Merge branch 'linus/master' into rdma.git for-next

rdma.git merge resolution for the 4.19 merge window

Conflicts:
 drivers/infiniband/core/rdma_core.c
   - Use the rdma code and revise with the new spelling for
     atomic_fetch_add_unless
 drivers/nvme/host/rdma.c
   - Replace max_sge with max_send_sge in new blk code
 drivers/nvme/target/rdma.c
   - Use the blk code and revise to use NULL for ib_post_recv when
     appropriate
   - Replace max_sge with max_recv_sge in new blk code
 net/rds/ib_send.c
   - Use the net code and revise to use NULL for ib_post_recv when
     appropriate

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

1 files changed, 18 insertions, 391 deletions

diff --git a/drivers/media/pci/ddbridge/ddbridge-mci.c b/drivers/media/pci/ddbridge/ddbridge-mci.c
index 4ac634fc96e4..97384ae9ad27 100644
--- a/drivers/media/pci/ddbridge/ddbridge-mci.c
+++ b/drivers/media/pci/ddbridge/ddbridge-mci.c
@@ -2,9 +2,9 @@
 /*
  * ddbridge-mci.c: Digital Devices microcode interface
  *
- * Copyright (C) 2017 Digital Devices GmbH
- *                    Ralph Metzler <rjkm@metzlerbros.de>
- *                    Marcus Metzler <mocm@metzlerbros.de>
+ * Copyright (C) 2017-2018 Digital Devices GmbH
+ *                         Ralph Metzler <rjkm@metzlerbros.de>
+ *                         Marcus Metzler <mocm@metzlerbros.de>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -22,42 +22,6 @@
 
 static LIST_HEAD(mci_list);
 
-static const u32 MCLK = (1550000000 / 12);
-static const u32 MAX_DEMOD_LDPC_BITRATE = (1550000000 / 6);
-static const u32 MAX_LDPC_BITRATE = (720000000);
-
-struct mci_base {
-	struct list_head     mci_list;
-	void                *key;
-	struct ddb_link     *link;
-	struct completion    completion;
-
-	struct device       *dev;
-	struct mutex         tuner_lock; /* concurrent tuner access lock */
-	u8                   adr;
-	struct mutex         mci_lock; /* concurrent MCI access lock */
-	int                  count;
-
-	u8                   tuner_use_count[MCI_TUNER_MAX];
-	u8                   assigned_demod[MCI_DEMOD_MAX];
-	u32                  used_ldpc_bitrate[MCI_DEMOD_MAX];
-	u8                   demod_in_use[MCI_DEMOD_MAX];
-	u32                  iq_mode;
-};
-
-struct mci {
-	struct mci_base     *base;
-	struct dvb_frontend  fe;
-	int                  nr;
-	int                  demod;
-	int                  tuner;
-	int                  first_time_lock;
-	int                  started;
-	struct mci_result    signal_info;
-
-	u32                  bb_mode;
-};
-
 static int mci_reset(struct mci *state)
 {
 	struct ddb_link *link = state->base->link;
@@ -84,7 +48,7 @@ static int mci_reset(struct mci *state)
 	return 0;
 }
 
-static int mci_config(struct mci *state, u32 config)
+int ddb_mci_config(struct mci *state, u32 config)
 {
 	struct ddb_link *link = state->base->link;
 
@@ -122,16 +86,16 @@ static int _mci_cmd_unlocked(struct mci *state,
 	return 0;
 }
 
-static int mci_cmd(struct mci *state,
-		   struct mci_command *command,
-		   struct mci_result *result)
+int ddb_mci_cmd(struct mci *state,
+		struct mci_command *command,
+		struct mci_result *result)
 {
 	int stat;
 
 	mutex_lock(&state->base->mci_lock);
 	stat = _mci_cmd_unlocked(state,
 				 (u32 *)command, sizeof(*command) / sizeof(u32),
-				 (u32 *)result, sizeof(*result) / sizeof(u32));
+				 (u32 *)result,	sizeof(*result) / sizeof(u32));
 	mutex_unlock(&state->base->mci_lock);
 	return stat;
 }
@@ -143,344 +107,6 @@ static void mci_handler(void *priv)
 	complete(&base->completion);
 }
 
