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Message-Id: <1440060386-13189-5-git-send-email-izumi.taku@jp.fujitsu.com>
Date: Thu, 20 Aug 2015 17:46:09 +0900
From: Taku Izumi <izumi.taku@...fujitsu.com>
To: netdev@...r.kernel.org, davem@...emloft.net
Cc: platform-driver-x86@...r.kernel.org, dvhart@...radead.org,
rkhan@...hat.com, alexander.h.duyck@...hat.com,
linux-acpi@...r.kernel.org, joe@...ches.com,
sergei.shtylyov@...entembedded.com, stephen@...workplumber.org,
yasu.isimatu@...il.com, Taku Izumi <izumi.taku@...fujitsu.com>
Subject: [PATCH v2.2 05/22] fjes: ES information acquisition routine
This patch adds ES information acquisition routine.
ES information can be retrieved issuing information
request command. ES information includes which
receiver is same zone.
Signed-off-by: Taku Izumi <izumi.taku@...fujitsu.com>
---
drivers/net/fjes/fjes_hw.c | 101 +++++++++++++++++++++++++++++++++++++++++++
drivers/net/fjes/fjes_hw.h | 24 ++++++++++
drivers/net/fjes/fjes_regs.h | 23 ++++++++++
3 files changed, 148 insertions(+)
diff --git a/drivers/net/fjes/fjes_hw.c b/drivers/net/fjes/fjes_hw.c
index abe583e..3fbe68e 100644
--- a/drivers/net/fjes/fjes_hw.c
+++ b/drivers/net/fjes/fjes_hw.c
@@ -351,6 +351,107 @@ void fjes_hw_exit(struct fjes_hw *hw)
fjes_hw_cleanup(hw);
}
+static enum fjes_dev_command_response_e
+fjes_hw_issue_request_command(struct fjes_hw *hw,
+ enum fjes_dev_command_request_type type)
+{
+ union REG_CR cr;
+ union REG_CS cs;
+ enum fjes_dev_command_response_e ret = FJES_CMD_STATUS_UNKNOWN;
+ int timeout;
+
+ cr.reg = 0;
+ cr.bits.req_start = 1;
+ cr.bits.req_code = type;
+ wr32(XSCT_CR, cr.reg);
+ cr.reg = rd32(XSCT_CR);
+
+ if (cr.bits.error == 0) {
+ timeout = FJES_COMMAND_REQ_TIMEOUT * 1000;
+ cs.reg = rd32(XSCT_CS);
+
+ while ((cs.bits.complete != 1) && timeout > 0) {
+ msleep(1000);
+ cs.reg = rd32(XSCT_CS);
+ timeout -= 1000;
+ }
+
+ if (cs.bits.complete == 1)
+ ret = FJES_CMD_STATUS_NORMAL;
+ else if (timeout <= 0)
+ ret = FJES_CMD_STATUS_TIMEOUT;
+
+ } else {
+ switch (cr.bits.err_info) {
+ case FJES_CMD_REQ_ERR_INFO_PARAM:
+ ret = FJES_CMD_STATUS_ERROR_PARAM;
+ break;
+ case FJES_CMD_REQ_ERR_INFO_STATUS:
+ ret = FJES_CMD_STATUS_ERROR_STATUS;
+ break;
+ default:
+ ret = FJES_CMD_STATUS_UNKNOWN;
+ break;
+ }
+ }
+
+ return ret;
+}
+
+int fjes_hw_request_info(struct fjes_hw *hw)
+{
+ union fjes_device_command_req *req_buf = hw->hw_info.req_buf;
+ union fjes_device_command_res *res_buf = hw->hw_info.res_buf;
+ enum fjes_dev_command_response_e ret;
+ int result;
+
+ memset(req_buf, 0, hw->hw_info.req_buf_size);
+ memset(res_buf, 0, hw->hw_info.res_buf_size);
+
+ req_buf->info.length = FJES_DEV_COMMAND_INFO_REQ_LEN;
+
+ res_buf->info.length = 0;
+ res_buf->info.code = 0;
+
+ ret = fjes_hw_issue_request_command(hw, FJES_CMD_REQ_INFO);
+
+ result = 0;
+
+ if (FJES_DEV_COMMAND_INFO_RES_LEN((*hw->hw_info.max_epid)) !=
+ res_buf->info.length) {
+ result = -ENOMSG;
+ } else if (ret == FJES_CMD_STATUS_NORMAL) {
+ switch (res_buf->info.code) {
+ case FJES_CMD_REQ_RES_CODE_NORMAL:
+ result = 0;
+ break;
+ default:
+ result = -EPERM;
+ break;
+ }
+ } else {
+ switch (ret) {
+ case FJES_CMD_STATUS_UNKNOWN:
+ result = -EPERM;
+ break;
+ case FJES_CMD_STATUS_TIMEOUT:
+ result = -EBUSY;
