diff options
Diffstat (limited to 'drivers/rapidio/switches/tsi57x.c')
-rw-r--r-- | drivers/rapidio/switches/tsi57x.c | 365 |
1 files changed, 0 insertions, 365 deletions
diff --git a/drivers/rapidio/switches/tsi57x.c b/drivers/rapidio/switches/tsi57x.c deleted file mode 100644 index 271762046f8c..000000000000 --- a/drivers/rapidio/switches/tsi57x.c +++ /dev/null @@ -1,365 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * RapidIO Tsi57x switch family support - * - * Copyright 2009-2010 Integrated Device Technology, Inc. - * Alexandre Bounine <alexandre.bounine@idt.com> - * - Added EM support - * - Modified switch operations initialization. - * - * Copyright 2005 MontaVista Software, Inc. - * Matt Porter <mporter@kernel.crashing.org> - */ - -#include <linux/rio.h> -#include <linux/rio_drv.h> -#include <linux/rio_ids.h> -#include <linux/delay.h> -#include <linux/module.h> -#include "../rio.h" - -/* Global (broadcast) route registers */ -#define SPBC_ROUTE_CFG_DESTID 0x10070 -#define SPBC_ROUTE_CFG_PORT 0x10074 - -/* Per port route registers */ -#define SPP_ROUTE_CFG_DESTID(n) (0x11070 + 0x100*n) -#define SPP_ROUTE_CFG_PORT(n) (0x11074 + 0x100*n) - -#define TSI578_SP_MODE(n) (0x11004 + n*0x100) -#define TSI578_SP_MODE_GLBL 0x10004 -#define TSI578_SP_MODE_PW_DIS 0x08000000 -#define TSI578_SP_MODE_LUT_512 0x01000000 - -#define TSI578_SP_CTL_INDEP(n) (0x13004 + n*0x100) -#define TSI578_SP_LUT_PEINF(n) (0x13010 + n*0x100) -#define TSI578_SP_CS_TX(n) (0x13014 + n*0x100) -#define TSI578_SP_INT_STATUS(n) (0x13018 + n*0x100) - -#define TSI578_GLBL_ROUTE_BASE 0x10078 - -static int -tsi57x_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount, - u16 table, u16 route_destid, u8 route_port) -{ - if (table == RIO_GLOBAL_TABLE) { - rio_mport_write_config_32(mport, destid, hopcount, - SPBC_ROUTE_CFG_DESTID, route_destid); - rio_mport_write_config_32(mport, destid, hopcount, - SPBC_ROUTE_CFG_PORT, route_port); - } else { - rio_mport_write_config_32(mport, destid, hopcount, - SPP_ROUTE_CFG_DESTID(table), route_destid); - rio_mport_write_config_32(mport, destid, hopcount, - SPP_ROUTE_CFG_PORT(table), route_port); - } - - udelay(10); - - return 0; -} - -static int -tsi57x_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount, - u16 table, u16 route_destid, u8 *route_port) -{ - int ret = 0; - u32 result; - - if (table == RIO_GLOBAL_TABLE) { - /* Use local RT of the ingress port to avoid possible - race condition */ - rio_mport_read_config_32(mport, destid, hopcount, - RIO_SWP_INFO_CAR, &result); - table = (result & RIO_SWP_INFO_PORT_NUM_MASK); - } - - rio_mport_write_config_32(mport, destid, hopcount, - SPP_ROUTE_CFG_DESTID(table), route_destid); - rio_mport_read_config_32(mport, destid, hopcount, - SPP_ROUTE_CFG_PORT(table), &result); - - *route_port = (u8)result; - if (*route_port > 15) - ret = -1; - - return ret; -} - -static int -tsi57x_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount, - u16 table) -{ - u32 route_idx; - u32 lut_size; - - lut_size = (mport->sys_size) ? 