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| author | Frank Ch. Eigler <fche@redhat.com> | 1998-06-04 12:43:45 +0000 |
|---|---|---|
| committer | Frank Ch. Eigler <fche@redhat.com> | 1998-06-04 12:43:45 +0000 |
| commit | da040f2a6c7a5dfa3c2bacecc97128ac4477d904 (patch) | |
| tree | d277d4307eecfd810b83c298ab6c1d9fdef7419c /sim/mips/dv-tx3904irc.c | |
| parent | 0e797366efd0c7aad9acddcaeac4a55a0fd8bfb7 (diff) | |
| download | gdb-da040f2a6c7a5dfa3c2bacecc97128ac4477d904.zip gdb-da040f2a6c7a5dfa3c2bacecc97128ac4477d904.tar.gz gdb-da040f2a6c7a5dfa3c2bacecc97128ac4477d904.tar.bz2 | |
* Early check-in of tx3904 timer sim implementation for ECC.
It is not yet properly tested.
Thu Jun 4 15:37:33 1998 Frank Ch. Eigler <fche@cygnus.com>
* dv-tx3904tmr.c: New file - implements tx3904 timer.
* dv-tx3904{irc,cpu}.c: Mild reformatting.
* configure.in: Include tx3904tmr in hw_device list.
* configure: Rebuilt.
* interp.c (sim_open): Instantiate three timer instances.
Fix address typo of tx3904irc instance.
Diffstat (limited to 'sim/mips/dv-tx3904irc.c')
| -rw-r--r-- | sim/mips/dv-tx3904irc.c | 46 |
1 files changed, 27 insertions, 19 deletions
diff --git a/sim/mips/dv-tx3904irc.c b/sim/mips/dv-tx3904irc.c index d8064d3..f0d3260 100644 --- a/sim/mips/dv-tx3904irc.c +++ b/sim/mips/dv-tx3904irc.c @@ -21,7 +21,7 @@ #include "sim-main.h" -#include "hw-base.h" +#include "hw-main.h" /* DEVICE @@ -35,7 +35,10 @@ Implements the tx3904 interrupt controller described in the tx3904 user guide. It does not include the interrupt detection circuit - that preprocesses the eight external interrupts. + that preprocesses the eight external interrupts, so assumes that + each event on an input interrupt port signals a new interrupt. + That is, it implements edge- rather than level-triggered + interrupts. PROPERTIES @@ -89,9 +92,24 @@ + + +/* register numbers; each is one word long */ +enum +{ + ISR_REG = 0, + IMR_REG = 1, + ILR0_REG = 4, + ILR1_REG = 5, + ILR2_REG = 6, + ILR3_REG = 7, +}; + + /* port ID's */ -enum { +enum +{ /* inputs, ordered to correspond to interrupt sources 0..15 */ INT1_PORT = 0, INT2_PORT, INT3_PORT, INT4_PORT, INT5_PORT, INT6_PORT, INT7_PORT, DMAC3_PORT, DMAC2_PORT, DMAC1_PORT, DMAC0_PORT, SIO0_PORT, SIO1_PORT, @@ -108,18 +126,6 @@ enum { }; -/* register numbers; each is one word long */ -enum { - ISR_REG = 0, - IMR_REG = 1, - ILR0_REG = 4, - ILR1_REG = 5, - ILR2_REG = 6, - ILR3_REG = 7, -}; - - - static const struct hw_port_descriptor tx3904irc_ports[] = { /* interrupt output */ @@ -178,9 +184,9 @@ struct tx3904irc { /* Finish off the partially created hw device. Attach our local callbacks. Wire up our port names etc */ -static hw_io_read_buffer_callback tx3904irc_io_read_buffer; -static hw_io_write_buffer_callback tx3904irc_io_write_buffer; -static hw_port_event_callback tx3904irc_port_event; +static hw_io_read_buffer_method tx3904irc_io_read_buffer; +static hw_io_write_buffer_method tx3904irc_io_write_buffer; +static hw_port_event_method tx3904irc_port_event; static void attach_tx3904irc_regs (struct hw *me, @@ -251,6 +257,8 @@ tx3904irc_port_event (struct hw *me, { struct tx3904irc *controller = hw_data (me); + /* Ignore level - use only edge-triggered interrupts */ + switch (my_port) { case INT0_PORT: @@ -385,7 +393,7 @@ tx3904irc_io_write_buffer (struct hw *me, } -const struct hw_device_descriptor dv_tx3904irc_descriptor[] = { +const struct hw_descriptor dv_tx3904irc_descriptor[] = { { "tx3904irc", tx3904irc_finish, }, { NULL }, }; |