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Sleep rather than spin in e1000 when doing long running config operations.

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With r333218 it is now possible for drivers to use an sx lock and thus sleep while
waiting on long running operations rather than DELAY().

Reported by:	gallatin
Reviewed by:	sbruno
Approved by:	sbruno
MFC after:	1 month
Sponsored by:	Limelight Networks
Differential Revision:	https://reviews.freebsd.org/D14984
This commit is contained in:
mmacy 2018-05-08 01:39:45 +00:00
parent 3f10402174
commit 09b593c42b
11 changed files with 297 additions and 569 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

87
sys/dev/e1000/e1000_80003es2lan.c
View File

@ -60,7 +60,6 @@ static s32 e1000_reset_hw_80003es2lan(struct e1000_hw *hw);
static s32 e1000_init_hw_80003es2lan(struct e1000_hw *hw);
static s32 e1000_setup_copper_link_80003es2lan(struct e1000_hw *hw);
static void e1000_clear_hw_cntrs_80003es2lan(struct e1000_hw *hw);
static s32 e1000_acquire_swfw_sync_80003es2lan(struct e1000_hw *hw, u16 mask);
static s32 e1000_cfg_kmrn_10_100_80003es2lan(struct e1000_hw *hw, u16 duplex);
static s32 e1000_cfg_kmrn_1000_80003es2lan(struct e1000_hw *hw);
static s32 e1000_cfg_on_link_up_80003es2lan(struct e1000_hw *hw);
@ -69,7 +68,6 @@ static s32 e1000_read_kmrn_reg_80003es2lan(struct e1000_hw *hw, u32 offset,
static s32 e1000_write_kmrn_reg_80003es2lan(struct e1000_hw *hw, u32 offset,
u16 data);
static void e1000_initialize_hw_bits_80003es2lan(struct e1000_hw *hw);
static void e1000_release_swfw_sync_80003es2lan(struct e1000_hw *hw, u16 mask);
static s32 e1000_read_mac_addr_80003es2lan(struct e1000_hw *hw);
static void e1000_power_down_phy_copper_80003es2lan(struct e1000_hw *hw);
@ -300,7 +298,7 @@ static s32 e1000_acquire_phy_80003es2lan(struct e1000_hw *hw)
DEBUGFUNC("e1000_acquire_phy_80003es2lan");
mask = hw->bus.func ? E1000_SWFW_PHY1_SM : E1000_SWFW_PHY0_SM;
return e1000_acquire_swfw_sync_80003es2lan(hw, mask);
return e1000_acquire_swfw_sync(hw, mask);
}
/**
@ -316,7 +314,7 @@ static void e1000_release_phy_80003es2lan(struct e1000_hw *hw)
DEBUGFUNC("e1000_release_phy_80003es2lan");
mask = hw->bus.func ? E1000_SWFW_PHY1_SM : E1000_SWFW_PHY0_SM;
e1000_release_swfw_sync_80003es2lan(hw, mask);
e1000_release_swfw_sync(hw, mask);
}
/**
@ -334,7 +332,7 @@ static s32 e1000_acquire_mac_csr_80003es2lan(struct e1000_hw *hw)
mask = E1000_SWFW_CSR_SM;
return e1000_acquire_swfw_sync_80003es2lan(hw, mask);
return e1000_acquire_swfw_sync(hw, mask);
}
/**
@ -351,7 +349,7 @@ static void e1000_release_mac_csr_80003es2lan(struct e1000_hw *hw)
mask = E1000_SWFW_CSR_SM;
e1000_release_swfw_sync_80003es2lan(hw, mask);
e1000_release_swfw_sync(hw, mask);
}
/**
@ -366,14 +364,14 @@ static s32 e1000_acquire_nvm_80003es2lan(struct e1000_hw *hw)
DEBUGFUNC("e1000_acquire_nvm_80003es2lan");
ret_val = e1000_acquire_swfw_sync_80003es2lan(hw, E1000_SWFW_EEP_SM);
ret_val = e1000_acquire_swfw_sync(hw, E1000_SWFW_EEP_SM);
if (ret_val)
return ret_val;
ret_val = e1000_acquire_nvm_generic(hw);
if (ret_val)
e1000_release_swfw_sync_80003es2lan(hw, E1000_SWFW_EEP_SM);
e1000_release_swfw_sync(hw, E1000_SWFW_EEP_SM);
return ret_val;
}
@ -389,78 +387,7 @@ static void e1000_release_nvm_80003es2lan(struct e1000_hw *hw)
DEBUGFUNC("e1000_release_nvm_80003es2lan");
e1000_release_nvm_generic(hw);
e1000_release_swfw_sync_80003es2lan(hw, E1000_SWFW_EEP_SM);
}
/**
* e1000_acquire_swfw_sync_80003es2lan - Acquire SW/FW semaphore
* @hw: pointer to the HW structure
* @mask: specifies which semaphore to acquire
*
* Acquire the SW/FW semaphore to access the PHY or NVM. The mask
* will also specify which port we're acquiring the lock for.
**/
static s32 e1000_acquire_swfw_sync_80003es2lan(struct e1000_hw *hw, u16 mask)
{
u32 swfw_sync;
u32 swmask = mask;
u32 fwmask = mask << 16;
s32 i = 0;
s32 timeout = 50;
DEBUGFUNC("e1000_acquire_swfw_sync_80003es2lan");
while (i < timeout) {
if (e1000_get_hw_semaphore_generic(hw))
return -E1000_ERR_SWFW_SYNC;
swfw_sync = E1000_READ_REG(hw, E1000_SW_FW_SYNC);
if (!(swfw_sync & (fwmask | swmask)))
break;
/* Firmware currently using resource (fwmask)
* or other software thread using resource (swmask)
*/
e1000_put_hw_semaphore_generic(hw);
msec_delay_irq(5);
i++;
}
if (i == timeout) {
DEBUGOUT("Driver can't access resource, SW_FW_SYNC timeout.\n");
return -E1000_ERR_SWFW_SYNC;
}
swfw_sync |= swmask;
E1000_WRITE_REG(hw, E1000_SW_FW_SYNC, swfw_sync);
e1000_put_hw_semaphore_generic(hw);
return E1000_SUCCESS;
}
/**
* e1000_release_swfw_sync_80003es2lan - Release SW/FW semaphore
* @hw: pointer to the HW structure
* @mask: specifies which semaphore to acquire
*
* Release the SW/FW semaphore used to access the PHY or NVM. The mask
* will also specify which port we're releasing the lock for.
**/
static void e1000_release_swfw_sync_80003es2lan(struct e1000_hw *hw, u16 mask)
{
u32 swfw_sync;
DEBUGFUNC("e1000_release_swfw_sync_80003es2lan");
while (e1000_get_hw_semaphore_generic(hw) != E1000_SUCCESS)
; /* Empty */
swfw_sync = E1000_READ_REG(hw, E1000_SW_FW_SYNC);
swfw_sync &= ~mask;
E1000_WRITE_REG(hw, E1000_SW_FW_SYNC, swfw_sync);
e1000_put_hw_semaphore_generic(hw);
e1000_release_swfw_sync(hw, E1000_SWFW_EEP_SM);
}
/**

