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Re: adding devices to puc(4)



Hi.

On 2018/05/07 16:38, John Nemeth wrote:
      I'm trying to add an Oxford Semiconductor 4-port serial card
to puc(4).  Using the datasheet, I've gotten to the point where
all four serial ports are probed and attached.  However, I don't
seem to be able to communicate through the ports.  And, there
doesn't seem to be any real documentation on puc(4).  I'm trying
to figure out what the various flags mean.  A URL for the datasheet
is:

https://www.semiconductorstore.com/pdf/newsite/oxford/OXPCIe954_ds.pdf
 It seems that the Legacy mode (e.g. I/O mapped) of OXPCIe952 is removed
from OXPCIe954. It also seems it has no INTx support, right? Are the device's
com registers not 4 byte stride but 1 byte stride?


Here are the patches that I used to get it started:

Index: pcidevs
===================================================================
RCS file: /cvsroot/src/sys/dev/pci/pcidevs,v
retrieving revision 1.1333
diff -u -r1.1333 pcidevs
--- pcidevs	3 May 2018 04:21:10 -0000	1.1333
+++ pcidevs	7 May 2018 07:58:28 -0000
@@ -6280,6 +6280,7 @@
  product OXFORDSEMI OXPCIE952_4	0xc141	OXPCIe952
  product OXFORDSEMI OXPCIE952_5	0xc144	OXPCIe952
  product OXFORDSEMI OXPCIE952_6	0xc145	OXPCIe952
+product OXFORDSEMI OXPCIE952_7	0xc208	OXPCIe952
Not 952 but 954

/* Packet Engines products */
  product PACKETENGINES GNICII	0x0911	G-NIC II Ethernet

Index: pucdata.c
===================================================================
RCS file: /cvsroot/src/sys/dev/pci/pucdata.c,v
retrieving revision 1.101
diff -u -r1.101 pucdata.c
--- pucdata.c	13 Apr 2018 07:57:04 -0000	1.101
+++ pucdata.c	7 May 2018 07:58:53 -0000
@@ -1108,6 +1108,19 @@
  	    },
  	},
+ /* Oxford Semiconductor OXPCIe952 PCIe UARTs */
+	{   "Oxford Semiconductor OXPCIe952 UART",
+	    {	PCI_VENDOR_OXFORDSEMI, PCI_PRODUCT_OXFORDSEMI_OXPCIE952_7,
+		0, 0 },
+	    {	0xffff,	0xffff,	0,	0	},
+	    {
+		{ PUC_PORT_TYPE_COM, PCI_BAR0, 0x1000, COM_FREQ },
+		{ PUC_PORT_TYPE_COM, PCI_BAR0, 0x1200, COM_FREQ },
+		{ PUC_PORT_TYPE_COM, PCI_BAR0, 0x1400, COM_FREQ },
+		{ PUC_PORT_TYPE_COM, PCI_BAR0, 0x1600, COM_FREQ },
+	    },
+	},
+
  	/* Oxford Semiconductor OXmPCI952 PCI UARTs */
  	{   "Oxford Semiconductor OXmPCI952 UARTs",
  	    {	PCI_VENDOR_OXFORDSEMI,	PCI_PRODUCT_OXFORDSEMI_EXSYS_EX41092,

 It seems FreeBSD's puc(4) support OXPCIe954, so it will help
to see FreeBSD's sys/dev/puc/pucdata.c.

 If it's a PCIe addin card, could you tell me the product name?
(I don't say I'll work to support it :))

FYI:
		http://mail-index.netbsd.org/tech-kern/2014/02/09/msg016616.html

	http://mail-index.netbsd.org/tech-kern/2014/01/23/msg016459.html
	(If you're trying to use the device for console, you will modify
	#if 0'd code in the diff.)

sys/dev/ic/com.c has a lof of #ifdefs. Some of them should not be determined
at compile time (e.g. COM16650 and COM_REGMAP), but the change is not easy.
Please someone(TM) do it.

--
-----------------------------------------------
                SAITOH Masanobu (msaitoh%execsw.org@localhost
                                 msaitoh%netbsd.org@localhost)


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