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BranchCommit messageAuthorAge
archive/unc-master-3.0P-FP: fix BUG_ON releated to priority inheritanceBjoern Brandenburg13 years
archived-2013.1uncachedev: mmap memory that is not cached by CPUsGlenn Elliott12 years
archived-private-masterMerge branch 'wip-2.6.34' into old-private-masterAndrea Bastoni15 years
archived-semi-partMerge branch 'wip-semi-part' of ssh://cvs/cvs/proj/litmus/repo/litmus2010 int...Andrea Bastoni15 years
demoFurther refinementsJonathan Herman14 years
ecrts-pgm-finalMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
ecrts14-pgm-finalMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
gpusync-rtss12Final GPUSync implementation.Glenn Elliott12 years
gpusync/stagingRename IKGLP R2DGLP.Glenn Elliott12 years
linux-tipMerge branch 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/p...Linus Torvalds15 years
litmus2008-patch-seriesadd i386 feather-trace implementationBjoern B. Brandenburg16 years
masterPSN-EDF: use inferred_sporadic_job_release_atBjoern Brandenburg9 years
pgmmake it compileGlenn Elliott12 years
prop/litmus-signalsInfrastructure for Litmus signals.Glenn Elliott13 years
prop/robust-tie-breakFixed bug in edf_higher_prio().Glenn Elliott13 years
stagingFix tracepoint compilation errorFelipe Cerqueira13 years
test9/23/2016Namhoon Kim9 years
tracing-develTest kernel tracing events capabilitiesAndrea Bastoni16 years
v2.6.34-with-arm-patchessmsc911x: Add spinlocks around registers accessCatalin Marinas15 years
v2015.1Add ARM syscall def for get_current_budgetBjoern Brandenburg10 years
wip-2011.2-bbbLitmus core: simplify np-section protocolBjoern B. Brandenburg14 years
wip-2011.2-bbb-traceRefactor sched_trace_log_message() -> debug_trace_log_message()Andrea Bastoni14 years
wip-2012.3-gpuSOBLIV draining support for C-EDF.Glenn Elliott12 years
wip-2012.3-gpu-preportpick up last C-RM fileGlenn Elliott12 years
wip-2012.3-gpu-rtss13Fix critical bug in GPU tracker.Glenn Elliott12 years
wip-2012.3-gpu-sobliv-budget-w-ksharkProper sobliv draining and many bug fixes.Glenn Elliott12 years
wip-aedzl-finalMake it easier to compile AEDZL interfaces in liblitmus.Glenn Elliott15 years
wip-aedzl-revisedAdd sched_trace data for Apative EDZLGlenn Elliott15 years
wip-arbit-deadlineFix compilation bug.Glenn Elliott13 years
wip-aux-tasksDescription of refined aux task inheritance.Glenn Elliott13 years
wip-bbbGSN-EDF & Core: improve debug TRACE'ing for NP sectionsBjoern B. Brandenburg14 years
wip-bbb-prio-donuse correct timestampBjoern B. Brandenburg14 years
wip-better-breakImplement hash-based EDF tie-breaking.Glenn Elliott13 years
wip-binary-heapMake C-EDF work with simplified binheap_deleteGlenn Elliott13 years
wip-budgetAdded support for choices in budget policy enforcement.Glenn Elliott15 years
wip-colorSummarize schedulability with final recordJonathan Herman13 years
wip-color-jlhsched_color: Fixed two bugs causing crashing on experiment restart and a rare...Jonathan Herman13 years
wip-d10-hz1000Enable HZ=1000 on District 10Bjoern B. Brandenburg15 years
wip-default-clusteringFeature: Make default C-EDF clustering compile-time configurable.Glenn Elliott15 years
wip-dissipation-jericksoUpdate from 2.6.36 to 2.6.36.4Jeremy Erickson11 years
wip-dissipation2-jericksoUpdate 2.6.36 to 2.6.36.4Jeremy Erickson11 years
wip-ecrts14-pgmMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
wip-edf-hsblast tested versionJonathan Herman14 years
wip-edf-osLookup table EDF-osJeremy Erickson12 years
wip-edf-tie-breakMerge branch 'wip-edf-tie-break' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus...Glenn Elliott13 years
wip-edzl-critiqueUse hr_timer's active checks instead of having own flag.Glenn Elliott15 years
wip-edzl-finalImplementation of the EDZL scheduler.Glenn Elliott15 years
wip-edzl-revisedClean up comments.Glenn Elliott15 years
wip-eventsAdded support for tracing arbitrary actions.Jonathan Herman15 years
wip-extra-debugDBG: add additional tracingBjoern B. Brandenburg15 years
wip-fix-switch-jericksoAttempt to fix race condition with plugin switchingJeremy Erickson15 years
wip-fix3sched: show length of runqueue clock deactivation in /proc/sched_debugBjoern B. Brandenburg15 years
wip-fmlp-dequeueImprove FMLP queue management.Glenn Elliott14 years
wip-ft-irq-flagFeather-Trace: keep track of interrupt-related interference.Bjoern B. Brandenburg14 years
wip-gpu-cleanupEnable sched_trace log injection from userspaceGlenn Elliott13 years
wip-gpu-interruptsRemove option for threading of all softirqs.Glenn Elliott14 years
wip-gpu-rtas12Generalized GPU cost predictors + EWMA. (untested)Glenn Elliott13 years
wip-gpu-rtss12Final GPUSync implementation.Glenn Elliott13 years
wip-gpu-rtss12-srpexperimental changes to support GPUs under SRPGlenn Elliott13 years
wip-gpusync-mergeCleanup priority tracking for budget enforcement.Glenn Elliott11 years
wip-ikglpMove RSM and IKGLP imp. to own .c filesGlenn Elliott13 years
wip-k-fmlpMerge branch 'mpi-master' into wip-k-fmlpGlenn Elliott14 years
wip-kernel-coloringAdded recolor syscallNamhoon Kim7 years
wip-kernthreadsKludge work-queue processing into klitirqd.Glenn Elliott15 years
wip-klmirqd-to-auxAllow klmirqd threads to be given names.Glenn Elliott13 years
wip-ksharkMerge branch 'mpi-staging' into wip-ksharkJonathan Herman13 years
wip-litmus-3.2Merge commit 'v3.2' into litmus-stagingAndrea Bastoni13 years
wip-litmus2011.2Cleanup: Coding conformance for affinity stuff.Glenn Elliott14 years
wip-litmus3.0-2011.2Feather-Trace: keep track of interrupt-related interference.Bjoern B. Brandenburg14 years
wip-master-2.6.33-rtAvoid deadlock when switching task policy to BACKGROUND (ugly)Andrea Bastoni15 years
wip-mcRemoved ARM-specific hacks which disabled less common mixed-criticality featu...Jonathan Herman12 years
wip-mc-bipasaMC-EDF addedbipasa chattopadhyay13 years
wip-mc-jericksoSplit C/D queuesJeremy Erickson15 years
wip-mc2-cache-slackManually patched mc^2 related codeMing Yang10 years
wip-mcrit-maccosmeticMac Mollison15 years
wip-merge-3.0Prevent Linux to send IPI and queue tasks on remote CPUs.Andrea Bastoni14 years
wip-merge-v3.0Prevent Linux to send IPI and queue tasks on remote CPUs.Andrea Bastoni14 years
wip-migration-affinityNULL affinity dereference in C-EDF.Glenn Elliott14 years
wip-mmap-uncacheshare branch with othersGlenn Elliott13 years
wip-modechangeRTSS 2017 submissionNamhoon Kim8 years
wip-nested-lockingAppears to be working.Bryan Ward12 years
wip-omlp-gedfFirst implementation of G-OMLP.Glenn Elliott15 years
wip-paiSome cleanup of PAIGlenn Elliott14 years
wip-percore-lib9/21/2016Namhoon Kim9 years
wip-performanceCONFIG_DONT_PREEMPT_ON_TIE: Don't preeempt a scheduled task on priority tie.Glenn Elliott14 years
wip-pgmAdd PGM support to C-FLGlenn Elliott12 years
wip-pgm-splitFirst draft of C-FL-splitNamhoon Kim12 years
wip-pm-ovdAdd preemption-and-migration overhead tracing supportAndrea Bastoni15 years
wip-prio-inhP-EDF updated to use the generic pi framework.Glenn Elliott15 years
wip-prioq-dglBUG FIX: Support DGLs with PRIOQ_MUTEXGlenn Elliott13 years
wip-refactored-gedfGeneralizd architecture for GEDF-style scheduelrs to reduce code redundancy.Glenn Elliott15 years
wip-release-master-fixbugfix: release master CPU must signal task was pickedBjoern B. Brandenburg14 years
wip-robust-tie-breakEDF priority tie-breaks.Glenn Elliott13 years
wip-rt-ksharkMove task time accounting into the complete_job method.Jonathan Herman13 years
wip-rtas12-pgmScheduling of PGM jobs.Glenn Elliott13 years
wip-semi-partFix compile error with newer GCCJeremy Erickson12 years
wip-semi-part-edfos-jericksoUse initial CPU set by clientJeremy Erickson12 years
wip-shared-libTODO: Fix condition checks in replicate_page_move_mapping()Namhoon Kim9 years
wip-shared-lib2RTAS 2017 Submission ver.Namhoon Kim9 years
wip-shared-memInitial commit for shared libraryNamhoon Kim9 years
wip-splitting-jericksoFix release behaviorJeremy Erickson13 years
wip-splitting-omlp-jericksoBjoern's Dissertation Code with Priority DonationJeremy Erickson13 years
wip-stage-binheapAn efficient binary heap implementation.Glenn Elliott13 years
wip-sun-portDynamic memory allocation and clean exit for FeatherTraceChristopher Kenna15 years
wip-timer-tracebugfix: C-EDF, clear scheduled field of the correct CPU upon task_exitAndrea Bastoni15 years
wip-tracepointsAdd kernel-style events for sched_trace_XXX() functionsAndrea Bastoni14 years
 
TagDownloadAuthorAge
2015.1commit 8e51b37822...Bjoern Brandenburg10 years
2013.1commit bcaacec1ca...Glenn Elliott12 years
2012.3commit c158b5fbe4...Jonathan Herman13 years
2012.2commit b53c479a0f...Glenn Elliott13 years
2012.1commit 83b11ea1c6...Bjoern B. Brandenburg14 years
rtas12-mc-beta-expcommit 8e236ee20f...Christopher Kenna14 years
2011.1commit d11808b5c6...Christopher Kenna15 years
v2.6.37-rc4commit e8a7e48bb2...Linus Torvalds15 years
v2.6.37-rc3commit 3561d43fd2...Linus Torvalds15 years
v2.6.37-rc2commit e53beacd23...Linus Torvalds15 years
v2.6.37-rc1commit c8ddb2713c...Linus Torvalds15 years
v2.6.36commit f6f94e2ab1...Linus Torvalds15 years
2010.2commit 5c5456402d...Bjoern B. Brandenburg15 years
v2.6.36-rc8commit cd07202cc8...Linus Torvalds15 years
v2.6.36-rc7commit cb655d0f3d...Linus Torvalds15 years
v2.6.36-rc6commit 899611ee7d...Linus Torvalds15 years
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2010.1commit 7c1ff4c544...Andrea Bastoni15 years
v2.6.34commit e40152ee1e...Linus Torvalds15 years
v2.6.33.4commit 4640b4e7d9...Greg Kroah-Hartman15 years
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v2.6.15-rc3commit 624f54be20...Linus Torvalds20 years
v2.6.15-rc2commit 3bedff1d73...Linus Torvalds20 years
v2.6.15-rc1commit cd52d1ee9a...Linus Torvalds20 years
v2.6.14commit 741b2252a5...Linus Torvalds20 years
v2.6.14-rc5commit 93918e9afc...Linus Torvalds20 years
v2.6.14-rc4commit 907a426179...Linus Torvalds20 years
v2.6.14-rc3commit 1c9426e8a5...Linus Torvalds20 years
v2.6.14-rc2commit 676d55ae30...Linus Torvalds20 years
v2.6.14-rc1commit 2f4ba45a75...Linus Torvalds20 years
v2.6.13commit 02b3e4e2d7...Linus Torvalds20 years
v2.6.13-rc7commit 0572e3da3f...Linus Torvalds20 years
v2.6.13-rc6commit 6fc32179de...Linus Torvalds20 years
v2.6.13-rc5commit 9a351e30d7...Linus Torvalds20 years
v2.6.13-rc4commit 6395352334...Linus Torvalds20 years
v2.6.11tree c39ae07f39...
