rapidio: use common destid storage for endpoints and switches

Change code to use one storage location common for switches and endpoints.
This eliminates unnecessary device type checks during basic access
operations.  Logic that assigns destid to RIO devices stays unchanged - as
before, switches use an associated destid because they do not have their
own.

Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Li Yang <leoli@freescale.com>
Cc: Thomas Moll <thomas.moll@sysgo.com>
Cc: Micha Nelissen <micha@neli.hopto.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 32 insertions, 61 deletions

diff --git a/drivers/rapidio/switches/idt_gen2.c b/drivers/rapidio/switches/idt_gen2.c
index 0bb871cb5c40..dd4b2b7112c0 100644
--- a/drivers/rapidio/switches/idt_gen2.c
+++ b/drivers/rapidio/switches/idt_gen2.c
@@ -209,9 +209,6 @@ idtg2_get_domain(struct rio_mport *mport, u16 destid, u8 hopcount,
 static int
 idtg2_em_init(struct rio_dev *rdev)
 {
-	struct rio_mport *mport = rdev->net->hport;
-	u16 destid = rdev->rswitch->destid;
-	u8 hopcount = rdev->rswitch->hopcount;
 	u32 regval;
 	int i, tmp;
 
@@ -220,29 +217,25 @@ idtg2_em_init(struct rio_dev *rdev)
 	 * All standard EM configuration should be performed at upper level.
 	 */
 
-	pr_debug("RIO: %s [%d:%d]\n", __func__, destid, hopcount);
+	pr_debug("RIO: %s [%d:%d]\n", __func__, rdev->destid, rdev->hopcount);
 
 	/* Set Port-Write info CSR: PRIO=3 and CRF=1 */
-	rio_mport_write_config_32(mport, destid, hopcount,
-			IDT_PW_INFO_CSR, 0x0000e000);
+	rio_write_config_32(rdev, IDT_PW_INFO_CSR, 0x0000e000);
 
 	/*
 	 * Configure LT LAYER error reporting.
 	 */
 
 	/* Enable standard (RIO.p8) error reporting */
-	rio_mport_write_config_32(mport, destid, hopcount,
-			IDT_LT_ERR_REPORT_EN,
+	rio_write_config_32(rdev, IDT_LT_ERR_REPORT_EN,
 			REM_LTL_ERR_ILLTRAN | REM_LTL_ERR_UNSOLR |
 			REM_LTL_ERR_UNSUPTR);
 
 	/* Use Port-Writes for LT layer error reporting.
 	 * Enable per-port reset
 	 */
-	rio_mport_read_config_32(mport, destid, hopcount,
-			IDT_DEV_CTRL_1, &regval);
-	rio_mport_write_config_32(mport, destid, hopcount,
-			IDT_DEV_CTRL_1,
+	rio_read_config_32(rdev, IDT_DEV_CTRL_1, &regval);
+	rio_write_config_32(rdev, IDT_DEV_CTRL_1,
 			regval | IDT_DEV_CTRL_1_GENPW | IDT_DEV_CTRL_1_PRSTBEH);
 
 	/*
@@ -250,45 +243,40 @@ idtg2_em_init(struct rio_dev *rdev)
 	 */
 
 	/* Report all RIO.p8 errors supported by device */
-	rio_mport_write_config_32(mport, destid, hopcount,
-			IDT_PORT_ERR_REPORT_EN_BC, 0x807e8037);
+	rio_write_config_32(rdev, IDT_PORT_ERR_REPORT_EN_BC, 0x807e8037);
 
 	/* Configure reporting of implementation specific errors/events */
-	rio_mport_write_config_32(mport, destid, hopcount,
-			IDT_PORT_ISERR_REPORT_EN_BC, IDT_PORT_INIT_TX_ACQUIRED);
+	rio_write_config_32(rdev, IDT_PORT_ISERR_REPORT_EN_BC,
+			    IDT_PORT_INIT_TX_ACQUIRED);
 
