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cxl: Separate bare-metal fields in adapter and AFU data structures

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Introduce sub-structures containing the bare-metal specific fields in
the structures describing the adapter (struct cxl) and AFU (struct
cxl_afu).
Update all their references.

Co-authored-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Reviewed-by: Manoj Kumar <manoj@linux.vnet.ibm.com>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Lombard
2016-03-04 12:26:35 +01:00
committed by Michael Ellerman
parent 444c4ba461
commit cbffa3a514
8 changed files with 168 additions and 115 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/misc/cxl/native.c
+44 -41
View File
@@ -186,22 +186,22 @@ static int spa_max_procs(int spa_size)
int cxl_alloc_spa(struct cxl_afu *afu)
{
/* Work out how many pages to allocate */
afu->spa_order = 0;
afu->native->spa_order = 0;
do {
afu->spa_order++;
afu->spa_size = (1 << afu->spa_order) * PAGE_SIZE;
afu->spa_max_procs = spa_max_procs(afu->spa_size);
} while (afu->spa_max_procs < afu->num_procs);
afu->native->spa_order++;
afu->native->spa_size = (1 << afu->native->spa_order) * PAGE_SIZE;
afu->native->spa_max_procs = spa_max_procs(afu->native->spa_size);
} while (afu->native->spa_max_procs < afu->num_procs);
WARN_ON(afu->spa_size > 0x100000); /* Max size supported by the hardware */
WARN_ON(afu->native->spa_size > 0x100000); /* Max size supported by the hardware */
if (!(afu->spa = (struct cxl_process_element *)
__get_free_pages(GFP_KERNEL | __GFP_ZERO, afu->spa_order))) {
if (!(afu->native->spa = (struct cxl_process_element *)
__get_free_pages(GFP_KERNEL | __GFP_ZERO, afu->native->spa_order))) {
pr_err("cxl_alloc_spa: Unable to allocate scheduled process area\n");
return -ENOMEM;
}
pr_devel("spa pages: %i afu->spa_max_procs: %i afu->num_procs: %i\n",
1<<afu->spa_order, afu->spa_max_procs, afu->num_procs);
1<<afu->native->spa_order, afu->native->spa_max_procs, afu->num_procs);
return 0;
}
@@ -210,13 +210,15 @@ static void attach_spa(struct cxl_afu *afu)
{
u64 spap;
afu->sw_command_status = (__be64 *)((char *)afu->spa +
((afu->spa_max_procs + 3) * 128));
afu->native->sw_command_status = (__be64 *)((char *)afu->native->spa +
((afu->native->spa_max_procs + 3) * 128));
spap = virt_to_phys(afu->spa) & CXL_PSL_SPAP_Addr;
spap |= ((afu->spa_size >> (12 - CXL_PSL_SPAP_Size_Shift)) - 1) & CXL_PSL_SPAP_Size;
spap = virt_to_phys(afu->native->spa) & CXL_PSL_SPAP_Addr;
spap |= ((afu->native->spa_size >> (12 - CXL_PSL_SPAP_Size_Shift)) - 1) & CXL_PSL_SPAP_Size;
spap |= CXL_PSL_SPAP_V;
pr_devel("cxl: SPA allocated at 0x%p. Max processes: %i, sw_command_status: 0x%p CXL_PSL_SPAP_An=0x%016llx\n", afu->spa, afu->spa_max_procs, afu->sw_command_status, spap);
pr_devel("cxl: SPA allocated at 0x%p. Max processes: %i, sw_command_status: 0x%p CXL_PSL_SPAP_An=0x%016llx\n",
afu->native->spa, afu->native->spa_max_procs,
afu->native->sw_command_status, spap);
cxl_p1n_write(afu, CXL_PSL_SPAP_An, spap);
}
@@ -227,9 +229,10 @@ static inline void detach_spa(struct cxl_afu *afu)
