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rapidio: modify for rev.3 specification changes

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Implement changes made in RapidIO specification rev.3 to LP-Serial Physical
Layer register definitions:

 - use per-port register offset calculations based on LP-Serial Extended
   Features Block (EFB) Register Map type (I or II) with different
   per-port offset step (0x20 vs 0x40 respectfully).

 - remove deprecated Parallel Physical layer definitions and related
   code.

[alexandre.bounine@idt.com: fix DocBook warning for gen3 update]
  Link: http://lkml.kernel.org/r/1469191173-19338-1-git-send-email-alexandre.bounine@idt.com
Link: http://lkml.kernel.org/r/1469125134-16523-12-git-send-email-alexandre.bounine@idt.com
Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Tested-by: Barry Wood <barry.wood@idt.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com>
Cc: Barry Wood <barry.wood@idt.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexandre Bounine
2016-08-02 14:06:57 -07:00
committed by Linus Torvalds
parent a057a52e94
commit 1ae842de1d
8 changed files with 249 additions and 191 deletions
Download Patch File Download Diff File Expand all files Collapse all files

150
drivers/rapidio/rio.c
View File

@@ -786,10 +786,11 @@ EXPORT_SYMBOL_GPL(rio_unmap_outb_region);
* @local: Indicate a local master port or remote device access
* @destid: Destination ID of the device
* @hopcount: Number of switch hops to the device
* @rmap: pointer to location to store register map type info
*/
u32
rio_mport_get_physefb(struct rio_mport *port, int local,
u16 destid, u8 hopcount)
u16 destid, u8 hopcount, u32 *rmap)
{
u32 ext_ftr_ptr;
u32 ftr_header;
@@ -807,14 +808,21 @@ rio_mport_get_physefb(struct rio_mport *port, int local,
ftr_header = RIO_GET_BLOCK_ID(ftr_header);
switch (ftr_header) {
case RIO_EFB_SER_EP_ID_V13P:
case RIO_EFB_SER_EP_REC_ID_V13P:
case RIO_EFB_SER_EP_FREE_ID_V13P:
case RIO_EFB_SER_EP_ID:
case RIO_EFB_SER_EP_REC_ID:
case RIO_EFB_SER_EP_FREE_ID:
case RIO_EFB_SER_EP_FREC_ID:
case RIO_EFB_SER_EP_M1_ID:
case RIO_EFB_SER_EP_SW_M1_ID:
case RIO_EFB_SER_EPF_M1_ID:
case RIO_EFB_SER_EPF_SW_M1_ID:
*rmap = 1;
return ext_ftr_ptr;
case RIO_EFB_SER_EP_M2_ID:
case RIO_EFB_SER_EP_SW_M2_ID:
case RIO_EFB_SER_EPF_M2_ID:
case RIO_EFB_SER_EPF_SW_M2_ID:
*rmap = 2;
return ext_ftr_ptr;
default:
@@ -873,16 +881,16 @@ int rio_set_port_lockout(struct rio_dev *rdev, u32 pnum, int lock)
u32 regval;
rio_read_config_32(rdev,
rdev->phys_efptr + RIO_PORT_N_CTL_CSR(pnum),
&regval);
RIO_DEV_PORT_N_CTL_CSR(rdev, pnum),
&regval);
if (lock)
regval |= RIO_PORT_N_CTL_LOCKOUT;
else
regval &= ~RIO_PORT_N_CTL_LOCKOUT;
rio_write_config_32(rdev,
rdev->phys_efptr + RIO_PORT_N_CTL_CSR(pnum),
regval);
RIO_DEV_PORT_N_CTL_CSR(rdev, pnum),
regval);
return 0;
}
EXPORT_SYMBOL_GPL(rio_set_port_lockout);
@@ -906,6 +914,7 @@ int rio_enable_rx_tx_port(struct rio_mport *port,