0x1ff : 0xff; - - if (table == RIO_GLOBAL_TABLE) { - rio_mport_write_config_32(mport, destid, hopcount, - SPBC_ROUTE_CFG_DESTID, 0x80000000); - for (route_idx = 0; route_idx <= lut_size; route_idx++) - rio_mport_write_config_32(mport, destid, hopcount, - SPBC_ROUTE_CFG_PORT, - RIO_INVALID_ROUTE); - } else { - rio_mport_write_config_32(mport, destid, hopcount, - SPP_ROUTE_CFG_DESTID(table), 0x80000000); - for (route_idx = 0; route_idx <= lut_size; route_idx++) - rio_mport_write_config_32(mport, destid, hopcount, - SPP_ROUTE_CFG_PORT(table) , RIO_INVALID_ROUTE); - } - - return 0; -} - -static int -tsi57x_set_domain(struct rio_mport *mport, u16 destid, u8 hopcount, - u8 sw_domain) -{ - u32 regval; - - /* - * Switch domain configuration operates only at global level - */ - - /* Turn off flat (LUT_512) mode */ - rio_mport_read_config_32(mport, destid, hopcount, - TSI578_SP_MODE_GLBL, ®val); - rio_mport_write_config_32(mport, destid, hopcount, TSI578_SP_MODE_GLBL, - regval & ~TSI578_SP_MODE_LUT_512); - /* Set switch domain base */ - rio_mport_write_config_32(mport, destid, hopcount, - TSI578_GLBL_ROUTE_BASE, - (u32)(sw_domain << 24)); - return 0; -} - -static int -tsi57x_get_domain(struct rio_mport *mport, u16 destid, u8 hopcount, - u8 *sw_domain) -{ - u32 regval; - - /* - * Switch domain configuration operates only at global level - */ - rio_mport_read_config_32(mport, destid, hopcount, - TSI578_GLBL_ROUTE_BASE, ®val); - - *sw_domain = (u8)(regval >> 24); - - return 0; -} - -static int -tsi57x_em_init(struct rio_dev *rdev) -{ - u32 regval; - int portnum; - - pr_debug("TSI578 %s [%d:%d]\n", __func__, rdev->destid, rdev->hopcount); - - for (portnum = 0; - portnum < RIO_GET_TOTAL_PORTS(rdev->swpinfo); portnum++) { - /* Make sure that Port-Writes are enabled (for all ports) */ - rio_read_config_32(rdev, - TSI578_SP_MODE(portnum), ®val); - rio_write_config_32(rdev, - TSI578_SP_MODE(portnum), - regval & ~TSI578_SP_MODE_PW_DIS); - - /* Clear all pending interrupts */ - rio_read_config_32(rdev, - RIO_DEV_PORT_N_ERR_STS_CSR(rdev, portnum), - ®val); - rio_write_config_32(rdev, - RIO_DEV_PORT_N_ERR_STS_CSR(rdev, portnum), - regval & 0x07120214); - - rio_read_config_32(rdev, - TSI578_SP_INT_STATUS(portnum), ®val); - rio_write_config_32(rdev, - TSI578_SP_INT_STATUS(portnum), - regval & 0x000700bd); - - /* Enable all interrupts to allow ports to send a port-write */ - rio_read_config_32(rdev, - TSI578_SP_CTL_INDEP(portnum), ®val); - rio_write_config_32(rdev, - TSI578_SP_CTL_INDEP(portnum), - regval | 0x000b0000); - - /* Skip next (odd) port if the current port is in x4 mode */ - rio_read_config_32(rdev, - RIO_DEV_PORT_N_CTL_CSR(rdev, portnum), - ®val); - if ((regval & RIO_PORT_N_CTL_PWIDTH) == RIO_PORT_N_CTL_PWIDTH_4) - portnum++; - } - - /* set TVAL = ~50us */ - rio_write_config_32(rdev, - rdev->phys_efptr + RIO_PORT_LINKTO_CTL_CSR, 0x9a << 8); - - return 0; -} - -static int -tsi57x_em_handler(struct rio_dev *rdev, u8 portnum) -{ - struct rio_mport *mport = rdev->net->hport; - u32 intstat, err_status; - int sendcount, checkcount; - u8 route_port; - u32 regval; - - rio_read_config_32(rdev, - RIO_DEV_PORT_N_ERR_STS_CSR(rdev, portnum), - &err_status); - - if ((err_status & RIO_PORT_N_ERR_STS_PORT_OK) && - (err_status & (RIO_PORT_N_ERR_STS_OUT_ES | - RIO_PORT_N_ERR_STS_INP_ES))) { - /* Remove any queued packets by locking/unlocking port */ - rio_read_config_32(rdev, - RIO_DEV_PORT_N_CTL_CSR(rdev, portnum), - ®val); - if (!