+ break;
+ case FJES_CMD_STATUS_ERROR_PARAM:
+ result = -EPERM;
+ break;
+ case FJES_CMD_STATUS_ERROR_STATUS:
+ result = -EPERM;
+ break;
+ default:
+ result = -EPERM;
+ break;
+ }
+ }
+
+ return result;
+}
+
void fjes_hw_set_irqmask(struct fjes_hw *hw,
enum REG_ICTL_MASK intr_mask, bool mask)
{
diff --git a/drivers/net/fjes/fjes_hw.h b/drivers/net/fjes/fjes_hw.h
index 1b3e9ca..df30d3d 100644
--- a/drivers/net/fjes/fjes_hw.h
+++ b/drivers/net/fjes/fjes_hw.h
@@ -34,6 +34,12 @@ struct fjes_hw;
#define EP_BUFFER_INFO_SIZE 4096
#define FJES_DEVICE_RESET_TIMEOUT ((17 + 1) * 3) /* sec */
+#define FJES_COMMAND_REQ_TIMEOUT (5 + 1) /* sec */
+
+#define FJES_CMD_REQ_ERR_INFO_PARAM (0x0001)
+#define FJES_CMD_REQ_ERR_INFO_STATUS (0x0002)
+
+#define FJES_CMD_REQ_RES_CODE_NORMAL (0)
#define EP_BUFFER_SIZE \
(((sizeof(union ep_buffer_info) + (128 * (64 * 1024))) \
@@ -50,6 +56,7 @@ struct fjes_hw;
((size) - sizeof(struct esmem_frame) - \
(ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN))
+#define FJES_DEV_COMMAND_INFO_REQ_LEN (4)
#define FJES_DEV_COMMAND_INFO_RES_LEN(epnum) (8 + 2 * (epnum))
#define FJES_DEV_COMMAND_SHARE_BUFFER_REQ_LEN(txb, rxb) \
(24 + (8 * ((txb) / EP_BUFFER_INFO_SIZE + (rxb) / EP_BUFFER_INFO_SIZE)))
@@ -124,6 +131,13 @@ union fjes_device_command_res {
} stop_trace;
};
+/* request command type */
+enum fjes_dev_command_request_type {
+ FJES_CMD_REQ_INFO = 0x0001,
+ FJES_CMD_REQ_SHARE_BUFFER = 0x0002,
+ FJES_CMD_REQ_UNSHARE_BUFFER = 0x0004,
+};
+
/* parameter for command control */
struct fjes_device_command_param {
u32 req_len;
@@ -133,6 +147,15 @@ struct fjes_device_command_param {
phys_addr_t share_start;
};
+/* error code for command control */
+enum fjes_dev_command_response_e {
+ FJES_CMD_STATUS_UNKNOWN,
+ FJES_CMD_STATUS_NORMAL,
+ FJES_CMD_STATUS_TIMEOUT,
+ FJES_CMD_STATUS_ERROR_PARAM,
+ FJES_CMD_STATUS_ERROR_STATUS,
+};
+
/* EP buffer information */
union ep_buffer_info {
u8 raw[EP_BUFFER_INFO_SIZE];
@@ -243,6 +266,7 @@ struct fjes_hw {
int fjes_hw_init(struct fjes_hw *);
void fjes_hw_exit(struct fjes_hw *);
int fjes_hw_reset(struct fjes_hw *);
+int fjes_hw_request_info(struct fjes_hw *);
void fjes_hw_init_command_registers(struct fjes_hw *,
struct fjes_device_command_param *);
diff --git a/drivers/net/fjes/fjes_regs.h b/drivers/net/fjes/fjes_regs.h
index 4d0e071..cc975a0 100644
--- a/drivers/net/fjes/fjes_regs.h
+++ b/drivers/net/fjes/fjes_regs.h
@@ -35,6 +35,8 @@
#define XSCT_DCTL 0x0010 /* Device Control */
/* Command Control registers */
+#define XSCT_CR 0x0020 /* Command request */
+#define XSCT_CS 0x0024 /* Command status */
#define XSCT_SHSTSAL 0x0028 /* Share status address Low */
#define XSCT_SHSTSAH 0x002C /* Share status address High */
@@ -78,6 +80,27 @@ union REG_DCTL {
__le32 reg;
};
+/* Command Control registers */
+union REG_CR {
+ struct {
+ __le32 req_code:16;
+ __le32 err_info:14;
+ __le32 error:1;
+ __le32 req_start:1;
+ } bits;
+ __le32 reg;
+};
+
+union REG_CS {
+ struct {
+ __le32 req_code:16;
+ __le32 rsv0:14;
+ __le32 busy:1;
+ __le32 complete:1;
+ } bits;
+ __le32 reg;
+};
+
enum REG_ICTL_MASK {
REG_ICTL_MASK_INFO_UPDATE = 1 << 20,
REG_ICTL_MASK_DEV_STOP_REQ = 1 << 19,
--
1.8.3.1
--
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