157
sys/dev/e1000/e1000_82571.c
View File

@ -71,11 +71,8 @@ static s32 e1000_check_for_serdes_link_82571(struct e1000_hw *hw);
static s32 e1000_setup_fiber_serdes_link_82571(struct e1000_hw *hw);
static s32 e1000_valid_led_default_82571(struct e1000_hw *hw, u16 *data);
static void e1000_clear_hw_cntrs_82571(struct e1000_hw *hw);
static s32 e1000_get_hw_semaphore_82571(struct e1000_hw *hw);
static s32 e1000_fix_nvm_checksum_82571(struct e1000_hw *hw);
static s32 e1000_get_phy_id_82571(struct e1000_hw *hw);
static void e1000_put_hw_semaphore_82571(struct e1000_hw *hw);
static void e1000_put_hw_semaphore_82573(struct e1000_hw *hw);
static s32 e1000_get_hw_semaphore_82574(struct e1000_hw *hw);
static void e1000_put_hw_semaphore_82574(struct e1000_hw *hw);
static s32 e1000_set_d0_lplu_state_82574(struct e1000_hw *hw,
@ -126,8 +123,8 @@ static s32 e1000_init_phy_params_82571(struct e1000_hw *hw)
phy->ops.get_cable_length = e1000_get_cable_length_igp_2;
phy->ops.read_reg = e1000_read_phy_reg_igp;
phy->ops.write_reg = e1000_write_phy_reg_igp;
phy->ops.acquire = e1000_get_hw_semaphore_82571;
phy->ops.release = e1000_put_hw_semaphore_82571;
phy->ops.acquire = e1000_get_hw_semaphore;
phy->ops.release = e1000_put_hw_semaphore;
break;
case e1000_82573:
phy->type = e1000_phy_m88;
@ -139,12 +136,11 @@ static s32 e1000_init_phy_params_82571(struct e1000_hw *hw)
phy->ops.get_cable_length = e1000_get_cable_length_m88;
phy->ops.read_reg = e1000_read_phy_reg_m88;
phy->ops.write_reg = e1000_write_phy_reg_m88;
phy->ops.acquire = e1000_get_hw_semaphore_82571;
phy->ops.release = e1000_put_hw_semaphore_82571;
phy->ops.acquire = e1000_get_hw_semaphore;
phy->ops.release = e1000_put_hw_semaphore;
break;
case e1000_82574:
case e1000_82583:
E1000_MUTEX_INIT(&hw->dev_spec._82571.swflag_mutex);
phy->type = e1000_phy_bm;
phy->ops.get_cfg_done = e1000_get_cfg_done_generic;
@ -507,99 +503,21 @@ static s32 e1000_get_phy_id_82571(struct e1000_hw *hw)
}
/**
* e1000_get_hw_semaphore_82571 - Acquire hardware semaphore
* @hw: pointer to the HW structure
*
* Acquire the HW semaphore to access the PHY or NVM
**/
static s32 e1000_get_hw_semaphore_82571(struct e1000_hw *hw)
{
u32 swsm;
s32 sw_timeout = hw->nvm.word_size + 1;
s32 fw_timeout = hw->nvm.word_size + 1;
s32 i = 0;
DEBUGFUNC("e1000_get_hw_semaphore_82571");
/* If we have timedout 3 times on trying to acquire
* the inter-port SMBI semaphore, there is old code
* operating on the other port, and it is not
* releasing SMBI. Modify the number of times that
* we try for the semaphore to interwork with this
* older code.
*/
if (hw->dev_spec._82571.smb_counter > 2)
sw_timeout = 1;
/* Get the SW semaphore */
while (i < sw_timeout) {
swsm = E1000_READ_REG(hw, E1000_SWSM);
if (!(swsm & E1000_SWSM_SMBI))
break;
usec_delay(50);
i++;
}
if (i == sw_timeout) {
DEBUGOUT("Driver can't access device - SMBI bit is set.\n");
hw->dev_spec._82571.smb_counter++;
}
/* Get the FW semaphore. */
for (i = 0; i < fw_timeout; i++) {
swsm = E1000_READ_REG(hw, E1000_SWSM);
E1000_WRITE_REG(hw, E1000_SWSM, swsm | E1000_SWSM_SWESMBI);
/* Semaphore acquired if bit latched */
if (E1000_READ_REG(hw, E1000_SWSM) & E1000_SWSM_SWESMBI)
break;
usec_delay(50);
}
if (i == fw_timeout) {
/* Release semaphores */
e1000_put_hw_semaphore_82571(hw);
DEBUGOUT("Driver can't access the NVM\n");
return -E1000_ERR_NVM;
}
return E1000_SUCCESS;
}
/**
* e1000_put_hw_semaphore_82571 - Release hardware semaphore
* @hw: pointer to the HW structure
*
* Release hardware semaphore used to access the PHY or NVM
**/
static void e1000_put_hw_semaphore_82571(struct e1000_hw *hw)
{
u32 swsm;
DEBUGFUNC("e1000_put_hw_semaphore_generic");
swsm = E1000_READ_REG(hw, E1000_SWSM);
swsm &= ~(E1000_SWSM_SMBI | E1000_SWSM_SWESMBI);
E1000_WRITE_REG(hw, E1000_SWSM, swsm);
}
/**
* e1000_get_hw_semaphore_82573 - Acquire hardware semaphore