v2.6.11-treetree c39ae07f39...
v2.6.12commit 9ee1c939d1...
v2.6.12-rc2commit 1da177e4c3...
v2.6.12-rc3commit a2755a80f4...
v2.6.12-rc4commit 88d7bd8cb9...
v2.6.12-rc5commit 2a24ab628a...
v2.6.12-rc6commit 7cef5677ef...
v2.6.13-rc1commit 4c91aedb75...
v2.6.13-rc2commit a18bcb7450...
v2.6.13-rc3commit c32511e271...
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-09 22:59:01 -0400
"hl opt">*); static void cy_unthrottle(struct tty_struct *); static void config_setup(struct cyclades_port *); extern void console_print(const char *); #ifdef CYCLOM_SHOW_STATUS static void show_status(int); #endif #ifdef CONFIG_REMOTE_DEBUG static void debug_setup(void); void queueDebugChar(int c); int getDebugChar(void); #define DEBUG_PORT 1 #define DEBUG_LEN 256 typedef struct { int in; int out; unsigned char buf[DEBUG_LEN]; } debugq; debugq debugiq; #endif /* * I have my own version of udelay(), as it is needed when initialising * the chip, before the delay loop has been calibrated. Should probably * reference one of the vmechip2 or pccchip2 counter for an accurate * delay, but this wild guess will do for now. */ void my_udelay(long us) { u_char x; volatile u_char *p = &x; int i; while (us--) for (i = 100; i; i--) x |= *p; } static inline int serial_paranoia_check(struct cyclades_port *info, char *name, const char *routine) { #ifdef SERIAL_PARANOIA_CHECK if (!info) { printk("Warning: null cyclades_port for (%s) in %s\n", name, routine); return 1; } if ((long)info < (long)(&cy_port[0]) || (long)(&cy_port[NR_PORTS]) < (long)info) { printk("Warning: cyclades_port out of range for (%s) in %s\n", name, routine); return 1; } if (info->magic != CYCLADES_MAGIC) { printk("Warning: bad magic number for serial struct (%s) in " "%s\n", name, routine); return 1; } #endif return 0; } /* serial_paranoia_check */ #if 0 /* The following diagnostic routines allow the driver to spew information on the screen, even (especially!) during interrupts. */ void SP(char *data) { unsigned long flags; local_irq_save(flags); console_print(data); local_irq_restore(flags); } char scrn[2]; void CP(char data) { unsigned long flags; local_irq_save(flags); scrn[0] = data; console_print(scrn); local_irq_restore(flags); } /* CP */ void CP1(int data) { (data < 10) ? CP(data + '0') : CP(data + 'A' - 10); } /* CP1 */ void CP2(int data) { CP1((data >> 4) & 0x0f); CP1(data & 0x0f); } /* CP2 */ void CP4(int data) { CP2((data >> 8) & 0xff); CP2(data & 0xff); } /* CP4 */ void CP8(long data) { CP4((data >> 16) & 0xffff); CP4(data & 0xffff); } /* CP8 */ #endif /* This routine waits up to 1000 micro-seconds for the previous command to the Cirrus chip to complete and then issues the new command. An error is returned if the previous command didn't finish within the time limit. */ u_short write_cy_cmd(volatile u_char * base_addr, u_char cmd) { unsigned long flags; volatile int i; local_irq_save(flags); /* Check to see that the previous command has completed */ for (i = 0; i < 100; i++) { if (base_addr[CyCCR] == 0) { break; } my_udelay(10L); } /* if the CCR never cleared, the previous command didn't finish within the "reasonable time" */ if (i == 10) { local_irq_restore(flags); return (-1); } /* Issue the new command */ base_addr[CyCCR] = cmd; local_irq_restore(flags); return (0); } /* write_cy_cmd */ /* cy_start and cy_stop provide software output flow control as a function of XON/XOFF, software CTS, and other such stuff. */ static void cy_stop(struct tty_struct *tty) { struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; int channel; unsigned long flags; #ifdef SERIAL_DEBUG_OTHER printk("cy_stop %s\n", tty->name); /* */ #endif if (serial_paranoia_check(info, tty->name, "cy_stop")) return; channel = info->line; local_irq_save(flags); base_addr[CyCAR] = (u_char) (channel); /* index channel */ base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); local_irq_restore(flags); } /* cy_stop */ static void cy_start(struct tty_struct *tty) { struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; int channel; unsigned long flags; #ifdef SERIAL_DEBUG_OTHER printk("cy_start %s\n", tty->name); /* */ #endif if (serial_paranoia_check(info, tty->name, "cy_start")) return; channel = info->line; local_irq_save(flags); base_addr[CyCAR] = (u_char) (channel); base_addr[CyIER] |= CyTxMpty; local_irq_restore(flags); } /* cy_start */ /* The real interrupt service routines are called whenever the card wants its hand held--chars received, out buffer empty, modem change, etc. */ static irqreturn_t cd2401_rxerr_interrupt(int irq, void *dev_id) { struct tty_struct *tty; struct cyclades_port *info; volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; unsigned char err, rfoc; int channel; char data; /* determine the channel and change to that context */ channel = (u_short) (base_addr[CyLICR] >> 2); info = &cy_port[channel]; info->last_active = jiffies; if ((err = base_addr[CyRISR]) & CyTIMEOUT) { /* This is a receive timeout interrupt, ignore it */ base_addr[CyREOIR] = CyNOTRANS; return IRQ_HANDLED; } /* Read a byte of data if there is any - assume the error * is associated with this character */ if ((rfoc = base_addr[CyRFOC]) != 0) data = base_addr[CyRDR]; else data = 0; /* if there is nowhere to put the data, discard it */ if (info->tty == 0) { base_addr[CyREOIR] = rfoc ? 0 : CyNOTRANS; return IRQ_HANDLED; } else { /* there is an open port for this data */ tty = info->tty; if (err & info->ignore_status_mask) { base_addr[CyREOIR] = rfoc ? 0 : CyNOTRANS; return IRQ_HANDLED; } if (tty_buffer_request_room(tty, 1) != 0) { if (err & info->read_status_mask) { if (err & CyBREAK) { tty_insert_flip_char(tty, data, TTY_BREAK); if (info->flags & ASYNC_SAK) { do_SAK(tty); } } else if (err & CyFRAME) { tty_insert_flip_char(tty, data, TTY_FRAME); } else if (err & CyPARITY) { tty_insert_flip_char(tty, data, TTY_PARITY); } else if (err & CyOVERRUN) { tty_insert_flip_char(tty, 0, TTY_OVERRUN); /* If the flip buffer itself is overflowing, we still loose the next incoming character. */ if (tty_buffer_request_room(tty, 1) != 0) { tty_insert_flip_char(tty, data, TTY_FRAME); } /* These two conditions may imply */ /* a normal read should be done. */ /* else if(data & CyTIMEOUT) */ /* else if(data & CySPECHAR) */ } else { tty_insert_flip_char(tty, 0, TTY_NORMAL); } } else { tty_insert_flip_char(tty, data, TTY_NORMAL); } } else { /* there was a software buffer overrun and nothing could be done about it!!! */ } } tty_schedule_flip(tty); /* end of service */ base_addr[CyREOIR] = rfoc ? 0 : CyNOTRANS; return IRQ_HANDLED; } /* cy_rxerr_interrupt */ static irqreturn_t cd2401_modem_interrupt(int irq, void *dev_id) { struct cyclades_port *info; volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; int channel; int mdm_change; int mdm_status; /* determine the channel and change to that context */ channel = (u_short) (base_addr[CyLICR] >> 2); info = &cy_port[channel]; info->last_active = jiffies; mdm_change = base_addr[CyMISR]; mdm_status = base_addr[CyMSVR1]; if (info->tty == 0) { /* nowhere to put the data, ignore it */ ; } else { if ((mdm_change & CyDCD) && (info->flags & ASYNC_CHECK_CD)) { if (mdm_status & CyDCD) { /* CP('!'); */ wake_up_interruptible(&info->open_wait); } else { /* CP('@'); */ tty_hangup(info->tty); wake_up_interruptible(&info->open_wait); info->flags &= ~ASYNC_NORMAL_ACTIVE; } } if ((mdm_change & CyCTS) && (info->flags & ASYNC_CTS_FLOW)) { if (info->tty->stopped) { if (mdm_status & CyCTS) { /* !!! cy_start isn't used because... */ info->tty->stopped = 0; base_addr[CyIER] |= CyTxMpty; tty_wakeup(info->tty); } } else { if (!