Date: Thu, 13 Jun 2013 22:13:42 +0000 (UTC) From: Marius Strobl <marius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r251715 - head/sys/dev/puc Message-ID: <201306132213.r5DMDgZh035327@svn.freebsd.org>
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Author: marius Date: Thu Jun 13 22:13:41 2013 New Revision: 251715 URL: http://svnweb.freebsd.org/changeset/base/251715 Log: All of Oxford/PLX OX16PCI954, OXm16PCI954 and OXu16PCI954 share the exact same (subsystem) device and vendor IDs. However, the reference design for the OXu16PCI954 uses a 14.7456 MHz clock (as does the EXSYS EX-41098-2 equipped with these), while at least the OX16PCI954 defaults to a 1.8432 MHz one. According to the datasheets of these chips, the only difference in PCI configuration space is that OXu16PCI954 have a revision ID of 1 while the other two are at 0. So employ the latter for determining the default clock rates of this family. Note that one might think that the actual clock could be derived from the Clock Prescaler Register (CPR) of these chips. Unfortunately, this is not that case and its use and content are orthogonal to the frequency of the crystal employed. Tested with an EXSYS EX-41098-2, which identifies and attaches as: pcib4@pci0:19:0:0: class=0x060400 card=0x02dd1014 chip=0x10801b21 rev=0x03 hdr=0x01 vendor = 'ASMedia Technology Inc.' device = 'ASM1083/1085 PCIe to PCI Bridge' class = bridge subclass = PCI-PCI puc0@pci0:20:4:0: class=0x070006 card=0x00001415 chip=0x95011415 rev=0x01 hdr=0x00 vendor = 'Oxford Semiconductor Ltd' device = 'OX16PCI954 (Quad 16950 UART) function 0 (Uart)' class = simple comms subclass = UART puc1@pci0:20:4:1: class=0x068000 card=0x00001415 chip=0x95111415 rev=0x01 hdr=0x00 vendor = 'Oxford Semiconductor Ltd' device = 'OX16PCI954 (Quad 16950 UART) function 1 (8bit bus)' class = bridge puc2@pci0:20:8:0: class=0x070006 card=0x00001415 chip=0x95011415 rev=0x01 hdr=0x00 vendor = 'Oxford Semiconductor Ltd' device = 'OX16PCI954 (Quad 16950 UART) function 0 (Uart)' class = simple comms subclass = UART puc3@pci0:20:8:1: class=0x068000 card=0x00001415 chip=0x95111415 rev=0x01 hdr=0x00 vendor = 'Oxford Semiconductor Ltd' device = 'OX16PCI954 (Quad 16950 UART) function 1 (8bit bus)' class = bridge pci20: <ACPI PCI bus> on pcib4 puc0: <Oxford Semiconductor OX16PCI954 UARTs> port 0x5000-0x501f, 0x5020-0x503f mem 0xc6000000-0xc6000fff,0xc6001000-0xc6001fff irq 16 at device 4.0 on pci20 uart1: <16950 or compatible> at port 1 on puc0 uart2: <16950 or compatible> at port 2 on puc0 uart3: <16950 or compatible> at port 3 on puc0 uart4: <16950 or compatible> at port 4 on puc0 puc1: <Oxford Semiconductor OX9160/OX16PCI954 UARTs (function 1)> port 0x5040-0x505f,0x5060-0x507f mem 0xc6002000-0xc6002fff,0xc6003000-0xc6003fff irq 16 at device 4.1 on pci20 puc2: <Oxford Semiconductor OX16PCI954 UARTs> port 0x5080-0x509f, 0x50a0-0x50bf mem 0xc6004000-0xc6004fff,0xc6005000-0xc6005fff irq 16 at device 8.0 on pci20 uart5: <16950 or compatible> at port 1 on puc2 uart6: <16950 or compatible> at port 2 on puc2 uart7: <16950 or compatible> at port 3 on puc2 uart8: <16950 or compatible> at port 4 on puc2 puc3: <Oxford Semiconductor OX9160/OX16PCI954 UARTs (function 1)> port 0x50c0-0x50df,0x50e0-0x50ff mem 0xc6006000-0xc6006fff,0xc6007000-0xc6007fff irq 16 at device 8.1 on pci20 MFC after: 2 weeks Modified: head/sys/dev/puc/pucdata.c Modified: head/sys/dev/puc/pucdata.c ============================================================================== --- head/sys/dev/puc/pucdata.c Thu Jun 13 22:04:49 2013 (r251714) +++ head/sys/dev/puc/pucdata.c Thu Jun 13 22:13:41 2013 (r251715) @@ -53,6 +53,7 @@ static puc_config_f puc_config_exar; static puc_config_f puc_config_exar_pcie; static puc_config_f puc_config_icbook; static puc_config_f puc_config_moxa; +static puc_config_f puc_config_oxford_pci954; static puc_config_f puc_config_oxford_pcie; static puc_config_f puc_config_quatech; static puc_config_f puc_config_syba; @@ -743,8 +744,9 @@ const struct puc_cfg puc_pci_devices[] = { 0x1415, 0x9501, 0xffff, 0, "Oxford Semiconductor OX16PCI954 UARTs", - DEFAULT_RCLK, + 0, PUC_PORT_4S, 0x10, 0, 8, + .config_function = puc_config_oxford_pci954 }, { 0x1415, 0x950a, 0x131f, 0x2030, @@ -1516,6 +1518,28 @@ puc_config_timedia(struct puc_softc *sc, } static int +puc_config_oxford_pci954(struct puc_softc *sc, enum puc_cfg_cmd cmd, + int port __unused, intptr_t *res) +{ + + switch (cmd) { + case PUC_CFG_GET_CLOCK: + /* + * OXu16PCI954 use a 14.7456 MHz clock by default while + * OX16PCI954 and OXm16PCI954 employ a 1.8432 MHz one. + */ + if (pci_get_revid(sc->sc_dev) == 1) + *res = DEFAULT_RCLK * 8; + else + *res = DEFAULT_RCLK; + return (0); + default: + break; + } + return (ENXIO); +} + +static int puc_config_oxford_pcie(struct puc_softc *sc, enum puc_cfg_cmd cmd, int port, intptr_t *res) {
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