-static void release(struct dvb_frontend *fe)
-{
-	struct mci *state = fe->demodulator_priv;
-
-	state->base->count--;
-	if (state->base->count == 0) {
-		list_del(&state->base->mci_list);
-		kfree(state->base);
-	}
-	kfree(state);
-}
-
-static int read_status(struct dvb_frontend *fe, enum fe_status *status)
-{
-	int stat;
-	struct mci *state = fe->demodulator_priv;
-	struct mci_command cmd;
-	struct mci_result res;
-
-	cmd.command = MCI_CMD_GETSTATUS;
-	cmd.demod = state->demod;
-	stat = mci_cmd(state, &cmd, &res);
-	if (stat)
-		return stat;
-	*status = 0x00;
-	if (res.status == SX8_DEMOD_WAIT_MATYPE)
-		*status = 0x0f;
-	if (res.status == SX8_DEMOD_LOCKED)
-		*status = 0x1f;
-	return stat;
-}
-
-static int mci_set_tuner(struct dvb_frontend *fe, u32 tuner, u32 on)
-{
-	struct mci *state = fe->demodulator_priv;
-	struct mci_command cmd;
-
-	memset(&cmd, 0, sizeof(cmd));
-	cmd.tuner = state->tuner;
-	cmd.command = on ? SX8_CMD_INPUT_ENABLE : SX8_CMD_INPUT_DISABLE;
-	return mci_cmd(state, &cmd, NULL);
-}
-
-static int stop(struct dvb_frontend *fe)
-{
-	struct mci *state = fe->demodulator_priv;
-	struct mci_command cmd;
-	u32 input = state->tuner;
-
-	memset(&cmd, 0, sizeof(cmd));
-	if (state->demod != DEMOD_UNUSED) {
-		cmd.command = MCI_CMD_STOP;
-		cmd.demod = state->demod;
-		mci_cmd(state, &cmd, NULL);
-		if (state->base->iq_mode) {
-			cmd.command = MCI_CMD_STOP;
-			cmd.demod = state->demod;
-			cmd.output = 0;
-			mci_cmd(state, &cmd, NULL);
-			mci_config(state, SX8_TSCONFIG_MODE_NORMAL);
-		}
-	}
-	mutex_lock(&state->base->tuner_lock);
-	state->base->tuner_use_count[input]--;
-	if (!state->base->tuner_use_count[input])
-		mci_set_tuner(fe, input, 0);
-	if (state->demod < MCI_DEMOD_MAX)
-		state->base->demod_in_use[state->demod] = 0;
-	state->base->used_ldpc_bitrate[state->nr] = 0;
-	state->demod = DEMOD_UNUSED;
-	state->base->assigned_demod[state->nr] = DEMOD_UNUSED;
-	state->base->iq_mode = 0;
-	mutex_unlock(&state->base->tuner_lock);
-	state->started = 0;
-	return 0;
-}
-
-static int start(struct dvb_frontend *fe, u32 flags, u32 modmask, u32 ts_config)
-{
-	struct mci *state = fe->demodulator_priv;
-	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
-	u32 used_ldpc_bitrate = 0, free_ldpc_bitrate;
-	u32 used_demods = 0;
-	struct mci_command cmd;
-	u32 input = state->tuner;
-	u32 bits_per_symbol = 0;
-	int i, stat = 0;
-
-	if (p->symbol_rate >= (MCLK / 2))
-		flags &= ~1;
-	if ((flags & 3) == 0)
-		return -EINVAL;
-
-	if (flags & 2) {
-		u32 tmp = modmask;
-
-		bits_per_symbol = 1;
-		while (tmp & 1) {
-			tmp >>= 1;
-			bits_per_symbol++;
-		}
-	}
-
-	mutex_lock(&state->base->tuner_lock);
-	if (state->base->iq_mode) {
-		stat = -EBUSY;
-		goto unlock;
-	}
-	for (i = 0; i < MCI_DEMOD_MAX; i++) {
-		used_ldpc_bitrate += state->base->used_ldpc_bitrate[i];
-		if (state->base->demod_in_use[i])
-			used_demods++;
-	}
-	if (used_ldpc_bitrate >= MAX_LDPC_BITRATE ||
-	    ((ts_config & SX8_TSCONFIG_MODE_MASK) >
-	     SX8_TSCONFIG_MODE_NORMAL && used_demods > 0)) {
-		stat = -EBUSY;
-		goto unlock;
-	}
-	free_ldpc_bitrate = MAX_LDPC_BITRATE - used_ldpc_bitrate;
-	if (free_ldpc_bitrate > MAX_DEMOD_LDPC_BITRATE)
-		free_ldpc_bitrate = MAX_DEMOD_LDPC_BITRATE;
-
-	while (p->symbol_rate * bits_per_symbol > free_ldpc_bitrate)
-		bits_per_symbol--;
-
-	if (bits_per_symbol < 2) {
-		stat = -EBUSY;
-		goto unlock;
-	}
-	i = (p->symbol_rate > (MCLK / 2)) ? 3 : 7;
-	while (i >= 0 && state->base->demod_in_use[i])
-		i--;
-	if (i < 0) {
-		stat = -EBUSY;
-		goto unlock;
-	}
-	state->base->demod_in_use[i] = 1;
-	state->base->used_ldpc_bitrate[state->nr] = p->symbol_rate
-						    * bits_per_symbol;
-	state->demod = i;
-	state->base->assigned_demod[state->nr] = i;
-
-	if (!state->base->tuner_use_count[input])
-		mci_set_tuner(fe, input, 1);
-	state->base->tuner_use_count[input]++;
-	state->base->iq_mode = (ts_config > 1);
-unlock:
-	mutex_unlock(&state->base->tuner_lock);
-	if (stat)
-		return stat;
-	memset(&cmd, 0, sizeof(cmd));
-
-	if (state->base->iq_mode) {
-		cmd.command = SX8_CMD_SELECT_IQOUT;
-		cmd.demod = state->demod;
-		cmd.output = 0;
-		mci_cmd(state, &cmd, NULL);
-		mci_config(state, ts_config);
-	}
-	if (p->stream_id != NO_STREAM_ID_FILTER && p->stream_id != 0x80000000)
-		flags |= 0x80;
-	dev_dbg(state->base->dev, "MCI-%d: tuner=%d demod=%d\n",