(mdm_status & CyCTS)) { /* !!! cy_stop isn't used because... */ info->tty->stopped = 1; base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); } } } if (mdm_status & CyDSR) { } } base_addr[CyMEOIR] = 0; return IRQ_HANDLED; } /* cy_modem_interrupt */ static irqreturn_t cd2401_tx_interrupt(int irq, void *dev_id) { struct cyclades_port *info; volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; int channel; int char_count, saved_cnt; int outch; /* determine the channel and change to that context */ channel = (u_short) (base_addr[CyLICR] >> 2); #ifdef CONFIG_REMOTE_DEBUG if (channel == DEBUG_PORT) { panic("TxInt on debug port!!!"); } #endif info = &cy_port[channel]; /* validate the port number (as configured and open) */ if ((channel < 0) || (NR_PORTS <= channel)) { base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); base_addr[CyTEOIR] = CyNOTRANS; return IRQ_HANDLED; } info->last_active = jiffies; if (info->tty == 0) { base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); base_addr[CyTEOIR] = CyNOTRANS; return IRQ_HANDLED; } /* load the on-chip space available for outbound data */ saved_cnt = char_count = base_addr[CyTFTC]; if (info->x_char) { /* send special char */ outch = info->x_char; base_addr[CyTDR] = outch; char_count--; info->x_char = 0; } if (info->x_break) { /* The Cirrus chip requires the "Embedded Transmit Commands" of start break, delay, and end break sequences to be sent. The duration of the break is given in TICs, which runs at HZ (typically 100) and the PPR runs at 200 Hz, so the delay is duration * 200/HZ, and thus a break can run from 1/100 sec to about 5/4 sec. Need to check these values - RGH 141095. */ base_addr[CyTDR] = 0; /* start break */ base_addr[CyTDR] = 0x81; base_addr[CyTDR] = 0; /* delay a bit */ base_addr[CyTDR] = 0x82; base_addr[CyTDR] = info->x_break * 200 / HZ; base_addr[CyTDR] = 0; /* terminate break */ base_addr[CyTDR] = 0x83; char_count -= 7; info->x_break = 0; } while (char_count > 0) { if (!info->xmit_cnt) { base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); break; } if (info->xmit_buf == 0) { base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); break; } if (info->tty->stopped || info->tty->hw_stopped) { base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); break; } /* Because the Embedded Transmit Commands have been enabled, we must check to see if the escape character, NULL, is being sent. If it is, we must ensure that there is room for it to be doubled in the output stream. Therefore we no longer advance the pointer when the character is fetched, but rather wait until after the check for a NULL output character. (This is necessary because there may not be room for the two chars needed to send a NULL. */ outch = info->xmit_buf[info->xmit_tail]; if (outch) { info->xmit_cnt--; info->xmit_tail = (info->xmit_tail + 1) & (PAGE_SIZE - 1); base_addr[CyTDR] = outch; char_count--; } else { if (char_count > 1) { info->xmit_cnt--; info->xmit_tail = (info->xmit_tail + 1) & (PAGE_SIZE - 1); base_addr[CyTDR] = outch; base_addr[CyTDR] = 0; char_count--; char_count--; } else { break; } } } if (info->xmit_cnt < WAKEUP_CHARS) tty_wakeup(info->tty); base_addr[CyTEOIR] = (char_count != saved_cnt) ? 0 : CyNOTRANS; return IRQ_HANDLED; } /* cy_tx_interrupt */ static irqreturn_t cd2401_rx_interrupt(int irq, void *dev_id) { struct tty_struct *tty; struct cyclades_port *info; volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; int channel; char data; int char_count; int save_cnt; int len; /* determine the channel and change to that context */ channel = (u_short) (base_addr[CyLICR] >> 2); info = &cy_port[channel]; info->last_active = jiffies; save_cnt = char_count = base_addr[CyRFOC]; #ifdef CONFIG_REMOTE_DEBUG if (channel == DEBUG_PORT) { while (char_count--) { data = base_addr[CyRDR]; queueDebugChar(data); } } else #endif /* if there is nowhere to put the data, discard it */ if (info->tty == 0) { while (char_count--) { data = base_addr[CyRDR]; } } else { /* there is an open port for this data */ tty = info->tty; /* load # characters available from the chip */ #ifdef CYCLOM_ENABLE_MONITORING ++info->mon.int_count; info->mon.char_count += char_count; if (char_count > info->mon.char_max) info->mon.char_max = char_count; info->mon.char_last = char_count; #endif len = tty_buffer_request_room(tty, char_count); while (len--) { data = base_addr[CyRDR]; tty_insert_flip_char(tty, data, TTY_NORMAL); #ifdef CYCLOM_16Y_HACK udelay(10L); #endif } tty_schedule_flip(tty); } /* end of service */ base_addr[CyREOIR] = save_cnt ? 0 : CyNOTRANS; return IRQ_HANDLED; } /* cy_rx_interrupt */ /* This is called whenever a port becomes active; interrupts are enabled and DTR & RTS are turned on. */ static int startup(struct cyclades_port *info) { unsigned long flags; volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; int channel; if (info->flags & ASYNC_INITIALIZED) { return 0; } if (!info->type) { if (info->tty) { set_bit(TTY_IO_ERROR, &info->tty->flags); } return 0; } if (!info->xmit_buf) { info->xmit_buf = (unsigned char *)get_zeroed_page(GFP_KERNEL); if (!info->xmit_buf) { return -ENOMEM; } } config_setup(info); channel = info->line; #ifdef SERIAL_DEBUG_OPEN printk("startup channel %d\n", channel); #endif local_irq_save(flags); base_addr[CyCAR] = (u_char) channel; write_cy_cmd(base_addr, CyENB_RCVR | CyENB_XMTR); base_addr[CyCAR] = (u_char) channel; /* !!! Is this needed? */ base_addr[CyMSVR1] = CyRTS; /* CP('S');CP('1'); */ base_addr[CyMSVR2] = CyDTR; #ifdef SERIAL_DEBUG_DTR printk("cyc: %d: raising DTR\n", __LINE__); printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], base_addr[CyMSVR2]); #endif base_addr[CyIER] |= CyRxData; info->flags |= ASYNC_INITIALIZED; if (info->tty) { clear_bit(TTY_IO_ERROR, &info->tty->flags); } info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; local_irq_restore(flags); #ifdef SERIAL_DEBUG_OPEN printk(" done\n"); #endif return 0; } /* startup */ void start_xmit(struct cyclades_port *info) { unsigned long flags; volatile unsigned char *base_addr = (u_char *) BASE_ADDR; int channel; channel = info->line; local_irq_save(flags); base_addr[CyCAR] = channel; base_addr[CyIER] |= CyTxMpty; local_irq_restore(flags); } /* start_xmit */ /* * This routine shuts down a serial port; interrupts are disabled, * and DTR is dropped if the hangup on close termio flag is on. */ static void shutdown(struct cyclades_port *info) { unsigned long flags; volatile unsigned char *base_addr = (u_char *) BASE_ADDR; int channel; if (!(info->flags & ASYNC_INITIALIZED)) { /* CP('$'); */ return; } channel = info->line; #ifdef SERIAL_DEBUG_OPEN printk("shutdown channel %d\n", channel); #endif /* !!! REALLY MUST WAIT FOR LAST CHARACTER TO BE SENT BEFORE DROPPING THE LINE !!! (Perhaps set some flag that is read when XMTY happens.) Other choices are to delay some fixed interval or schedule some later processing. */ local_irq_save(flags); if (info->xmit_buf) { free_page((unsigned long)info->xmit_buf); info->xmit_buf = NULL; } base_addr[CyCAR] = (u_char) channel; if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { base_addr[CyMSVR1] = 0; /* CP('C');CP('1'); */ base_addr[CyMSVR2] = 0; #ifdef SERIAL_DEBUG_DTR printk("cyc: %d: dropping DTR\n", __LINE__); printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], base_addr[CyMSVR2]); #endif } write_cy_cmd(base_addr, CyDIS_RCVR); /* it may be appropriate to clear _XMIT at some later date (after testing)!!! */ if (info->tty) { set_bit(TTY_IO_ERROR, &info->tty->flags); } info->flags &= ~ASYNC_INITIALIZED; local_irq_restore(flags); #ifdef SERIAL_DEBUG_OPEN printk(" done\n"); #endif } /* shutdown */ /* * This routine finds or computes the various line characteristics. */ static void config_setup(struct cyclades_port *info) { unsigned long flags; volatile unsigned char *base_addr = (u_char *) BASE_ADDR; int channel; unsigned cflag; int i; unsigned char ti, need_init_chan = 0; if (!info->tty || !info->tty->termios) { return; } if (info->line == -1) { return; } cflag = info->tty->termios->c_cflag; /* baud rate */ i = cflag & CBAUD; #ifdef CBAUDEX /* Starting with kernel 1.1.65, there is direct support for higher baud rates. The following code supports those changes. The conditional aspect allows this driver to be used for earlier as well as later kernel versions. (The mapping is slightly different from serial.c because there is still the possibility of supporting 75 kbit/sec with the Cyclades board.) */ if (i & CBAUDEX) { if (i == B57600) i = 16; else if (i == B115200) i = 18; #ifdef B78600 else if (i == B78600) i = 17; #endif else info->tty->termios->c_cflag &= ~CBAUDEX; } #endif if (i == 15) { if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) i += 1; if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) i += 3; } /* Don't ever change the speed of the console port. It will * run at the speed specified in bootinfo, or at 19.2K */ /* Actually, it should run at whatever speed 166Bug was using */ /* Note info->timeout isn't used at present */ if (info != serial_console_info) { info->tbpr = baud_bpr[i]; /* Tx BPR */ info->tco = baud_co[i]; /* Tx CO */ info->rbpr = baud_bpr[i]; /* Rx BPR */ info->rco = baud_co[i] >> 5; /* Rx CO */ if (baud_table[i] == 134) { info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + 2; /* get it right for 134.5 baud */ } else if (baud_table[i]) { info->timeout = (info->xmit_fifo_size * HZ * 15 / baud_table[i]) + 2; /* this needs to be propagated into the card info */ } else { info->timeout = 0; } } /* By tradition (is it a standard?) a baud rate of zero implies the line should