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path: root/drivers/tty/serial/8250/8250_pci.c
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* tty/8250 Add check for pci_ioremap_bar failureMatt Schulte2012-11-211-0/+2
| | | | | | | Add check for pci_ioremap_bar failure Signed-off-by: Matt Schulte <matts@commtech-fastcom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* tty/8250 Add support for Commtech's Fastcom Async-335 and Fastcom Async-PCIe ↵Matt Schulte2012-11-211-0/+163
| | | | | | | | | cards Add support for Commtech's Fastcom Async-335 and Fastcom Async-PCIe cards Signed-off-by: Matt Schulte <matts@commtech-fastcom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: Add initialization of sampling mode and tx/rx triggers to ↵Matt Schulte2012-11-211-0/+4
| | | | | | | | | pci_xr17v35x_setup Add initialization of sampling mode and tx/rx triggers to pci_xr17v35x_setup Signed-off-by: Matt Schulte <matts@commtech-fastcom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Serial: Add support for new devices: Exar's XR17V35x family of multi-port ↵Matt Schulte2012-11-211-0/+96
| | | | | | | | | | PCIe UARTs Add support for new devices: Exar's XR17V35x family of multi-port PCIe UARTs. Signed-off-by: Matt Schulte <matts@commtech-fastcom.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* tty: remove use of __devexitBill Pemberton2012-11-211-6/+6
| | | | | | | | | | | | | | | | | | CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Jiri Slaby <jirislaby@gmail.com> Cc: Alan Cox <alan@linux.intel.com> Acked-by: Tobias Klauser <tklauser@distanz.ch> Cc: Lucas Tavares <lucaskt@linux.vnet.ibm.com> Cc: Daniel Walker <dwalker@fifo99.com> Cc: Bryan Huntsman <bryanh@codeaurora.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Peter Korsgaard <jacmet@sunsite.dk> Cc: Tony Prisk <linux@prisktech.co.nz> Acked-by: David Brown <davidb@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* tty: remove use of __devinitdataBill Pemberton2012-11-211-1/+1
| | | | | | | | | | CONFIG_HOTPLUG is going away as an option so __devinitdata is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Alan Cox <alan@linux.intel.com> Cc: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* tty: remove use of __devinitBill Pemberton2012-11-211-2/+2
| | | | | | | | | | | | | | | | CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Jiri Slaby <jirislaby@gmail.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Lucas Tavares <lucaskt@linux.vnet.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Peter Korsgaard <jacmet@sunsite.dk> Cc: Tony Prisk <linux@prisktech.co.nz> Acked-by: Tobias Klauser <tklauser@distanz.ch> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* tty: serial: remove use of __devexit_pBill Pemberton2012-11-211-25/+25
| | | | | | | | | | | | | | | CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Alan Cox <alan@linux.intel.com> Cc: Lucas Tavares <lucaskt@linux.vnet.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Peter Korsgaard <jacmet@sunsite.dk> Cc: Tony Prisk <linux@prisktech.co.nz> Acked-by: Tobias Klauser <tklauser@distanz.ch> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_pci: use module_pci_driver to simplify the codeWei Yongjun2012-10-301-12/+1
| | | | | | | | | | | Use the module_pci_driver() macro to make the code simpler by eliminating module_init and module_exit calls. dpatch engine is used to auto generate this patch. (https://github.com/weiyj/dpatch) Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* x86: ce4100: allow second UART usageMaxime Bizon2012-10-241-3/+3
| | | | | | | | | | | | The current CE4100 and 8250_pci code have both a limitation preventing the registration and usage of CE4100's second UART. This patch changes the platform code fixing up the UART port to work on a relative UART port base address, as well as the 8250_pci code to make it register 2 UART ports for CE4100 and pass the port index down to all consumers. Signed-off-by: Florian Fainelli <ffainelli@freebox.fr> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge tag 'tty-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/ttyLinus Torvalds2012-10-011-68/+146
