diff options
Diffstat (limited to 'drivers/tty/hvc')
| -rw-r--r-- | drivers/tty/hvc/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/tty/hvc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/tty/hvc/hvc_beat.c | 134 | ||||
| -rw-r--r-- | drivers/tty/hvc/hvc_console.c | 3 | ||||
| -rw-r--r-- | drivers/tty/hvc/hvc_iucv.c | 2 | ||||
| -rw-r--r-- | drivers/tty/hvc/hvc_opal.c | 33 | ||||
| -rw-r--r-- | drivers/tty/hvc/hvc_tile.c | 3 | ||||
| -rw-r--r-- | drivers/tty/hvc/hvc_xen.c | 2 | ||||
| -rw-r--r-- | drivers/tty/hvc/hvcs.c | 4 |
9 files changed, 18 insertions, 171 deletions
diff --git a/drivers/tty/hvc/Kconfig b/drivers/tty/hvc/Kconfig index 8902f9b4d..2509d057b 100644 --- a/drivers/tty/hvc/Kconfig +++ b/drivers/tty/hvc/Kconfig @@ -42,13 +42,6 @@ config HVC_RTAS help IBM Console device driver which makes use of RTAS -config HVC_BEAT - bool "Toshiba's Beat Hypervisor Console support" - depends on PPC_CELLEB - select HVC_DRIVER - help - Toshiba's Cell Reference Set Beat Console device driver - config HVC_IUCV bool "z/VM IUCV Hypervisor console support (VM only)" depends on S390 diff --git a/drivers/tty/hvc/Makefile b/drivers/tty/hvc/Makefile index 4ca3723b0..6a2702be7 100644 --- a/drivers/tty/hvc/Makefile +++ b/drivers/tty/hvc/Makefile @@ -4,7 +4,6 @@ obj-$(CONFIG_HVC_OLD_HVSI) += hvsi.o obj-$(CONFIG_HVC_RTAS) += hvc_rtas.o obj-$(CONFIG_HVC_TILE) += hvc_tile.o obj-$(CONFIG_HVC_DCC) += hvc_dcc.o -obj-$(CONFIG_HVC_BEAT) += hvc_beat.o obj-$(CONFIG_HVC_DRIVER) += hvc_console.o obj-$(CONFIG_HVC_IRQ) += hvc_irq.o obj-$(CONFIG_HVC_XEN) += hvc_xen.o diff --git a/drivers/tty/hvc/hvc_beat.c b/drivers/tty/hvc/hvc_beat.c deleted file mode 100644 index 1560d2354..000000000 --- a/drivers/tty/hvc/hvc_beat.c +++ /dev/null @@ -1,134 +0,0 @@ -/* - * Beat hypervisor console driver - * - * (C) Copyright 2006 TOSHIBA CORPORATION - * - * This code is based on drivers/char/hvc_rtas.c: - * (C) Copyright IBM Corporation 2001-2005 - * (C) Copyright Red Hat, Inc. 2005 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/err.h> -#include <linux/string.h> -#include <linux/console.h> -#include <asm/prom.h> -#include <asm/hvconsole.h> -#include <asm/firmware.h> - -#include "hvc_console.h" - -extern int64_t beat_get_term_char(uint64_t, uint64_t *, uint64_t *, uint64_t *); -extern int64_t beat_put_term_char(uint64_t, uint64_t, uint64_t, uint64_t); - -struct hvc_struct *hvc_beat_dev = NULL; - -/* bug: only one queue is available regardless of vtermno */ -static int hvc_beat_get_chars(uint32_t vtermno, char *buf, int cnt) -{ - static unsigned char q[sizeof(unsigned long) * 2] - __attribute__((aligned(sizeof(unsigned long)))); - static int qlen = 0; - u64 got; - -again: - if (qlen) { - if (qlen > cnt) { - memcpy(buf, q, cnt); - qlen -= cnt; - memmove(q + cnt, q, qlen); - return cnt; - } else { /* qlen <= cnt */ - int r; - - memcpy(buf, q, qlen); - r = qlen; - qlen = 0; - return r; - } - } - if (beat_get_term_char(vtermno, &got, - ((u64 *)q), ((u64 *)q) + 1) == 0) { - qlen = got; - goto again; - } - return 0; -} - -static int hvc_beat_put_chars(uint32_t vtermno, const char *buf, int cnt) -{ - unsigned long kb[2]; - int rest, nlen; - - for (rest = cnt; rest > 0; rest -= nlen) { - nlen = (rest > 16) ? 