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Message-Id: <1303421937-2325-15-git-send-email-dykmanj@linux.vnet.ibm.com>
Date: Thu, 21 Apr 2011 17:38:44 -0400
From: dykmanj@...ux.vnet.ibm.com
To: netdev@...r.kernel.org
Cc: Jim Dykman <dykmanj@...ux.vnet.ibm.com>,
Piyush Chaudhary <piyushc@...ux.vnet.ibm.com>,
Fu-Chung Chang <fcchang@...ux.vnet.ibm.com>,
" William S. Cadden" <wscadden@...ux.vnet.ibm.com>,
" Wen C. Chen" <winstonc@...ux.vnet.ibm.com>,
Scot Sakolish <sakolish@...ux.vnet.ibm.com>,
Jian Xiao <jian@...ux.vnet.ibm.com>,
" Carol L. Soto" <clsoto@...ux.vnet.ibm.com>,
" Sarah J. Sheppard" <sjsheppa@...ux.vnet.ibm.com>
Subject: [PATCH v3 14/27] HFI: Add hypercalls to create/modify/free page tables in the nMMU
From: Jim Dykman <dykmanj@...ux.vnet.ibm.com>
Signed-off-by: Piyush Chaudhary <piyushc@...ux.vnet.ibm.com>
Signed-off-by: Jim Dykman <dykmanj@...ux.vnet.ibm.com>
Signed-off-by: Fu-Chung Chang <fcchang@...ux.vnet.ibm.com>
Signed-off-by: William S. Cadden <wscadden@...ux.vnet.ibm.com>
Signed-off-by: Wen C. Chen <winstonc@...ux.vnet.ibm.com>
Signed-off-by: Scot Sakolish <sakolish@...ux.vnet.ibm.com>
Signed-off-by: Jian Xiao <jian@...ux.vnet.ibm.com>
Signed-off-by: Carol L. Soto <clsoto@...ux.vnet.ibm.com>
Signed-off-by: Sarah J. Sheppard <sjsheppa@...ux.vnet.ibm.com>
---
drivers/net/hfi/core/hfidd_hcalls.c | 124 +++++++++++++++++++++++++++++++++++
drivers/net/hfi/core/hfidd_proto.h | 15 ++++
include/linux/hfi/hfidd_hcalls.h | 3 +
3 files changed, 142 insertions(+), 0 deletions(-)
diff --git a/drivers/net/hfi/core/hfidd_hcalls.c b/drivers/net/hfi/core/hfidd_hcalls.c
index 2ca1c8a..aabb2a8 100644
--- a/drivers/net/hfi/core/hfidd_hcalls.c
+++ b/drivers/net/hfi/core/hfidd_hcalls.c
@@ -45,6 +45,64 @@ static inline long long h_nmmu_stop(int token, u64 torrent_chip_ID)
return plpar_hcall_norets(token, torrent_chip_ID);
}
+static inline long long h_nmmu_allocate_resource(int token,
+ u64 torrent_chip_ID,
+ u64 resource_name,
+ u64 eaddr,
+ u64 memory_region_size,
+ u64 access_controls,
+ u64 protection_domain,
+ u64 MR_Handle_In,
+ u64 *MR_Handle_out,
+ u64 *L_Key,
+ u64 *liobn)
+{
+ u64 hyp_outputs[PLPAR_HCALL9_BUFSIZE];
+ long long rc;
+
+ rc = plpar_hcall9(token, (unsigned long *)hyp_outputs,
+ torrent_chip_ID, resource_name, eaddr,
+ memory_region_size, access_controls,
+ protection_domain, MR_Handle_In);
+ *MR_Handle_out = hyp_outputs[0]; /* 1st ret value */
+ *L_Key = hyp_outputs[1]; /* 2nd */
+ *liobn = hyp_outputs[3]; /* 4th */
+
+ return rc;
+}
+
+static inline long long h_nmmu_free_resource(int token,
+ u64 torrent_chip_ID,
+ u64 resource_name,
+ u64 MR_Handle,
+ u64 subregion)
+{
+ return plpar_hcall_norets(token,
+ torrent_chip_ID,
+ resource_name,
+ MR_Handle,
+ subregion);
+}
+
+static inline long long h_nmmu_modify_resource(int token,
+ u64 torrent_chip_ID,
+ u64 request,
+ u64 MR_Handle,
+ u64 subregion,
+ u64 eaddr,
+ u64 laddr,
+ u64 num_pg_sz)
+{