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull TTY changes from Greg Kroah-Hartman: "As we skipped the merge window for 3.6-rc1 for the tty tree, everything is now settled down and working properly, so we are ready for 3.7-rc1. Here's the patchset, it's big, but the large changes are removing a firmware file and adding a staging tty driver (it depended on the tty core changes, so it's going through this tree instead of the staging tree.) All of these patches have been in the linux-next tree for a while. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>" Fix up more-or-less trivial conflicts in - drivers/char/pcmcia/synclink_cs.c: tty NULL dereference fix vs tty_port_cts_enabled() helper function - drivers/staging/{Kconfig,Makefile}: add-add conflict (dgrp driver added close to other staging drivers) - drivers/staging/ipack/devices/ipoctal.c: "split ipoctal_channel from iopctal" vs "TTY: use tty_port_register_device" * tag 'tty-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (235 commits) tty/serial: Add kgdb_nmi driver tty/serial/amba-pl011: Quiesce interrupts in poll_get_char tty/serial/amba-pl011: Implement poll_init callback tty/serial/core: Introduce poll_init callback kdb: Turn KGDB_KDB=n stubs into static inlines kdb: Implement disable_nmi command kernel/debug: Mask KGDB NMI upon entry serial: pl011: handle corruption at high clock speeds serial: sccnxp: Make 'default' choice in switch last serial: sccnxp: Remove mask termios caps for SW flow control serial: sccnxp: Report actual baudrate back to core serial: samsung: Add poll_get_char & poll_put_char Powerpc 8xx CPM_UART setting MAXIDL register proportionaly to baud rate Powerpc 8xx CPM_UART maxidl should not depend on fifo size Powerpc 8xx CPM_UART too many interrupts Powerpc 8xx CPM_UART desynchronisation serial: set correct baud_base for EXSYS EX-41092 Dual 16950 serial: omap: fix the reciever line error case 8250: blacklist Winbond CIR port 8250_pnp: do pnp probe before legacy probe ...
| * serial: set correct baud_base for EXSYS EX-41092 Dual 16950Flavio Leitner2012-09-261-2/+7
| | | | | | | | | | | | | | | | | | | | Apparently the same card model has two IDs, so this patch complements the commit 39aced68d664291db3324d0fcf0985ab5626aac2 adding the missing one. Signed-off-by: Flavio Leitner <fbl@redhat.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * 8250_pci: Add additional WCH CHC353 devicesAlan Cox2012-09-051-4/+37
| | | | | | | | | | | | | | | | | | These were reported in bugzilla long ago with a hack patch. Now we have a proper patch for one we can do the rest. Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=25102 Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * parport_serial: Add support for the WCH353 2S/1P multi-IO cardGuainluca Anzolin2012-09-051-8/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To allow parport_serial to handle the card the same PCI ids are blacklisted in 8250_pci.c using the existing software blacklist mechanism. The blacklist array is also renamed because it now covers this new use case. Since the two serial ports are auto-detected as XScale instead of 16550A clones, we also add a quirk to 8250_pci.c to skip autodetection and set the correct port type. Signed-off-by: Gianluca Anzolin <gianluca@sottospazio.it> [Fold in fixes for the uart_8250 change] Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * 8250: add AgeStar AS-PRS2-009Alan Cox2012-08-161-0/+8
| | | | | | | | | | | | Signed-off-by: Alan Cox <alan@linux.intel.com> Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=22502 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * 8250: add support for ASIX devices with a FIFO bugAlan Cox2012-07-121-3/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | Information and a different patch provided by <donald@asix.com.tw>. We do it a little differently to keep the modularity and to avoid playing with RLSI. We add a new uart bug for the parity flaw and set it in the pci matches. If parity check is enabled then we drop the FIFO trigger to 1 as per the Asix reference code. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * 8250: use the 8250 register interface not the legacy oneAlan Cox2012-07-121-46/+46
