[PATCH v5 6/8] lib: sbi: Add console_puts() callback in the console device

[Xiang W <wxjstz@126.com>]

? 2023-02-01???? 10:00 +0100?Andrew Jones???
> On Fri, Jan 13, 2023 at 05:11:08PM +0530, Anup Patel wrote:
> > We add console_puts() callback in the console device which allows
> > console drivers (such as semihosting) to implement a specialized
> > way to output character string.
> > 
> > Signed-off-by: Anup Patel <apatel@ventanamicro.com>
> > Reviewed-by: Atish Patra <atishp@rivosinc.com>
> > Reviewed-by: Xiang W <wxjstz@126.com>
> > Reviewed-by: Bin Meng <bmeng@tinylab.org>
> > ---
> > ?include/sbi/sbi_console.h |? 3 +++
> > ?lib/sbi/sbi_console.c???? | 19 ++++++++++++++-----
> > ?2 files changed, 17 insertions(+), 5 deletions(-)
> > 
> > diff --git a/include/sbi/sbi_console.h b/include/sbi/sbi_console.h
> > index 660c239..8e95b9d 100644
> > --- a/include/sbi/sbi_console.h
> > +++ b/include/sbi/sbi_console.h
> > @@ -19,6 +19,9 @@ struct sbi_console_device {
> > ????????/** Write a character to the console output */
> > ????????void (*console_putc)(char ch);
> > ?
> > +???????/** Write a character string to the console output */
> > +???????void (*console_puts)(const char *str, unsigned long len);
We should add a comment here that \r\n needs to be output when \n is output.
Otherwise, the output effect of sbi_nputs will be inconsistent.

Regards,
Xiang W
> > +
> > ????????/** Read a character from the console input */
> > ????????int (*console_getc)(void);
> > ?};
> > diff --git a/lib/sbi/sbi_console.c b/lib/sbi/sbi_console.c
> > index 89d6a49..c1b9f73 100644
> > --- a/lib/sbi/sbi_console.c
> > +++ b/lib/sbi/sbi_console.c
> > @@ -12,6 +12,7 @@
> > ?#include <sbi/sbi_hart.h>
> > ?#include <sbi/sbi_platform.h>
> > ?#include <sbi/sbi_scratch.h>
> > +#include <sbi/sbi_string.h>
> > ?
> > ?static const struct sbi_console_device *console_dev = NULL;
> > ?static spinlock_t console_out_lock??????????? = SPIN_LOCK_INITIALIZER;
> > @@ -44,9 +45,13 @@ void sbi_putc(char ch)
> > ?void sbi_puts(const char *str)
> > ?{
> > ????????spin_lock(&console_out_lock);
> > -???????while (*str) {
> > -???????????????sbi_putc(*str);
> > -???????????????str++;
> > +???????if (console_dev && console_dev->console_puts) {
> > +???????????????console_dev->console_puts(str, sbi_strlen(str));
> > +???????} else {
> > +???????????????while (*str) {
> > +???????????????????????sbi_putc(*str);
> > +???????????????????????str++;
> > +???????????????}
> > ????????}
> > ????????spin_unlock(&console_out_lock);
> > ?}
> > @@ -56,8 +61,12 @@ void sbi_nputs(const char *str, unsigned long len)
> > ????????unsigned long i;
> > ?
> > ????????spin_lock(&console_out_lock);
> > -???????for (i = 0; i < len; i++)
> > -???????????????sbi_putc(str[i]);
> > +???????if (console_dev && console_dev->console_puts) {
> > +???????????????console_dev->console_puts(str, len);
> > +???????} else {
> > +???????????????for (i = 0; i < len; i++)
> > +???????????????????????sbi_putc(str[i]);
> > +???????}
> > ????????spin_unlock(&console_out_lock);
> > ?}
> > ?
> > -- 
> > 2.34.1
> > 
> 
> Reviewed-by: Andrew Jones <ajones@ventanamicro.com>