void cxl_release_spa(struct cxl_afu *afu)
{
if (afu->spa) {
free_pages((unsigned long) afu->spa, afu->spa_order);
afu->spa = NULL;
if (afu->native->spa) {
free_pages((unsigned long) afu->native->spa,
afu->native->spa_order);
afu->native->spa = NULL;
}
}
@@ -291,7 +294,7 @@ static void slb_invalid(struct cxl_context *ctx)
struct cxl *adapter = ctx->afu->adapter;
u64 slbia;
WARN_ON(!mutex_is_locked(&ctx->afu->spa_mutex));
WARN_ON(!mutex_is_locked(&ctx->afu->native->spa_mutex));
cxl_p1_write(adapter, CXL_PSL_LBISEL,
((u64)be32_to_cpu(ctx->elem->common.pid) << 32) |
@@ -321,7 +324,7 @@ static int do_process_element_cmd(struct cxl_context *ctx,
ctx->elem->software_state = cpu_to_be32(pe_state);
smp_wmb();
*(ctx->afu->sw_command_status) = cpu_to_be64(cmd | 0 | ctx->pe);
*(ctx->afu->native->sw_command_status) = cpu_to_be64(cmd | 0 | ctx->pe);
smp_mb();
cxl_p1n_write(ctx->afu, CXL_PSL_LLCMD_An, cmd | ctx->pe);
while (1) {
@@ -335,7 +338,7 @@ static int do_process_element_cmd(struct cxl_context *ctx,
rc = -EIO;
goto out;
}
state = be64_to_cpup(ctx->afu->sw_command_status);
state = be64_to_cpup(ctx->afu->native->sw_command_status);
if (state == ~0ULL) {
pr_err("cxl: Error adding process element to AFU\n");
rc = -1;
@@ -363,12 +366,12 @@ static int add_process_element(struct cxl_context *ctx)
{
int rc = 0;
mutex_lock(&ctx->afu->spa_mutex);
mutex_lock(&ctx->afu->native->spa_mutex);
pr_devel("%s Adding pe: %i started\n", __func__, ctx->pe);
if (!(rc = do_process_element_cmd(ctx, CXL_SPA_SW_CMD_ADD, CXL_PE_SOFTWARE_STATE_V)))
ctx->pe_inserted = true;
pr_devel("%s Adding pe: %i finished\n", __func__, ctx->pe);
mutex_unlock(&ctx->afu->spa_mutex);
mutex_unlock(&ctx->afu->native->spa_mutex);
return rc;
}
@@ -380,7 +383,7 @@ static int terminate_process_element(struct cxl_context *ctx)
if (!(ctx->elem->software_state & cpu_to_be32(CXL_PE_SOFTWARE_STATE_V)))
return rc;
mutex_lock(&ctx->afu->spa_mutex);
mutex_lock(&ctx->afu->native->spa_mutex);
pr_devel("%s Terminate pe: %i started\n", __func__, ctx->pe);
/* We could be asked to terminate when the hw is down. That
* should always succeed: it's not running if the hw has gone
@@ -391,7 +394,7 @@ static int terminate_process_element(struct cxl_context *ctx)
CXL_PE_SOFTWARE_STATE_V | CXL_PE_SOFTWARE_STATE_T);
ctx->elem->software_state = 0; /* Remove Valid bit */
pr_devel("%s Terminate pe: %i finished\n", __func__, ctx->pe);
mutex_unlock(&ctx->afu->spa_mutex);
mutex_unlock(&ctx->afu->native->spa_mutex);
return rc;
}
@@ -399,7 +402,7 @@ static int remove_process_element(struct cxl_context *ctx)
{
int rc = 0;
mutex_lock(&ctx->afu->spa_mutex);
mutex_lock(&ctx->afu->native->spa_mutex);
pr_devel("%s Remove pe: %i started\n", __func__, ctx->pe);
/* We could be asked to remove when the hw is down. Again, if
@@ -412,7 +415,7 @@ static int remove_process_element(struct cxl_context *ctx)
ctx->pe_inserted = false;
slb_invalid(ctx);
pr_devel("%s Remove pe: %i finished\n", __func__, ctx->pe);
mutex_unlock(&ctx->afu->spa_mutex);
mutex_unlock(&ctx->afu->native->spa_mutex);
return rc;
}
@@ -425,7 +428,7 @@ void cxl_assign_psn_space(struct cxl_context *ctx)