 	/* Use Port-Writes for port error reporting and enable error logging */
 	tmp = RIO_GET_TOTAL_PORTS(rdev->swpinfo);
 	for (i = 0; i < tmp; i++) {
-		rio_mport_read_config_32(mport, destid, hopcount,
-				IDT_PORT_OPS(i), &regval);
-		rio_mport_write_config_32(mport, destid, hopcount,
+		rio_read_config_32(rdev, IDT_PORT_OPS(i), &regval);
+		rio_write_config_32(rdev,
 				IDT_PORT_OPS(i), regval | IDT_PORT_OPS_GENPW |
 				IDT_PORT_OPS_PL_ELOG |
 				IDT_PORT_OPS_LL_ELOG |
 				IDT_PORT_OPS_LT_ELOG);
 	}
 	/* Overwrite error log if full */
-	rio_mport_write_config_32(mport, destid, hopcount,
-			IDT_ERR_CAP, IDT_ERR_CAP_LOG_OVERWR);
+	rio_write_config_32(rdev, IDT_ERR_CAP, IDT_ERR_CAP_LOG_OVERWR);
 
 	/*
 	 * Configure LANE error reporting.
 	 */
 
 	/* Disable line error reporting */
-	rio_mport_write_config_32(mport, destid, hopcount,
-			IDT_LANE_ERR_REPORT_EN_BC, 0);
+	rio_write_config_32(rdev, IDT_LANE_ERR_REPORT_EN_BC, 0);
 
 	/* Use Port-Writes for lane error reporting (when enabled)
 	 * (do per-lane update because lanes may have different configuration)
 	 */
 	tmp = (rdev->did == RIO_DID_IDTCPS1848) ? 48 : 16;
 	for (i = 0; i < tmp; i++) {
-		rio_mport_read_config_32(mport, destid, hopcount,
-				IDT_LANE_CTRL(i), &regval);
-		rio_mport_write_config_32(mport, destid, hopcount,
-				IDT_LANE_CTRL(i), regval | IDT_LANE_CTRL_GENPW);
+		rio_read_config_32(rdev, IDT_LANE_CTRL(i), &regval);
+		rio_write_config_32(rdev, IDT_LANE_CTRL(i),
+				    regval | IDT_LANE_CTRL_GENPW);
 	}
 
 	/*
@@ -296,41 +284,32 @@ idtg2_em_init(struct rio_dev *rdev)
 	 */
 
 	/* Disable JTAG and I2C Error capture */
-	rio_mport_write_config_32(mport, destid, hopcount,
-			IDT_AUX_PORT_ERR_CAP_EN, 0);
+	rio_write_config_32(rdev, IDT_AUX_PORT_ERR_CAP_EN, 0);
 
 	/* Disable JTAG and I2C Error reporting/logging */
-	rio_mport_write_config_32(mport, destid, hopcount,
-			IDT_AUX_ERR_REPORT_EN, 0);
+	rio_write_config_32(rdev, IDT_AUX_ERR_REPORT_EN, 0);
 
 	/* Disable Port-Write notification from JTAG */
-	rio_mport_write_config_32(mport, destid, hopcount,
-			IDT_JTAG_CTRL, 0);
+	rio_write_config_32(rdev, IDT_JTAG_CTRL, 0);
 
 	/* Disable Port-Write notification from I2C */
-	rio_mport_read_config_32(mport, destid, hopcount,
-			IDT_I2C_MCTRL, &regval);
-	rio_mport_write_config_32(mport, destid, hopcount,
-			IDT_I2C_MCTRL,
-			regval & ~IDT_I2C_MCTRL_GENPW);
+	rio_read_config_32(rdev, IDT_I2C_MCTRL, &regval);
+	rio_write_config_32(rdev, IDT_I2C_MCTRL, regval & ~IDT_I2C_MCTRL_GENPW);
 
 	/*
 	 * Configure CFG_BLK error reporting.
 	 */
 
 	/* Disable Configuration Block error capture */
-	rio_mport_write_config_32(mport, destid, hopcount,
-			IDT_CFGBLK_ERR_CAPTURE_EN, 0);
+	rio_write_config_32(rdev, IDT_CFGBLK_ERR_CAPTURE_EN, 0);
 