#ifdef CONFIG_RAPIDIO_ENABLE_RX_TX_PORTS
u32 regval;
u32 ext_ftr_ptr;
u32 rmap;
/*
* enable rx input tx output port
@@ -913,34 +922,29 @@ int rio_enable_rx_tx_port(struct rio_mport *port,
pr_debug("rio_enable_rx_tx_port(local = %d, destid = %d, hopcount = "
"%d, port_num = %d)\n", local, destid, hopcount, port_num);
ext_ftr_ptr = rio_mport_get_physefb(port, local, destid, hopcount);
ext_ftr_ptr = rio_mport_get_physefb(port, local, destid,
hopcount, &rmap);
if (local) {
rio_local_read_config_32(port, ext_ftr_ptr +
RIO_PORT_N_CTL_CSR(0),
rio_local_read_config_32(port,
ext_ftr_ptr + RIO_PORT_N_CTL_CSR(0, rmap),
&regval);
} else {
if (rio_mport_read_config_32(port, destid, hopcount,
ext_ftr_ptr + RIO_PORT_N_CTL_CSR(port_num), &regval) < 0)
ext_ftr_ptr + RIO_PORT_N_CTL_CSR(port_num, rmap),
&regval) < 0)
return -EIO;
}
if (regval & RIO_PORT_N_CTL_P_TYP_SER) {
/* serial */
regval = regval | RIO_PORT_N_CTL_EN_RX_SER
| RIO_PORT_N_CTL_EN_TX_SER;
} else {
/* parallel */
regval = regval | RIO_PORT_N_CTL_EN_RX_PAR
| RIO_PORT_N_CTL_EN_TX_PAR;
}
regval = regval | RIO_PORT_N_CTL_EN_RX | RIO_PORT_N_CTL_EN_TX;
if (local) {
rio_local_write_config_32(port, ext_ftr_ptr +
RIO_PORT_N_CTL_CSR(0), regval);
rio_local_write_config_32(port,
ext_ftr_ptr + RIO_PORT_N_CTL_CSR(0, rmap), regval);
} else {
if (rio_mport_write_config_32(port, destid, hopcount,
ext_ftr_ptr + RIO_PORT_N_CTL_CSR(port_num), regval) < 0)
ext_ftr_ptr + RIO_PORT_N_CTL_CSR(port_num, rmap),
regval) < 0)
return -EIO;
}
#endif
@@ -1042,14 +1046,14 @@ rio_get_input_status(struct rio_dev *rdev, int pnum, u32 *lnkresp)
/* Read from link maintenance response register
* to clear valid bit */
rio_read_config_32(rdev,
rdev->phys_efptr + RIO_PORT_N_MNT_RSP_CSR(pnum),
RIO_DEV_PORT_N_MNT_RSP_CSR(rdev, pnum),
&regval);
udelay(50);
}
/* Issue Input-status command */
rio_write_config_32(rdev,
rdev->phys_efptr + RIO_PORT_N_MNT_REQ_CSR(pnum),
RIO_DEV_PORT_N_MNT_REQ_CSR(rdev, pnum),
RIO_MNT_REQ_CMD_IS);
/* Exit if the response is not expected */
@@ -1060,7 +1064,7 @@ rio_get_input_status(struct rio_dev *rdev, int pnum, u32 *lnkresp)
while (checkcount--) {
udelay(50);
rio_read_config_32(rdev,
rdev->phys_efptr + RIO_PORT_N_MNT_RSP_CSR(pnum),
RIO_DEV_PORT_N_MNT_RSP_CSR(rdev, pnum),
&regval);
if (regval & RIO_PORT_N_MNT_RSP_RVAL) {
*lnkresp = regval;
@@ -1076,6 +1080,13 @@ rio_get_input_status(struct rio_dev *rdev, int pnum, u32 *lnkresp)
* @rdev: Pointer to RIO device control structure
* @pnum: Switch port number to clear errors
* @err_status: port error status (if 0 reads register from device)
*
* TODO: Currently this routine is not compatible with recovery process
* specified for idt_gen3 RapidIO switch devices. It has to be reviewed
* to implement universal recovery process that is compatible full range
* off available devices.
* IDT gen3 switch driver now implements HW-specific error handler that
* issues soft port reset to the port to reset ERR_STOP bits and ackIDs.