* e1000_get_hw_semaphore_82574 - Acquire hardware semaphore
* @hw: pointer to the HW structure
*
* Acquire the HW semaphore during reset.
*
**/
static s32 e1000_get_hw_semaphore_82573(struct e1000_hw *hw)
static s32
e1000_get_hw_semaphore_82574(struct e1000_hw *hw)
{
u32 extcnf_ctrl;
s32 i = 0;
/* XXX assert that mutex is held */
DEBUGFUNC("e1000_get_hw_semaphore_82573");
ASSERT_CTX_LOCK_HELD(hw);
extcnf_ctrl = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
do {
extcnf_ctrl |= E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP;
@ -615,7 +533,7 @@ static s32 e1000_get_hw_semaphore_82573(struct e1000_hw *hw)
if (i == MDIO_OWNERSHIP_TIMEOUT) {
/* Release semaphores */
e1000_put_hw_semaphore_82573(hw);
e1000_put_hw_semaphore_82574(hw);
DEBUGOUT("Driver can't access the PHY\n");
return -E1000_ERR_PHY;
}
@ -624,58 +542,24 @@ static s32 e1000_get_hw_semaphore_82573(struct e1000_hw *hw)
}
/**
* e1000_put_hw_semaphore_82573 - Release hardware semaphore
* e1000_put_hw_semaphore_82574 - Release hardware semaphore
* @hw: pointer to the HW structure
*
* Release hardware semaphore used during reset.
*
**/
static void e1000_put_hw_semaphore_82573(struct e1000_hw *hw)
static void
e1000_put_hw_semaphore_82574(struct e1000_hw *hw)
{
u32 extcnf_ctrl;
DEBUGFUNC("e1000_put_hw_semaphore_82573");
DEBUGFUNC("e1000_put_hw_semaphore_82574");
extcnf_ctrl = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
extcnf_ctrl &= ~E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP;
E1000_WRITE_REG(hw, E1000_EXTCNF_CTRL, extcnf_ctrl);
}
/**
* e1000_get_hw_semaphore_82574 - Acquire hardware semaphore
* @hw: pointer to the HW structure
*
* Acquire the HW semaphore to access the PHY or NVM.
*
**/
static s32 e1000_get_hw_semaphore_82574(struct e1000_hw *hw)
{
s32 ret_val;
DEBUGFUNC("e1000_get_hw_semaphore_82574");
E1000_MUTEX_LOCK(&hw->dev_spec._82571.swflag_mutex);
ret_val = e1000_get_hw_semaphore_82573(hw);
if (ret_val)
E1000_MUTEX_UNLOCK(&hw->dev_spec._82571.swflag_mutex);
return ret_val;
}
/**
* e1000_put_hw_semaphore_82574 - Release hardware semaphore
* @hw: pointer to the HW structure
*
* Release hardware semaphore used to access the PHY or NVM
*
**/
static void e1000_put_hw_semaphore_82574(struct e1000_hw *hw)
{
DEBUGFUNC("e1000_put_hw_semaphore_82574");
e1000_put_hw_semaphore_82573(hw);
E1000_MUTEX_UNLOCK(&hw->dev_spec._82571.swflag_mutex);
}
/**
* e1000_set_d0_lplu_state_82574 - Set Low Power Linkup D0 state
* @hw: pointer to the HW structure
@ -747,7 +631,7 @@ static s32 e1000_acquire_nvm_82571(struct e1000_hw *hw)
DEBUGFUNC("e1000_acquire_nvm_82571");
ret_val = e1000_get_hw_semaphore_82571(hw);
ret_val = e1000_get_hw_semaphore(hw);
if (ret_val)
return ret_val;
@ -760,7 +644,7 @@ static s32 e1000_acquire_nvm_82571(struct e1000_hw *hw)
}
if (ret_val)
e1000_put_hw_semaphore_82571(hw);
e1000_put_hw_semaphore(hw);
return ret_val;
}
@ -776,7 +660,7 @@ static void e1000_release_nvm_82571(struct e1000_hw *hw)
DEBUGFUNC("e1000_release_nvm_82571");
e1000_release_nvm_generic(hw);
e1000_put_hw_semaphore_82571(hw);
e1000_put_hw_semaphore(hw);
}
/**
@ -1093,8 +977,6 @@ static s32 e1000_reset_hw_82571(struct e1000_hw *hw)
*/
switch (hw->mac.type) {
case e1000_82573:
ret_val = e1000_get_hw_semaphore_82573(hw);
break;
case e1000_82574:
case e1000_82583:
ret_val = e1000_get_hw_semaphore_82574(hw);
@ -1111,10 +993,6 @@ static s32 e1000_reset_hw_82571(struct e1000_hw *hw)
/* Must release MDIO ownership and mutex after MAC reset. */
switch (hw->mac.type) {
case e1000_82573:
/* Release mutex only if the hw semaphore is acquired */
if (!ret_val)
e1000_put_hw_semaphore_82573(hw);
break;
case e1000_82574:
case e1000_82583:
/* Release mutex only if the hw semaphore is acquired */
@ -1122,6 +1000,7 @@ static s32 e1000_reset_hw_82571(struct e1000_hw *hw)
e1000_put_hw_semaphore_82574(hw);
break;
default:
panic("unknown mac type %x\n", hw->mac.type);
break;
}

