From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43734) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z0sOD-0003w3-AJ for qemu-devel@nongnu.org; Fri, 05 Jun 2015 10:14:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Z0sOA-0006iu-Vz for qemu-devel@nongnu.org; Fri, 05 Jun 2015 10:14:29 -0400 Received: from mx1.redhat.com ([209.132.183.28]:60130) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z0sOA-0006io-O6 for qemu-devel@nongnu.org; Fri, 05 Jun 2015 10:14:26 -0400 From: Gerd Hoffmann Date: Fri, 5 Jun 2015 16:14:17 +0200 Message-Id: <1433513661-7267-3-git-send-email-kraxel@redhat.com> In-Reply-To: <1433513661-7267-1-git-send-email-kraxel@redhat.com> References: <1433513661-7267-1-git-send-email-kraxel@redhat.com> Subject: [Qemu-devel] [PULL 2/6] fw_cfg: remove support for guest-side data writes List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: "Gabriel L. Somlo" , Gerd Hoffmann From: "Gabriel L. Somlo" data register will be treated as no-ops. This patch also removes the unused host-side API function fw_cfg_add_callback(), which allowed the registration of a callback to be executed each time the guest completed a full overwrite of a given fw_cfg data item. Signed-off-by: Gabriel Somlo Reviewed-by: Laszlo Ersek Signed-off-by: Gerd Hoffmann --- hw/nvram/fw_cfg.c | 33 +-------------------------------- include/hw/nvram/fw_cfg.h | 2 -- trace-events | 1 - 3 files changed, 1 insertion(+), 35 deletions(-) diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c index 68eff77..ed70798 100644 --- a/hw/nvram/fw_cfg.c +++ b/hw/nvram/fw_cfg.c @@ -46,7 +46,6 @@ typedef struct FWCfgEntry { uint32_t len; uint8_t *data; void *callback_opaque; - FWCfgCallback callback; FWCfgReadCallback read_callback; } FWCfgEntry; @@ -232,19 +231,7 @@ static void fw_cfg_reboot(FWCfgState *s) static void fw_cfg_write(FWCfgState *s, uint8_t value) { - int arch = !!(s->cur_entry & FW_CFG_ARCH_LOCAL); - FWCfgEntry *e = &s->entries[arch][s->cur_entry & FW_CFG_ENTRY_MASK]; - - trace_fw_cfg_write(s, value); - - if (s->cur_entry & FW_CFG_WRITE_CHANNEL && e->callback && - s->cur_offset < e->len) { - e->data[s->cur_offset++] = value; - if (s->cur_offset == e->len) { - e->callback(e->callback_opaque, e->data); - s->cur_offset = 0; - } - } + /* nothing, write support removed in QEMU v2.4+ */ } static int fw_cfg_select(FWCfgState *s, uint16_t key) @@ -458,7 +445,6 @@ static void *fw_cfg_modify_bytes_read(FWCfgState *s, uint16_t key, s->entries[arch][key].data = data; s->entries[arch][key].len = len; s->entries[arch][key].callback_opaque = NULL; - s->entries[arch][key].callback = NULL; return ptr; } @@ -502,23 +488,6 @@ void fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value) fw_cfg_add_bytes(s, key, copy, sizeof(value)); } -void fw_cfg_add_callback(FWCfgState *s, uint16_t key, FWCfgCallback callback, - void *callback_opaque, void *data, size_t len) -{ - int arch = !!(key & FW_CFG_ARCH_LOCAL); - - assert(key & FW_CFG_WRITE_CHANNEL); - - key &= FW_CFG_ENTRY_MASK; - - assert(key < FW_CFG_MAX_ENTRY && len <= UINT32_MAX); - - s->entries[arch][key].data = data; - s->entries[arch][key].len = (uint32_t)len; - s->entries[arch][key].callback_opaque = callback_opaque; - s->entries[arch][key].callback = callback; -} - void fw_cfg_add_file_callback(FWCfgState *s, const char *filename, FWCfgReadCallback callback, void *callback_opaque, void *data, size_t len) diff --git a/include/hw/nvram/fw_cfg.h b/include/hw/nvram/fw_cfg.h index 6d8a8ac..b2e10c2 100644 --- a/include/hw/nvram/fw_cfg.h +++ b/include/hw/nvram/fw_cfg.h @@ -69,8 +69,6 @@ void fw_cfg_add_string(FWCfgState *s, uint16_t key, const char *value); void fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value); void fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value); void fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value); -void fw_cfg_add_callback(FWCfgState *s, uint16_t key, FWCfgCallback callback, - void *callback_opaque, void *data, size_t len); void fw_cfg_add_file(FWCfgState *s, const char *filename, void *data, size_t len); void fw_cfg_add_file_callback(FWCfgState *s, const char *filename, diff --git a/trace-events b/trace-events index a589650..27d4ba7 100644 --- a/trace-events +++ b/trace-events @@ -193,7 +193,6 @@ ecc_diag_mem_writeb(uint64_t addr, uint32_t val) "Write diagnostic %"PRId64" = % ecc_diag_mem_readb(uint64_t addr, uint32_t ret) "Read diagnostic %"PRId64"= %02x" # hw/nvram/fw_cfg.c -fw_cfg_write(void *s, uint8_t value) "%p %d" fw_cfg_select(void *s, uint16_t key, int ret) "%p key %d = %d" fw_cfg_read(void *s, uint8_t ret) "%p = %d" fw_cfg_add_file_dupe(void *s, char *name) "%p %s" -- 1.8.3.1