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[176.184.47.225]) by smtp.gmail.com with ESMTPSA id w13-20020a5d4b4d000000b003143765e207sm30733wrs.49.2023.07.10.10.51.16 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Mon, 10 Jul 2023 10:51:17 -0700 (PDT) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Peter Maydell , Evgeny Iakovlev , =?utf-8?q?Alex_Benn=C3=A9e?= , Gavin Shan , Paolo Bonzini , qemu-arm@nongnu.org, =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Subject: [PATCH v2 02/11] hw/char/pl011: Display register name in trace events Date: Mon, 10 Jul 2023 19:50:53 +0200 Message-Id: <20230710175102.32429-3-philmd@linaro.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230710175102.32429-1-philmd@linaro.org> References: <20230710175102.32429-1-philmd@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::333; envelope-from=philmd@linaro.org; helo=mail-wm1-x333.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org To avoid knowing the register addresses by heart, display their name along in the trace events. Since the MMIO region is 4K wide (0x1000 bytes), displaying the address with 3 digits is enough, so reduce the address format. Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Alex Bennée Reviewed-by: Richard Henderson --- hw/char/pl011.c | 25 ++++++++++++++++++++++--- hw/char/trace-events | 4 ++-- 2 files changed, 24 insertions(+), 5 deletions(-) diff --git a/hw/char/pl011.c b/hw/char/pl011.c index 73f1a3aea2..c3203e5b41 100644 --- a/hw/char/pl011.c +++ b/hw/char/pl011.c @@ -51,6 +51,7 @@ DeviceState *pl011_create(hwaddr addr, qemu_irq irq, Chardev *chr) #define PL011_INT_TX 0x20 #define PL011_INT_RX 0x10 +/* Flag Register, UARTFR */ #define PL011_FLAG_TXFE 0x80 #define PL011_FLAG_RXFF 0x40 #define PL011_FLAG_TXFF 0x20 @@ -76,6 +77,24 @@ static const unsigned char pl011_id_arm[8] = static const unsigned char pl011_id_luminary[8] = { 0x11, 0x00, 0x18, 0x01, 0x0d, 0xf0, 0x05, 0xb1 }; +static const char *pl011_regname(hwaddr offset) +{ + static const char *const rname[] = { + [0] = "DR", [1] = "RSR", [6] = "FR", [8] = "ILPR", [9] = "IBRD", + [10] = "FBRD", [11] = "LCRH", [12] = "CR", [13] = "IFLS", [14] = "IMSC", + [15] = "RIS", [16] = "MIS", [17] = "ICR", [18] = "DMACR", + }; + unsigned idx = offset >> 2; + + if (idx < ARRAY_SIZE(rname) && rname[idx]) { + return rname[idx]; + } + if (idx >= 0x3f8 && idx <= 0x400) { + return "ID"; + } + return "UNKN"; +} + /* Which bits in the interrupt status matter for each outbound IRQ line ? */ static const uint32_t irqmask[] = { INT_E | INT_MS | INT_RT | INT_TX | INT_RX, /* combined IRQ */ @@ -191,7 +210,7 @@ static uint64_t pl011_read(void *opaque, hwaddr offset, break; } - trace_pl011_read(offset, r); + trace_pl011_read(offset, r, pl011_regname(offset)); return r; } @@ -234,7 +253,7 @@ static void pl011_write(void *opaque, hwaddr offset, PL011State *s = (PL011State *)opaque; unsigned char ch; - trace_pl011_write(offset, value); + trace_pl011_write(offset, value, pl011_regname(offset)); switch (offset >> 2) { case 0: /* UARTDR */ @@ -252,7 +271,7 @@ static void pl011_write(void *opaque, hwaddr offset, case 6: /* UARTFR */ /* Writes to Flag register are ignored. */ break; - case 8: /* UARTUARTILPR */ + case 8: /* UARTILPR */ s->ilpr = value; break; case 9: /* UARTIBRD */ diff --git a/hw/char/trace-events b/hw/char/trace-events index 2ecb36232e..babf4d35ea 100644 --- a/hw/char/trace-events +++ b/hw/char/trace-events @@ -54,9 +54,9 @@ escc_sunmouse_event(int dx, int dy, int buttons_state) "dx=%d dy=%d buttons=0x%0 # pl011.c pl011_irq_state(int level) "irq state %d" -pl011_read(uint32_t addr, uint32_t value) "addr 0x%08x value 0x%08x" +pl011_read(uint32_t addr, uint32_t value, const char *regname) "addr 0x%03x value 0x%08x reg %s" pl011_read_fifo(int read_count) "FIFO read, read_count now %d" -pl011_write(uint32_t addr, uint32_t value) "addr 0x%08x value 0x%08x" +pl011_write(uint32_t addr, uint32_t value, const char *regname) "addr 0x%03x value 0x%08x reg %s" pl011_can_receive(uint32_t lcr, int read_count, int r) "LCR 0x%08x read_count %d returning %d" pl011_put_fifo(uint32_t c, int read_count) "new char 0x%x read_count now %d" pl011_put_fifo_full(void) "FIFO now full, RXFF set"