 	/* Disable Port-Writes for Configuration Block error reporting */
-	rio_mport_read_config_32(mport, destid, hopcount,
-			IDT_CFGBLK_ERR_REPORT, &regval);
-	rio_mport_write_config_32(mport, destid, hopcount,
-			IDT_CFGBLK_ERR_REPORT,
-			regval & ~IDT_CFGBLK_ERR_REPORT_GENPW);
+	rio_read_config_32(rdev, IDT_CFGBLK_ERR_REPORT, &regval);
+	rio_write_config_32(rdev, IDT_CFGBLK_ERR_REPORT,
+			    regval & ~IDT_CFGBLK_ERR_REPORT_GENPW);
 
 	/* set TVAL = ~50us */
-	rio_mport_write_config_32(mport, destid, hopcount,
+	rio_write_config_32(rdev,
 		rdev->phys_efptr + RIO_PORT_LINKTO_CTL_CSR, 0x8e << 8);
 
 	return 0;
@@ -339,18 +318,15 @@ idtg2_em_init(struct rio_dev *rdev)
 static int
 idtg2_em_handler(struct rio_dev *rdev, u8 portnum)
 {
-	struct rio_mport *mport = rdev->net->hport;
-	u16 destid = rdev->rswitch->destid;
-	u8 hopcount = rdev->rswitch->hopcount;
 	u32 regval, em_perrdet, em_ltlerrdet;
 
-	rio_mport_read_config_32(mport, destid, hopcount,
+	rio_read_config_32(rdev,
 		rdev->em_efptr + RIO_EM_LTL_ERR_DETECT, &em_ltlerrdet);
 	if (em_ltlerrdet) {
 		/* Service Logical/Transport Layer Error(s) */
 		if (em_ltlerrdet & REM_LTL_ERR_IMPSPEC) {
 			/* Implementation specific error reported */
-			rio_mport_read_config_32(mport, destid, hopcount,
+			rio_read_config_32(rdev,
 					IDT_ISLTL_ADDRESS_CAP, &regval);
 
 			pr_debug("RIO: %s Implementation Specific LTL errors" \
@@ -358,13 +334,12 @@ idtg2_em_handler(struct rio_dev *rdev, u8 portnum)
 				 rio_name(rdev), em_ltlerrdet, regval);
 
 			/* Clear implementation specific address capture CSR */
-			rio_mport_write_config_32(mport, destid, hopcount,
-					IDT_ISLTL_ADDRESS_CAP, 0);
+			rio_write_config_32(rdev, IDT_ISLTL_ADDRESS_CAP, 0);
 
 		}
 	}
 
-	rio_mport_read_config_32(mport, destid, hopcount,
+	rio_read_config_32(rdev,
 		rdev->em_efptr + RIO_EM_PN_ERR_DETECT(portnum), &em_perrdet);
 	if (em_perrdet) {
 		/* Service Port-Level Error(s) */
@@ -372,14 +347,14 @@ idtg2_em_handler(struct rio_dev *rdev, u8 portnum)
 			/* Implementation Specific port error reported */
 
 			/* Get IS errors reported */
-			rio_mport_read_config_32(mport, destid, hopcount,
+			rio_read_config_32(rdev,
 					IDT_PORT_ISERR_DET(portnum), &regval);
 
 			pr_debug("RIO: %s Implementation Specific Port" \
 				 " errors 0x%x\n", rio_name(rdev), regval);
 
 			/* Clear all implementation specific events */
-			rio_mport_write_config_32(mport, destid, hopcount,
+			rio_write_config_32(rdev,
 					IDT_PORT_ISERR_DET(portnum), 0);
 		}
 	}
@@ -391,14 +366,10 @@ static ssize_t
 idtg2_show_errlog(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct rio_dev *rdev = to_rio_dev(dev);
-	struct rio_mport *mport = rdev->net->hport;
-	u16 destid = rdev->rswitch->destid;
-	u8 hopcount = rdev->rswitch->hopcount;
 	ssize_t len = 0;
 	u32 regval;
 
-	while (!rio_mport_read_config_32(mport, destid, hopcount,
-					 IDT_ERR_RD, &regval)) {
+	while (!rio_read_config_32(rdev, IDT_ERR_RD, &regval)) {
 		if (!regval)    /* 0 = end of log */
 			break;
 		len += snprintf(buf + len, PAGE_SIZE - len,