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tools/testing/nvdimm: add mock acpi_nfit_flush_address entries to nfit_test

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In preparation for fixing the BLK path to properly use "directed
pcommit" enable the unit test infrastructure to emit mock "flush"
tables.  Writes to these flush addresses trigger a memory controller to
flush its internal buffers to persistent media, similar to the x86
"pcommit" instruction.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2015-07-10 14:07:03 -04:00
parent f7ec83684a
commit 9d27a87ec9
3 changed files with 71 additions and 2 deletions
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2
tools/testing/nvdimm/Kbuild
View File

@ -1,4 +1,6 @@
ldflags-y += --wrap=ioremap_wt
ldflags-y += --wrap=ioremap_wc
ldflags-y += --wrap=devm_ioremap_nocache
ldflags-y += --wrap=ioremap_cache
ldflags-y += --wrap=ioremap_nocache
ldflags-y += --wrap=iounmap

21
tools/testing/nvdimm/test/iomap.c
View File

@ -65,6 +65,21 @@ void __iomem *__nfit_test_ioremap(resource_size_t offset, unsigned long size,
return fallback_fn(offset, size);
}
void __iomem *__wrap_devm_ioremap_nocache(struct device *dev,
resource_size_t offset, unsigned long size)
{
struct nfit_test_resource *nfit_res;
rcu_read_lock();
nfit_res = get_nfit_res(offset);
rcu_read_unlock();
if (nfit_res)
return (void __iomem *) nfit_res->buf + offset
- nfit_res->res->start;
return devm_ioremap_nocache(dev, offset, size);
}
EXPORT_SYMBOL(__wrap_devm_ioremap_nocache);
void __iomem *__wrap_ioremap_cache(resource_size_t offset, unsigned long size)
{
return __nfit_test_ioremap(offset, size, ioremap_cache);
@ -83,6 +98,12 @@ void __iomem *__wrap_ioremap_wt(resource_size_t offset, unsigned long size)
}
EXPORT_SYMBOL(__wrap_ioremap_wt);
void __iomem *__wrap_ioremap_wc(resource_size_t offset, unsigned long size)
{
return __nfit_test_ioremap(offset, size, ioremap_wc);
}
EXPORT_SYMBOL(__wrap_ioremap_wc);
void __wrap_iounmap(volatile void __iomem *addr)
{
struct nfit_test_resource *nfit_res;

50
tools/testing/nvdimm/test/nfit.c
View File

@ -128,6 +128,8 @@ struct nfit_test {
int num_pm;
void **dimm;
dma_addr_t *dimm_dma;
void **flush;
dma_addr_t *flush_dma;
void **label;
dma_addr_t *label_dma;
void **spa_set;
@ -331,7 +333,8 @@ static int nfit_test0_alloc(struct nfit_test *t)
+ sizeof(struct acpi_nfit_system_address) * NUM_SPA
+ sizeof(struct acpi_nfit_memory_map) * NUM_MEM
+ sizeof(struct acpi_nfit_control_region) * NUM_DCR
+ sizeof(struct acpi_nfit_data_region) * NUM_BDW;
+ sizeof(struct acpi_nfit_data_region) * NUM_BDW
+ sizeof(struct acpi_nfit_flush_address) * NUM_DCR;
int i;
t->nfit_buf = test_alloc(t, nfit_size, &t->nfit_dma);
@ -356,6 +359,10 @@ static int nfit_test0_alloc(struct nfit_test *t)
if (!t->label[i])
return -ENOMEM;
sprintf(t->label[i], "label%d", i);
t->flush[i] = test_alloc(t, 8, &t->flush_dma[i]);
if (!t->flush[i])
return -ENOMEM;
}
for (i = 0; i < NUM_DCR; i++) {
@ -408,6 +415,7 @@ static void nfit_test0_setup(struct nfit_test *t)
struct acpi_nfit_system_address *spa;
struct acpi_nfit_control_region *dcr;
struct acpi_nfit_data_region *bdw;
struct acpi_nfit_flush_address *flush;
unsigned int offset;
nfit_test_init_header(nfit_buf, size);
@ -831,6 +839,39 @@ static void nfit_test0_setup(struct nfit_test *t)
bdw->capacity = DIMM_SIZE;
bdw->start_address = 0;
offset = offset + sizeof(struct acpi_nfit_data_region) * 4;
/* flush0 (dimm0) */
flush = nfit_buf + offset;
flush->header.type = ACPI_NFIT_TYPE_FLUSH_ADDRESS;
flush->header.length = sizeof(struct acpi_nfit_flush_address);
flush->device_handle = handle[0];
flush->hint_count = 1;
flush->hint_address[0] = t->flush_dma[0];
/* flush1 (dimm1) */
flush = nfit_buf + offset + sizeof(struct acpi_nfit_flush_address) * 1;
flush->header.type = ACPI_NFIT_TYPE_FLUSH_ADDRESS;
flush->header.length = sizeof(struct acpi_nfit_flush_address);
flush->device_handle = handle[1];
flush->hint_count = 1;
flush->hint_address[0] = t->flush_dma[1];
/* flush2 (dimm2) */
flush = nfit_buf + offset + sizeof(struct acpi_nfit_flush_address) * 2;
flush->header.type = ACPI_NFIT_TYPE_FLUSH_ADDRESS;
flush->header.length = sizeof(struct acpi_nfit_flush_address);
flush->device_handle = handle[2];
flush->hint_count = 1;
flush->hint_address[0] = t->flush_dma[2];
/* flush3 (dimm3) */
flush = nfit_buf + offset + sizeof(struct acpi_nfit_flush_address) * 3;
flush->header.type = ACPI_NFIT_TYPE_FLUSH_ADDRESS;
flush->header.length = sizeof(struct acpi_nfit_flush_address);
flush->device_handle = handle[3];
flush->hint_count = 1;
flush->hint_address[0] = t->flush_dma[3];
acpi_desc = &t->acpi_desc;
set_bit(ND_CMD_GET_CONFIG_SIZE, &acpi_desc->dimm_dsm_force_en);
set_bit(ND_CMD_GET_CONFIG_DATA, &acpi_desc->dimm_dsm_force_en);
@ -933,6 +974,10 @@ static int nfit_test_probe(struct platform_device *pdev)
GFP_KERNEL);
nfit_test->dimm_dma = devm_kcalloc(dev, num, sizeof(dma_addr_t),
GFP_KERNEL);
nfit_test->flush = devm_kcalloc(dev, num, sizeof(void *),
GFP_KERNEL);
nfit_test->flush_dma = devm_kcalloc(dev, num, sizeof(dma_addr_t),
GFP_KERNEL);
nfit_test->label = devm_kcalloc(dev, num, sizeof(void *),
GFP_KERNEL);
nfit_test->label_dma = devm_kcalloc(dev, num,
@ -943,7 +988,8 @@ static int nfit_test_probe(struct platform_device *pdev)
sizeof(dma_addr_t), GFP_KERNEL);
if (nfit_test->dimm && nfit_test->dimm_dma && nfit_test->label
&& nfit_test->label_dma && nfit_test->dcr
&& nfit_test->dcr_dma)
&& nfit_test->dcr_dma && nfit_test->flush
&& nfit_test->flush_dma)
/* pass */;
else
return -ENOMEM;