92
sys/dev/e1000/e1000_82575.c
View File

@ -80,11 +80,9 @@ static s32 e1000_valid_led_default_82575(struct e1000_hw *hw, u16 *data);
static s32 e1000_write_phy_reg_sgmii_82575(struct e1000_hw *hw,
u32 offset, u16 data);
static void e1000_clear_hw_cntrs_82575(struct e1000_hw *hw);
static s32 e1000_acquire_swfw_sync_82575(struct e1000_hw *hw, u16 mask);
static s32 e1000_get_pcs_speed_and_duplex_82575(struct e1000_hw *hw,
u16 *speed, u16 *duplex);
static s32 e1000_get_phy_id_82575(struct e1000_hw *hw);
static void e1000_release_swfw_sync_82575(struct e1000_hw *hw, u16 mask);
static bool e1000_sgmii_active_82575(struct e1000_hw *hw);
static s32 e1000_reset_init_script_82575(struct e1000_hw *hw);
static s32 e1000_read_mac_addr_82575(struct e1000_hw *hw);
@ -512,12 +510,8 @@ static s32 e1000_init_mac_params_82575(struct e1000_hw *hw)
/* link info */
mac->ops.get_link_up_info = e1000_get_link_up_info_82575;
/* acquire SW_FW sync */
mac->ops.acquire_swfw_sync = e1000_acquire_swfw_sync_82575;
mac->ops.release_swfw_sync = e1000_release_swfw_sync_82575;
if (mac->type >= e1000_i210) {
mac->ops.acquire_swfw_sync = e1000_acquire_swfw_sync_i210;
mac->ops.release_swfw_sync = e1000_release_swfw_sync_i210;
}
mac->ops.acquire_swfw_sync = e1000_acquire_swfw_sync;
mac->ops.release_swfw_sync = e1000_release_swfw_sync;
/* set lan id for port to determine which phy lock to use */
hw->mac.ops.set_lan_id(hw);
@ -989,7 +983,7 @@ static s32 e1000_acquire_nvm_82575(struct e1000_hw *hw)
DEBUGFUNC("e1000_acquire_nvm_82575");
ret_val = e1000_acquire_swfw_sync_82575(hw, E1000_SWFW_EEP_SM);
ret_val = e1000_acquire_swfw_sync(hw, E1000_SWFW_EEP_SM);
if (ret_val)
goto out;
@ -1020,7 +1014,7 @@ static s32 e1000_acquire_nvm_82575(struct e1000_hw *hw)
ret_val = e1000_acquire_nvm_generic(hw);
if (ret_val)
e1000_release_swfw_sync_82575(hw, E1000_SWFW_EEP_SM);
e1000_release_swfw_sync(hw, E1000_SWFW_EEP_SM);
out:
return ret_val;
@ -1039,83 +1033,7 @@ static void e1000_release_nvm_82575(struct e1000_hw *hw)
e1000_release_nvm_generic(hw);
e1000_release_swfw_sync_82575(hw, E1000_SWFW_EEP_SM);
}
/**
* e1000_acquire_swfw_sync_82575 - Acquire SW/FW semaphore
* @hw: pointer to the HW structure
* @mask: specifies which semaphore to acquire
*
* Acquire the SW/FW semaphore to access the PHY or NVM. The mask
* will also specify which port we're acquiring the lock for.
**/
static s32 e1000_acquire_swfw_sync_82575(struct e1000_hw *hw, u16 mask)
{
u32 swfw_sync;
u32 swmask = mask;
u32 fwmask = mask << 16;
s32 ret_val = E1000_SUCCESS;
s32 i = 0, timeout = 200;
DEBUGFUNC("e1000_acquire_swfw_sync_82575");
while (i < timeout) {
if (e1000_get_hw_semaphore_generic(hw)) {
ret_val = -E1000_ERR_SWFW_SYNC;
goto out;
}
swfw_sync = E1000_READ_REG(hw, E1000_SW_FW_SYNC);
if (!(swfw_sync & (fwmask | swmask)))
break;
/*
* Firmware currently using resource (fwmask)
* or other software thread using resource (swmask)
*/
e1000_put_hw_semaphore_generic(hw);
msec_delay_irq(5);
i++;
}
if (i == timeout) {
DEBUGOUT("Driver can't access resource, SW_FW_SYNC timeout.\n");
ret_val = -E1000_ERR_SWFW_SYNC;
goto out;
}
swfw_sync |= swmask;
E1000_WRITE_REG(hw, E1000_SW_FW_SYNC, swfw_sync);
e1000_put_hw_semaphore_generic(hw);
out:
return ret_val;
}
/**
* e1000_release_swfw_sync_82575 - Release SW/FW semaphore
* @hw: pointer to the HW structure
* @mask: specifies which semaphore to acquire
*
* Release the SW/FW semaphore used to access the PHY or NVM. The mask
* will also specify which port we're releasing the lock for.
**/
static void e1000_release_swfw_sync_82575(struct e1000_hw *hw, u16 mask)
{
u32 swfw_sync;
DEBUGFUNC("e1000_release_swfw_sync_82575");
while (e1000_get_hw_semaphore_generic(hw) != E1000_SUCCESS)
; /* Empty */
swfw_sync = E1000_READ_REG(hw, E1000_SW_FW_SYNC);
swfw_sync &= ~mask;
E1000_WRITE_REG(hw, E1000_SW_FW_SYNC, swfw_sync);
e1000_put_hw_semaphore_generic(hw);
e1000_release_swfw_sync(hw, E1000_SWFW_EEP_SM);
}
/**

3
sys/dev/e1000/e1000_hw.h
View File

@ -944,7 +944,6 @@ struct e1000_dev_spec_82543 {
struct e1000_dev_spec_82571 {
bool laa_is_present;
u32 smb_counter;
E1000_MUTEX swflag_mutex;
};
struct e1000_dev_spec_80003es2lan {
@ -968,8 +967,6 @@ enum e1000_ulp_state {
struct e1000_dev_spec_ich8lan {
bool kmrn_lock_loss_workaround_enabled;
struct e1000_shadow_ram shadow_ram[E1000_SHADOW_RAM_WORDS];
E1000_MUTEX nvm_mutex;
E1000_MUTEX swflag_mutex;
bool nvm_k1_enabled;
bool disable_k1_off;
bool eee_disable;

