jiffies + cfhsi->inactivity_timeout); jiffies + cfhsi->cfg.inactivity_timeout);
spin_unlock_bh(&cfhsi->lock); spin_unlock_bh(&cfhsi->lock);
if (cfhsi->rx_state.state == CFHSI_RX_STATE_DESC) { if (cfhsi->rx_state.state == CFHSI_RX_STATE_DESC) {
@ -880,7 +868,7 @@ wake_ack:
__func__); __func__);
/* Start inactivity timer. */ /* Start inactivity timer. */
mod_timer(&cfhsi->inactivity_timer, mod_timer(&cfhsi->inactivity_timer,
jiffies + cfhsi->inactivity_timeout); jiffies + cfhsi->cfg.inactivity_timeout);
spin_unlock_bh(&cfhsi->lock); spin_unlock_bh(&cfhsi->lock);
return; return;
} }
@ -1071,7 +1059,7 @@ static int cfhsi_xmit(struct sk_buff *skb, struct net_device *dev)
/* Send flow off if number of packets is above high water mark. */ /* Send flow off if number of packets is above high water mark. */
if (!cfhsi->flow_off_sent && if (!cfhsi->flow_off_sent &&
cfhsi_tx_queue_len(cfhsi) > cfhsi->q_high_mark && cfhsi_tx_queue_len(cfhsi) > cfhsi->cfg.q_high_mark &&
cfhsi->cfdev.flowctrl) { cfhsi->cfdev.flowctrl) {
cfhsi->flow_off_sent = 1; cfhsi->flow_off_sent = 1;
cfhsi->cfdev.flowctrl(cfhsi->ndev, OFF); cfhsi->cfdev.flowctrl(cfhsi->ndev, OFF);
@ -1143,6 +1131,7 @@ static void cfhsi_setup(struct net_device *dev)
cfhsi->cfdev.use_stx = false; cfhsi->cfdev.use_stx = false;
cfhsi->cfdev.use_fcs = false; cfhsi->cfdev.use_fcs = false;
cfhsi->ndev = dev; cfhsi->ndev = dev;
cfhsi->cfg = hsi_default_config;
} }
static int cfhsi_open(struct net_device *ndev) static int cfhsi_open(struct net_device *ndev)
@ -1158,9 +1147,6 @@ static int cfhsi_open(struct net_device *ndev)
/* Set flow info */ /* Set flow info */
cfhsi->flow_off_sent = 0; cfhsi->flow_off_sent = 0;
cfhsi->q_low_mark = LOW_WATER_MARK;
cfhsi->q_high_mark = HIGH_WATER_MARK;
/* /*
* Allocate a TX buffer with the size of a HSI packet descriptors * Allocate a TX buffer with the size of a HSI packet descriptors
@ -1188,20 +1174,8 @@ static int cfhsi_open(struct net_device *ndev)
goto err_alloc_rx_flip; goto err_alloc_rx_flip;
} }
/* Pre-calculate inactivity timeout. */
if (inactivity_timeout != -1) {
cfhsi->inactivity_timeout =
inactivity_timeout * HZ / 1000;
if (!cfhsi->inactivity_timeout)
cfhsi->inactivity_timeout = 1;
else if (cfhsi->inactivity_timeout > NEXT_TIMER_MAX_DELTA)
cfhsi->inactivity_timeout = NEXT_TIMER_MAX_DELTA;
} else {
cfhsi->inactivity_timeout = NEXT_TIMER_MAX_DELTA;
}
/* Initialize aggregation timeout */ /* Initialize aggregation timeout */
cfhsi->aggregation_timeout = aggregation_timeout; cfhsi->cfg.aggregation_timeout = hsi_default_config.aggregation_timeout;
/* Initialize recieve vaiables. */ /* Initialize recieve vaiables. */
cfhsi->rx_ptr = cfhsi->rx_buf; cfhsi->rx_ptr = cfhsi->rx_buf;
@ -1350,24 +1324,39 @@ static void cfhsi_netlink_parms(struct nlattr *data[], struct cfhsi *cfhsi)
} }
i = __IFLA_CAIF_HSI_INACTIVITY_TOUT; i = __IFLA_CAIF_HSI_INACTIVITY_TOUT;
if (data[i]) /*
inactivity_timeout = nla_get_u32(data[i]); * Inactivity timeout in millisecs. Lowest possible value is 1,
* and highest possible is NEXT_TIMER_MAX_DELTA.