be/has been closed. A bit later in this routine such a test is performed. */ /* byte size and parity */ info->cor7 = 0; info->cor6 = 0; info->cor5 = 0; info->cor4 = (info->default_threshold ? info->default_threshold : baud_cor4[i]); /* receive threshold */ /* Following two lines added 101295, RGH. */ /* It is obviously wrong to access CyCORx, and not info->corx here, * try and remember to fix it later! */ channel = info->line; base_addr[CyCAR] = (u_char) channel; if (C_CLOCAL(info->tty)) { if (base_addr[CyIER] & CyMdmCh) base_addr[CyIER] &= ~CyMdmCh; /* without modem intr */ /* ignore 1->0 modem transitions */ if (base_addr[CyCOR4] & (CyDSR | CyCTS | CyDCD)) base_addr[CyCOR4] &= ~(CyDSR | CyCTS | CyDCD); /* ignore 0->1 modem transitions */ if (base_addr[CyCOR5] & (CyDSR | CyCTS | CyDCD)) base_addr[CyCOR5] &= ~(CyDSR | CyCTS | CyDCD); } else { if ((base_addr[CyIER] & CyMdmCh) != CyMdmCh) base_addr[CyIER] |= CyMdmCh; /* with modem intr */ /* act on 1->0 modem transitions */ if ((base_addr[CyCOR4] & (CyDSR | CyCTS | CyDCD)) != (CyDSR | CyCTS | CyDCD)) base_addr[CyCOR4] |= CyDSR | CyCTS | CyDCD; /* act on 0->1 modem transitions */ if ((base_addr[CyCOR5] & (CyDSR | CyCTS | CyDCD)) != (CyDSR | CyCTS | CyDCD)) base_addr[CyCOR5] |= CyDSR | CyCTS | CyDCD; } info->cor3 = (cflag & CSTOPB) ? Cy_2_STOP : Cy_1_STOP; info->cor2 = CyETC; switch (cflag & CSIZE) { case CS5: info->cor1 = Cy_5_BITS; break; case CS6: info->cor1 = Cy_6_BITS; break; case CS7: info->cor1 = Cy_7_BITS; break; case CS8: info->cor1 = Cy_8_BITS; break; } if (cflag & PARENB) { if (cflag & PARODD) { info->cor1 |= CyPARITY_O; } else { info->cor1 |= CyPARITY_E; } } else { info->cor1 |= CyPARITY_NONE; } /* CTS flow control flag */ #if 0 /* Don't complcate matters for now! RGH 141095 */ if (cflag & CRTSCTS) { info->flags |= ASYNC_CTS_FLOW; info->cor2 |= CyCtsAE; } else { info->flags &= ~ASYNC_CTS_FLOW; info->cor2 &= ~CyCtsAE; } #endif if (cflag & CLOCAL) info->flags &= ~ASYNC_CHECK_CD; else info->flags |= ASYNC_CHECK_CD; /*********************************************** The hardware option, CyRtsAO, presents RTS when the chip has characters to send. Since most modems use RTS as reverse (inbound) flow control, this option is not used. If inbound flow control is necessary, DTR can be programmed to provide the appropriate signals for use with a non-standard cable. Contact Marcio Saito for details. ***********************************************/ channel = info->line; local_irq_save(flags); base_addr[CyCAR] = (u_char) channel; /* CyCMR set once only in mvme167_init_serial() */ if (base_addr[CyLICR] != channel << 2) base_addr[CyLICR] = channel << 2; if (base_addr[CyLIVR] != 0x5c) base_addr[CyLIVR] = 0x5c; /* tx and rx baud rate */ if (base_addr[CyCOR1] != info->cor1) need_init_chan = 1; if (base_addr[CyTCOR] != info->tco) base_addr[CyTCOR] = info->tco; if (base_addr[CyTBPR] != info->tbpr) base_addr[CyTBPR] = info->tbpr; if (base_addr[CyRCOR] != info->rco) base_addr[CyRCOR] = info->rco; if (base_addr[CyRBPR] != info->rbpr) base_addr[CyRBPR] = info->rbpr; /* set line characteristics according configuration */ if (base_addr[CySCHR1] != START_CHAR(info->tty)) base_addr[CySCHR1] = START_CHAR(info->tty); if (base_addr[CySCHR2] != STOP_CHAR(info->tty)) base_addr[CySCHR2] = STOP_CHAR(info->tty); if (base_addr[CySCRL] != START_CHAR(info->tty)) base_addr[CySCRL] = START_CHAR(info->tty); if (base_addr[CySCRH] != START_CHAR(info->tty)) base_addr[CySCRH] = START_CHAR(info->tty); if (base_addr[CyCOR1] != info->cor1) base_addr[CyCOR1] = info->cor1; if (base_addr[CyCOR2] != info->cor2) base_addr[CyCOR2] = info->cor2; if (base_addr[CyCOR3] != info->cor3) base_addr[CyCOR3] = info->cor3; if (base_addr[CyCOR4] != info->cor4) base_addr[CyCOR4] = info->cor4; if (base_addr[CyCOR5] != info->cor5) base_addr[CyCOR5] = info->cor5; if (base_addr[CyCOR6] != info->cor6) base_addr[CyCOR6] = info->cor6; if (base_addr[CyCOR7] != info->cor7) base_addr[CyCOR7] = info->cor7; if (need_init_chan) write_cy_cmd(base_addr, CyINIT_CHAN); base_addr[CyCAR] = (u_char) channel; /* !!! Is this needed? */ /* 2ms default rx timeout */ ti = info->default_timeout ? info->default_timeout : 0x02; if (base_addr[CyRTPRL] != ti) base_addr[CyRTPRL] = ti; if (base_addr[CyRTPRH] != 0) base_addr[CyRTPRH] = 0; /* Set up RTS here also ????? RGH 141095 */ if (i == 0) { /* baud rate is zero, turn off line */ if ((base_addr[CyMSVR2] & CyDTR) == CyDTR) base_addr[CyMSVR2] = 0; #ifdef SERIAL_DEBUG_DTR printk("cyc: %d: dropping DTR\n", __LINE__); printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], base_addr[CyMSVR2]); #endif } else { if ((base_addr[CyMSVR2] & CyDTR) != CyDTR) base_addr[CyMSVR2] = CyDTR; #ifdef SERIAL_DEBUG_DTR printk("cyc: %d: raising DTR\n", __LINE__); printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], base_addr[CyMSVR2]); #endif } if (info->tty) { clear_bit(TTY_IO_ERROR, &info->tty->flags); } local_irq_restore(flags); } /* config_setup */ static int cy_put_char(struct tty_struct *tty, unsigned char ch) { struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; unsigned long flags; #ifdef SERIAL_DEBUG_IO printk("cy_put_char %s(0x%02x)\n", tty->name, ch); #endif if (serial_paranoia_check(info, tty->name, "cy_put_char")) return 0; if (!info->xmit_buf) return 0; local_irq_save(flags); if (info->xmit_cnt >= PAGE_SIZE - 1) { local_irq_restore(flags); return 0; } info->xmit_buf[info->xmit_head++] = ch; info->xmit_head &= PAGE_SIZE - 1; info->xmit_cnt++; local_irq_restore(flags); return 1; } /* cy_put_char */ static void cy_flush_chars(struct tty_struct *tty) { struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; unsigned long flags; volatile unsigned char *base_addr = (u_char *) BASE_ADDR; int channel; #ifdef SERIAL_DEBUG_IO printk("cy_flush_chars %s\n", tty->name); /* */ #endif if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) return; if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || !info->xmit_buf) return; channel = info->line; local_irq_save(flags); base_addr[CyCAR] = channel; base_addr[CyIER] |= CyTxMpty; local_irq_restore(flags); } /* cy_flush_chars */ /* This routine gets called when tty_write has put something into the write_queue. If the port is not already transmitting stuff, start it off by enabling interrupts. The interrupt service routine will then ensure that the characters are sent. If the port is already active, there is no need to kick it. */ static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) { struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; unsigned long flags; int c, total = 0; #ifdef SERIAL_DEBUG_IO printk("cy_write %s\n", tty->name); /* */ #endif if (serial_paranoia_check(info, tty->name, "cy_write")) { return 0; } if (!info->xmit_buf) { return 0; } while (1) { local_irq_save(flags); c = min_t(int, count, min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1, SERIAL_XMIT_SIZE - info->xmit_head)); if (c <= 0) { local_irq_restore(flags); break; } memcpy(info->xmit_buf + info->xmit_head, buf, c); info->xmit_head = (info->xmit_head + c) & (SERIAL_XMIT_SIZE - 1); info->xmit_cnt += c; local_irq_restore(flags); buf += c; count -= c; total += c; } if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) { start_xmit(info); } return total; } /* cy_write */ static int cy_write_room(struct tty_struct *tty) { struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; int ret; #ifdef SERIAL_DEBUG_IO printk("cy_write_room %s\n", tty->name); /* */ #endif if (serial_paranoia_check(info, tty->name, "cy_write_room")) return 0; ret = PAGE_SIZE - info->xmit_cnt - 1; if (ret < 0) ret = 0; return ret; } /* cy_write_room */ static int cy_chars_in_buffer(struct tty_struct *tty) { struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; #ifdef SERIAL_DEBUG_IO printk("cy_chars_in_buffer %s %d\n", tty->name, info->xmit_cnt); /* */ #endif if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) return 0; return info->xmit_cnt; } /* cy_chars_in_buffer */ static void cy_flush_buffer(struct tty_struct *tty) { struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; unsigned long flags; #ifdef SERIAL_DEBUG_IO printk("cy_flush_buffer %s\n", tty->name); /* */ #endif if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) return; local_irq_save(flags); info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; local_irq_restore(flags); tty_wakeup(tty); } /* cy_flush_buffer */ /* This routine is called by the upper-layer tty layer to signal that incoming characters should be throttled or that the throttle should be released. */ static void cy_throttle(struct tty_struct *tty) { struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; unsigned long flags; volatile unsigned char *base_addr = (u_char *) BASE_ADDR; int channel; #ifdef SERIAL_DEBUG_THROTTLE char buf[64]; printk("throttle %s: %d....