On Sun, Mar 12, 2017 at 11:24:03PM +0100, Linus Walleij wrote: > This adds a host bridge driver for the Faraday Technology > FPPCI100 host bridge, used for Cortina Systems Gemini SoC > (SL3516) PCI Host Bridge. > > This code is inspired by the out-of-tree OpenWRT patch and > then extensively rewritten for device tree and using the modern > helpers to cut down and modernize the code to all new PCI > frameworks. A driver exists in U-Boot as well. > > Tested on the ITian Square One SQ201 NAS with the following > result in the boot log (trimmed to relevant parts): > > OF: PCI: host bridge /soc/pci@50000000 ranges: > OF: PCI: IO 0x50000000..0x500fffff -> 0x00000000 > OF: PCI: MEM 0x58000000..0x5fffffff -> 0x58000000 > ftpci100 50000000.pci: PCI host bridge to bus 0000:00 > pci_bus 0000:00: root bus resource [bus 00-ff] > pci_bus 0000:00: root bus resource [io 0x0000-0xfffff] > pci_bus 0000:00: root bus resource [mem 0x58000000-0x5fffffff] > ftpci100 50000000.pci: > DMA MEM1 BASE: 0x0000000000000000 -> 0x0000000007ffffff config 00070000 > ftpci100 50000000.pci: > DMA MEM2 BASE: 0x0000000000000000 -> 0x0000000003ffffff config 00060000 > ftpci100 50000000.pci: > DMA MEM3 BASE: 0x0000000000000000 -> 0x0000000003ffffff config 00060000 > PCI: bus0: Fast back to back transfers disabled > pci 0000:00:00.0: of_irq_parse_pci() failed with rc=-22 > pci 0000:00:0c.0: BAR 0: assigned [mem 0x58000000-0x58007fff] > pci 0000:00:09.2: BAR 0: assigned [mem 0x58008000-0x580080ff] > pci 0000:00:09.0: BAR 4: assigned [io 0x1000-0x101f] > pci 0000:00:09.1: BAR 4: assigned [io 0x1020-0x103f] > pci 0000:00:09.0: enabling device (0140 -> 0141) > pci 0000:00:09.0: HCRESET not completed yet! > pci 0000:00:09.1: enabling device (0140 -> 0141) > pci 0000:00:09.1: HCRESET not completed yet! > pci 0000:00:09.2: enabling device (0140 -> 0142) > rt61pci 0000:00:0c.0: enabling device (0140 -> 0142) > ieee80211 phy0: rt2x00_set_chip: Info - Chipset detected - > rt: 2561, rf: 0003, rev: 000c > ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver > ehci-pci: EHCI PCI platform driver > ehci-pci 0000:00:09.2: EHCI Host Controller > ehci-pci 0000:00:09.2: new USB bus registered, assigned bus number 1 > ehci-pci 0000:00:09.2: irq 125, io mem 0x58008000 > ehci-pci 0000:00:09.2: USB 2.0 started, EHCI 1.00 > hub 1-0:1.0: USB hub found > hub 1-0:1.0: 4 ports detected > uhci_hcd: USB Universal Host Controller Interface driver > uhci_hcd 0000:00:09.0: UHCI Host Controller > uhci_hcd 0000:00:09.0: new USB bus registered, assigned bus number 2 > uhci_hcd 0000:00:09.0: HCRESET not completed yet! > uhci_hcd 0000:00:09.0: irq 123, io base 0x00001000 > hub 2-0:1.0: USB hub found > hub 2-0:1.0: config failed, hub doesn't have any ports! (err -19) > uhci_hcd 0000:00:09.1: UHCI Host Controller > uhci_hcd 0000:00:09.1: new USB bus registered, assigned bus number 3 > uhci_hcd 0000:00:09.1: HCRESET not completed yet! > uhci_hcd 0000:00:09.1: irq 124, io base 0x00001020 > hub 3-0:1.0: USB hub found > hub 3-0:1.0: config failed, hub doesn't have any ports! (err -19) > scsi 0:0:0:0: Direct-Access USB Flash Disk 1.00 PQ: 0 ANSI: 2 > sd 0:0:0:0: [sda] 7900336 512-byte logical blocks: (4.04 GB/3.77 GiB) > sd 0:0:0:0: [sda] Write Protect is off > sd 0:0:0:0: [sda] No Caching mode page found > sd 0:0:0:0: [sda] Assuming drive cache: write through > sda: sda1 sda2 sda3 > sd 0:0:0:0: [sda] Attached SCSI removable disk > ieee80211 phy0: rt2x00lib_request_firmware: Info - > Loading firmware file 'rt2561s.bin' > ieee80211 phy0: rt2x00lib_request_firmware: Info - > Firmware detected - version: 0.8 > IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready > > $ lspci > 00:00.0 Class 0600: 159b:4321 > 00:09.2 Class 0c03: 1106:3104 > 00:09.0 Class 0c03: 1106:3038 > 00:09.1 Class 0c03: 1106:3038 > 00:0c.0 Class 0280: 1814:0301 > > cat /proc/interrupts > CPU0 > 123: 0 PCI 0 Edge uhci_hcd:usb2 > 124: 0 PCI 1 Edge uhci_hcd:usb3 > 125: 159 PCI 2 Edge ehci_hcd:usb1 > 126: 1082 PCI 3 Edge rt61pci > > cat /proc/iomem > 50000000-500000ff : /soc/pci@50000000 > 58000000-5fffffff : Gemini PCI MEM > 58000000-58007fff : 0000:00:0c.0 > 58000000-58007fff : 0000:00:0c.0 > 58008000-580080ff : 0000:00:09.2 > 58008000-580080ff : ehci_hcd > > The EHCI USB hub works fine, I can mount and manage > files and the IRQs just keep ticking up. I can issue > iwlist wlan0 scanning and see all the WLANs here, I don't have > wpa_supplicant so have not tried connecting to them. > > Cc: Janos Laube <janos.dev@xxxxxxxxx> > Cc: Paulius Zaleckas <paulius.zaleckas@xxxxxxxxx> > Cc: Hans Ulli Kroll <ulli.kroll@xxxxxxxxxxxxxx> > Cc: Florian Fainelli <f.fainelli@xxxxxxxxx> > Cc: Feng-Hsin Chiang <john453@xxxxxxxxxxxxxxxx> > Cc: Greentime Hu <green.hu@xxxxxxxxx> > Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Acked-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> I don't know enough to review the DT patch, but you have Rob's ack already. Not sure how you want to merge these; if you want to feed the whole thing via ARM SoC, that's fine with me. Otherwise, let me know if you'd like me to take anything. Noticed one trivial typo below. > + * Special configuration registers directly in the first few words > + * in he I/O space. s/he//