16 : rest; - memcpy(kb, buf, nlen); - beat_put_term_char(vtermno, nlen, kb[0], kb[1]); - buf += nlen; - } - return cnt; -} - -static const struct hv_ops hvc_beat_get_put_ops = { - .get_chars = hvc_beat_get_chars, - .put_chars = hvc_beat_put_chars, -}; - -static int hvc_beat_useit = 1; - -static int hvc_beat_config(char *p) -{ - hvc_beat_useit = simple_strtoul(p, NULL, 0); - return 0; -} - -static int __init hvc_beat_console_init(void) -{ - if (hvc_beat_useit && of_machine_is_compatible("Beat")) { - hvc_instantiate(0, 0, &hvc_beat_get_put_ops); - } - return 0; -} - -/* temp */ -static int __init hvc_beat_init(void) -{ - struct hvc_struct *hp; - - if (!firmware_has_feature(FW_FEATURE_BEAT)) - return -ENODEV; - - hp = hvc_alloc(0, 0, &hvc_beat_get_put_ops, 16); - if (IS_ERR(hp)) - return PTR_ERR(hp); - hvc_beat_dev = hp; - return 0; -} - -static void __exit hvc_beat_exit(void) -{ - if (hvc_beat_dev) - hvc_remove(hvc_beat_dev); -} - -module_init(hvc_beat_init); -module_exit(hvc_beat_exit); - -__setup("hvc_beat=", hvc_beat_config); - -console_initcall(hvc_beat_console_init); diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c index 4fcec1d79..4e9c4cc9e 100644 --- a/drivers/tty/hvc/hvc_console.c +++ b/drivers/tty/hvc/hvc_console.c @@ -319,7 +319,8 @@ static int hvc_install(struct tty_driver *driver, struct tty_struct *tty) int rc; /* Auto increments kref reference if found. */ - if (!(hp = hvc_get_by_index(tty->index))) + hp = hvc_get_by_index(tty->index); + if (!hp) return -ENODEV; tty->driver_data = hp; diff --git a/drivers/tty/hvc/hvc_iucv.c b/drivers/tty/hvc/hvc_iucv.c index f78a87b07..bb809cf36 100644 --- a/drivers/tty/hvc/hvc_iucv.c +++ b/drivers/tty/hvc/hvc_iucv.c @@ -1345,7 +1345,7 @@ static int param_get_vmidfilter(char *buffer, const struct kernel_param *kp) #define param_check_vmidfilter(name, p) __param_check(name, p, void) -static struct kernel_param_ops param_ops_vmidfilter = { +static const struct kernel_param_ops param_ops_vmidfilter = { .set = param_set_vmidfilter, .get = param_get_vmidfilter, }; diff --git a/drivers/tty/hvc/hvc_opal.c b/drivers/tty/hvc/hvc_opal.c index 543b234e7..47b54c6ae 100644 --- a/drivers/tty/hvc/hvc_opal.c +++ b/drivers/tty/hvc/hvc_opal.c @@ -29,6 +29,7 @@ #include <linux/of.h> #include <linux/of_platform.h> #include <linux/export.h> +#include <linux/interrupt.h> #include <asm/hvconsole.h> #include <asm/prom.h> @@ -61,7 +62,6 @@ static struct hvc_opal_priv *hvc_opal_privs[MAX_NR_HVC_CONSOLES]; /* For early boot console */ static struct hvc_opal_priv hvc_opal_boot_priv; static u32 hvc_opal_boot_termno; -static bool hvc_opal_event_registered; static const struct hv_ops hvc_opal_raw_ops = { .get_chars = opal_get_chars, @@ -162,28 +162,15 @@ static const