\n", tty_name(tty, buf), tty->ldisc.chars_in_buffer(tty)); printk("cy_throttle %s\n", tty->name); #endif if (serial_paranoia_check(info, tty->name, "cy_nthrottle")) { return; } if (I_IXOFF(tty)) { info->x_char = STOP_CHAR(tty); /* Should use the "Send Special Character" feature!!! */ } channel = info->line; local_irq_save(flags); base_addr[CyCAR] = (u_char) channel; base_addr[CyMSVR1] = 0; local_irq_restore(flags); } /* cy_throttle */ static void cy_unthrottle(struct tty_struct *tty) { struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; unsigned long flags; volatile unsigned char *base_addr = (u_char *) BASE_ADDR; int channel; #ifdef SERIAL_DEBUG_THROTTLE char buf[64]; printk("throttle %s: %d....\n", tty_name(tty, buf), tty->ldisc.chars_in_buffer(tty)); printk("cy_unthrottle %s\n", tty->name); #endif if (serial_paranoia_check(info, tty->name, "cy_nthrottle")) { return; } if (I_IXOFF(tty)) { info->x_char = START_CHAR(tty); /* Should use the "Send Special Character" feature!!! */ } channel = info->line; local_irq_save(flags); base_addr[CyCAR] = (u_char) channel; base_addr[CyMSVR1] = CyRTS; local_irq_restore(flags); } /* cy_unthrottle */ static int get_serial_info(struct cyclades_port *info, struct serial_struct __user * retinfo) { struct serial_struct tmp; /* CP('g'); */ if (!retinfo) return -EFAULT; memset(&tmp, 0, sizeof(tmp)); tmp.type = info->type; tmp.line = info->line; tmp.port = info->line; tmp.irq = 0; tmp.flags = info->flags; tmp.baud_base = 0; /*!!! */ tmp.close_delay = info->close_delay; tmp.custom_divisor = 0; /*!!! */ tmp.hub6 = 0; /*!!! */ return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; } /* get_serial_info */ static int set_serial_info(struct cyclades_port *info, struct serial_struct __user * new_info) { struct serial_struct new_serial; struct cyclades_port old_info; /* CP('s'); */ if (!new_info) return -EFAULT; if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) return -EFAULT; old_info = *info; if (!capable(CAP_SYS_ADMIN)) { if ((new_serial.close_delay != info->close_delay) || ((new_serial.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK) != (info->flags & ASYNC_FLAGS & ~ASYNC_USR_MASK))) return -EPERM; info->flags = ((info->flags & ~ASYNC_USR_MASK) | (new_serial.flags & ASYNC_USR_MASK)); goto check_and_exit; } /* * OK, past this point, all the error checking has been done. * At this point, we start making changes..... */ info->flags = ((info->flags & ~ASYNC_FLAGS) | (new_serial.flags & ASYNC_FLAGS)); info->close_delay = new_serial.close_delay; check_and_exit: if (info->flags & ASYNC_INITIALIZED) { config_setup(info); return 0; } return startup(info); } /* set_serial_info */ static int cy_tiocmget(struct tty_struct *tty, struct file *file) { struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; int channel; volatile unsigned char *base_addr = (u_char *) BASE_ADDR; unsigned long flags; unsigned char status; channel = info->line; local_irq_save(flags); base_addr[CyCAR] = (u_char) channel; status = base_addr[CyMSVR1] | base_addr[CyMSVR2]; local_irq_restore(flags); return ((status & CyRTS) ? TIOCM_RTS : 0) | ((status & CyDTR) ? TIOCM_DTR : 0) | ((status & CyDCD) ? TIOCM_CAR : 0) | ((status & CyDSR) ? TIOCM_DSR : 0) | ((status & CyCTS) ? TIOCM_CTS : 0); } /* cy_tiocmget */ static int cy_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear) { struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; int channel; volatile unsigned char *base_addr = (u_char *) BASE_ADDR; unsigned long flags; channel = info->line; if (set & TIOCM_RTS) { local_irq_save(flags); base_addr[CyCAR] = (u_char) channel; base_addr[CyMSVR1] = CyRTS; local_irq_restore(flags); } if (set & TIOCM_DTR) { local_irq_save(flags); base_addr[CyCAR] = (u_char) channel; /* CP('S');CP('2'); */ base_addr[CyMSVR2] = CyDTR; #ifdef SERIAL_DEBUG_DTR printk("cyc: %d: raising DTR\n", __LINE__); printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], base_addr[CyMSVR2]); #endif local_irq_restore(flags); } if (clear & TIOCM_RTS) { local_irq_save(flags); base_addr[CyCAR] = (u_char) channel; base_addr[CyMSVR1] = 0; local_irq_restore(flags); } if (clear & TIOCM_DTR) { local_irq_save(flags); base_addr[CyCAR] = (u_char) channel; /* CP('C');CP('2'); */ base_addr[CyMSVR2] = 0; #ifdef SERIAL_DEBUG_DTR printk("cyc: %d: dropping DTR\n", __LINE__); printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], base_addr[CyMSVR2]); #endif local_irq_restore(flags); } return 0; } /* set_modem_info */ static void send_break(struct cyclades_port *info, int duration) { /* Let the transmit ISR take care of this (since it requires stuffing characters into the output stream). */ info->x_break = duration; if (!info->xmit_cnt) { start_xmit(info); } } /* send_break */ static int get_mon_info(struct cyclades_port *info, struct cyclades_monitor __user * mon) { if (copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor))) return -EFAULT; info->mon.int_count = 0; info->mon.char_count = 0; info->mon.char_max = 0; info->mon.char_last = 0; return 0; } static int set_threshold(struct cyclades_port *info, unsigned long __user * arg) { volatile unsigned char *base_addr = (u_char *) BASE_ADDR; unsigned long value; int channel; if (get_user(value, arg)) return -EFAULT; channel = info->line; info->cor4 &= ~CyREC_FIFO; info->cor4 |= value & CyREC_FIFO; base_addr[CyCOR4] = info->cor4; return 0; } static int get_threshold(struct cyclades_port *info, unsigned long __user * value) { volatile unsigned char *base_addr = (u_char *) BASE_ADDR; int channel; unsigned long tmp; channel = info->line; tmp = base_addr[CyCOR4] & CyREC_FIFO; return put_user(tmp, value); } static int set_default_threshold(struct cyclades_port *info, unsigned long __user * arg) { unsigned long value; if (get_user(value, arg)) return -EFAULT; info->default_threshold = value & 0x0f; return 0; } static int get_default_threshold(struct cyclades_port *info, unsigned long __user * value) { return put_user(info->default_threshold, value); } static int set_timeout(struct cyclades_port *info, unsigned long __user * arg) { volatile unsigned char *base_addr = (u_char *) BASE_ADDR; int channel; unsigned long value; if (get_user(value, arg)) return -EFAULT; channel = info->line; base_addr[CyRTPRL] = value & 0xff; base_addr[CyRTPRH] = (value >> 8) & 0xff; return 0; } static int get_timeout(struct cyclades_port *info, unsigned long __user * value) { volatile unsigned char *base_addr = (u_char *) BASE_ADDR; int channel; unsigned long tmp; channel = info->line; tmp = base_addr[CyRTPRL]; return put_user(tmp, value); } static int set_default_timeout(struct cyclades_port *info, unsigned long value) { info->default_timeout = value & 0xff; return 0; } static int get_default_timeout(struct cyclades_port *info, unsigned long __user * value) { return put_user(info->default_timeout, value); } static int cy_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) { unsigned long val; struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; int ret_val = 0; void __user *argp = (void __user *)arg; #ifdef SERIAL_DEBUG_OTHER printk("cy_ioctl %s, cmd = %x arg = %lx\n", tty->name, cmd, arg); /* */ #endif lock_kernel(); switch (cmd) { case CYGETMON: ret_val = get_mon_info(info, argp); break; case CYGETTHRESH: ret_val = get_threshold(info, argp); break; case CYSETTHRESH: ret_val = set_threshold(info, argp); break; case CYGETDEFTHRESH: ret_val = get_default_threshold(info, argp); break; case CYSETDEFTHRESH: ret_val = set_default_threshold(info, argp); break; case CYGETTIMEOUT: ret_val = get_timeout(info, argp); break; case CYSETTIMEOUT: ret_val = set_timeout(info, argp); break; case CYGETDEFTIMEOUT: ret_val = get_default_timeout(info, argp); break; case CYSETDEFTIMEOUT: ret_val = set_default_timeout(info, (unsigned long)arg); break; case TCSBRK: /* SVID version: non-zero arg --> no break */ ret_val = tty_check_change(tty); if (ret_val) break; tty_wait_until_sent(tty, 0); if (!arg) send_break(info, HZ / 4); /* 1/4 second */ break; case TCSBRKP: /* support for POSIX tcsendbreak() */ ret_val = tty_check_change(tty); if (ret_val) break; tty_wait_until_sent(tty, 0); send_break(info, arg ? arg * (HZ / 10) : HZ / 4); break; /* The following commands are incompletely implemented!!! */ case TIOCGSERIAL: ret_val = get_serial_info(info, argp); break; case TIOCSSERIAL: ret_val = set_serial_info(info, argp); break; default: ret_val = -ENOIOCTLCMD; } unlock_kernel(); #ifdef SERIAL_DEBUG_OTHER printk("cy_ioctl done\n"); #endif return ret_val; } /* cy_ioctl */ static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) { struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; #ifdef SERIAL_DEBUG_OTHER printk("cy_set_termios %s\n", tty->name); #endif if (tty->termios->c_cflag == old_termios->c_cflag) return; config_setup(info); if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) { tty->stopped = 0; cy_start(tty); } #ifdef tytso_patch_94Nov25_1726 if (!