---

yaml
---
r: 259132
b: refs/heads/master
c: 4d2bb3f
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: dd2e356a3dd1fea6d911798044532304c3ef4050
+refs/heads/master: 4d2bb3f5003617cb42b89faefd0009c505c3abd5

trunk/arch/powerpc/Kconfig.debug

@@ -167,6 +167,13 @@ config PPC_EARLY_DEBUG_LPAR
 	  Select this to enable early debugging for a machine with a HVC
 	  console on vterm 0.
 
+config PPC_EARLY_DEBUG_LPAR_HVSI
+	bool "LPAR HVSI Console"
+	depends on PPC_PSERIES
+	help
+	  Select this to enable early debugging for a machine with a HVSI
+	  console on a specified vterm.
+
 config PPC_EARLY_DEBUG_G5
 	bool "Apple G5"
 	depends on PPC_PMAC64
@@ -253,6 +260,14 @@ config PPC_EARLY_DEBUG_WSP
 
 endchoice
 
+config PPC_EARLY_DEBUG_HVSI_VTERMNO
+	hex "vterm number to use with early debug HVSI"
+	depends on PPC_EARLY_DEBUG_LPAR_HVSI
+	default "0x30000000"
+	help
+	  You probably want 0x30000000 for your first serial port and
+	  0x30000001 for your second one
+
 config PPC_EARLY_DEBUG_44x_PHYSLOW
 	hex "Low 32 bits of early debug UART physical address"
 	depends on PPC_EARLY_DEBUG_44x

trunk/arch/powerpc/include/asm/udbg.h

@@ -40,6 +40,7 @@ extern void udbg_adb_init_early(void);
 
 extern void __init udbg_early_init(void);
 extern void __init udbg_init_debug_lpar(void);
+extern void __init udbg_init_debug_lpar_hvsi(void);
 extern void __init udbg_init_pmac_realmode(void);
 extern void __init udbg_init_maple_realmode(void);
 extern void __init udbg_init_pas_realmode(void);

trunk/arch/powerpc/kernel/udbg.c

@@ -31,6 +31,9 @@ void __init udbg_early_init(void)
 #if defined(CONFIG_PPC_EARLY_DEBUG_LPAR)
 	/* For LPAR machines that have an HVC console on vterm 0 */
 	udbg_init_debug_lpar();
+#elif defined(CONFIG_PPC_EARLY_DEBUG_LPAR_HVSI)
+	/* For LPAR machines that have an HVSI console on vterm 0 */
+	udbg_init_debug_lpar_hvsi();
 #elif defined(CONFIG_PPC_EARLY_DEBUG_G5)
 	/* For use on Apple G5 machines */
 	udbg_init_pmac_realmode();

trunk/arch/powerpc/platforms/pseries/lpar.c

@@ -52,195 +52,6 @@ EXPORT_SYMBOL(plpar_hcall_norets);
 
 extern void pSeries_find_serial_port(void);
 
