aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/tty/hvc
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/tty/hvc')
-rw-r--r--drivers/tty/hvc/hvc_dcc.c21
-rw-r--r--drivers/tty/hvc/hvc_iucv.c3
-rw-r--r--drivers/tty/hvc/hvc_opal.c4
-rw-r--r--drivers/tty/hvc/hvc_vio.c5
-rw-r--r--drivers/tty/hvc/hvc_xen.c20
-rw-r--r--drivers/tty/hvc/hvsi_lib.c25
6 files changed, 58 insertions, 20 deletions
diff --git a/drivers/tty/hvc/hvc_dcc.c b/drivers/tty/hvc/hvc_dcc.c
index 44fbebab5075..3502a7bbb69e 100644
--- a/drivers/tty/hvc/hvc_dcc.c
+++ b/drivers/tty/hvc/hvc_dcc.c
@@ -86,6 +86,21 @@ static int hvc_dcc_get_chars(uint32_t vt, char *buf, int count)
return i;
}
+static bool hvc_dcc_check(void)
+{
+ unsigned long time = jiffies + (HZ / 10);
+
+ /* Write a test character to check if it is handled */
+ __dcc_putchar('\n');
+
+ while (time_is_after_jiffies(time)) {
+ if (!(__dcc_getstatus() & DCC_STATUS_TX))
+ return true;
+ }
+
+ return false;
+}
+
static const struct hv_ops hvc_dcc_get_put_ops = {
.get_chars = hvc_dcc_get_chars,
.put_chars = hvc_dcc_put_chars,
@@ -93,6 +108,9 @@ static const struct hv_ops hvc_dcc_get_put_ops = {
static int __init hvc_dcc_console_init(void)
{
+ if (!hvc_dcc_check())
+ return -ENODEV;
+
hvc_instantiate(0, 0, &hvc_dcc_get_put_ops);
return 0;
}
@@ -100,6 +118,9 @@ console_initcall(hvc_dcc_console_init);
static int __init hvc_dcc_init(void)
{
+ if (!hvc_dcc_check())
+ return -ENODEV;
+
hvc_alloc(0, 0, &hvc_dcc_get_put_ops, 128);
return 0;
}
diff --git a/drivers/tty/hvc/hvc_iucv.c b/drivers/tty/hvc/hvc_iucv.c
index fd17a9b804b8..db19a38c8c69 100644
--- a/drivers/tty/hvc/hvc_iucv.c
+++ b/drivers/tty/hvc/hvc_iucv.c
@@ -1354,8 +1354,7 @@ out_error_memory:
mempool_destroy(hvc_iucv_mempool);
kmem_cache_destroy(hvc_iucv_buffer_cache);
out_error:
- if (hvc_iucv_filter)
- kfree(hvc_iucv_filter);
+ kfree(hvc_iucv_filter);
hvc_iucv_devices = 0; /* ensure that we do not provide any device */
return rc;
}
diff --git a/drivers/tty/hvc/hvc_opal.c b/drivers/tty/hvc/hvc_opal.c
index cd69b48f6dfd..6496872e2e47 100644
--- a/drivers/tty/hvc/hvc_opal.c
+++ b/drivers/tty/hvc/hvc_opal.c
@@ -329,7 +329,7 @@ static void udbg_init_opal_common(void)
void __init hvc_opal_init_early(void)
{
struct device_node *stdout_node = NULL;
- const u32 *termno;
+ const __be32 *termno;
const char *name = NULL;
const struct hv_ops *ops;
u32 index;
@@ -371,7 +371,7 @@ void __init hvc_opal_init_early(void)
if (!stdout_node)
return;
termno = of_get_property(stdout_node, "reg", NULL);
- index = termno ? *termno : 0;
+ index = termno ? be32_to_cpup(termno) : 0;
if (index >= MAX_NR_HVC_CONSOLES)
return;
hvc_opal_privs[index] = &hvc_opal_boot_priv;
diff --git a/drivers/tty/hvc/hvc_vio.c b/drivers/tty/hvc/hvc_vio.c
index c791b18cdd08..b594abfbf21e 100644
--- a/drivers/tty/hvc/hvc_vio.c
+++ b/drivers/tty/hvc/hvc_vio.c
@@ -48,6 +48,7 @@
#include <asm/prom.h>
#include <asm/hvsi.h>
#include <asm/udbg.h>
+#include <asm/machdep.h>
#include "hvc_console.h"
@@ -457,7 +458,9 @@ void __init hvc_vio_init_early(void)
if (hvterm_priv0.proto == HV_PROTOCOL_HVSI)
goto out;
#endif
- add_preferred_console("hvc", 0, NULL);
+ /* Check whether the user has requested a different console. */
+ if (!strstr(cmd_line, "console="))
+ add_preferred_console("hvc", 0, NULL);
hvc_instantiate(0, 0, ops);
out:
of_node_put(stdout_node);
diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c
index e61c36cbb866..636c9baad7a5 100644
--- a/drivers/tty/hvc/hvc_xen.c
+++ b/drivers/tty/hvc/hvc_xen.c
@@ -183,7 +183,7 @@ static int dom0_write_console(uint32_t vtermno, const char *str, int len)
{
int rc = HYPERVISOR_console_io(CONSOLEIO_write, len, (char *)str);
if (rc < 0)
- return 0;
+ return rc;
return len;
}
@@ -636,12 +636,28 @@ struct console xenboot_console = {
.name = "xenboot",
.write = xenboot_write_console,
.flags = CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME,
+ .index = -1,
};
#endif /* CONFIG_EARLY_PRINTK */
void xen_raw_console_write(const char *str)
{
- dom0_write_console(0, str, strlen(str));
+ ssize_t len = strlen(str);
+ int rc = 0;
+
+ if (xen_domain()) {
+ rc = dom0_write_console(0, str, len);
+#ifdef CONFIG_X86
+ if (rc == -ENOSYS && xen_hvm_domain())
+ goto outb_print;
+
+ } else if (xen_cpuid_base()) {
+ int i;
+outb_print:
+ for (i = 0; i < len; i++)
+ outb(str[i], 0xe9);
+#endif
+ }
}
void xen_raw_printk(const char *fmt, ...)