150
sys/dev/e1000/e1000_i210.c
View File

@ -38,7 +38,6 @@
static s32 e1000_acquire_nvm_i210(struct e1000_hw *hw);
static void e1000_release_nvm_i210(struct e1000_hw *hw);
static s32 e1000_get_hw_semaphore_i210(struct e1000_hw *hw);
static s32 e1000_write_nvm_srwr(struct e1000_hw *hw, u16 offset, u16 words,
u16 *data);
static s32 e1000_pool_flash_update_done_i210(struct e1000_hw *hw);
@ -59,7 +58,7 @@ static s32 e1000_acquire_nvm_i210(struct e1000_hw *hw)
DEBUGFUNC("e1000_acquire_nvm_i210");
ret_val = e1000_acquire_swfw_sync_i210(hw, E1000_SWFW_EEP_SM);
ret_val = e1000_acquire_swfw_sync(hw, E1000_SWFW_EEP_SM);
return ret_val;
}
@ -75,152 +74,7 @@ static void e1000_release_nvm_i210(struct e1000_hw *hw)
{
DEBUGFUNC("e1000_release_nvm_i210");
e1000_release_swfw_sync_i210(hw, E1000_SWFW_EEP_SM);
}
/**
* e1000_acquire_swfw_sync_i210 - Acquire SW/FW semaphore
* @hw: pointer to the HW structure
* @mask: specifies which semaphore to acquire
*
* Acquire the SW/FW semaphore to access the PHY or NVM. The mask
* will also specify which port we're acquiring the lock for.
**/
s32 e1000_acquire_swfw_sync_i210(struct e1000_hw *hw, u16 mask)
{
u32 swfw_sync;
u32 swmask = mask;
u32 fwmask = mask << 16;
s32 ret_val = E1000_SUCCESS;
s32 i = 0, timeout = 200; /* FIXME: find real value to use here */
DEBUGFUNC("e1000_acquire_swfw_sync_i210");
while (i < timeout) {
if (e1000_get_hw_semaphore_i210(hw)) {
ret_val = -E1000_ERR_SWFW_SYNC;
goto out;
}
swfw_sync = E1000_READ_REG(hw, E1000_SW_FW_SYNC);
if (!(swfw_sync & (fwmask | swmask)))
break;
/*
* Firmware currently using resource (fwmask)
* or other software thread using resource (swmask)
*/
e1000_put_hw_semaphore_generic(hw);
msec_delay_irq(5);
i++;
}
if (i == timeout) {
DEBUGOUT("Driver can't access resource, SW_FW_SYNC timeout.\n");
ret_val = -E1000_ERR_SWFW_SYNC;
goto out;
}
swfw_sync |= swmask;
E1000_WRITE_REG(hw, E1000_SW_FW_SYNC, swfw_sync);
e1000_put_hw_semaphore_generic(hw);
out:
return ret_val;
}
/**
* e1000_release_swfw_sync_i210 - Release SW/FW semaphore
* @hw: pointer to the HW structure
* @mask: specifies which semaphore to acquire
*
* Release the SW/FW semaphore used to access the PHY or NVM. The mask
* will also specify which port we're releasing the lock for.
**/
void e1000_release_swfw_sync_i210(struct e1000_hw *hw, u16 mask)
{
u32 swfw_sync;
DEBUGFUNC("e1000_release_swfw_sync_i210");
while (e1000_get_hw_semaphore_i210(hw) != E1000_SUCCESS)
; /* Empty */
swfw_sync = E1000_READ_REG(hw, E1000_SW_FW_SYNC);
swfw_sync &= ~mask;
E1000_WRITE_REG(hw, E1000_SW_FW_SYNC, swfw_sync);
e1000_put_hw_semaphore_generic(hw);
}
/**
* e1000_get_hw_semaphore_i210 - Acquire hardware semaphore
* @hw: pointer to the HW structure
*
* Acquire the HW semaphore to access the PHY or NVM
**/
static s32 e1000_get_hw_semaphore_i210(struct e1000_hw *hw)
{
u32 swsm;
s32 timeout = hw->nvm.word_size + 1;
s32 i = 0;
DEBUGFUNC("e1000_get_hw_semaphore_i210");
/* Get the SW semaphore */
while (i < timeout) {
swsm = E1000_READ_REG(hw, E1000_SWSM);
if (!(swsm & E1000_SWSM_SMBI))
break;
usec_delay(50);
i++;
}
if (i == timeout) {
/* In rare circumstances, the SW semaphore may already be held
* unintentionally. Clear the semaphore once before giving up.
*/
if (hw->dev_spec._82575.clear_semaphore_once) {
hw->dev_spec._82575.clear_semaphore_once = FALSE;
e1000_put_hw_semaphore_generic(hw);
for (i = 0; i < timeout; i++) {
swsm = E1000_READ_REG(hw, E1000_SWSM);
if (!(swsm & E1000_SWSM_SMBI))
break;
usec_delay(50);
}
}
/* If we do not have the semaphore here, we have to give up. */
if (i == timeout) {
DEBUGOUT("Driver can't access device - SMBI bit is set.\n");
return -E1000_ERR_NVM;
}
}
/* Get the FW semaphore. */
for (i = 0; i < timeout; i++) {
swsm = E1000_READ_REG(hw, E1000_SWSM);
E1000_WRITE_REG(hw, E1000_SWSM, swsm | E1000_SWSM_SWESMBI);
/* Semaphore acquired if bit latched */
if (E1000_READ_REG(hw, E1000_SWSM) & E1000_SWSM_SWESMBI)
break;
usec_delay(50);
}
if (i == timeout) {
/* Release semaphores */
e1000_put_hw_semaphore_generic(hw);
DEBUGOUT("Driver can't access the NVM\n");
return -E1000_ERR_NVM;
}
return E1000_SUCCESS;
e1000_release_swfw_sync(hw, E1000_SWFW_EEP_SM);
}
/**

2
sys/dev/e1000/e1000_i210.h
View File

@ -44,8 +44,6 @@ s32 e1000_write_nvm_srwr_i210(struct e1000_hw *hw, u16 offset,
u16 words, u16 *data);
s32 e1000_read_nvm_srrd_i210(struct e1000_hw *hw, u16 offset,
u16 words, u16 *data);
s32 e1000_acquire_swfw_sync_i210(struct e1000_hw *hw, u16 mask);
void e1000_release_swfw_sync_i210(struct e1000_hw *hw, u16 mask);
s32 e1000_read_xmdio_reg(struct e1000_hw *hw, u16 addr, u8 dev_addr,
u16 *data);
s32 e1000_write_xmdio_reg(struct e1000_hw *hw, u16 addr, u8 dev_addr,