*/
static int rio_clr_err_stopped(struct rio_dev *rdev, u32 pnum, u32 err_status)
{
@@ -1085,10 +1096,10 @@ static int rio_clr_err_stopped(struct rio_dev *rdev, u32 pnum, u32 err_status)
if (err_status == 0)
rio_read_config_32(rdev,
rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(pnum),
RIO_DEV_PORT_N_ERR_STS_CSR(rdev, pnum),
&err_status);
if (err_status & RIO_PORT_N_ERR_STS_PW_OUT_ES) {
if (err_status & RIO_PORT_N_ERR_STS_OUT_ES) {
pr_debug("RIO_EM: servicing Output Error-Stopped state\n");
/*
* Send a Link-Request/Input-Status control symbol
@@ -1103,7 +1114,7 @@ static int rio_clr_err_stopped(struct rio_dev *rdev, u32 pnum, u32 err_status)
far_ackid = (regval & RIO_PORT_N_MNT_RSP_ASTAT) >> 5;
far_linkstat = regval & RIO_PORT_N_MNT_RSP_LSTAT;
rio_read_config_32(rdev,
rdev->phys_efptr + RIO_PORT_N_ACK_STS_CSR(pnum),
RIO_DEV_PORT_N_ACK_STS_CSR(rdev, pnum),
&regval);
pr_debug("RIO_EM: SP%d_ACK_STS_CSR=0x%08x\n", pnum, regval);
near_ackid = (regval & RIO_PORT_N_ACK_INBOUND) >> 24;
@@ -1121,43 +1132,43 @@ static int rio_clr_err_stopped(struct rio_dev *rdev, u32 pnum, u32 err_status)
* far inbound.
*/
rio_write_config_32(rdev,
rdev->phys_efptr + RIO_PORT_N_ACK_STS_CSR(pnum),
RIO_DEV_PORT_N_ACK_STS_CSR(rdev, pnum),
(near_ackid << 24) |
(far_ackid << 8) | far_ackid);
/* Align far outstanding/outbound ackIDs with
* near inbound.
*/
far_ackid++;
if (nextdev)
rio_write_config_32(nextdev,
nextdev->phys_efptr +
RIO_PORT_N_ACK_STS_CSR(RIO_GET_PORT_NUM(nextdev->swpinfo)),
(far_ackid << 24) |
(near_ackid << 8) | near_ackid);
else
pr_debug("RIO_EM: Invalid nextdev pointer (NULL)\n");
if (!nextdev) {
pr_debug("RIO_EM: nextdev pointer == NULL\n");
goto rd_err;
}
rio_write_config_32(nextdev,
RIO_DEV_PORT_N_ACK_STS_CSR(nextdev,
RIO_GET_PORT_NUM(nextdev->swpinfo)),
(far_ackid << 24) |
(near_ackid << 8) | near_ackid);
}
rd_err:
rio_read_config_32(rdev,
rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(pnum),
&err_status);
rio_read_config_32(rdev, RIO_DEV_PORT_N_ERR_STS_CSR(rdev, pnum),
&err_status);
pr_debug("RIO_EM: SP%d_ERR_STS_CSR=0x%08x\n", pnum, err_status);
}
if ((err_status & RIO_PORT_N_ERR_STS_PW_INP_ES) && nextdev) {
if ((err_status & RIO_PORT_N_ERR_STS_INP_ES) && nextdev) {
pr_debug("RIO_EM: servicing Input Error-Stopped state\n");
rio_get_input_status(nextdev,
RIO_GET_PORT_NUM(nextdev->swpinfo), NULL);
udelay(50);
rio_read_config_32(rdev,
rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(pnum),
&err_status);
rio_read_config_32(rdev, RIO_DEV_PORT_N_ERR_STS_CSR(rdev, pnum),
&err_status);
pr_debug("RIO_EM: SP%d_ERR_STS_CSR=0x%08x\n", pnum, err_status);
}
return (err_status & (RIO_PORT_N_ERR_STS_PW_OUT_ES |
RIO_PORT_N_ERR_STS_PW_INP_ES)) ? 1 : 0;
return (err_status & (RIO_PORT_N_ERR_STS_OUT_ES |
RIO_PORT_N_ERR_STS_INP_ES)) ? 1 : 0;
}
/**
@@ -1257,9 +1268,8 @@ int rio_inb_pwrite_handler(struct rio_mport *mport, union rio_pw_msg *pw_msg)
if (rdev->rswitch->ops && rdev->rswitch->ops->em_handle)
rdev->rswitch->ops->em_handle(rdev, portnum);
rio_read_config_32(rdev,
rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum),
&err_status);
rio_read_config_32(rdev, RIO_DEV_PORT_N_ERR_STS_CSR(rdev, portnum),
&err_status);
pr_debug("RIO_PW: SP%d_ERR_STS_CSR=0x%08x\n", portnum, err_status);
if (err_status & RIO_PORT_N_ERR_STS_PORT_OK) {
@@ -1276,8 +1286,8 @@ int rio_inb_pwrite_handler(struct rio_mport *mport, union rio_pw_msg *pw_msg)
* Depending on the link partner state, two attempts
* may be needed for successful recovery.
