Test behaviour of timers and interrupts related to timeouts. Signed-off-by: Frediano Ziglio <fredd...@gmail.com> --- tests/Makefile | 2 +- tests/rtl8139-test.c | 164 +++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 165 insertions(+), 1 deletion(-)
This patch was derived from a test I did while implementing timer in rtl8139 code. Now that there is support for integrated testing I converted it. The test was tested on a real NIC. As if it's the first test I wrote I don't know if syntax and details are fine. For instance should I remove nop test? Should I split my test? diff --git a/tests/Makefile b/tests/Makefile index e4ddb6a..8858407 100644 --- a/tests/Makefile +++ b/tests/Makefile @@ -320,7 +320,7 @@ tests/tmp105-test$(EXESUF): tests/tmp105-test.o $(libqos-omap-obj-y) tests/i440fx-test$(EXESUF): tests/i440fx-test.o $(libqos-pc-obj-y) tests/fw_cfg-test$(EXESUF): tests/fw_cfg-test.o $(libqos-pc-obj-y) tests/e1000-test$(EXESUF): tests/e1000-test.o -tests/rtl8139-test$(EXESUF): tests/rtl8139-test.o +tests/rtl8139-test$(EXESUF): tests/rtl8139-test.o $(libqos-pc-obj-y) tests/pcnet-test$(EXESUF): tests/pcnet-test.o tests/eepro100-test$(EXESUF): tests/eepro100-test.o tests/vmxnet3-test$(EXESUF): tests/vmxnet3-test.o diff --git a/tests/rtl8139-test.c b/tests/rtl8139-test.c index f6a1be3..87f1792 100644 --- a/tests/rtl8139-test.c +++ b/tests/rtl8139-test.c @@ -10,19 +10,183 @@ #include <glib.h> #include <string.h> #include "libqtest.h" +#include "libqos/pci-pc.h" #include "qemu/osdep.h" +#include "qemu-common.h" /* Tests only initialization so far. TODO: Replace with functional tests */ static void nop(void) { } +#define CLK 33000000 +#define NS_PER_SEC 1000000000ULL + +static QPCIBus *pcibus; +static QPCIDevice *dev = NULL; +static void *dev_base = NULL; + +static void save_fn(QPCIDevice *dev, int devfn, void *data) +{ + QPCIDevice **pdev = (QPCIDevice **) data; + + *pdev = dev; +} + +static QPCIDevice *get_device(void) +{ + QPCIDevice *dev; + + pcibus = qpci_init_pc(); + qpci_device_foreach(pcibus, 0x10ec, 0x8139, save_fn, &dev); + g_assert(dev != NULL); + + return dev; +} + +#define PORT(name,len,val) \ +static unsigned __attribute__((unused)) in_##name(void) { \ + unsigned res = qpci_io_read##len(dev,dev_base+(val)); \ + g_test_message("*%s -> %x\n", #name, res); \ + return res; \ +} \ +static void out_##name(unsigned v) { \ + g_test_message("%x -> *%s\n", v, #name); \ + qpci_io_write##len(dev,dev_base+(val),v); \ +} + +PORT(Timer,l,0x48) +PORT(IntrMask,w,0x3c) +PORT(IntrStatus,w,0x3E) +PORT(TimerInt,l,0x54) + +#define fatal(...) do { g_test_message(__VA_ARGS__); g_assert(0); } while(0) + +static void test_timer(void) +{ + const unsigned from = 0.95 * CLK; + const unsigned to = 1.6 * CLK; + + out_IntrMask(0); + + in_IntrStatus(); + in_Timer(); + in_Timer(); + + // Test 1. test counter continue and continue + out_TimerInt(0); // disable timer + out_IntrStatus(0x4000); + out_Timer(12345); // reset timer to 0 + unsigned curr = in_Timer(); + unsigned cnt; + if (curr > 0.1 * CLK) + fatal("time too big %u\n", curr); + for (cnt=0;;) { + clock_step(1 * NS_PER_SEC); + unsigned prev = curr; + curr = in_Timer(); + + // test skip is in a specific range + unsigned diff = (curr-prev) & 0xffffffffu; + if (diff < from || diff > to) + fatal("Invalid diff %u (%u-%u)\n", diff, from,to); + if (curr < prev && ++cnt == 3) + break; + } + + // Test 2. Check we didn't get an interrupt with TimerInt == 0 + if (in_IntrStatus() & 0x4000) + fatal("got an interrupt\n"); + + // Test 3. Setting TimerInt to 1 and Timer to 0 get interrupt + out_TimerInt(1); + out_Timer(0); + clock_step(40); + if ((in_IntrStatus() & 0x4000) == 0) + fatal("we should have an interrupt here!\n"); + + // Test 3. Check acknowledge + out_IntrStatus(0x4000); + if (in_IntrStatus() & 0x4000) + fatal("got an interrupt\n"); + + // Test. Status set after Timer reset + out_Timer(0); + out_TimerInt(0); + out_IntrStatus(0x4000); + curr = in_Timer(); + out_TimerInt(curr + 0.5 * CLK); + clock_step(1 * NS_PER_SEC); + out_Timer(0); + if ((in_IntrStatus() & 0x4000) == 0) + fatal("we should have an interrupt here!\n"); + + // Test. Status set after TimerInt reset + out_Timer(0); + out_TimerInt(0); + out_IntrStatus(0x4000); + curr = in_Timer(); + out_TimerInt(curr + 0.5 * CLK); + clock_step(1 * NS_PER_SEC); + out_TimerInt(0); + if ((in_IntrStatus() & 0x4000) == 0) + fatal("we should have an interrupt here!\n"); + + // Test 4. Increment TimerInt we should see an interrupt + curr = in_Timer(); + unsigned next = curr + 5.0 * CLK; + out_TimerInt(next); + for (cnt=0;;) { + clock_step(1 * NS_PER_SEC); + unsigned prev = curr; + curr = in_Timer(); + unsigned diff = (curr-prev) & 0xffffffffu; + if (diff < from || diff > to) + fatal("Invalid diff %u (%u-%u)\n", diff, from,to); + if (cnt < 3 && curr > next) { + if ((in_IntrStatus() & 0x4000) == 0) + fatal("we should have an interrupt here!\n"); + out_IntrStatus(0x4000); + next = curr + 5.0 * CLK; + out_TimerInt(next); + if (++cnt == 3) + out_TimerInt(1); + // Test 5. Second time we pass from 0 should see an interrupt + } else if (cnt >= 3 && curr < prev) { + // here we should have an interrupt + if ((in_IntrStatus() & 0x4000) == 0) + fatal("we should have an interrupt here!\n"); + out_IntrStatus(0x4000); + if (++cnt == 5) break; + } + } + + g_test_message("Everythink is ok!\n"); +} + + +static void test_init(void) +{ + uint64_t barsize; + + dev = get_device(); + + dev_base = qpci_iomap(dev, 0, &barsize); + + g_assert(dev_base != NULL); + + qpci_device_enable(dev); + + test_timer(); +} + int main(int argc, char **argv) { int ret; g_test_init(&argc, &argv, NULL); qtest_add_func("/rtl8139/nop", nop); + qtest_add_func("/rtl8139/timer", test_init); qtest_start("-device rtl8139"); ret = g_test_run(); -- 1.9.1