From 4f89363b1187ca0cc36ee6aebe0bee550f74288d Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Mon, 23 Sep 2013 12:05:02 +1000 Subject: [PATCH] powerpc/powernv: Fix endian issues in OPAL console and udbg backend Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/opal.h | 8 ++++---- arch/powerpc/platforms/powernv/opal.c | 28 +++++++++++++++------------ 2 files changed, 20 insertions(+), 16 deletions(-) diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index c5cd72833d6..6622ea438f0 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -537,12 +537,12 @@ typedef struct oppanel_line { } oppanel_line_t; /* API functions */ -int64_t opal_console_write(int64_t term_number, int64_t *length, +int64_t opal_console_write(int64_t term_number, __be64 *length, const uint8_t *buffer); -int64_t opal_console_read(int64_t term_number, int64_t *length, +int64_t opal_console_read(int64_t term_number, __be64 *length, uint8_t *buffer); int64_t opal_console_write_buffer_space(int64_t term_number, - int64_t *length); + __be64 *length); int64_t opal_rtc_read(uint32_t *year_month_day, uint64_t *hour_minute_second_millisecond); int64_t opal_rtc_write(uint32_t year_month_day, @@ -552,7 +552,7 @@ int64_t opal_cec_reboot(void); int64_t opal_read_nvram(uint64_t buffer, uint64_t size, uint64_t offset); int64_t opal_write_nvram(uint64_t buffer, uint64_t size, uint64_t offset); int64_t opal_handle_interrupt(uint64_t isn, uint64_t *outstanding_event_mask); -int64_t opal_poll_events(uint64_t *outstanding_event_mask); +int64_t opal_poll_events(__be64 *outstanding_event_mask); int64_t opal_pci_set_hub_tce_memory(uint64_t hub_id, uint64_t tce_mem_addr, uint64_t tce_mem_size); int64_t opal_pci_set_phb_tce_memory(uint64_t phb_id, uint64_t tce_mem_addr, diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index 4ffa75ef284..eb7bf3bf604 100644 --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -164,27 +164,28 @@ void opal_notifier_disable(void) int opal_get_chars(uint32_t vtermno, char *buf, int count) { - s64 len, rc; - u64 evt; + s64 rc; + __be64 evt, len; if (!opal.entry) return -ENODEV; opal_poll_events(&evt); - if ((evt & OPAL_EVENT_CONSOLE_INPUT) == 0) + if ((be64_to_cpu(evt) & OPAL_EVENT_CONSOLE_INPUT) == 0) return 0; - len = count; - rc = opal_console_read(vtermno, &len, buf); + len = cpu_to_be64(count); + rc = opal_console_read(vtermno, &len, buf); if (rc == OPAL_SUCCESS) - return len; + return be64_to_cpu(len); return 0; } int opal_put_chars(uint32_t vtermno, const char *data, int total_len) { int written = 0; + __be64 olen; s64 len, rc; unsigned long flags; - u64 evt; + __be64 evt; if (!opal.entry) return -ENODEV; @@ -199,13 +200,14 @@ int opal_put_chars(uint32_t vtermno, const char *data, int total_len) */ spin_lock_irqsave(&opal_write_lock, flags); if (firmware_has_feature(FW_FEATURE_OPALv2)) { - rc = opal_console_write_buffer_space(vtermno, &len); + rc = opal_console_write_buffer_space(vtermno, &olen); + len = be64_to_cpu(olen); if (rc || len < total_len) { spin_unlock_irqrestore(&opal_write_lock, flags); /* Closed -> drop characters */ if (rc) return total_len; - opal_poll_events(&evt); + opal_poll_events(NULL); return -EAGAIN; } } @@ -216,8 +218,9 @@ int opal_put_chars(uint32_t vtermno, const char *data, int total_len) rc = OPAL_BUSY; while(total_len > 0 && (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT || rc == OPAL_SUCCESS)) { - len = total_len; - rc = opal_console_write(vtermno, &len, data); + olen = cpu_to_be64(total_len); + rc = opal_console_write(vtermno, &olen, data); + len = be64_to_cpu(olen); /* Closed or other error drop */ if (rc != OPAL_SUCCESS && rc != OPAL_BUSY && @@ -237,7 +240,8 @@ int opal_put_chars(uint32_t vtermno, const char *data, int total_len) */ do opal_poll_events(&evt); - while(rc == OPAL_SUCCESS && (evt & OPAL_EVENT_CONSOLE_OUTPUT)); + while(rc == OPAL_SUCCESS && + (be64_to_cpu(evt) & OPAL_EVENT_CONSOLE_OUTPUT)); } spin_unlock_irqrestore(&opal_write_lock, flags); return written; -- 2.34.1