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Date: Sun, 17 Apr 2011 23:21:41 -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 v2 09/27] HFI: Add HFI window resource tracking
From: Jim Dykman <dykmanj@...ux.vnet.ibm.com>
An HFI window is very roughly similar to an infiniband UD queue pair.
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_adpt.c | 64 ++++++++++++++++++++++++++++++++++++
drivers/net/hfi/core/hfidd_proto.h | 2 +
include/linux/hfi/hfidd_adpt.h | 10 ++++++
include/linux/hfi/hfidd_client.h | 27 +++++++++++++++
include/linux/hfi/hfidd_internal.h | 43 ++++++++++++++++++++++++
5 files changed, 146 insertions(+), 0 deletions(-)
diff --git a/drivers/net/hfi/core/hfidd_adpt.c b/drivers/net/hfi/core/hfidd_adpt.c
index ef795bf..b99303b 100644
--- a/drivers/net/hfi/core/hfidd_adpt.c
+++ b/drivers/net/hfi/core/hfidd_adpt.c
@@ -66,6 +66,16 @@ int hfidd_alloc_adapter(struct hfidd_acs **adpt, dev_t devno, void *uiop)
goto err_exit0;
*adpt = p_acs;
+
+ /* alloc window structures */
+ ret = hfidd_alloc_windows(p_acs);
+ if (ret) {
+ dev_printk(KERN_ERR, p_acs->hfidd_dev,
+ "hfidd_alloc_adapter: hfidd_alloc_windows failed, "
+ "ret = 0x%x\n", ret);
+ goto err_exit0;
+ }
+
return 0;
err_exit0:
@@ -76,9 +86,63 @@ err_exit0:
void hfidd_free_adapter(struct hfidd_acs *p_acs)
{
+ hfidd_free_windows(p_acs);
kfree(p_acs);
}
+int hfidd_alloc_windows(struct hfidd_acs *p_acs)
+{
+ int i;
+
+ p_acs->win = kzalloc(sizeof(*p_acs->win) * p_acs->dds.window_num,
+ GFP_KERNEL);
+
+ if (p_acs->win == NULL) {
+ dev_printk(KERN_ERR, p_acs->hfidd_dev,
+ "hfidd_alloc_windows: kzalloc p_acs->win failed\n");
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < p_acs->dds.window_num; i++) {
+ p_acs->win[i] = kzalloc(sizeof(*(p_acs->win[i])),
+ GFP_KERNEL);
+ if (p_acs->win[i] == NULL) {
+ dev_printk(KERN_ERR, p_acs->hfidd_dev,
+ "hfidd_alloc_windows: kzalloc win 0x%x "
+ "failed\n", i);
+ hfidd_free_windows(p_acs);
+ return -ENOMEM;
+ }
+
+ /* Initialize window fields */
+ spin_lock_init(&(p_acs->win[i]->win_lock));
+
+ p_acs->win[i]->ai = p_acs->index;
+ p_acs->win[i]->index = p_acs->dds.window_start + i;
+
+ if (p_acs->win[i]->index < (p_acs->dds.window_start +
+ MAX_D_WIN_PER_HFI)) {
+ p_acs->win[i]->type = HFIDD_DYNAMIC_WIN;
+ } else {
+ p_acs->win[i]->type = HFIDD_RESERVE_WIN;
+ }
+ p_acs->win[i]->state = WIN_AVAILABLE;
+ }
+ return 0;
+}
+
+void hfidd_free_windows(struct hfidd_acs *p_acs)
+{
+ int i;
+
+ for (i = 0; i < p_acs->dds.window_num; i++) {
+ kfree(p_acs->win[i]);
+ p_acs->win[i] = NULL;
+ }
+ kfree(p_acs->win);
+ p_acs->win = NULL;
+}
+
/* Allocate the page for the HCALL */
int hfidd_get_phyp_page(struct hfidd_acs *p_acs, caddr_t *page, caddr_t *laddr,
int size)
diff --git a/drivers/net/hfi/core/hfidd_proto.h b/drivers/net/hfi/core/hfidd_proto.h
index 320f41f..c61387e 100644
--- a/drivers/net/hfi/core/hfidd_proto.h
+++ b/drivers/net/hfi/core/hfidd_proto.h
@@ -35,6 +35,8 @@
int hfidd_alloc_adapter(struct hfidd_acs **adpt, dev_t, void *uiop);
void hfidd_free_adapter(struct hfidd_acs *p_acs);
+int hfidd_alloc_windows(struct hfidd_acs *p_acs);
+void hfidd_free_windows(struct hfidd_acs *p_acs);
int hfidd_init_adapter(struct hfidd_acs *p_acs, void *uiop);
int hfidd_age_hcall(u64 time_start);
int hfidd_get_phyp_page(struct hfidd_acs *p_acs, caddr_t *page,
diff --git a/include/linux/hfi/hfidd_adpt.h b/include/linux/hfi/hfidd_adpt.h
index e3271e9..babdb14 100644