| | | | | | | | | | | | | | | | The old interface just copies bits over and calls the newer one. In addition we can now pass more information. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * 8250_pci: Remove duplicate struct pciserial_boardShawn Bohrer2012-06-121-9/+1
| | | | | | | | | | | | | | | | pbn_exsys_4055 is the same thing as pbn_b2_4_115200 so replace it with the standard pattern. Signed-off-by: Shawn Bohrer <shawn.bohrer@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | make drivers with pci error handlers constStephen Hemminger2012-09-071-1/+1
|/ | | | | | Covers the rest of the uses of pci error handler. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* 8250_pci: fix pch uart matchingArnaud Patard2012-04-291-0/+18
| | | | | | | | | | | | | | The rules used to make 8250_pci "ignore" the PCH uarts are lacking pci subids entries, preventing it to match and thus is breaking serial port support for theses systems. This has been tested on a nanoETXexpress-TT, which has a specifici uart clock. Tested-by: Erwan Velu <Erwan.Velu@zodiacaerospace.com> [stable@: please apply to 3.0-stable, 3.2-stable and 3.3-stable] Cc: stable <stable@vger.kernel.org> Signed-off-by: Arnaud Patard <apatard@hupstream.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial/8250_pci: fix suspend/resume vs init/exit quirksDan Williams2012-04-181-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit e86ff4a6 "serial/8250_pci: init-quirk msi support for kt serial controller" introduced a regression in suspend/resume by causing msi's to be enabled twice without an intervening disable. 00:16.3 Serial controller: Intel Corporation Patsburg KT Controller (rev 05) (prog-if 02 [16550]) Subsystem: Intel Corporation Device 7270 Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 72 I/O ports at 4080 [size=8] Memory at d1c30000 (32-bit, non-prefetchable) [size=4K] Capabilities: [c8] Power Management version 3 Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Kernel driver in use: serial [ 365.250523] sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:16.3/msi_irqs' [ 365.250525] Modules linked in: nls_utf8 ipv6 uinput sg iTCO_wdt iTCO_vendor_support ioatdma dca i2c_i801 i2c_core wmi sd_mod ahci libahci isci libsas libata scsi_transport_sas [last unloaded: scsi_wait_scan] [ 365.250540] Pid: 9030, comm: kworker/u:1 Tainted: G W 3.3.0-isci-3.0.213+ #1 [ 365.250542] Call Trace: [ 365.250545] [<ffffffff8115e955>] ? sysfs_add_one+0x99/0xad [ 365.250548] [<ffffffff8102db8b>] warn_slowpath_common+0x85/0x9e [ 365.250551] [<ffffffff8102dc96>] warn_slowpath_fmt+0x6e/0x70 [ 365.250555] [<ffffffff8115e8fa>] ? sysfs_add_one+0x3e/0xad [ 365.250558] [<ffffffff8115e8b4>] ? sysfs_pathname+0x3c/0x44 [ 365.250561] [<ffffffff8115e8b4>] ? sysfs_pathname+0x3c/0x44 [ 365.250564] [<ffffffff8115e8b4>] ? sysfs_pathname+0x3c/0x44 [ 365.250567] [<ffffffff8115e8b4>] ? sysfs_pathname+0x3c/0x44 [ 365.250570] [<ffffffff8115e955>] sysfs_add_one+0x99/0xad [ 365.250573] [<ffffffff8115f031>] create_dir+0x72/0xa5 [ 365.250577] [<ffffffff8115f194>] sysfs_create_dir+0xa2/0xbe [ 365.250581] [<ffffffff81262463>] kobject_add_internal+0x126/0x1f8 [ 365.250585] [<ffffffff8126255b>] kset_register+0x26/0x3f [ 365.250588] [<ffffffff8126275a>] kset_create_and_add+0x62/0x7c [ 365.250592] [<ffffffff81293619>] populate_msi_sysfs+0x34/0x103 [ 365.250595] [<ffffffff81293e1c>] pci_enable_msi_block+0x1b3/0x216 [ 365.250599] [<ffffffff81303f7c>] try_enable_msi+0x13/0x17 [ 365.250603] [<ffffffff81303fb3>] pciserial_resume_ports+0x21/0x42 [ 365.250607] [<ffffffff81304041>] pciserial_resume_one+0x50/0x57 [ 365.250610] [<ffffffff81283e1a>] pci_legacy_resume+0x38/0x47 [ 365.250613] [<ffffffff81283e7d>] pci_pm_restore+0x54/0x87 [ 365.250616] [<ffffffff81283e29>] ? pci_legacy_resume+0x47/0x47 [ 365.250619] [<ffffffff8131e9e8>] dpm_run_callback+0x48/0x7b [ 365.250623] [<ffffffff8131f39a>] device_resume+0x342/0x394 [ 365.250626] [<ffffffff8131f5b7>] async_resume+0x21/0x49 That patch has since been reverted, but by inspection it seems that pciserial_suspend_ports() should be invoking .exit() quirks to release resources acquired during .init(). Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial/8250_pci: Clear FIFOs for Intel ME Serial Over Lan device on BISudhakar Mamillapalli2012-04-181-0/+39
