machine: add Sirivision S25G1109FP V1.3 (8x2.5G + 1xSFP+)

RTL8373 (non-N) with an RTL8224 quad 2.5G PHY, 2 MB GD25Q16ESIG flash, no PoE.
The wiring is close to the KP-9000-9XHML-X V3.1 (same 8+1 topology, same I2C on
GPIO39/40), but three things differ and were determined on hardware:

- ModAbs is GPIO30 (low with a module inserted, high with an empty cage) and LOS
  is GPIO37 (high without light), not GPIO38.  GPIO38, the ModAbs pin of the
  KP-9000 reference, is tied low on this board, which made the firmware believe a
  module was permanently inserted and retry the I2C read forever.
- The reset button is GPIO54, not GPIO48.  GPIO48 never changes here, so the
  button appeared to do nothing.
- The LED wiring follows the stock port order (pin 3n+m belongs to port n+1,
  LED function m), so the mux table is the chip default except that pin 25 --
  the SFP LED -- is driven by function 0, the only populated function in SET1.
  Per copper port the left LED shows link/activity and the right LED shows
  2.5G, matching the front panel labels.

Verified on hardware: all eight 2.5G ports at 10/100/1000/2500 Mbps, 1G and 10G
SFP modules including DDM data, both LED columns, module insert/remove and the
reset button.

machine/S25G1109FP_V1_3.c

@@ -0,0 +1,53 @@
+#include "machine_defs.h"
+
+// Sirivision S25G1109FP V1.3 (label: SR-S25G2109F): 8x2.5G RJ45 + 1x10G SFP+,
+// 2 MB flash, RTL8373 (non-N) + RTL8224.  Derived from the KP-9000-9XHML-X V3.1
+// definition; every value below was confirmed on hardware, see the device doc
+// in doc/devices/S25G1109FP_V1_3.md.
+__code const struct machine machine = {
+	MACHINE_COMMON_SETTING,
+	.n_sfp = 1,
+	.log_to_phys_port = {1, 2, 3, 4, 5, 6, 7, 8, 9},
+	.phys_to_log_port = {0, 1, 2, 3, 4, 5, 6, 7, 8},
+	.is_sfp = {0, 0, 0, 0, 0, 0, 0, 0, 1},
+	/* ModAbs is GPIO30 (low with a module inserted, high with an empty cage),
+	 * LOS is GPIO37 (high without light).  GPIO38, the ModAbs pin of the
+	 * KP-9000 8+1 reference, is tied low here and never changes, which made the
+	 * firmware believe a module was always present. */
+	.sfp_port[0].pin_detect = GPIO30_ACL_BIT3_EN,
+	.sfp_port[0].pin_los = GPIO37,
+	.sfp_port[0].pin_tx_disable = GPIO_NA,
+	.sfp_port[0].sds = 1,
+	.sfp_port[0].i2c = I2CBUS( GPIO39_I2C_SDA4, GPIO40_I2C_SCL3_MDC1 ),
+	/* Reset button: GPIO54 reads high when idle and low while pressed.
+	 * GPIO48, used by the KP-9000 reference, never changes on this board. */
+	.reset_pin = GPIO54_ACL_BIT2_EN,
+	.high_leds = { .mux = LED_27 | LED_29, .enable = LED_28_SYS | LED_29 },
+	.port_led_set = { 0, 0, 0, 0, 0, 0, 0, 0, 1},
+	.led_sets = {
+		{   /* RJ45: left LED = link/activity, right LED = 2.5G */
+			LEDS_2G5 | LEDS_1G | LEDS_100M | LEDS_10M | LEDS_LINK | LEDS_ACT,
+			/* speed-only conditions leave the LED dark: the LINK bit has to be
+			 * set as well, otherwise the LED controller stays off */
+			LEDS_2G5 | LEDS_LINK,
+			0,
+			0,
+		}, { /* SFP PORT, SINGLE GREEN LED */
+			LEDS_2G5 | LEDS_1G | LEDS_100M | LEDS_10M | LEDS_LINK | LEDS_ACT | LEDS_10G,
+			0,
+			0,
+			0,
+		}},
+	/* 6 bits per LED pin, encoded as (port << 2) | led.  This is the chip
+	 * default for port-ordered wiring (pin 3n+m = port n+1, function m) with
+	 * one change: pin 25 drives the SFP LED with function 0, the only function
+	 * populated in led_sets[1].  See the device doc for the details. */
+	.led_mux_custom = 1,
+	.led_mux = {0x00, 0x01, 0x02, 0x04, 0x05, 0x06, 0x08, 0x09, 0x0a, 0x0c,
+				0x0d, 0x0e, 0x10, 0x11, 0x12, 0x14, 0x15, 0x16, 0x18, 0x19,
+				0x1a, 0x1c, 0x1d, 0x1e, 0x20, 0x20, 0x22, 0x23},
+	/* Factory MAC at flash 0x1FC000, verified in the stock dump.  The stock
+	 * value is a locally administered address, which is rejected, so a
+	 * UUID-derived MAC is used unless a valid one is stored here. */
+	.mac_flash_offset = 0x1FC000,
+};

machine/S25G1109FP_V1_3.h

@@ -0,0 +1,10 @@
+#ifndef _MACHINE_S25G1109FP_V1_3_H_
+#define _MACHINE_S25G1109FP_V1_3_H_
+
+/* machine_name[] in struct machine is 30 bytes -> keep this <= 29 chars */
+/* The product is sold as SR-S25G2109F; S25G1109FP is the PCB silkscreen and
+ * belongs to a different (unmanaged PoE) model that shares this PCB. */
+#define MACHINE_MODEL "Sirivision SR-S25G2109F"
+#define MACHINE_CHIPSET RTL8373
+
+#endif