--- a/include/linux/hfi/hfidd_adpt.h
+++ b/include/linux/hfi/hfidd_adpt.h
@@ -47,4 +47,14 @@
#define HFI_GOING_UNAVAIL 2
#define HFI_UNAVAIL 3
+/* HFI window states */
+#define WIN_AVAILABLE 0
+#define WIN_RESERVED 1
+#define WIN_OPENED 2
+#define WIN_SUSPENDED 3
+#define WIN_ERROR 4
+#define WIN_HERROR 5
+#define WIN_PENDING 6
+#define WIN_FAIL_CLOSE 7
+
#endif /* _HFIDD_ADPT_H_ */
diff --git a/include/linux/hfi/hfidd_client.h b/include/linux/hfi/hfidd_client.h
index b2ebd01..c3c8fef 100644
--- a/include/linux/hfi/hfidd_client.h
+++ b/include/linux/hfi/hfidd_client.h
@@ -64,6 +64,33 @@ struct hfi_req_hdr {
};
#define HFIDD_REQ_HDR_SIZE sizeof(struct hfi_req_hdr)
+struct fifo_info {
+ struct hfi_64b eaddr;
+ unsigned long long size; /* bytes */
+};
+
+#define HFIDD_IP_WIN 1 /* IP windows get broadcasts forwarded
+ to them... */
+#define HFIDD_KERNEL_WIN 2 /* ... other kernel windows do not */
+#define HFIDD_RESERVE_WIN 3 /* Must be reserved by job scheduler */
+#define HFIDD_DYNAMIC_WIN 4 /* First come, first served. Window# is
+ returned */
+struct hfi_client_info {
+ struct hfi_req_hdr hdr;
+
+ unsigned int window;
+ unsigned int win_type; /* HFIDD_*_WIN */
+ unsigned int job_id;
+ unsigned int protection_key_flag;
+ unsigned int protection_key;
+ unsigned int local_isrid; /* Output */
+ struct fifo_info sfifo;
+ struct fifo_info rfifo;
+ struct hfi_64b sfifo_finish_vec;
+ unsigned int sfifo_lkey; /* Output */
+ struct hfi_64b mmio_regs; /* Output */
+};
+
#define MAX_TORRENTS 1
#define MAX_HFI_PER_TORRENT 2
#define MAX_HFIS (MAX_TORRENTS * MAX_HFI_PER_TORRENT)
diff --git a/include/linux/hfi/hfidd_internal.h b/include/linux/hfi/hfidd_internal.h
index 311f906..a36c244 100644
--- a/include/linux/hfi/hfidd_internal.h
+++ b/include/linux/hfi/hfidd_internal.h
@@ -59,9 +59,13 @@
#include <asm/pgalloc.h>
#include <asm/ibmebus.h>
#include <linux/kthread.h>
+
#include <linux/hfi/hfidd_client.h>
#include <linux/hfi/hfidd_adpt.h>
#include <linux/hfi/hfidd_hcalls.h>
+
+#define MAX_D_WIN_PER_HFI (p_acs->dds.num_d_windows)
+
#define HFIDD_DEV_NAME "hfi"
#define HFIDD_CLASS_NAME "hfi"
@@ -76,6 +80,44 @@ struct hfidd_dds {
unsigned long long fw_ec_level; /* Firmware Level */
};
+struct hfidd_fifo {
+ unsigned long long eaddr;
+ unsigned long long size;
+};
+
+#define IRQ_NAME_SIZE 20
+
+struct hfidd_window {
+ spinlock_t win_lock; /* lock for window */
+ int index;
+ unsigned int type; /* dynamic/scheduled */
+ int state;
+
+ unsigned int ai; /* index to p_acs */
+ unsigned int is_ip;
+
+ unsigned int job_id;
+ unsigned int pid;
+ unsigned int protection_key_flag; /* by job/task */
+
+ unsigned int recv_intr; /* Recv interrupt */
+ unsigned int send_intr; /* Send interrupt */
+ char recv_name[IRQ_NAME_SIZE];
+ char send_name[IRQ_NAME_SIZE];
+
+ uid_t uid;
+
+ struct hfi_client_info client_info; /* From user input */
+ struct win_open_info *win_open_info_p; /* virtual addr
+ OPEN_WINDOW hcall */
+ caddr_t win_open_info_laddr; /* logical addr
+ OPEN_WINDOW hcall */
+ unsigned long long mmio_regs; /* logical addr from
+ OPEN WINDOW hcall */
+ struct hfidd_vlxmem *sfifo_x_tab;
+ struct hfidd_vlxmem *rfifo_x_tab;
+};
+
#define HFI_DEVICE_NAME_MAX 64
/* hfi global */
struct hfidd_acs {
@@ -87,6 +129,7 @@ struct hfidd_acs {
unsigned int isr;
+ struct hfidd_window **win;
struct device *hfidd_dev;
struct hfidd_dds dds;
};
--
1.7.3.5
--
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