20
sys/dev/e1000/e1000_ich8lan.c
View File

@ -697,9 +697,6 @@ static s32 e1000_init_nvm_params_ich8lan(struct e1000_hw *hw)
dev_spec->shadow_ram[i].value = 0xFFFF;
}
E1000_MUTEX_INIT(&dev_spec->nvm_mutex);
E1000_MUTEX_INIT(&dev_spec->swflag_mutex);
/* Function Pointers */
nvm->ops.acquire = e1000_acquire_nvm_ich8lan;
nvm->ops.release = e1000_release_nvm_ich8lan;
@ -1852,7 +1849,7 @@ static s32 e1000_acquire_nvm_ich8lan(struct e1000_hw *hw)
{
DEBUGFUNC("e1000_acquire_nvm_ich8lan");
E1000_MUTEX_LOCK(&hw->dev_spec.ich8lan.nvm_mutex);
ASSERT_CTX_LOCK_HELD(hw);
return E1000_SUCCESS;
}
@ -1867,9 +1864,7 @@ static void e1000_release_nvm_ich8lan(struct e1000_hw *hw)
{
DEBUGFUNC("e1000_release_nvm_ich8lan");
E1000_MUTEX_UNLOCK(&hw->dev_spec.ich8lan.nvm_mutex);
return;
ASSERT_CTX_LOCK_HELD(hw);
}
/**
@ -1886,7 +1881,7 @@ static s32 e1000_acquire_swflag_ich8lan(struct e1000_hw *hw)
DEBUGFUNC("e1000_acquire_swflag_ich8lan");
E1000_MUTEX_LOCK(&hw->dev_spec.ich8lan.swflag_mutex);
ASSERT_CTX_LOCK_HELD(hw);
while (timeout) {
extcnf_ctrl = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
@ -1927,9 +1922,6 @@ static s32 e1000_acquire_swflag_ich8lan(struct e1000_hw *hw)
}
out:
if (ret_val)
E1000_MUTEX_UNLOCK(&hw->dev_spec.ich8lan.swflag_mutex);
return ret_val;
}
@ -1954,10 +1946,6 @@ static void e1000_release_swflag_ich8lan(struct e1000_hw *hw)
} else {
DEBUGOUT("Semaphore unexpectedly released by sw/fw/hw\n");
}
E1000_MUTEX_UNLOCK(&hw->dev_spec.ich8lan.swflag_mutex);
return;
}
/**
@ -5032,8 +5020,6 @@ static s32 e1000_reset_hw_ich8lan(struct e1000_hw *hw)
E1000_WRITE_REG(hw, E1000_FEXTNVM3, reg);
}
if (!ret_val)
E1000_MUTEX_UNLOCK(&hw->dev_spec.ich8lan.swflag_mutex);
if (ctrl & E1000_CTRL_PHY_RST) {
ret_val = hw->phy.ops.get_cfg_done(hw);