struct hv_ops hvc_opal_hvsi_ops = { .tiocmset = hvc_opal_hvsi_tiocmset, }; -static int hvc_opal_console_event(struct notifier_block *nb, - unsigned long events, void *change) -{ - if (events & OPAL_EVENT_CONSOLE_INPUT) - hvc_kick(); - return 0; -} - -static struct notifier_block hvc_opal_console_nb = { - .notifier_call = hvc_opal_console_event, -}; - static int hvc_opal_probe(struct platform_device *dev) { const struct hv_ops *ops; struct hvc_struct *hp; struct hvc_opal_priv *pv; hv_protocol_t proto; - unsigned int termno, boot = 0; + unsigned int termno, irq, boot = 0; const __be32 *reg; - if (of_device_is_compatible(dev->dev.of_node, "ibm,opal-console-raw")) { proto = HV_PROTOCOL_RAW; ops = &hvc_opal_raw_ops; @@ -227,18 +214,18 @@ static int hvc_opal_probe(struct platform_device *dev) dev->dev.of_node->full_name, boot ? " (boot console)" : ""); - /* We don't do IRQ ... */ - hp = hvc_alloc(termno, 0, ops, MAX_VIO_PUT_CHARS); + irq = opal_event_request(ilog2(OPAL_EVENT_CONSOLE_INPUT)); + if (!irq) { + pr_err("hvc_opal: Unable to map interrupt for device %s\n", + dev->dev.of_node->full_name); + return irq; + } + + hp = hvc_alloc(termno, irq, ops, MAX_VIO_PUT_CHARS); if (IS_ERR(hp)) return PTR_ERR(hp); dev_set_drvdata(&dev->dev, hp); - /* ... but we use OPAL event to kick the console */ - if (!hvc_opal_event_registered) { - opal_notifier_register(&hvc_opal_console_nb); - hvc_opal_event_registered = true; - } - return 0; } diff --git a/drivers/tty/hvc/hvc_tile.c b/drivers/tty/hvc/hvc_tile.c index 3f6cd3102..9da1e842b 100644 --- a/drivers/tty/hvc/hvc_tile.c +++ b/drivers/tty/hvc/hvc_tile.c @@ -51,7 +51,8 @@ int tile_console_write(const char *buf, int count) _SIM_CONTROL_OPERATOR_BITS)); return 0; } else { - return hv_console_write((HV_VirtAddr)buf, count); + /* Translate 0 bytes written to EAGAIN for hvc_console_print. */ + return hv_console_write((HV_VirtAddr)buf, count) ?: -EAGAIN; } } diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c index 7a3d146a5..a9d837f83 100644 --- a/drivers/tty/hvc/hvc_xen.c +++ b/drivers/tty/hvc/hvc_xen.c @@ -302,7 +302,7 @@ static int xen_initial_domain_console_init(void) static void xen_console_update_evtchn(struct xencons_info *info) { if (xen_hvm_domain()) { - uint64_t v; + uint64_t v = 0; int err; err = hvm_get_parameter(HVM_PARAM_CONSOLE_EVTCHN, &v); diff --git a/drivers/tty/hvc/hvcs.c b/drivers/tty/hvc/hvcs.c index 81ff7e1bf..f7ff97c0a 100644 --- a/drivers/tty/hvc/hvcs.c +++ b/drivers/tty/hvc/hvcs.c @@ -1044,8 +1044,8 @@ static int hvcs_enable_device(struct hvcs_struct *hvcsd, uint32_t unit_address, * It is possible that the vty-server was removed between the time that * the conn was registered and now. */ - if (!(rc = request_irq(irq, &hvcs_handle_interrupt, - 0, "ibmhvcs", hvcsd))) { + rc = request_irq(irq, &hvcs_handle_interrupt, 0, "ibmhvcs", hvcsd); + if (!rc) { /* * It is possible the vty-server was removed after the irq was * requested but before we have time to enable interrupts. |