*/
if (data[i]) {
u32 inactivity_timeout = nla_get_u32(data[i]);
/* Pre-calculate inactivity timeout. */
cfhsi->cfg.inactivity_timeout = inactivity_timeout * HZ / 1000;
if (cfhsi->cfg.inactivity_timeout == 0)
cfhsi->cfg.inactivity_timeout = 1;
else if (cfhsi->cfg.inactivity_timeout > NEXT_TIMER_MAX_DELTA)
cfhsi->cfg.inactivity_timeout = NEXT_TIMER_MAX_DELTA;
}
i = __IFLA_CAIF_HSI_AGGREGATION_TOUT; i = __IFLA_CAIF_HSI_AGGREGATION_TOUT;
if (data[i]) if (data[i])
aggregation_timeout = nla_get_u32(data[i]); cfhsi->cfg.aggregation_timeout = nla_get_u32(data[i]);
i = __IFLA_CAIF_HSI_HEAD_ALIGN; i = __IFLA_CAIF_HSI_HEAD_ALIGN;
if (data[i]) if (data[i])
hsi_head_align = nla_get_u32(data[i]); cfhsi->cfg.head_align = nla_get_u32(data[i]);
i = __IFLA_CAIF_HSI_TAIL_ALIGN; i = __IFLA_CAIF_HSI_TAIL_ALIGN;
if (data[i]) if (data[i])
hsi_tail_align = nla_get_u32(data[i]); cfhsi->cfg.tail_align = nla_get_u32(data[i]);
i = __IFLA_CAIF_HSI_QHIGH_WATERMARK; i = __IFLA_CAIF_HSI_QHIGH_WATERMARK;
if (data[i]) if (data[i])
hsi_high_threshold = nla_get_u32(data[i]); cfhsi->cfg.q_high_mark = nla_get_u32(data[i]);
i = __IFLA_CAIF_HSI_QLOW_WATERMARK;
if (data[i])
cfhsi->cfg.q_low_mark = nla_get_u32(data[i]);
} }
static int caif_hsi_changelink(struct net_device *dev, struct nlattr *tb[], static int caif_hsi_changelink(struct net_device *dev, struct nlattr *tb[],
@ -1398,16 +1387,20 @@ static size_t caif_hsi_get_size(const struct net_device *dev)
static int caif_hsi_fill_info(struct sk_buff *skb, const struct net_device *dev) static int caif_hsi_fill_info(struct sk_buff *skb, const struct net_device *dev)
{ {
struct cfhsi *cfhsi = netdev_priv(dev);
if (nla_put_u32(skb, __IFLA_CAIF_HSI_INACTIVITY_TOUT, if (nla_put_u32(skb, __IFLA_CAIF_HSI_INACTIVITY_TOUT,
inactivity_timeout) || cfhsi->cfg.inactivity_timeout) ||
nla_put_u32(skb, __IFLA_CAIF_HSI_AGGREGATION_TOUT, nla_put_u32(skb, __IFLA_CAIF_HSI_AGGREGATION_TOUT,
aggregation_timeout) || cfhsi->cfg.aggregation_timeout) ||
nla_put_u32(skb, __IFLA_CAIF_HSI_HEAD_ALIGN, hsi_head_align) || nla_put_u32(skb, __IFLA_CAIF_HSI_HEAD_ALIGN,
nla_put_u32(skb, __IFLA_CAIF_HSI_TAIL_ALIGN, hsi_tail_align) || cfhsi->cfg.head_align) ||
nla_put_u32(skb, __IFLA_CAIF_HSI_TAIL_ALIGN,
cfhsi->cfg.tail_align) ||
nla_put_u32(skb, __IFLA_CAIF_HSI_QHIGH_WATERMARK, nla_put_u32(skb, __IFLA_CAIF_HSI_QHIGH_WATERMARK,
hsi_high_threshold) || cfhsi->cfg.q_high_mark) ||
nla_put_u32(skb, __IFLA_CAIF_HSI_QLOW_WATERMARK, nla_put_u32(skb, __IFLA_CAIF_HSI_QLOW_WATERMARK,
hsi_low_threshold)) cfhsi->cfg.q_low_mark))
return -EMSGSIZE; return -EMSGSIZE;
return 0; return 0;

14
include/net/caif/caif_hsi.h
View File

@ -132,6 +132,15 @@ enum {
CFHSI_PRIO_LAST, CFHSI_PRIO_LAST,
}; };
struct cfhsi_config {
u32 inactivity_timeout;
u32 aggregation_timeout;
u32 head_align;
u32 tail_align;
u32 q_high_mark;
u32 q_low_mark;
};
/* Structure implemented by CAIF HSI drivers. */ /* Structure implemented by CAIF HSI drivers. */
struct cfhsi { struct cfhsi {
struct caif_dev_common cfdev; struct caif_dev_common cfdev;
@ -142,7 +151,7 @@ struct cfhsi {
struct cfhsi_ops *ops; struct cfhsi_ops *ops;
int tx_state; int tx_state;
struct cfhsi_rx_state rx_state; struct cfhsi_rx_state rx_state;
unsigned long inactivity_timeout; struct cfhsi_config cfg;
int rx_len; int rx_len;
u8 *rx_ptr; u8 *rx_ptr;
u8 *tx_buf; u8 *tx_buf;
@ -150,8 +159,6 @@ struct cfhsi {
u8 *rx_flip_buf; u8 *rx_flip_buf;
spinlock_t lock; spinlock_t lock;
int flow_off_sent; int flow_off_sent;
u32 q_low_mark;
u32 q_high_mark;
struct list_head list; struct list_head list;
struct work_struct wake_up_work; struct work_struct wake_up_work;
struct work_struct wake_down_work; struct work_struct wake_down_work;
@ -164,7 +171,6 @@ struct cfhsi {
struct timer_list rx_slowpath_timer; struct timer_list rx_slowpath_timer;
/* TX aggregation */ /* TX aggregation */
unsigned long aggregation_timeout;
int aggregation_len; int aggregation_len;
struct timer_list aggregation_timer; struct timer_list aggregation_timer;