253
sys/dev/e1000/e1000_mac.c
View File

@ -1707,76 +1707,6 @@ s32 e1000_get_speed_and_duplex_fiber_serdes_generic(struct e1000_hw E1000_UNUSED
return E1000_SUCCESS;
}
/**
* e1000_get_hw_semaphore_generic - Acquire hardware semaphore
* @hw: pointer to the HW structure
*
* Acquire the HW semaphore to access the PHY or NVM
**/
s32 e1000_get_hw_semaphore_generic(struct e1000_hw *hw)
{
u32 swsm;
s32 timeout = hw->nvm.word_size + 1;
s32 i = 0;
DEBUGFUNC("e1000_get_hw_semaphore_generic");
/* Get the SW semaphore */
while (i < timeout) {
swsm = E1000_READ_REG(hw, E1000_SWSM);
if (!(swsm & E1000_SWSM_SMBI))
break;
usec_delay(50);
i++;
}
if (i == timeout) {
DEBUGOUT("Driver can't access device - SMBI bit is set.\n");
return -E1000_ERR_NVM;
}
/* Get the FW semaphore. */
for (i = 0; i < timeout; i++) {
swsm = E1000_READ_REG(hw, E1000_SWSM);
E1000_WRITE_REG(hw, E1000_SWSM, swsm | E1000_SWSM_SWESMBI);
/* Semaphore acquired if bit latched */
if (E1000_READ_REG(hw, E1000_SWSM) & E1000_SWSM_SWESMBI)
break;
usec_delay(50);
}
if (i == timeout) {
/* Release semaphores */
e1000_put_hw_semaphore_generic(hw);
DEBUGOUT("Driver can't access the NVM\n");
return -E1000_ERR_NVM;
}
return E1000_SUCCESS;
}
/**
* e1000_put_hw_semaphore_generic - Release hardware semaphore
* @hw: pointer to the HW structure
*
* Release hardware semaphore used to access the PHY or NVM
**/
void e1000_put_hw_semaphore_generic(struct e1000_hw *hw)
{
u32 swsm;
DEBUGFUNC("e1000_put_hw_semaphore_generic");
swsm = E1000_READ_REG(hw, E1000_SWSM);
swsm &= ~(E1000_SWSM_SMBI | E1000_SWSM_SWESMBI);
E1000_WRITE_REG(hw, E1000_SWSM, swsm);
}
/**
* e1000_get_auto_rd_done_generic - Check for auto read completion
* @hw: pointer to the HW structure
@ -2252,3 +2182,186 @@ s32 e1000_write_8bit_ctrl_reg_generic(struct e1000_hw *hw, u32 reg,
return E1000_SUCCESS;
}
/**
* e1000_get_hw_semaphore - Acquire hardware semaphore
* @hw: pointer to the HW structure
*
* Acquire the HW semaphore to access the PHY or NVM
**/
s32 e1000_get_hw_semaphore(struct e1000_hw *hw)
{
u32 swsm;
s32 timeout = hw->nvm.word_size + 1;
s32 i = 0;
DEBUGFUNC("e1000_get_hw_semaphore");
#ifdef notyet
/* _82571 */
/* If we have timedout 3 times on trying to acquire
* the inter-port SMBI semaphore, there is old code
* operating on the other port, and it is not
* releasing SMBI. Modify the number of times that
* we try for the semaphore to interwork with this
* older code.
*/
if (hw->dev_spec._82571.smb_counter > 2)
sw_timeout = 1;
#endif
/* Get the SW semaphore */
while (i < timeout) {
swsm = E1000_READ_REG(hw, E1000_SWSM);
if (!(swsm & E1000_SWSM_SMBI))
break;
usec_delay(50);
i++;
}
if (i == timeout) {
#ifdef notyet
/*
* XXX This sounds more like a driver bug whereby we either
* recursed accidentally or missed clearing it previously
*/
/* In rare circumstances, the SW semaphore may already be held
* unintentionally. Clear the semaphore once before giving up.
*/
if (hw->dev_spec._82575.clear_semaphore_once) {
hw->dev_spec._82575.clear_semaphore_once = FALSE;
e1000_put_hw_semaphore_generic(hw);
for (i = 0; i < timeout; i++) {
swsm = E1000_READ_REG(hw, E1000_SWSM);
if (!(swsm & E1000_SWSM_SMBI))
break;
usec_delay(50);
}
}
#endif
DEBUGOUT("Driver can't access device - SMBI bit is set.\n");
return -E1000_ERR_NVM;
}
/* Get the FW semaphore. */
for (i = 0; i < timeout; i++) {
swsm = E1000_READ_REG(hw, E1000_SWSM);
E1000_WRITE_REG(hw, E1000_SWSM, swsm | E1000_SWSM_SWESMBI);
/* Semaphore acquired if bit latched */
if (E1000_READ_REG(hw, E1000_SWSM) & E1000_SWSM_SWESMBI)
break;
usec_delay(50);
}
if (i == timeout) {
/* Release semaphores */
e1000_put_hw_semaphore(hw);
DEBUGOUT("Driver can't access the NVM\n");
return -E1000_ERR_NVM;
}
return E1000_SUCCESS;
}
/**
* e1000_put_hw_semaphore - Release hardware semaphore
* @hw: pointer to the HW structure
*
* Release hardware semaphore used to access the PHY or NVM
**/
void e1000_put_hw_semaphore(struct e1000_hw *hw)
{
u32 swsm;
DEBUGFUNC("e1000_put_hw_semaphore");
swsm = E1000_READ_REG(hw, E1000_SWSM);
swsm &= ~(E1000_SWSM_SMBI | E1000_SWSM_SWESMBI);
E1000_WRITE_REG(hw, E1000_SWSM, swsm);
}
/**
* e1000_acquire_swfw_sync - Acquire SW/FW semaphore
* @hw: pointer to the HW structure
* @mask: specifies which semaphore to acquire
*
* Acquire the SW/FW semaphore to access the PHY or NVM. The mask
* will also specify which port we're acquiring the lock for.
**/
s32
e1000_acquire_swfw_sync(struct e1000_hw *hw, u16 mask)
{
u32 swfw_sync;
u32 swmask = mask;
u32 fwmask = mask << 16;
s32 ret_val = E1000_SUCCESS;
s32 i = 0, timeout = 200;
DEBUGFUNC("e1000_acquire_swfw_sync");
ASSERT_NO_LOCKS();
while (i < timeout) {
if (e1000_get_hw_semaphore(hw)) {
ret_val = -E1000_ERR_SWFW_SYNC;
goto out;
}
swfw_sync = E1000_READ_REG(hw, E1000_SW_FW_SYNC);
if (!(swfw_sync & (fwmask | swmask)))
break;
/*
* Firmware currently using resource (fwmask)
* or other software thread using resource (swmask)
*/
e1000_put_hw_semaphore(hw);
msec_delay_irq(5);
i++;
}
if (i == timeout) {
DEBUGOUT("Driver can't access resource, SW_FW_SYNC timeout.\n");
ret_val = -E1000_ERR_SWFW_SYNC;
goto out;
}
swfw_sync |= swmask;
E1000_WRITE_REG(hw, E1000_SW_FW_SYNC, swfw_sync);
e1000_put_hw_semaphore(hw);
out:
return ret_val;
}
/**
* e1000_release_swfw_sync - Release SW/FW semaphore
* @hw: pointer to the HW structure
* @mask: specifies which semaphore to acquire
*
* Release the SW/FW semaphore used to access the PHY or NVM. The mask
* will also specify which port we're releasing the lock for.
**/
void
e1000_release_swfw_sync(struct e1000_hw *hw, u16 mask)
{
u32 swfw_sync;
DEBUGFUNC("e1000_release_swfw_sync");
while (e1000_get_hw_semaphore(hw) != E1000_SUCCESS)
; /* Empty */
swfw_sync = E1000_READ_REG(hw, E1000_SW_FW_SYNC);
swfw_sync &= ~mask;
E1000_WRITE_REG(hw, E1000_SW_FW_SYNC, swfw_sync);
e1000_put_hw_semaphore(hw);
}

7
sys/dev/e1000/e1000_mac.h
View File

@ -61,7 +61,6 @@ s32 e1000_get_bus_info_pci_generic(struct e1000_hw *hw);
s32 e1000_get_bus_info_pcie_generic(struct e1000_hw *hw);
void e1000_set_lan_id_single_port(struct e1000_hw *hw);
void e1000_set_lan_id_multi_port_pci(struct e1000_hw *hw);
s32 e1000_get_hw_semaphore_generic(struct e1000_hw *hw);
s32 e1000_get_speed_and_duplex_copper_generic(struct e1000_hw *hw, u16 *speed,
u16 *duplex);
s32 e1000_get_speed_and_duplex_fiber_serdes_generic(struct e1000_hw *hw,
@ -86,11 +85,15 @@ void e1000_clear_hw_cntrs_base_generic(struct e1000_hw *hw);
void e1000_clear_vfta_generic(struct e1000_hw *hw);
void e1000_init_rx_addrs_generic(struct e1000_hw *hw, u16 rar_count);
void e1000_pcix_mmrbc_workaround_generic(struct e1000_hw *hw);
void e1000_put_hw_semaphore_generic(struct e1000_hw *hw);
s32 e1000_check_alt_mac_addr_generic(struct e1000_hw *hw);
void e1000_reset_adaptive_generic(struct e1000_hw *hw);
void e1000_set_pcie_no_snoop_generic(struct e1000_hw *hw, u32 no_snoop);
void e1000_update_adaptive_generic(struct e1000_hw *hw);
void e1000_write_vfta_generic(struct e1000_hw *hw, u32 offset, u32 value);
s32 e1000_get_hw_semaphore(struct e1000_hw *hw);
void e1000_put_hw_semaphore(struct e1000_hw *hw);
s32 e1000_acquire_swfw_sync(struct e1000_hw *hw, u16 mask);
void e1000_release_swfw_sync(struct e1000_hw *hw, u16 mask);
#endif