-		state->nr, state->tuner, state->demod);
-	cmd.command = MCI_CMD_SEARCH_DVBS;
-	cmd.dvbs2_search.flags = flags;
-	cmd.dvbs2_search.s2_modulation_mask =
-		modmask & ((1 << (bits_per_symbol - 1)) - 1);
-	cmd.dvbs2_search.retry = 2;
-	cmd.dvbs2_search.frequency = p->frequency * 1000;
-	cmd.dvbs2_search.symbol_rate = p->symbol_rate;
-	cmd.dvbs2_search.scrambling_sequence_index =
-		p->scrambling_sequence_index;
-	cmd.dvbs2_search.input_stream_id =
-		(p->stream_id != NO_STREAM_ID_FILTER) ? p->stream_id : 0;
-	cmd.tuner = state->tuner;
-	cmd.demod = state->demod;
-	cmd.output = state->nr;
-	if (p->stream_id == 0x80000000)
-		cmd.output |= 0x80;
-	stat = mci_cmd(state, &cmd, NULL);
-	if (stat)
-		stop(fe);
-	return stat;
-}
-
-static int start_iq(struct dvb_frontend *fe, u32 ts_config)
-{
-	struct mci *state = fe->demodulator_priv;
-	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
-	u32 used_demods = 0;
-	struct mci_command cmd;
-	u32 input = state->tuner;
-	int i, stat = 0;
-
-	mutex_lock(&state->base->tuner_lock);
-	if (state->base->iq_mode) {
-		stat = -EBUSY;
-		goto unlock;
-	}
-	for (i = 0; i < MCI_DEMOD_MAX; i++)
-		if (state->base->demod_in_use[i])
-			used_demods++;
-	if (used_demods > 0) {
-		stat = -EBUSY;
-		goto unlock;
-	}
-	state->demod = 0;
-	state->base->assigned_demod[state->nr] = 0;
-	if (!state->base->tuner_use_count[input])
-		mci_set_tuner(fe, input, 1);
-	state->base->tuner_use_count[input]++;
-	state->base->iq_mode = (ts_config > 1);
-unlock:
-	mutex_unlock(&state->base->tuner_lock);
-	if (stat)
-		return stat;
-
-	memset(&cmd, 0, sizeof(cmd));
-	cmd.command = SX8_CMD_START_IQ;
-	cmd.dvbs2_search.frequency = p->frequency * 1000;
-	cmd.dvbs2_search.symbol_rate = p->symbol_rate;
-	cmd.tuner = state->tuner;
-	cmd.demod = state->demod;
-	cmd.output = 7;
-	mci_config(state, ts_config);
-	stat = mci_cmd(state, &cmd, NULL);
-	if (stat)
-		stop(fe);
-	return stat;
-}
-
-static int set_parameters(struct dvb_frontend *fe)
-{
-	int stat = 0;
-	struct mci *state = fe->demodulator_priv;
-	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
-	u32 ts_config, iq_mode = 0, isi;
-
-	if (state->started)
-		stop(fe);
-
-	isi = p->stream_id;
-	if (isi != NO_STREAM_ID_FILTER)
-		iq_mode = (isi & 0x30000000) >> 28;
-
-	switch (iq_mode) {
-	case 1:
-		ts_config = (SX8_TSCONFIG_TSHEADER | SX8_TSCONFIG_MODE_IQ);
-		break;
-	case 2:
-		ts_config = (SX8_TSCONFIG_TSHEADER | SX8_TSCONFIG_MODE_IQ);
-		break;
-	default:
-		ts_config = SX8_TSCONFIG_MODE_NORMAL;
-		break;
-	}
-
-	if (iq_mode != 2) {
-		u32 flags = 3;
-		u32 mask = 3;
-
-		if (p->modulation == APSK_16 ||
-		    p->modulation == APSK_32) {
-			flags = 2;
-			mask = 15;
-		}
-		stat = start(fe, flags, mask, ts_config);
-	} else {
-		stat = start_iq(fe, ts_config);
-	}
-
-	if (!stat) {
-		state->started = 1;
-		state->first_time_lock = 1;
-		state->signal_info.status = SX8_DEMOD_WAIT_SIGNAL;
-	}
-
-	return stat;
-}
-
-static int tune(struct dvb_frontend *fe, bool re_tune,
-		unsigned int mode_flags,
-		unsigned int *delay, enum fe_status *status)
-{
-	int r;
-
-	if (re_tune) {
-		r = set_parameters(fe);
-		if (r)
-			return r;
-	}
-	r = read_status(fe, status);
-	if (r)
-		return r;
-
-	if (*status & FE_HAS_LOCK)
-		return 0;
-	*delay = HZ / 10;
-	return 0;
-}
-
-static enum dvbfe_algo get_algo(struct dvb_frontend *fe)
-{
-	return DVBFE_ALGO_HW;
-}
-
-static int set_input(struct dvb_frontend *fe, int input)
-{
-	struct mci *state = fe->demodulator_priv;
-
-	state->tuner = input;
-	dev_dbg(state->base->dev, "MCI-%d: input=%d\n", state->nr, input);
-	return 0;
-}
-
-static struct dvb_frontend_ops mci_ops = {
-	.delsys = { SYS_DVBS, SYS_DVBS2 },
-	.info = {
-		.name			= "Digital Devices MaxSX8 MCI DVB-S/S2/S2X",
-		.frequency_min		= 950000,
-		.frequency_max		= 2150000,
-		.frequency_stepsize	= 0,
-		.frequency_tolerance	= 0,
-		.symbol_rate_min	= 100000,
-		.symbol_rate_max	= 100000000,
-		.caps			= FE_CAN_INVERSION_AUTO |
-					  FE_CAN_FEC_AUTO       |
-					  FE_CAN_QPSK           |
-					  FE_CAN_2G_MODULATION  |
-					  FE_CAN_MULTISTREAM,
-	},
-	.get_frontend_algo		= get_algo,
-	.tune				= tune,
-	.release			= release,
-	.read_status			= read_status,
-};
-
 static struct mci_base *match_base(void *key)
 {
 	struct mci_base *p;
@@ -498,8 +124,7 @@ static int probe(struct mci *state)
 }
 