| | | | | | | | | | | | | | | | | | | | When using Serial Over Lan (SOL) over the virtual serial port in a Intel management engine (ME) device, on device reset the serial FIFOs need to be cleared to keep the FIFO indexes in-sync between the host and the engine. On a reset the serial device assertes BI, so using that as a cue FIFOs are cleared. So for this purpose a new handle_break callback has been added. One other problem is that the serial registers might temporarily go to 0 on reset of this device. So instead of using the IER register read, if 0 returned use the ier value in uart_8250_port. This is hidden under a custom serial_in. Cc: Nhan H Mai <nhan.h.mai@intel.com> Signed-off-by: Sudhakar Mamillapalli <sudhakar@fb.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial/8250_pci: add a "force background timer" flag and use it for the "kt" ↵Dan Williams2012-04-091-1/+16
| | | | | | | | | | | | | | | | | | | | | | | | serial port Workaround dropped notifications in the iir register. Register reads coincident with new interrupt notifications sometimes result in this device clearing the interrupt event without reporting it in the read data. The serial core already has a heuristic for determining when a device has an untrustworthy iir register. In this case when we apriori know that the iir is faulty use a flag (UPF_BUG_THRE) to bypass the test and force usage of the background timer. [stable: 3.3.x] Acked-by: Alan Cox <alan@linux.intel.com> Cc: stable <stable@vger.kernel.org> Reported-by: Nhan H Mai <nhan.h.mai@intel.com> Reported-by: Sudhakar Mamillapalli <sudhakar@fb.com> Tested-by: Nhan H Mai <nhan.h.mai@intel.com> Tested-by: Sudhakar Mamillapalli <sudhakar@fb.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Revert "serial/8250_pci: setup-quirk workaround for the kt serial controller"Dan Williams2012-04-091-16/+1
| | | | | | | | | | | | | | | | | | | | This reverts commit 448ac154c957c4580531fa0c8f2045816fe2f0e7. The semantic of UPF_IIR_ONCE is only guaranteed to workaround the race condition in the kt serial's iir register if the only source of interrupts is THRE (fifo-empty) events. An modem status event at the wrong time can again cause an iir read to drop the 'empty' status leading to a hang. So, revert this in preparation for using the existing "I don't trust my iir register" workaround in the 8250 core (UART_BUG_THRE). [stable: 3.3.x] Cc: stable <stable@vger.kernel.org> Acked-by: Alan Cox <alan@linux.intel.com> Cc: Sudhakar Mamillapalli <sudhakar@fb.com> Reported-by: Nhan H Mai <nhan.h.mai@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Revert "serial/8250_pci: init-quirk msi support for kt serial controller"Dan Williams2012-04-091-14/+0
| | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit e86ff4a63c9fdd875ba8492577cd1ad2252f525c. This tried to enforce the semantics of one interrupt per iir read of the THRE (transmit-hold empty) status, but events from other sources (particularly modem status) defeat this guarantee. This change also broke 8250_pci suspend/resume support as pciserial_resume_ports() re-runs .init() quirks, but does not run .exit() quirks in pciserial_suspend_ports() leading to reports like: sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:16.3/msi_irqs' ...and a subsequent crash. The mismatch of init/exit at suspend/resume seems like a bug in its own right. [stable: 3.3.x] Cc: stable <stable@vger.kernel.org> Acked-by: Alan Cox <alan@linux.intel.com> Cc: Sudhakar Mamillapalli <sudhakar@fb.com> Reported-by: Nhan H Mai <nhan.h.mai@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: group all the 8250 related code togetherPaul Gortmaker2012-01-241-0/+4223
The drivers/tty/serial dir is already getting rather busy. Relocate the 8250 related drivers to their own subdir to reduce the clutter. Note that sunsu.c is not included in this move -- it is 8250-like hardware, but it does not use any of the existing infrastructure -- and does not depend on SERIAL_8250. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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