diff --git a/drivers/tty/hvc/hvsi_lib.c b/drivers/tty/hvc/hvsi_lib.c
index ac2767100df5..347050ea414a 100644
--- a/drivers/tty/hvc/hvsi_lib.c
+++ b/drivers/tty/hvc/hvsi_lib.c
@@ -9,7 +9,7 @@
static int hvsi_send_packet(struct hvsi_priv *pv, struct hvsi_header *packet)
{
- packet->seqno = atomic_inc_return(&pv->seqno);
+ packet->seqno = cpu_to_be16(atomic_inc_return(&pv->seqno));
/* Assumes that always succeeds, works in practice */
return pv->put_chars(pv->termno, (char *)packet, packet->len);
@@ -28,7 +28,7 @@ static void hvsi_start_handshake(struct hvsi_priv *pv)
/* Send version query */
q.hdr.type = VS_QUERY_PACKET_HEADER;
q.hdr.len = sizeof(struct hvsi_query);
- q.verb = VSV_SEND_VERSION_NUMBER;
+ q.verb = cpu_to_be16(VSV_SEND_VERSION_NUMBER);
hvsi_send_packet(pv, &q.hdr);
}
@@ -40,7 +40,7 @@ static int hvsi_send_close(struct hvsi_priv *pv)
ctrl.hdr.type = VS_CONTROL_PACKET_HEADER;
ctrl.hdr.len = sizeof(struct hvsi_control);
- ctrl.verb = VSV_CLOSE_PROTOCOL;
+ ctrl.verb = cpu_to_be16(VSV_CLOSE_PROTOCOL);
return hvsi_send_packet(pv, &ctrl.hdr);
}
@@ -69,14 +69,14 @@ static void hvsi_got_control(struct hvsi_priv *pv)
{
struct hvsi_control *pkt = (struct hvsi_control *)pv->inbuf;
- switch (pkt->verb) {
+ switch (be16_to_cpu(pkt->verb)) {
case VSV_CLOSE_PROTOCOL:
/* We restart the handshaking */
hvsi_start_handshake(pv);
break;
case VSV_MODEM_CTL_UPDATE:
/* Transition of carrier detect */
- hvsi_cd_change(pv, pkt->word & HVSI_TSCD);
+ hvsi_cd_change(pv, be32_to_cpu(pkt->word) & HVSI_TSCD);
break;
}
}
@@ -87,7 +87,7 @@ static void hvsi_got_query(struct hvsi_priv *pv)
struct hvsi_query_response r;
/* We only handle version queries */
- if (pkt->verb != VSV_SEND_VERSION_NUMBER)
+ if (be16_to_cpu(pkt->verb) != VSV_SEND_VERSION_NUMBER)
return;
pr_devel("HVSI@%x: Got version query, sending response...\n",
@@ -96,7 +96,7 @@ static void hvsi_got_query(struct hvsi_priv *pv)
/* Send version response */
r.hdr.type = VS_QUERY_RESPONSE_PACKET_HEADER;
r.hdr.len = sizeof(struct hvsi_query_response);
- r.verb = VSV_SEND_VERSION_NUMBER;
+ r.verb = cpu_to_be16(VSV_SEND_VERSION_NUMBER);
r.u.version = HVSI_VERSION;
r.query_seqno = pkt->hdr.seqno;
hvsi_send_packet(pv, &r.hdr);
@@ -112,7 +112,7 @@ static void hvsi_got_response(struct hvsi_priv *pv)
switch(r->verb) {
case VSV_SEND_MODEM_CTL_STATUS:
- hvsi_cd_change(pv, r->u.mctrl_word & HVSI_TSCD);
+ hvsi_cd_change(pv, be32_to_cpu(r->u.mctrl_word) & HVSI_TSCD);
pv->mctrl_update = 1;
break;
}
@@ -265,8 +265,7 @@ int hvsilib_read_mctrl(struct hvsi_priv *pv)
pv->mctrl_update = 0;
q.hdr.type = VS_QUERY_PACKET_HEADER;
q.hdr.len = sizeof(struct hvsi_query);
- q.hdr.seqno = atomic_inc_return(&pv->seqno);
- q.verb = VSV_SEND_MODEM_CTL_STATUS;
+ q.verb = cpu_to_be16(VSV_SEND_MODEM_CTL_STATUS);
rc = hvsi_send_packet(pv, &q.hdr);
if (rc <= 0) {
pr_devel("HVSI@%x: Error %d...\n", pv->termno, rc);
@@ -304,9 +303,9 @@ int hvsilib_write_mctrl(struct hvsi_priv *pv, int dtr)
ctrl.hdr.type = VS_CONTROL_PACKET_HEADER,
ctrl.hdr.len = sizeof(struct hvsi_control);
- ctrl.verb = VSV_SET_MODEM_CTL;
- ctrl.mask = HVSI_TSDTR;
- ctrl.word = dtr ? HVSI_TSDTR : 0;
+ ctrl.verb = cpu_to_be16(VSV_SET_MODEM_CTL);
+ ctrl.mask = cpu_to_be32(HVSI_TSDTR);
+ ctrl.word = cpu_to_be32(dtr ? HVSI_TSDTR : 0);
return hvsi_send_packet(pv, &ctrl.hdr);
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.