(regval & RIO_PORT_N_CTL_LOCKOUT)) { - rio_write_config_32(rdev, - RIO_DEV_PORT_N_CTL_CSR(rdev, portnum), - regval | RIO_PORT_N_CTL_LOCKOUT); - udelay(50); - rio_write_config_32(rdev, - RIO_DEV_PORT_N_CTL_CSR(rdev, portnum), - regval); - } - - /* Read from link maintenance response register to clear - * valid bit - */ - rio_read_config_32(rdev, - RIO_DEV_PORT_N_MNT_RSP_CSR(rdev, portnum), - ®val); - - /* Send a Packet-Not-Accepted/Link-Request-Input-Status control - * symbol to recover from IES/OES - */ - sendcount = 3; - while (sendcount) { - rio_write_config_32(rdev, - TSI578_SP_CS_TX(portnum), 0x40fc8000); - checkcount = 3; - while (checkcount--) { - udelay(50); - rio_read_config_32(rdev, - RIO_DEV_PORT_N_MNT_RSP_CSR(rdev, - portnum), - ®val); - if (regval & RIO_PORT_N_MNT_RSP_RVAL) - goto exit_es; - } - - sendcount--; - } - } - -exit_es: - /* Clear implementation specific error status bits */ - rio_read_config_32(rdev, TSI578_SP_INT_STATUS(portnum), &intstat); - pr_debug("TSI578[%x:%x] SP%d_INT_STATUS=0x%08x\n", - rdev->destid, rdev->hopcount, portnum, intstat); - - if (intstat & 0x10000) { - rio_read_config_32(rdev, - TSI578_SP_LUT_PEINF(portnum), ®val); - regval = (mport->sys_size) ? (regval >> 16) : (regval >> 24); - route_port = rdev->rswitch->route_table[regval]; - pr_debug("RIO: TSI578[%s] P%d LUT Parity Error (destID=%d)\n", - rio_name(rdev), portnum, regval); - tsi57x_route_add_entry(mport, rdev->destid, rdev->hopcount, - RIO_GLOBAL_TABLE, regval, route_port); - } - - rio_write_config_32(rdev, TSI578_SP_INT_STATUS(portnum), - intstat & 0x000700bd); - - return 0; -} - -static struct rio_switch_ops tsi57x_switch_ops = { - .owner = THIS_MODULE, - .add_entry = tsi57x_route_add_entry, - .get_entry = tsi57x_route_get_entry, - .clr_table = tsi57x_route_clr_table, - .set_domain = tsi57x_set_domain, - .get_domain = tsi57x_get_domain, - .em_init = tsi57x_em_init, - .em_handle = tsi57x_em_handler, -}; - -static int tsi57x_probe(struct rio_dev *rdev, const struct rio_device_id *id) -{ - pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev)); - - spin_lock(&rdev->rswitch->lock); - - if (rdev->rswitch->ops) { - spin_unlock(&rdev->rswitch->lock); - return -EINVAL; - } - rdev->rswitch->ops = &tsi57x_switch_ops; - - if (rdev->do_enum) { - /* Ensure that default routing is disabled on startup */ - rio_write_config_32(rdev, RIO_STD_RTE_DEFAULT_PORT, - RIO_INVALID_ROUTE); - } - - spin_unlock(&rdev->rswitch->lock); - return 0; -} - -static void tsi57x_remove(struct rio_dev *rdev) -{ - pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev)); - spin_lock(&rdev->rswitch->lock); - if (rdev->rswitch->ops != &tsi57x_switch_ops) { - spin_unlock(&rdev->rswitch->lock); - return; - } - rdev->rswitch->ops = NULL; - spin_unlock(&rdev->rswitch->lock); -} - -static const struct rio_device_id tsi57x_id_table[] = { - {RIO_DEVICE(RIO_DID_TSI572, RIO_VID_TUNDRA)}, - {RIO_DEVICE(RIO_DID_TSI574, RIO_VID_TUNDRA)}, - {RIO_DEVICE(RIO_DID_TSI577, RIO_VID_TUNDRA)}, - {RIO_DEVICE(RIO_DID_TSI578, RIO_VID_TUNDRA)}, - { 0, } /* terminate list */ -}; - -static struct rio_driver tsi57x_driver = { - .name = "tsi57x", - .id_table = tsi57x_id_table, - .probe = tsi57x_probe, - .remove = tsi57x_remove, -}; - -static int __init tsi57x_init(void) -{ - return rio_register_driver(&tsi57x_driver); -} - -static void __exit tsi57x_exit(void) -{ - rio_unregister_driver(&tsi57x_driver); -} - -device_initcall(tsi57x_init); -module_exit(tsi57x_exit); - -MODULE_DESCRIPTION("IDT Tsi57x Serial RapidIO switch family driver"); -MODULE_AUTHOR("Integrated Device Technology, Inc."); -MODULE_LICENSE("GPL"); |