(old_termios->c_cflag & CLOCAL) && (tty->termios->c_cflag & CLOCAL)) wake_up_interruptible(&info->open_wait); #endif } /* cy_set_termios */ static void cy_close(struct tty_struct *tty, struct file *filp) { struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; /* CP('C'); */ #ifdef SERIAL_DEBUG_OTHER printk("cy_close %s\n", tty->name); #endif if (!info || serial_paranoia_check(info, tty->name, "cy_close")) { return; } #ifdef SERIAL_DEBUG_OPEN printk("cy_close %s, count = %d\n", tty->name, info->count); #endif if ((tty->count == 1) && (info->count != 1)) { /* * Uh, oh. tty->count is 1, which means that the tty * structure will be freed. Info->count should always * be one in these conditions. If it's greater than * one, we've got real problems, since it means the * serial port won't be shutdown. */ printk("cy_close: bad serial port count; tty->count is 1, " "info->count is %d\n", info->count); info->count = 1; } #ifdef SERIAL_DEBUG_COUNT printk("cyc: %d: decrementing count to %d\n", __LINE__, info->count - 1); #endif if (--info->count < 0) { printk("cy_close: bad serial port count for ttys%d: %d\n", info->line, info->count); #ifdef SERIAL_DEBUG_COUNT printk("cyc: %d: setting count to 0\n", __LINE__); #endif info->count = 0; } if (info->count) return; info->flags |= ASYNC_CLOSING; if (info->flags & ASYNC_INITIALIZED) tty_wait_until_sent(tty, 3000); /* 30 seconds timeout */ shutdown(info); cy_flush_buffer(tty); tty_ldisc_flush(tty); info->tty = NULL; if (info->blocked_open) { if (info->close_delay) { msleep_interruptible(jiffies_to_msecs (info->close_delay)); } wake_up_interruptible(&info->open_wait); } info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); wake_up_interruptible(&info->close_wait); #ifdef SERIAL_DEBUG_OTHER printk("cy_close done\n"); #endif } /* cy_close */ /* * cy_hangup() --- called by tty_hangup() when a hangup is signaled. */ void cy_hangup(struct tty_struct *tty) { struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; #ifdef SERIAL_DEBUG_OTHER printk("cy_hangup %s\n", tty->name); /* */ #endif if (serial_paranoia_check(info, tty->name, "cy_hangup")) return; shutdown(info); #if 0 info->event = 0; info->count = 0; #ifdef SERIAL_DEBUG_COUNT printk("cyc: %d: setting count to 0\n", __LINE__); #endif info->tty = 0; #endif info->flags &= ~ASYNC_NORMAL_ACTIVE; wake_up_interruptible(&info->open_wait); } /* cy_hangup */ /* * ------------------------------------------------------------ * cy_open() and friends * ------------------------------------------------------------ */ static int block_til_ready(struct tty_struct *tty, struct file *filp, struct cyclades_port *info) { DECLARE_WAITQUEUE(wait, current); unsigned long flags; int channel; int retval; volatile u_char *base_addr = (u_char *) BASE_ADDR; /* * If the device is in the middle of being closed, then block * until it's done, and then try again. */ if (info->flags & ASYNC_CLOSING) { interruptible_sleep_on(&info->close_wait); if (info->flags & ASYNC_HUP_NOTIFY) { return -EAGAIN; } else { return -ERESTARTSYS; } } /* * If non-blocking mode is set, then make the check up front * and then exit. */ if (filp->f_flags & O_NONBLOCK) { info->flags |= ASYNC_NORMAL_ACTIVE; return 0; } /* * Block waiting for the carrier detect and the line to become * free (i.e., not in use by the callout). While we are in * this loop, info->count is dropped by one, so that * cy_close() knows when to free things. We restore it upon * exit, either normal or abnormal. */ retval = 0; add_wait_queue(&info->open_wait, &wait); #ifdef SERIAL_DEBUG_OPEN printk("block_til_ready before block: %s, count = %d\n", tty->name, info->count); /**/ #endif info->count--; #ifdef SERIAL_DEBUG_COUNT printk("cyc: %d: decrementing count to %d\n", __LINE__, info->count); #endif info->blocked_open++; channel = info->line; while (1) { local_irq_save(flags); base_addr[CyCAR] = (u_char) channel; base_addr[CyMSVR1] = CyRTS; /* CP('S');CP('4'); */ base_addr[CyMSVR2] = CyDTR; #ifdef SERIAL_DEBUG_DTR printk("cyc: %d: raising DTR\n", __LINE__); printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], base_addr[CyMSVR2]); #endif local_irq_restore(flags); set_current_state(TASK_INTERRUPTIBLE); if (tty_hung_up_p(filp) || !(info->flags & ASYNC_INITIALIZED)) { if (info->flags & ASYNC_HUP_NOTIFY) { retval = -EAGAIN; } else { retval = -ERESTARTSYS; } break; } local_irq_save(flags); base_addr[CyCAR] = (u_char) channel; /* CP('L');CP1(1 && C_CLOCAL(tty)); CP1(1 && (base_addr[CyMSVR1] & CyDCD) ); */ if (!(info->flags & ASYNC_CLOSING) && (C_CLOCAL(tty) || (base_addr[CyMSVR1] & CyDCD))) { local_irq_restore(flags); break; } local_irq_restore(flags); if (signal_pending(current)) { retval = -ERESTARTSYS; break; } #ifdef SERIAL_DEBUG_OPEN printk("block_til_ready blocking: %s, count = %d\n", tty->name, info->count); /**/ #endif schedule(); } __set_current_state(TASK_RUNNING); remove_wait_queue(&info->open_wait, &wait); if (!tty_hung_up_p(filp)) { info->count++; #ifdef SERIAL_DEBUG_COUNT printk("cyc: %d: incrementing count to %d\n", __LINE__, info->count); #endif } info->blocked_open--; #ifdef SERIAL_DEBUG_OPEN printk("block_til_ready after blocking: %s, count = %d\n", tty->name, info->count); /**/ #endif if (retval) return retval; info->flags |= ASYNC_NORMAL_ACTIVE; return 0; } /* block_til_ready */ /* * This routine is called whenever a serial port is opened. It * performs the serial-specific initialization for the tty structure. */ int cy_open(struct tty_struct *tty, struct file *filp) { struct cyclades_port *info; int retval, line; /* CP('O'); */ line = tty->index; if ((line < 0) || (NR_PORTS <= line)) { return -ENODEV; } info = &cy_port[line]; if (info->line < 0) { return -ENODEV; } #ifdef SERIAL_DEBUG_OTHER printk("cy_open %s\n", tty->name); /* */ #endif if (serial_paranoia_check(info, tty->name, "cy_open")) { return -ENODEV; } #ifdef SERIAL_DEBUG_OPEN printk("cy_open %s, count = %d\n", tty->name, info->count); /**/ #endif info->count++; #ifdef SERIAL_DEBUG_COUNT printk("cyc: %d: incrementing count to %d\n", __LINE__, info->count); #endif tty->driver_data = info; info->tty = tty; /* * Start up serial port */ retval = startup(info); if (retval) { return retval; } retval = block_til_ready(tty, filp, info); if (retval) { #ifdef SERIAL_DEBUG_OPEN printk("cy_open returning after block_til_ready with %d\n", retval); #endif return retval; } #ifdef SERIAL_DEBUG_OPEN printk("cy_open done\n"); /**/ #endif return 0; } /* cy_open */ /* * --------------------------------------------------------------------- * serial167_init() and friends * * serial167_init() is called at boot-time to initialize the serial driver. * --------------------------------------------------------------------- */ /* * This routine prints out the appropriate serial driver version * number, and identifies which options were configured into this * driver. */ static void show_version(void) { printk("MVME166/167 cd2401 driver\n"); } /* show_version */ /* initialize chips on card -- return number of valid chips (which is number of ports/4) */ /* * This initialises the hardware to a reasonable state. It should * probe the chip first so as to copy 166-Bug setup as a default for * port 0. It initialises CMR to CyASYNC; that is never done again, so * as to limit the number of CyINIT_CHAN commands in normal running. * * ... I wonder what I should do if this fails ... */ void mvme167_serial_console_setup(int cflag) { volatile unsigned char *base_addr = (u_char *) BASE_ADDR; int ch; u_char spd; u_char rcor, rbpr, badspeed = 0; unsigned long flags; local_irq_save(flags); /* * First probe channel zero of the chip, to see what speed has * been selected. */ base_addr[CyCAR] = 0; rcor = base_addr[CyRCOR] << 5; rbpr = base_addr[CyRBPR]; for (spd = 0; spd < sizeof(baud_bpr); spd++) if (rbpr == baud_bpr[spd] && rcor == baud_co[spd]) break; if (spd >= sizeof(baud_bpr)) { spd = 14; /* 19200 */ badspeed = 1; /* Failed to identify speed */ } initial_console_speed = spd; /* OK, we have chosen a speed, now reset and reinitialise */ my_udelay(20000L); /* Allow