 struct dvb_frontend
-*ddb_mci_attach(struct ddb_input *input,
-		int mci_type, int nr,
+*ddb_mci_attach(struct ddb_input *input, struct mci_cfg *cfg, int nr,
 		int (**fn_set_input)(struct dvb_frontend *fe, int input))
 {
 	struct ddb_port *port = input->port;
@@ -507,9 +132,9 @@ struct dvb_frontend
 	struct ddb_link *link = &dev->link[port->lnr];
 	struct mci_base *base;
 	struct mci *state;
-	void *key = mci_type ? (void *)port : (void *)link;
+	void *key = cfg->type ? (void *)port : (void *)link;
 
-	state = kzalloc(sizeof(*state), GFP_KERNEL);
+	state = kzalloc(cfg->state_size, GFP_KERNEL);
 	if (!state)
 		return NULL;
 
@@ -518,7 +143,7 @@ struct dvb_frontend
 		base->count++;
 		state->base = base;
 	} else {
-		base = kzalloc(sizeof(*base), GFP_KERNEL);
+		base = kzalloc(cfg->base_size, GFP_KERNEL);
 		if (!base)
 			goto fail;
 		base->key = key;
@@ -535,15 +160,17 @@ struct dvb_frontend
 			goto fail;
 		}
 		list_add(&base->mci_list, &mci_list);
+		if (cfg->base_init)
+			cfg->base_init(base);
 	}
-	state->fe.ops = mci_ops;
+	memcpy(&state->fe.ops, cfg->fe_ops, sizeof(struct dvb_frontend_ops));
 	state->fe.demodulator_priv = state;
 	state->nr = nr;
-	*fn_set_input = set_input;
-
+	*fn_set_input = cfg->set_input;
 	state->tuner = nr;
 	state->demod = nr;
-
+	if (cfg->init)
+		cfg->init(state);
 	return &state->fe;
 fail:
 	kfree(state);