| Message ID | 20171024195139.28179-2-frasse.iglesias@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
W dniu 24.10.2017 o 21:51, Francisco Iglesias pisze: > Add support for continuous read out of the RDSR and READ_FSR status > registers until the chip select is deasserted. This feature is supported > by amongst others 1 or more flashtypes manufactured by Numonyx (Micron), > Windbond, SST, Gigadevice, Eon and Macronix. > > Signed-off-by: Francisco Iglesias <frasse.iglesias@gmail.com> Acked-by: Marcin Krzemiński <mar.krzeminski@gmail.com> > --- > hw/block/m25p80.c | 8 +++++++- > 1 file changed, 7 insertions(+), 1 deletion(-) > > diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c > index a2438b9..2971519 100644 > --- a/hw/block/m25p80.c > +++ b/hw/block/m25p80.c > @@ -423,6 +423,7 @@ typedef struct Flash { > uint8_t data[M25P80_INTERNAL_DATA_BUFFER_SZ]; > uint32_t len; > uint32_t pos; > + bool data_read_loop; > uint8_t needed_bytes; > uint8_t cmd_in_progress; > uint32_t cur_addr; > @@ -983,6 +984,7 @@ static void decode_new_cmd(Flash *s, uint32_t value) > } > s->pos = 0; > s->len = 1; > + s->data_read_loop = true; > s->state = STATE_READING_DATA; > break; > > @@ -993,6 +995,7 @@ static void decode_new_cmd(Flash *s, uint32_t value) > } > s->pos = 0; > s->len = 1; > + s->data_read_loop = true; > s->state = STATE_READING_DATA; > break; > > @@ -1133,6 +1136,7 @@ static int m25p80_cs(SSISlave *ss, bool select) > s->pos = 0; > s->state = STATE_IDLE; > flash_sync_dirty(s, -1); > + s->data_read_loop = false; > } > > DB_PRINT_L(0, "%sselect\n", select ? "de" : ""); > @@ -1198,7 +1202,9 @@ static uint32_t m25p80_transfer8(SSISlave *ss, uint32_t tx) > s->pos++; > if (s->pos == s->len) { > s->pos = 0; > - s->state = STATE_IDLE; > + if (!s->data_read_loop) { > + s->state = STATE_IDLE; > + } > } > break; >
diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c index a2438b9..2971519 100644 --- a/hw/block/m25p80.c +++ b/hw/block/m25p80.c @@ -423,6 +423,7 @@ typedef struct Flash { uint8_t data[M25P80_INTERNAL_DATA_BUFFER_SZ]; uint32_t len; uint32_t pos; + bool data_read_loop; uint8_t needed_bytes; uint8_t cmd_in_progress; uint32_t cur_addr; @@ -983,6 +984,7 @@ static void decode_new_cmd(Flash *s, uint32_t value) } s->pos = 0; s->len = 1; + s->data_read_loop = true; s->state = STATE_READING_DATA; break; @@ -993,6 +995,7 @@ static void decode_new_cmd(Flash *s, uint32_t value) } s->pos = 0; s->len = 1; + s->data_read_loop = true; s->state = STATE_READING_DATA; break; @@ -1133,6 +1136,7 @@ static int m25p80_cs(SSISlave *ss, bool select) s->pos = 0; s->state = STATE_IDLE; flash_sync_dirty(s, -1); + s->data_read_loop = false; } DB_PRINT_L(0, "%sselect\n", select ? "de" : ""); @@ -1198,7 +1202,9 @@ static uint32_t m25p80_transfer8(SSISlave *ss, uint32_t tx) s->pos++; if (s->pos == s->len) { s->pos = 0; - s->state = STATE_IDLE; + if (!s->data_read_loop) { + s->state = STATE_IDLE; + } } break;
Add support for continuous read out of the RDSR and READ_FSR status registers until the chip select is deasserted. This feature is supported by amongst others 1 or more flashtypes manufactured by Numonyx (Micron), Windbond, SST, Gigadevice, Eon and Macronix. Signed-off-by: Francisco Iglesias <frasse.iglesias@gmail.com> --- hw/block/m25p80.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)