-
-static int vtermno;	/* virtual terminal# for udbg  */
-
-#define __ALIGNED__ __attribute__((__aligned__(sizeof(long))))
-static void udbg_hvsi_putc(char c)
-{
-	/* packet's seqno isn't used anyways */
-	uint8_t packet[] __ALIGNED__ = { 0xff, 5, 0, 0, c };
-	int rc;
-
-	if (c == '\n')
-		udbg_hvsi_putc('\r');
-
-	do {
-		rc = plpar_put_term_char(vtermno, sizeof(packet), packet);
-	} while (rc == H_BUSY);
-}
-
-static long hvsi_udbg_buf_len;
-static uint8_t hvsi_udbg_buf[256];
-
-static int udbg_hvsi_getc_poll(void)
-{
-	unsigned char ch;
-	int rc, i;
-
-	if (hvsi_udbg_buf_len == 0) {
-		rc = plpar_get_term_char(vtermno, &hvsi_udbg_buf_len, hvsi_udbg_buf);
-		if (rc != H_SUCCESS || hvsi_udbg_buf[0] != 0xff) {
-			/* bad read or non-data packet */
-			hvsi_udbg_buf_len = 0;
-		} else {
-			/* remove the packet header */
-			for (i = 4; i < hvsi_udbg_buf_len; i++)
-				hvsi_udbg_buf[i-4] = hvsi_udbg_buf[i];
-			hvsi_udbg_buf_len -= 4;
-		}
-	}
-
-	if (hvsi_udbg_buf_len <= 0 || hvsi_udbg_buf_len > 256) {
-		/* no data ready */
-		hvsi_udbg_buf_len = 0;
-		return -1;
-	}
-
-	ch = hvsi_udbg_buf[0];
-	/* shift remaining data down */
-	for (i = 1; i < hvsi_udbg_buf_len; i++) {
-		hvsi_udbg_buf[i-1] = hvsi_udbg_buf[i];
-	}
-	hvsi_udbg_buf_len--;
-
-	return ch;
-}
-
-static int udbg_hvsi_getc(void)
-{
-	int ch;
-	for (;;) {
-		ch = udbg_hvsi_getc_poll();
-		if (ch == -1) {
-			/* This shouldn't be needed...but... */
-			volatile unsigned long delay;
-			for (delay=0; delay < 2000000; delay++)
-				;
-		} else {
-			return ch;
-		}
-	}
-}
-
-static void udbg_putcLP(char c)
-{
-	char buf[16];
-	unsigned long rc;
-
-	if (c == '\n')
-		udbg_putcLP('\r');
-
-	buf[0] = c;
-	do {
-		rc = plpar_put_term_char(vtermno, 1, buf);
-	} while(rc == H_BUSY);
-}
-
-/* Buffered chars getc */
-static long inbuflen;
-static long inbuf[2];	/* must be 2 longs */
-
-static int udbg_getc_pollLP(void)
-{
-	/* The interface is tricky because it may return up to 16 chars.
-	 * We save them statically for future calls to udbg_getc().
-	 */
-	char ch, *buf = (char *)inbuf;
-	int i;
-	long rc;
-	if (inbuflen == 0) {
-		/* get some more chars. */
-		inbuflen = 0;
-		rc = plpar_get_term_char(vtermno, &inbuflen, buf);
-		if (rc != H_SUCCESS)
-			inbuflen = 0;	/* otherwise inbuflen is garbage */
-	}
-	if (inbuflen <= 0 || inbuflen > 16) {
-		/* Catch error case as well as other oddities (corruption) */
-		inbuflen = 0;
-		return -1;
-	}
-	ch = buf[0];
-	for (i = 1; i < inbuflen; i++)	/* shuffle them down. */
-		buf[i-1] = buf[i];
-	inbuflen--;
-	return ch;
-}
-
-static int udbg_getcLP(void)
-{
-	int ch;
-	for (;;) {
-		ch = udbg_getc_pollLP();
-		if (ch == -1) {
-			/* This shouldn't be needed...but... */
-			volatile unsigned long delay;
-			for (delay=0; delay < 2000000; delay++)
-				;
-		} else {
-			return ch;
-		}
-	}
-}
-
-/* call this from early_init() for a working debug console on
- * vterm capable LPAR machines
- */
-void __init udbg_init_debug_lpar(void)
-{
-	vtermno = 0;
-	udbg_putc = udbg_putcLP;
-	udbg_getc = udbg_getcLP;
-	udbg_getc_poll = udbg_getc_pollLP;
-}
-
-/* returns 0 if couldn't find or use /chosen/stdout as console */
-void __init find_udbg_vterm(void)
-{
-	struct device_node *stdout_node;
-	const u32 *termno;
-	const char *name;
-
-	/* find the boot console from /chosen/stdout */
-	if (!of_chosen)
-		return;
-	name = of_get_property(of_chosen, "linux,stdout-path", NULL);
-	if (name == NULL)
-		return;
-	stdout_node = of_find_node_by_path(name);
-	if (!stdout_node)
-		return;
-	name = of_get_property(stdout_node, "name", NULL);
-	if (!name) {
-		printk(KERN_WARNING "stdout node missing 'name' property!\n");
-		goto out;
-	}
-
-	/* Check if it's a virtual terminal */
-	if (strncmp(name, "vty", 3) != 0)
-		goto out;
-	termno = of_get_property(stdout_node, "reg", NULL);
-	if (termno == NULL)
-		goto out;
-	vtermno = termno[0];
-
-	if (of_device_is_compatible(stdout_node, "hvterm1")) {
-		udbg_putc = udbg_putcLP;
-		udbg_getc = udbg_getcLP;
-		udbg_getc_poll = udbg_getc_pollLP;
-		add_preferred_console("hvc", termno[0] & 0xff, NULL);
-	} else if (of_device_is_compatible(stdout_node, "hvterm-protocol")) {
-		vtermno = termno[0];
-		udbg_putc = udbg_hvsi_putc;
-		udbg_getc = udbg_hvsi_getc;
-		udbg_getc_poll = udbg_hvsi_getc_poll;
-		add_preferred_console("hvsi", termno[0] & 0xff, NULL);
-	}
-out:
-	of_node_put(stdout_node);
-}
-
 void vpa_init(int cpu)
 {
 	int hwcpu = get_hard_smp_processor_id(cpu);

trunk/arch/powerpc/platforms/pseries/pseries.h

@@ -47,7 +47,8 @@ extern void pSeries_final_fixup(void);
 /* Poweron flag used for enabling auto ups restart */
 extern unsigned long rtas_poweron_auto;
 