time for any active o/p to complete */ if (base_addr[CyCCR] != 0x00) { local_irq_restore(flags); /* printk(" chip is never idle (CCR != 0)\n"); */ return; } base_addr[CyCCR] = CyCHIP_RESET; /* Reset the chip */ my_udelay(1000L); if (base_addr[CyGFRCR] == 0x00) { local_irq_restore(flags); /* printk(" chip is not responding (GFRCR stayed 0)\n"); */ return; } /* * System clock is 20Mhz, divided by 2048, so divide by 10 for a 1.0ms * tick */ base_addr[CyTPR] = 10; base_addr[CyPILR1] = 0x01; /* Interrupt level for modem change */ base_addr[CyPILR2] = 0x02; /* Interrupt level for tx ints */ base_addr[CyPILR3] = 0x03; /* Interrupt level for rx ints */ /* * Attempt to set up all channels to something reasonable, and * bang out a INIT_CHAN command. We should then be able to limit * the ammount of fiddling we have to do in normal running. */ for (ch = 3; ch >= 0; ch--) { base_addr[CyCAR] = (u_char) ch; base_addr[CyIER] = 0; base_addr[CyCMR] = CyASYNC; base_addr[CyLICR] = (u_char) ch << 2; base_addr[CyLIVR] = 0x5c; base_addr[CyTCOR] = baud_co[spd]; base_addr[CyTBPR] = baud_bpr[spd]; base_addr[CyRCOR] = baud_co[spd] >> 5; base_addr[CyRBPR] = baud_bpr[spd]; base_addr[CySCHR1] = 'Q' & 0x1f; base_addr[CySCHR2] = 'X' & 0x1f; base_addr[CySCRL] = 0; base_addr[CySCRH] = 0; base_addr[CyCOR1] = Cy_8_BITS | CyPARITY_NONE; base_addr[CyCOR2] = 0; base_addr[CyCOR3] = Cy_1_STOP; base_addr[CyCOR4] = baud_cor4[spd]; base_addr[CyCOR5] = 0; base_addr[CyCOR6] = 0; base_addr[CyCOR7] = 0; base_addr[CyRTPRL] = 2; base_addr[CyRTPRH] = 0; base_addr[CyMSVR1] = 0; base_addr[CyMSVR2] = 0; write_cy_cmd(base_addr, CyINIT_CHAN | CyDIS_RCVR | CyDIS_XMTR); } /* * Now do specials for channel zero.... */ base_addr[CyMSVR1] = CyRTS; base_addr[CyMSVR2] = CyDTR; base_addr[CyIER] = CyRxData; write_cy_cmd(base_addr, CyENB_RCVR | CyENB_XMTR); local_irq_restore(flags); my_udelay(20000L); /* Let it all settle down */ printk("CD2401 initialised, chip is rev 0x%02x\n", base_addr[CyGFRCR]); if (badspeed) printk (" WARNING: Failed to identify line speed, rcor=%02x,rbpr=%02x\n", rcor >> 5, rbpr); } /* serial_console_init */ static const struct tty_operations cy_ops = { .open = cy_open, .close = cy_close, .write = cy_write, .put_char = cy_put_char, .flush_chars = cy_flush_chars, .write_room = cy_write_room, .chars_in_buffer = cy_chars_in_buffer, .flush_buffer = cy_flush_buffer, .ioctl = cy_ioctl, .throttle = cy_throttle, .unthrottle = cy_unthrottle, .set_termios = cy_set_termios, .stop = cy_stop, .start = cy_start, .hangup = cy_hangup, .tiocmget = cy_tiocmget, .tiocmset = cy_tiocmset, }; /* The serial driver boot-time initialization code! Hardware I/O ports are mapped to character special devices on a first found, first allocated manner. That is, this code searches for Cyclom cards in the system. As each is found, it is probed to discover how many chips (and thus how many ports) are present. These ports are mapped to the tty ports 64 and upward in monotonic fashion. If an 8-port card is replaced with a 16-port card, the port mapping on a following card will shift. This approach is different from what is used in the other serial device driver because the Cyclom is more properly a multiplexer, not just an aggregation of serial ports on one card. If there are more cards with more ports than have been statically allocated above, a warning is printed and the extra ports are ignored. */ static int __init serial167_init(void) { struct cyclades_port *info; int ret = 0; int good_ports = 0; int port_num = 0; int index; int DefSpeed; #ifdef notyet struct sigaction sa; #endif if (!(mvme16x_config & MVME16x_CONFIG_GOT_CD2401)) return 0; cy_serial_driver = alloc_tty_driver(NR_PORTS); if (!cy_serial_driver) return -ENOMEM; #if 0 scrn[1] = '\0'; #endif show_version(); /* Has "console=0,9600n8" been used in bootinfo to change speed? */ if (serial_console_cflag) DefSpeed = serial_console_cflag & 0017; else { DefSpeed = initial_console_speed; serial_console_info = &cy_port[0]; serial_console_cflag = DefSpeed | CS8; #if 0 serial_console = 64; /*callout_driver.minor_start */ #endif } /* Initialize the tty_driver structure */ cy_serial_driver->owner = THIS_MODULE; cy_serial_driver->name = "ttyS"; cy_serial_driver->major = TTY_MAJOR; cy_serial_driver->minor_start = 64; cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; cy_serial_driver->init_termios = tty_std_termios; cy_serial_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; cy_serial_driver->flags = TTY_DRIVER_REAL_RAW; tty_set_operations(cy_serial_driver, &cy_ops); ret = tty_register_driver(cy_serial_driver); if (ret) { printk(KERN_ERR "Couldn't register MVME166/7 serial driver\n"); put_tty_driver(cy_serial_driver); return ret; } port_num = 0; info = cy_port; for (index = 0; index < 1; index++) { good_ports = 4; if (port_num < NR_PORTS) { while (good_ports-- && port_num < NR_PORTS) { /*** initialize port ***/ info->magic = CYCLADES_MAGIC; info->type = PORT_CIRRUS; info->card = index; info->line = port_num; info->flags = STD_COM_FLAGS; info->tty = NULL; info->xmit_fifo_size = 12; info->cor1 = CyPARITY_NONE | Cy_8_BITS; info->cor2 = CyETC; info->cor3 = Cy_1_STOP; info->cor4 = 0x08; /* _very_ small receive threshold */ info->cor5 = 0; info->cor6 = 0; info->cor7 = 0; info->tbpr = baud_bpr[DefSpeed]; /* Tx BPR */ info->tco = baud_co[DefSpeed]; /* Tx CO */ info->rbpr = baud_bpr[DefSpeed]; /* Rx BPR */ info->rco = baud_co[DefSpeed] >> 5; /* Rx CO */ info->close_delay = 0; info->x_char = 0; info->count = 0; #ifdef SERIAL_DEBUG_COUNT printk("cyc: %d: setting count to 0\n", __LINE__); #endif info->blocked_open = 0; info->default_threshold = 0; info->default_timeout = 0; init_waitqueue_head(&info->open_wait); init_waitqueue_head(&info->close_wait); /* info->session */ /* info->pgrp */ /*** !!!!!!!! this may expose new bugs !!!!!!!!! *********/ info->read_status_mask = CyTIMEOUT | CySPECHAR | CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; /* info->timeout */ printk("ttyS%d ", info->line); port_num++; info++; if (!(port_num & 7)) { printk("\n "); } } } printk("\n"); } while (port_num < NR_PORTS) { info->line = -1; port_num++; info++; } #ifdef CONFIG_REMOTE_DEBUG debug_setup(); #endif ret = request_irq(MVME167_IRQ_SER_ERR, cd2401_rxerr_interrupt, 0, "cd2401_errors", cd2401_rxerr_interrupt); if (ret) { printk(KERN_ERR "Could't get cd2401_errors IRQ"); goto cleanup_serial_driver; } ret = request_irq(MVME167_IRQ_SER_MODEM, cd2401_modem_interrupt, 0, "cd2401_modem", cd2401_modem_interrupt); if (ret) { printk(KERN_ERR "Could't get cd2401_modem IRQ"); goto cleanup_irq_cd2401_errors; } ret = request_irq(MVME167_IRQ_SER_TX, cd2401_tx_interrupt, 0, "cd2401_txints", cd2401_tx_interrupt); if (ret) { printk(KERN_ERR "Could't get cd2401_txints IRQ"); goto cleanup_irq_cd2401_modem; } ret = request_irq(MVME167_IRQ_SER_RX, cd2401_rx_interrupt, 0, "cd2401_rxints", cd2401_rx_interrupt); if (ret) { printk(KERN_ERR "Could't get cd2401_rxints IRQ"); goto cleanup_irq_cd2401_txints; } /* Now we have registered the interrupt handlers, allow the interrupts */ pcc2chip[PccSCCMICR] = 0x15; /* Serial ints are level 5 */ pcc2chip[PccSCCTICR] = 0x15; pcc2chip[PccSCCRICR] = 0x15; pcc2chip[PccIMLR] = 3; /* Allow PCC2 ints above 3!? */ return 0; cleanup_irq_cd2401_txints: free_irq(MVME167_IRQ_SER_TX, cd2401_tx_interrupt); cleanup_irq_cd2401_modem: free_irq(MVME167_IRQ_SER_MODEM, cd2401_modem_interrupt); cleanup_irq_cd2401_errors: free_irq(MVME167_IRQ_SER_ERR, cd2401_rxerr_interrupt); cleanup_serial_driver: if (tty_unregister_driver(cy_serial_driver)) printk(KERN_ERR "Couldn't unregister MVME166/7 serial driver\n"); put_tty_driver(cy_serial_driver); return ret; } /* serial167_init */ module_init(serial167_init); #ifdef CYCLOM_SHOW_STATUS static void show_status(int line_num) { volatile unsigned char *base_addr = (u_char *) BASE_ADDR; int channel; struct cyclades_port *info; unsigned long flags; info = &cy_port[line_num]; channel = info->line; printk(" channel %d\n", channel); /**/ printk(" cy_port\n"); printk(" card line flags = %d %d %x\n", info->card, info->line, info->flags); printk (" *tty read_status_mask timeout xmit_fifo_size = %lx %x %x %x\n", (long)info->tty, info->read_status_mask, info->timeout, info->xmit_fifo_size); printk(" cor1,cor2,cor3,cor4,cor5,cor6,cor7 = %x %x %x %x %x %x %x\n", info->cor1, info->cor2, info->cor3, info->cor4, info->cor5, info->cor6, info->cor7); printk(" tbpr,tco,rbpr,rco = %d %d %d %d\n", info->tbpr, info->tco, info->rbpr, info->rco); printk(" close_delay event count = %d %d %d\n", info->close_delay, info->event, info->count); printk(" x_char