*/
if (err_status & (RIO_PORT_N_ERR_STS_PW_OUT_ES |
RIO_PORT_N_ERR_STS_PW_INP_ES)) {
if (err_status & (RIO_PORT_N_ERR_STS_OUT_ES |
RIO_PORT_N_ERR_STS_INP_ES)) {
if (rio_clr_err_stopped(rdev, portnum, err_status))
rio_clr_err_stopped(rdev, portnum, 0);
}
@@ -1287,10 +1297,18 @@ int rio_inb_pwrite_handler(struct rio_mport *mport, union rio_pw_msg *pw_msg)
rdev->rswitch->port_ok &= ~(1 << portnum);
rio_set_port_lockout(rdev, portnum, 1);
if (rdev->phys_rmap == 1) {
rio_write_config_32(rdev,
rdev->phys_efptr +
RIO_PORT_N_ACK_STS_CSR(portnum),
RIO_DEV_PORT_N_ACK_STS_CSR(rdev, portnum),
RIO_PORT_N_ACK_CLEAR);
} else {
rio_write_config_32(rdev,
RIO_DEV_PORT_N_OB_ACK_CSR(rdev, portnum),
RIO_PORT_N_OB_ACK_CLEAR);
rio_write_config_32(rdev,
RIO_DEV_PORT_N_IB_ACK_CSR(rdev, portnum),
0);
}
/* Schedule Extraction Service */
pr_debug("RIO_PW: Device Extraction on [%s]-P%d\n",
@@ -1319,9 +1337,8 @@ int rio_inb_pwrite_handler(struct rio_mport *mport, union rio_pw_msg *pw_msg)
}
/* Clear remaining error bits and Port-Write Pending bit */
rio_write_config_32(rdev,
rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum),
err_status);
rio_write_config_32(rdev, RIO_DEV_PORT_N_ERR_STS_CSR(rdev, portnum),
err_status);
return 0;
}
@@ -1372,20 +1389,7 @@ EXPORT_SYMBOL_GPL(rio_mport_get_efb);
* Tell if a device supports a given RapidIO capability.
* Returns the offset of the requested extended feature
* block within the device's RIO configuration space or
* 0 in case the device does not support it. Possible
* values for @ftr:
*
* %RIO_EFB_PAR_EP_ID LP/LVDS EP Devices
*
* %RIO_EFB_PAR_EP_REC_ID LP/LVDS EP Recovery Devices
*
* %RIO_EFB_PAR_EP_FREE_ID LP/LVDS EP Free Devices
*
* %RIO_EFB_SER_EP_ID LP/Serial EP Devices
*
* %RIO_EFB_SER_EP_REC_ID LP/Serial EP Recovery Devices
*
* %RIO_EFB_SER_EP_FREE_ID LP/Serial EP Free Devices
* 0 in case the device does not support it.
*/
u32
rio_mport_get_feature(struct rio_mport * port, int local, u16 destid,