78
sys/dev/e1000/e1000_osdep.h
View File

@ -40,6 +40,7 @@
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/mbuf.h>
@ -48,6 +49,14 @@
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/iflib.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
@ -59,11 +68,40 @@
#define ASSERT(x) if(!(x)) panic("EM: x")
#define us_scale(x) max(1, (x/(1000000/hz)))
static inline int
ms_scale(int x) {
if (hz == 1000) {
return (x);
} else if (hz > 1000) {
return (x*(hz/1000));
} else {
return (max(1, x/(1000/hz)));
}
}
#define usec_delay(x) DELAY(x)
static inline void
safe_pause_us(int x) {
if (cold) {
DELAY(x);
} else {
pause("e1000_delay", max(1, x/(1000000/hz)));
}
}
static inline void
safe_pause_ms(int x) {
if (cold) {
DELAY(x*1000);
} else {
pause("e1000_delay", ms_scale(x));
}
}
#define usec_delay(x) safe_pause_us(x)
#define usec_delay_irq(x) usec_delay(x)
#define msec_delay(x) DELAY(1000*(x))
#define msec_delay_irq(x) DELAY(1000*(x))
#define msec_delay(x) safe_pause_ms(x)
#define msec_delay_irq(x) msec_delay(x)
/* Enable/disable debugging statements in shared code */
#define DBG 0
@ -82,16 +120,6 @@
#define CMD_MEM_WRT_INVALIDATE 0x0010 /* BIT_4 */
#define PCI_COMMAND_REGISTER PCIR_COMMAND
/* Mutex used in the shared code */
#define E1000_MUTEX struct mtx
#define E1000_MUTEX_INIT(mutex) mtx_init((mutex), #mutex, \
MTX_NETWORK_LOCK, \
MTX_DEF | MTX_DUPOK)
#define E1000_MUTEX_DESTROY(mutex) mtx_destroy(mutex)
#define E1000_MUTEX_LOCK(mutex) mtx_lock(mutex)
#define E1000_MUTEX_TRYLOCK(mutex) mtx_trylock(mutex)
#define E1000_MUTEX_UNLOCK(mutex) mtx_unlock(mutex)
typedef uint64_t u64;
typedef uint32_t u32;
typedef uint16_t u16;
@ -117,6 +145,12 @@ typedef int8_t s8;
#endif
#endif /*__FreeBSD_version < 800000 */
#ifdef INVARIANTS
#define ASSERT_CTX_LOCK_HELD(hw) (sx_assert(iflib_ctx_lock_get(((struct e1000_osdep *)hw->back)->ctx), SX_XLOCKED))
#else
#define ASSERT_CTX_LOCK_HELD(hw)
#endif
#if defined(__i386__) || defined(__amd64__)
static __inline
void prefetch(void *x)
@ -136,6 +170,7 @@ struct e1000_osdep
bus_space_tag_t flash_bus_space_tag;
bus_space_handle_t flash_bus_space_handle;
device_t dev;
if_ctx_t ctx;
};
#define E1000_REGISTER(hw, reg) (((hw)->mac.type >= e1000_82543) \
@ -217,5 +252,22 @@ struct e1000_osdep
bus_space_write_2(((struct e1000_osdep *)(hw)->back)->flash_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->flash_bus_space_handle, reg, value)
#if defined(INVARIANTS)
#include <sys/proc.h>
#define ASSERT_NO_LOCKS() \
do { \
int unknown_locks = curthread->td_locks - mtx_owned(&Giant); \
if (unknown_locks > 0) { \
WITNESS_WARN(WARN_GIANTOK|WARN_SLEEPOK|WARN_PANIC, NULL, "unexpected non-sleepable lock"); \
} \
MPASS(curthread->td_rw_rlocks == 0); \
MPASS(curthread->td_lk_slocks == 0); \
} while (0)
#else
#define ASSERT_NO_LOCKS()
#endif
#endif /* _FREEBSD_OS_H_ */

17
sys/dev/e1000/if_em.c
View File

@ -736,7 +736,7 @@ em_if_attach_pre(if_ctx_t ctx)
return (ENXIO);
}
adapter->ctx = ctx;
adapter->ctx = adapter->osdep.ctx = ctx;
adapter->dev = adapter->osdep.dev = dev;
scctx = adapter->shared = iflib_get_softc_ctx(ctx);
adapter->media = iflib_get_media(ctx);
@ -1684,13 +1684,6 @@ em_if_timer(if_ctx_t ctx, uint16_t qid)
return;
iflib_admin_intr_deferred(ctx);
/* Reset LAA into RAR[0] on 82571 */
if ((adapter->hw.mac.type == e1000_82571) &&
e1000_get_laa_state_82571(&adapter->hw))
e1000_rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
if (adapter->hw.mac.type < em_mac_min)
lem_smartspeed(adapter);
/* Mask to use in the irq trigger */
if (adapter->intr_type == IFLIB_INTR_MSIX) {
@ -1801,6 +1794,14 @@ em_if_update_admin_status(if_ctx_t ctx)
}
em_update_stats_counters(adapter);
/* Reset LAA into RAR[0] on 82571 */
if ((adapter->hw.mac.type == e1000_82571) &&
e1000_get_laa_state_82571(&adapter->hw))
e1000_rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
if (adapter->hw.mac.type < em_mac_min)
lem_smartspeed(adapter);
E1000_WRITE_REG(&adapter->hw, E1000_IMS, EM_MSIX_LINK | E1000_IMS_LSC);
}