-extern void find_udbg_vterm(void);
+/* Provided by HVC VIO */
+extern void hvc_vio_init_early(void);
 
 /* Dynamic logical Partitioning/Mobility */
 extern void dlpar_free_cc_nodes(struct device_node *);

trunk/arch/powerpc/platforms/pseries/setup.c

@@ -512,9 +512,10 @@ static void __init pSeries_init_early(void)
 {
 	pr_debug(" -> pSeries_init_early()\n");
 
+#ifdef CONFIG_HVC_CONSOLE
 	if (firmware_has_feature(FW_FEATURE_LPAR))
-		find_udbg_vterm();
-
+		hvc_vio_init_early();
+#endif
 	if (firmware_has_feature(FW_FEATURE_DABR))
 		ppc_md.set_dabr = pseries_set_dabr;
 	else if (firmware_has_feature(FW_FEATURE_XDABR))

trunk/drivers/tty/hvc/Kconfig

@@ -19,6 +19,11 @@ config HVC_CONSOLE
 	  console. This driver allows each pSeries partition to have a console
 	  which is accessed via the HMC.
 
+config HVC_OLD_HVSI
+	bool "Old driver for pSeries serial port (/dev/hvsi*)"
+	depends on HVC_CONSOLE
+	default n
+
 config HVC_ISERIES
 	bool "iSeries Hypervisor Virtual Console support"
 	depends on PPC_ISERIES

trunk/drivers/tty/hvc/Makefile

@@ -1,4 +1,5 @@
-obj-$(CONFIG_HVC_CONSOLE)	+= hvc_vio.o hvsi.o
+obj-$(CONFIG_HVC_CONSOLE)	+= hvc_vio.o
+obj-$(CONFIG_HVC_OLD_HVSI)	+= hvsi.o
 obj-$(CONFIG_HVC_ISERIES)	+= hvc_iseries.o
 obj-$(CONFIG_HVC_RTAS)		+= hvc_rtas.o
 obj-$(CONFIG_HVC_TILE)		+= hvc_tile.o

trunk/drivers/tty/hvc/hvc_console.c

@@ -184,7 +184,7 @@ static struct tty_driver *hvc_console_device(struct console *c, int *index)
 }
 
 static int __init hvc_console_setup(struct console *co, char *options)
-{
+{	
 	if (co->index < 0 || co->index >= MAX_NR_HVC_CONSOLES)
 		return -ENODEV;
 
@@ -745,6 +745,25 @@ static int khvcd(void *unused)
 	return 0;
 }
 
+static int hvc_tiocmget(struct tty_struct *tty)
+{
+	struct hvc_struct *hp = tty->driver_data;
+
+	if (!hp || !hp->ops->tiocmget)
+		return -EINVAL;
+	return hp->ops->tiocmget(hp);
+}
+
+static int hvc_tiocmset(struct tty_struct *tty,
+			unsigned int set, unsigned int clear)
+{
+	struct hvc_struct *hp = tty->driver_data;
+
+	if (!hp || !hp->ops->tiocmset)
+		return -EINVAL;
+	return hp->ops->tiocmset(hp, set, clear);
+}
+
 static const struct tty_operations hvc_ops = {
 	.open = hvc_open,
 	.close = hvc_close,
@@ -753,6 +772,8 @@ static const struct tty_operations hvc_ops = {
 	.unthrottle = hvc_unthrottle,
 	.write_room = hvc_write_room,
 	.chars_in_buffer = hvc_chars_in_buffer,
+	.tiocmget = hvc_tiocmget,
+	.tiocmset = hvc_tiocmset,
 };
 
 struct hvc_struct *hvc_alloc(uint32_t vtermno, int data,

trunk/drivers/tty/hvc/hvc_console.h

@@ -73,6 +73,10 @@ struct hv_ops {
 	int (*notifier_add)(struct hvc_struct *hp, int irq);
 	void (*notifier_del)(struct hvc_struct *hp, int irq);
 	void (*notifier_hangup)(struct hvc_struct *hp, int irq);
+
+	/* tiocmget/set implementation */
+	int (*tiocmget)(struct hvc_struct *hp);
+	int (*tiocmset)(struct hvc_struct *hp, unsigned int set, unsigned int clear);
 };
 
 /* Register a vterm and a slot index for use as a console (console_init) */