ctx->psn_size = ctx->afu->adapter->ps_size;
} else {
ctx->psn_phys = ctx->afu->psn_phys +
(ctx->afu->pp_offset + ctx->afu->pp_size * ctx->pe);
(ctx->afu->native->pp_offset + ctx->afu->pp_size * ctx->pe);
ctx->psn_size = ctx->afu->pp_size;
}
}
@@ -437,7 +440,7 @@ static int activate_afu_directed(struct cxl_afu *afu)
dev_info(&afu->dev, "Activating AFU directed mode\n");
afu->num_procs = afu->max_procs_virtualised;
if (afu->spa == NULL) {
if (afu->native->spa == NULL) {
if (cxl_alloc_spa(afu))
return -ENOMEM;
}
@@ -846,27 +849,27 @@ int cxl_native_register_psl_err_irq(struct cxl *adapter)
return -ENOMEM;
if ((rc = cxl_register_one_irq(adapter, native_irq_err, adapter,
&adapter->err_hwirq,
&adapter->err_virq,
&adapter->native->err_hwirq,
&adapter->native->err_virq,
adapter->irq_name))) {
kfree(adapter->irq_name);
adapter->irq_name = NULL;
return rc;
}
cxl_p1_write(adapter, CXL_PSL_ErrIVTE, adapter->err_hwirq & 0xffff);
cxl_p1_write(adapter, CXL_PSL_ErrIVTE, adapter->native->err_hwirq & 0xffff);
return 0;
}
void cxl_native_release_psl_err_irq(struct cxl *adapter)
{
if (adapter->err_virq != irq_find_mapping(NULL, adapter->err_hwirq))
if (adapter->native->err_virq != irq_find_mapping(NULL, adapter->native->err_hwirq))
return;
cxl_p1_write(adapter, CXL_PSL_ErrIVTE, 0x0000000000000000);
cxl_unmap_irq(adapter->err_virq, adapter);
cxl_ops->release_one_irq(adapter, adapter->err_hwirq);
cxl_unmap_irq(adapter->native->err_virq, adapter);
cxl_ops->release_one_irq(adapter, adapter->native->err_hwirq);
kfree(adapter->irq_name);
}
@@ -915,8 +918,8 @@ int cxl_native_register_psl_irq(struct cxl_afu *afu)
if (!afu->psl_irq_name)
return -ENOMEM;
if ((rc = cxl_register_one_irq(afu->adapter, native_irq_multiplexed, afu,
&afu->psl_hwirq, &afu->psl_virq,
if ((rc = cxl_register_one_irq(afu->adapter, native_irq_multiplexed,
afu, &afu->native->psl_hwirq, &afu->native->psl_virq,
afu->psl_irq_name))) {
kfree(afu->psl_irq_name);
afu->psl_irq_name = NULL;
@@ -926,11 +929,11 @@ int cxl_native_register_psl_irq(struct cxl_afu *afu)
void cxl_native_release_psl_irq(struct cxl_afu *afu)
{
if (afu->psl_virq != irq_find_mapping(NULL, afu->psl_hwirq))
if (afu->native->psl_virq != irq_find_mapping(NULL, afu->native->psl_hwirq))
return;
cxl_unmap_irq(afu->psl_virq, afu);
cxl_ops->release_one_irq(afu->adapter, afu->psl_hwirq);
cxl_unmap_irq(afu->native->psl_virq, afu);
cxl_ops->release_one_irq(afu->adapter, afu->native->psl_hwirq);
kfree(afu->psl_irq_name);
}
@@ -970,7 +973,7 @@ static int native_afu_cr_read64(struct cxl_afu *afu, int cr, u64 off, u64 *out)
return -EIO;
if (unlikely(off >= afu->crs_len))
return -ERANGE;
*out = in_le64(afu->afu_desc_mmio + afu->crs_offset +
*out = in_le64(afu->native->afu_desc_mmio + afu->crs_offset +
(cr * afu->crs_len) + off);
return 0;
}
@@ -981,7 +984,7 @@ static int native_afu_cr_read32(struct cxl_afu *afu, int cr, u64 off, u32 *out)
return -EIO;
if (unlikely(off >= afu->crs_len))
return -ERANGE;
*out = in_le32(afu->afu_desc_mmio + afu->crs_offset +
*out = in_le32(afu->native->afu_desc_mmio + afu->crs_offset +
(cr * afu->crs_len) + off);
return 0;
}