X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fdevices%2F8254.c;h=b945d2b2ffceefc887d60812c6400edb0b276213;hb=9cf8f2ddcb1d8c1d14adb6e5ac7084a5bb91d07a;hp=31375d327fcff027f218f72b7f446416da380454;hpb=b4aaeaa7233244ad9d607a0077dbbce719833fe0;p=palacios.git diff --git a/palacios/src/devices/8254.c b/palacios/src/devices/8254.c index 31375d3..b945d2b 100644 --- a/palacios/src/devices/8254.c +++ b/palacios/src/devices/8254.c @@ -89,6 +89,8 @@ struct pit { struct v3_timer * timer; + struct v3_vm_info * vm; + struct channel ch_0; struct channel ch_1; struct channel ch_2; @@ -127,7 +129,7 @@ struct pit_rdb_status_word { * This should call out to handle_SQR_WAVE_tics, etc... */ // Returns true if the the output signal changed state -static int handle_crystal_tics(struct vm_device * dev, struct channel * ch, uint_t oscillations) { +static int handle_crystal_tics(struct pit * pit, struct channel * ch, uint_t oscillations) { uint_t channel_cycles = 0; uint_t output_changed = 0; @@ -239,8 +241,7 @@ static int handle_crystal_tics(struct vm_device * dev, struct channel * ch, uint #include static void pit_update_timer(struct guest_info * info, ullong_t cpu_cycles, ullong_t cpu_freq, void * private_data) { - struct vm_device * dev = (struct vm_device *)private_data; - struct pit * state = (struct pit *)dev->private_data; + struct pit * state = (struct pit *)private_data; // ullong_t tmp_ctr = state->pit_counter; ullong_t tmp_cycles; uint_t oscillations = 0; @@ -298,15 +299,18 @@ static void pit_update_timer(struct guest_info * info, ullong_t cpu_cycles, ullo // update counter with remainder (mod reload) state->pit_counter = state->pit_reload - cpu_cycles; - //PrintDebug("8254 PIT: Handling %d crystal tics\n", oscillations); - if (handle_crystal_tics(dev, &(state->ch_0), oscillations) == 1) { + if (oscillations) { + PrintDebug("8254 PIT: Handling %d crystal tics\n", oscillations); + } + + if (handle_crystal_tics(state, &(state->ch_0), oscillations) == 1) { // raise interrupt - PrintDebug("8254 PIT: Injecting Timer interrupt to guest\n"); + // PrintDebug("8254 PIT: Injecting Timer interrupt to guest\n"); v3_raise_irq(info->vm_info, 0); } - //handle_crystal_tics(dev, &(state->ch_1), oscillations); - handle_crystal_tics(dev, &(state->ch_2), oscillations); + //handle_crystal_tics(state, &(state->ch_1), oscillations); + handle_crystal_tics(state, &(state->ch_2), oscillations); } @@ -478,8 +482,7 @@ static int handle_channel_cmd(struct channel * ch, struct pit_cmd_word cmd) { static int pit_read_channel(struct guest_info * core, ushort_t port, void * dst, uint_t length, void * priv_data) { - struct vm_device * dev = (struct vm_device *)priv_data; - struct pit * state = (struct pit *)dev->private_data; + struct pit * state = (struct pit *)priv_data; char * val = (char *)dst; if (length != 1) { @@ -525,8 +528,7 @@ static int pit_read_channel(struct guest_info * core, ushort_t port, void * dst, static int pit_write_channel(struct guest_info * core, ushort_t port, void * src, uint_t length, void * priv_data) { - struct vm_device * dev = (struct vm_device *)priv_data; - struct pit * state = (struct pit *)dev->private_data; + struct pit * state = (struct pit *)priv_data; char val = *(char *)src; if (length != 1) { @@ -574,8 +576,7 @@ static int pit_write_channel(struct guest_info * core, ushort_t port, void * src static int pit_write_command(struct guest_info * core, ushort_t port, void * src, uint_t length, void * priv_data) { - struct vm_device * dev = (struct vm_device *)priv_data; - struct pit * state = (struct pit *)dev->private_data; + struct pit * state = (struct pit *)priv_data; struct pit_cmd_word * cmd = (struct pit_cmd_word *)src; PrintDebug("8254 PIT: Write to PIT Command port\n"); @@ -646,32 +647,79 @@ static void init_channel(struct channel * ch) { -static int pit_free(struct vm_device * dev) { - struct pit * state = (struct pit *)dev->private_data; - struct guest_info * info = &(dev->vm->cores[0]); +static int pit_free(void * private_data) { + struct pit * state = (struct pit *)private_data; + struct guest_info * info = &(state->vm->cores[0]); if (state->timer) { v3_remove_timer(info, state->timer); } + + V3_Free(state); + return 0; +} + +#ifdef CONFIG_KEYED_STREAMS +static int pit_checkpoint(struct vm_device *dev, v3_keyed_stream_t stream) +{ + struct pit *p = (struct pit *) (dev->private_data); + + v3_keyed_stream_key_t ks; + + ks = v3_keyed_stream_open_key(stream,dev->name); + + if (!ks) { + return -1; + } - v3_unhook_io_port(dev->vm, CHANNEL0_PORT); - v3_unhook_io_port(dev->vm, CHANNEL1_PORT); - v3_unhook_io_port(dev->vm, CHANNEL2_PORT); - v3_unhook_io_port(dev->vm, COMMAND_PORT); - v3_unhook_io_port(dev->vm, SPEAKER_PORT); + STD_SAVE(stream,ks,p->pit_counter); + STD_SAVE(stream,ks,p->pit_reload); + STD_SAVE(stream,ks,p->ch_0); + STD_SAVE(stream,ks,p->ch_1); + STD_SAVE(stream,ks,p->ch_2); + STD_SAVE(stream,ks,p->speaker); + + v3_keyed_stream_close_key(stream,ks); - V3_Free(state); return 0; + + } +static int pit_restore(struct vm_device *dev, v3_keyed_stream_t stream) +{ + struct pit *p = (struct pit *) (dev->private_data); -static struct v3_device_ops dev_ops = { - .free = pit_free, - .reset = NULL, - .start = NULL, - .stop = NULL, + v3_keyed_stream_key_t ks; + ks = v3_keyed_stream_open_key(stream,dev->name); + + if (!ks) { + return -1; + } + + STD_LOAD(stream,ks,p->pit_counter); + STD_LOAD(stream,ks,p->pit_reload); + STD_LOAD(stream,ks,p->ch_0); + STD_LOAD(stream,ks,p->ch_1); + STD_LOAD(stream,ks,p->ch_2); + STD_LOAD(stream,ks,p->speaker); + + v3_keyed_stream_close_key(stream,ks); + + return 0; + + +} +#endif + +static struct v3_device_ops dev_ops = { + .free = (int (*)(void *))pit_free, +#ifdef CONFIG_KEYED_STREAMS + .checkpoint = pit_checkpoint, + .restore = pit_restore, +#endif }; #include @@ -680,30 +728,40 @@ static int pit_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { struct pit * pit_state = NULL; struct vm_device * dev = NULL; char * dev_id = v3_cfg_val(cfg, "ID"); - + int ret = 0; + // PIT is only usable in non-multicore environments // just hardcode the core context struct guest_info * info = &(vm->cores[0]); - uint_t cpu_khz = V3_CPU_KHZ(); + uint_t cpu_khz = info->time_state.guest_cpu_freq; ullong_t reload_val = (ullong_t)cpu_khz * 1000; pit_state = (struct pit *)V3_Malloc(sizeof(struct pit)); + V3_ASSERT(pit_state != NULL); pit_state->speaker = 0; + pit_state->vm = vm; - dev = v3_allocate_device(dev_id, &dev_ops, pit_state); + dev = v3_add_device(vm, dev_id, &dev_ops, pit_state); - if (v3_attach_device(vm, dev) == -1) { + if (dev == NULL) { PrintError("Could not attach device %s\n", dev_id); + V3_Free(pit_state); return -1; } - v3_hook_io_port(vm, CHANNEL0_PORT, &pit_read_channel, &pit_write_channel, dev); - v3_hook_io_port(vm, CHANNEL1_PORT, &pit_read_channel, &pit_write_channel, dev); - v3_hook_io_port(vm, CHANNEL2_PORT, &pit_read_channel, &pit_write_channel, dev); - v3_hook_io_port(vm, COMMAND_PORT, NULL, &pit_write_command, dev); - v3_hook_io_port(vm, SPEAKER_PORT, &pit_read_channel, &pit_write_channel, dev); + ret |= v3_dev_hook_io(dev, CHANNEL0_PORT, &pit_read_channel, &pit_write_channel); + ret |= v3_dev_hook_io(dev, CHANNEL1_PORT, &pit_read_channel, &pit_write_channel); + ret |= v3_dev_hook_io(dev, CHANNEL2_PORT, &pit_read_channel, &pit_write_channel); + ret |= v3_dev_hook_io(dev, COMMAND_PORT, NULL, &pit_write_command); + ret |= v3_dev_hook_io(dev, SPEAKER_PORT, &pit_read_channel, &pit_write_channel); + + if (ret != 0) { + PrintError("8254 PIT: Failed to hook IO ports\n"); + v3_remove_device(dev); + return -1; + } #ifdef CONFIG_DEBUG_PIT PrintDebug("8254 PIT: OSC_HZ=%d, reload_val=", OSC_HZ); @@ -713,10 +771,10 @@ static int pit_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { - pit_state->timer = v3_add_timer(info, &timer_ops, dev); + pit_state->timer = v3_add_timer(info, &timer_ops, pit_state); if (pit_state->timer == NULL) { - v3_detach_device(dev); + v3_remove_device(dev); return -1; } @@ -727,7 +785,6 @@ static int pit_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { pit_state->pit_reload = reload_val; - init_channel(&(pit_state->ch_0)); init_channel(&(pit_state->ch_1)); init_channel(&(pit_state->ch_2));