+ return plpar_hcall_norets(token,
+ torrent_chip_ID,
+ request,
+ MR_Handle,
+ subregion,
+ eaddr,
+ laddr,
+ num_pg_sz);
+}
+
static inline long long h_hfi_start_interface(int token,
u64 HFI_chip_ID)
{
@@ -94,6 +152,72 @@ long long hfi_stop_nmmu(u64 chip_id)
return hvrc;
}
+long long hfi_allocate_mr(u64 chip_id, u64 res, u64 addr, u64 mr_size,
+ u64 access,
+ u64 job_id,
+ u64 mr_handle_in,
+ u64 *mr_handle_out,
+ u64 *lkey_p,
+ u64 *liobn)
+{
+ return h_nmmu_allocate_resource(H_NMMU_ALLOCATE_RESOURCE,
+ chip_id,
+ res,
+ addr,
+ mr_size,
+ access,
+ job_id,
+ mr_handle_in,
+ mr_handle_out,
+ lkey_p,
+ liobn);
+}
+
+long long hfi_modify_mr(u64 chip_id, u64 request, u64 mr_handle,
+ u64 sub_id,
+ u64 e_addr,
+ u64 l_addr,
+ u64 num_pg_sz)
+{
+ long long hvrc;
+ u64 start_time = get_jiffies_64();
+
+ while (1) {
+ hvrc = h_nmmu_modify_resource(H_NMMU_MODIFY_RESOURCE,
+ chip_id,
+ request,
+ mr_handle,
+ sub_id,
+ e_addr,
+ l_addr,
+ num_pg_sz);
+ if (hvrc != H_BUSY)
+ break;
+ if (hfidd_age_hcall(start_time))
+ break;
+ }
+ return hvrc;
+}
+
+long long hfi_free_mr(u64 chip_id, u64 res, u64 mr_handle, u64 sub_region_id)
+{
+ long long hvrc;
+ u64 start_time = get_jiffies_64();
+
+ while (1) {
+ hvrc = h_nmmu_free_resource(H_NMMU_FREE_RESOURCE,
+ chip_id,
+ res,
+ mr_handle,
+ sub_region_id);
+ if (hvrc != H_BUSY)
+ break;
+ if (hfidd_age_hcall(start_time))
+ break;
+ }
+ return hvrc;
+}
+
long long hfi_hquery_interface(u64 unit_id, u64 subtype,
u64 query_p, u64 *state)
{
diff --git a/drivers/net/hfi/core/hfidd_proto.h b/drivers/net/hfi/core/hfidd_proto.h
index 001f6d5..fb9c8c8 100644
--- a/drivers/net/hfi/core/hfidd_proto.h
+++ b/drivers/net/hfi/core/hfidd_proto.h
@@ -64,6 +64,21 @@ int hfidd_start_interface(struct hfidd_acs *p_acs);
int hfidd_stop_interface(struct hfidd_acs *p_acs, unsigned int hfi_id);
long long hfi_start_nmmu(u64 chip_id, void *nmmu_info);
long long hfi_stop_nmmu(u64 chip_id);
+long long hfi_allocate_mr(u64 chip_id, u64 res, u64 addr,
+ u64 mr_size,
+ u64 access,
+ u64 job_id,
+ u64 mr_handle_in,
+ u64 *mr_handle_out,
+ u64 *lkey_p,
+ u64 *liobn);
+long long hfi_modify_mr(u64 chip_id, u64 request, u64 mr_handle,
+ u64 sub_id,
+ u64 e_addr,
+ u64 l_addr,
+ u64 num_pg_sz);
+long long hfi_free_mr(u64 chip_id, u64 res, u64 mr_handle,
+ u64 sub_region_id);
long long hfi_hquery_interface(u64 unit_id, u64 subtype, u64 query_p,
u64 *state);
long long hfi_start_interface(u64 unit_id);
diff --git a/include/linux/hfi/hfidd_hcalls.h b/include/linux/hfi/hfidd_hcalls.h
index 57140a0..9fa87c5 100644
--- a/include/linux/hfi/hfidd_hcalls.h
+++ b/include/linux/hfi/hfidd_hcalls.h
@@ -41,6 +41,9 @@
#define H_HFI_STOP_INTERFACE 0xF008
#define H_NMMU_START 0xF028
#define H_NMMU_STOP 0xF02C
+#define H_NMMU_ALLOCATE_RESOURCE 0xF030
+#define H_NMMU_FREE_RESOURCE 0xF034
+#define H_NMMU_MODIFY_RESOURCE 0xF03C
#define HFI_PAGE_CODE_SHIFT 28
--
1.7.3.5
--
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