blocked_open = %x %x\n", info->x_char, info->blocked_open); printk(" open_wait = %lx %lx %lx\n", (long)info->open_wait); local_irq_save(flags); /* Global Registers */ printk(" CyGFRCR %x\n", base_addr[CyGFRCR]); printk(" CyCAR %x\n", base_addr[CyCAR]); printk(" CyRISR %x\n", base_addr[CyRISR]); printk(" CyTISR %x\n", base_addr[CyTISR]); printk(" CyMISR %x\n", base_addr[CyMISR]); printk(" CyRIR %x\n", base_addr[CyRIR]); printk(" CyTIR %x\n", base_addr[CyTIR]); printk(" CyMIR %x\n", base_addr[CyMIR]); printk(" CyTPR %x\n", base_addr[CyTPR]); base_addr[CyCAR] = (u_char) channel; /* Virtual Registers */ #if 0 printk(" CyRIVR %x\n", base_addr[CyRIVR]); printk(" CyTIVR %x\n", base_addr[CyTIVR]); printk(" CyMIVR %x\n", base_addr[CyMIVR]); printk(" CyMISR %x\n", base_addr[CyMISR]); #endif /* Channel Registers */ printk(" CyCCR %x\n", base_addr[CyCCR]); printk(" CyIER %x\n", base_addr[CyIER]); printk(" CyCOR1 %x\n", base_addr[CyCOR1]); printk(" CyCOR2 %x\n", base_addr[CyCOR2]); printk(" CyCOR3 %x\n", base_addr[CyCOR3]); printk(" CyCOR4 %x\n", base_addr[CyCOR4]); printk(" CyCOR5 %x\n", base_addr[CyCOR5]); #if 0 printk(" CyCCSR %x\n", base_addr[CyCCSR]); printk(" CyRDCR %x\n", base_addr[CyRDCR]); #endif printk(" CySCHR1 %x\n", base_addr[CySCHR1]); printk(" CySCHR2 %x\n", base_addr[CySCHR2]); #if 0 printk(" CySCHR3 %x\n", base_addr[CySCHR3]); printk(" CySCHR4 %x\n", base_addr[CySCHR4]); printk(" CySCRL %x\n", base_addr[CySCRL]); printk(" CySCRH %x\n", base_addr[CySCRH]); printk(" CyLNC %x\n", base_addr[CyLNC]); printk(" CyMCOR1 %x\n", base_addr[CyMCOR1]); printk(" CyMCOR2 %x\n", base_addr[CyMCOR2]); #endif printk(" CyRTPRL %x\n", base_addr[CyRTPRL]); printk(" CyRTPRH %x\n", base_addr[CyRTPRH]); printk(" CyMSVR1 %x\n", base_addr[CyMSVR1]); printk(" CyMSVR2 %x\n", base_addr[CyMSVR2]); printk(" CyRBPR %x\n", base_addr[CyRBPR]); printk(" CyRCOR %x\n", base_addr[CyRCOR]); printk(" CyTBPR %x\n", base_addr[CyTBPR]); printk(" CyTCOR %x\n", base_addr[CyTCOR]); local_irq_restore(flags); } /* show_status */ #endif #if 0 /* Dummy routine in mvme16x/config.c for now */ /* Serial console setup. Called from linux/init/main.c */ void console_setup(char *str, int *ints) { char *s; int baud, bits, parity; int cflag = 0; /* Sanity check. */ if (ints[0] > 3 || ints[1] > 3) return; /* Get baud, bits and parity */ baud = 2400; bits = 8; parity = 'n'; if (ints[2]) baud = ints[2]; if ((s = strchr(str, ','))) { do { s++; } while (*s >= '0' && *s <= '9'); if (*s) parity = *s++; if (*s) bits = *s - '0'; } /* Now construct a cflag setting. */ switch (baud) { case 1200: cflag |= B1200; break; case 9600: cflag |= B9600; break; case 19200: cflag |= B19200; break; case 38400: cflag |= B38400; break; case 2400: default: cflag |= B2400; break; } switch (bits) { case 7: cflag |= CS7; break; default: case 8: cflag |= CS8; break; } switch (parity) { case 'o': case 'O': cflag |= PARODD; break; case 'e': case 'E': cflag |= PARENB; break; } serial_console_info = &cy_port[ints[1]]; serial_console_cflag = cflag; serial_console = ints[1] + 64; /*callout_driver.minor_start */ } #endif /* * The following is probably out of date for 2.1.x serial console stuff. * * The console is registered early on from arch/m68k/kernel/setup.c, and * it therefore relies on the chip being setup correctly by 166-Bug. This * seems reasonable, as the serial port has been used to invoke the system * boot. It also means that this function must not rely on any data * initialisation performed by serial167_init() etc. * * Of course, once the console has been registered, we had better ensure * that serial167_init() doesn't leave the chip non-functional. * * The console must be locked when we get here. */ void serial167_console_write(struct console *co, const char *str, unsigned count) { volatile unsigned char *base_addr = (u_char *) BASE_ADDR; unsigned long flags; volatile u_char sink; u_char ier; int port; u_char do_lf = 0; int i = 0; local_irq_save(flags); /* Ensure transmitter is enabled! */ port = 0; base_addr[CyCAR] = (u_char) port; while (base_addr[CyCCR]) ; base_addr[CyCCR] = CyENB_XMTR; ier = base_addr[CyIER]; base_addr[CyIER] = CyTxMpty; while (1) { if (pcc2chip[PccSCCTICR] & 0x20) { /* We have a Tx int. Acknowledge it */ sink = pcc2chip[PccTPIACKR]; if ((base_addr[CyLICR] >> 2) == port) { if (i == count) { /* Last char of string is now output */ base_addr[CyTEOIR] = CyNOTRANS; break; } if (do_lf) { base_addr[CyTDR] = '\n'; str++; i++; do_lf = 0; } else if (*str == '\n') { base_addr[CyTDR] = '\r'; do_lf = 1; } else { base_addr[CyTDR] = *str++; i++; } base_addr[CyTEOIR] = 0; } else base_addr[CyTEOIR] = CyNOTRANS; } } base_addr[CyIER] = ier; local_irq_restore(flags); } static struct tty_driver *serial167_console_device(struct console *c, int *index) { *index = c->index; return cy_serial_driver; } static struct console sercons = { .name = "ttyS", .write = serial167_console_write, .device = serial167_console_device, .flags = CON_PRINTBUFFER, .index = -1, }; static int __init serial167_console_init(void) { if (vme_brdtype == VME_TYPE_MVME166 || vme_brdtype == VME_TYPE_MVME167 || vme_brdtype == VME_TYPE_MVME177) { mvme167_serial_console_setup(0); register_console(&sercons); } return 0; } console_initcall(serial167_console_init); #ifdef CONFIG_REMOTE_DEBUG void putDebugChar(int c) { volatile unsigned char *base_addr = (u_char *) BASE_ADDR; unsigned long flags; volatile u_char sink; u_char ier; int port; local_irq_save(flags); /* Ensure transmitter is enabled! */ port = DEBUG_PORT; base_addr[CyCAR] = (u_char) port; while (base_addr[CyCCR]) ; base_addr[CyCCR] = CyENB_XMTR; ier = base_addr[CyIER]; base_addr[CyIER] = CyTxMpty; while (1) { if (pcc2chip[PccSCCTICR] & 0x20) { /* We have a Tx int. Acknowledge it */ sink = pcc2chip[PccTPIACKR]; if ((base_addr[CyLICR] >> 2) == port) { base_addr[CyTDR] = c; base_addr[CyTEOIR] = 0; break; } else base_addr[CyTEOIR] = CyNOTRANS; } } base_addr[CyIER] = ier; local_irq_restore(flags); } int getDebugChar() { volatile unsigned char *base_addr = (u_char *) BASE_ADDR; unsigned long flags; volatile u_char sink; u_char ier; int port; int i, c; i = debugiq.out; if (i != debugiq.in) { c = debugiq.buf[i]; if (++i == DEBUG_LEN) i = 0; debugiq.out = i; return c; } /* OK, nothing in queue, wait in poll loop */ local_irq_save(flags); /* Ensure receiver is enabled! */ port = DEBUG_PORT; base_addr[CyCAR] = (u_char) port; #if 0 while (base_addr[CyCCR]) ; base_addr[CyCCR] = CyENB_RCVR; #endif ier = base_addr[CyIER]; base_addr[CyIER] = CyRxData; while (1) { if (pcc2chip[PccSCCRICR] & 0x20) { /* We have a Rx int. Acknowledge it */ sink = pcc2chip[PccRPIACKR]; if ((base_addr[CyLICR] >> 2) == port) { int cnt = base_addr[CyRFOC]; while (cnt-- > 0) { c = base_addr[CyRDR]; if (c == 0) printk ("!! debug char is null (cnt=%d) !!", cnt); else queueDebugChar(c); } base_addr[CyREOIR] = 0; i = debugiq.out; if (i == debugiq.in) panic("Debug input queue empty!"); c = debugiq.buf[i]; if (++i == DEBUG_LEN) i = 0; debugiq.out = i; break; } else base_addr[CyREOIR] = CyNOTRANS; } } base_addr[CyIER] = ier; local_irq_restore(flags); return (c); } void queueDebugChar(int c) { int i; i = debugiq.in; debugiq.buf[i] = c; if (++i == DEBUG_LEN) i = 0; if (i != debugiq.out) debugiq.in = i; } static void debug_setup() { unsigned long flags; volatile unsigned char *base_addr = (u_char *) BASE_ADDR; int i, cflag; cflag = B19200; local_irq_save(flags); for (i = 0; i < 4; i++) { base_addr[CyCAR] = i; base_addr[CyLICR] = i << 2; } debugiq.in = debugiq.out = 0; base_addr[CyCAR] = DEBUG_PORT; /* baud rate */ i = cflag & CBAUD; base_addr[CyIER] = 0; base_addr[CyCMR] = CyASYNC; base_addr[CyLICR] = DEBUG_PORT << 2; base_addr[CyLIVR] = 0x5c; /* tx and rx baud rate */ base_addr[CyTCOR] = baud_co[i]; base_addr[CyTBPR] = baud_bpr[i]; base_addr[CyRCOR] = baud_co[i] >> 5; base_addr[CyRBPR] = baud_bpr[i]; /* set line characteristics according configuration */ base_addr[CySCHR1] = 0; base_addr[CySCHR2] = 0; base_addr[CySCRL] = 0; base_addr[CySCRH] = 0; base_addr[CyCOR1] = Cy_8_BITS | CyPARITY_NONE; base_addr[CyCOR2] = 0; base_addr[CyCOR3] = Cy_1_STOP; base_addr[CyCOR4] = baud_cor4[i]; base_addr[CyCOR5] = 0; base_addr[CyCOR6] = 0; base_addr[CyCOR7] = 0; write_cy_cmd(base_addr, CyINIT_CHAN); write_cy_cmd(base_addr, CyENB_RCVR); base_addr[CyCAR] = DEBUG_PORT; /* !!! Is this needed? */ base_addr[CyRTPRL] = 2; base_addr[CyRTPRH] = 0; base_addr[CyMSVR1] = CyRTS; base_addr[CyMSVR2] = CyDTR; base_addr[CyIER] = CyRxData; local_irq_restore(flags); } /* debug_setup */ #endif MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-09 22:59:01 -0400