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Message-ID: <def6e99b-7224-abfc-88c7-f2c1932e12c2@pensando.io>
Date: Fri, 30 Aug 2019 12:18:31 -0700
From: Shannon Nelson <snelson@...sando.io>
To: Jakub Kicinski <jakub.kicinski@...ronome.com>
Cc: netdev@...r.kernel.org, davem@...emloft.net
Subject: Re: [PATCH v6 net-next 04/19] ionic: Add port management commands
On 8/29/19 3:46 PM, Jakub Kicinski wrote:
> On Thu, 29 Aug 2019 11:27:05 -0700, Shannon Nelson wrote:
>> The port management commands apply to the physical port
>> associated with the PCI device, which might be shared among
>> several logical interfaces.
>>
>> Signed-off-by: Shannon Nelson <snelson@...sando.io>
>> ---
>> drivers/net/ethernet/pensando/ionic/ionic.h | 4 +
>> .../ethernet/pensando/ionic/ionic_bus_pci.c | 16 ++++
>> .../net/ethernet/pensando/ionic/ionic_dev.c | 92 +++++++++++++++++++
>> .../net/ethernet/pensando/ionic/ionic_dev.h | 13 +++
>> .../net/ethernet/pensando/ionic/ionic_main.c | 86 +++++++++++++++++
>> 5 files changed, 211 insertions(+)
>>
>> diff --git a/drivers/net/ethernet/pensando/ionic/ionic.h b/drivers/net/ethernet/pensando/ionic/ionic.h
>> index 89ad9c590736..4960effd2bcc 100644
>> --- a/drivers/net/ethernet/pensando/ionic/ionic.h
>> +++ b/drivers/net/ethernet/pensando/ionic/ionic.h
>> @@ -42,4 +42,8 @@ int ionic_identify(struct ionic *ionic);
>> int ionic_init(struct ionic *ionic);
>> int ionic_reset(struct ionic *ionic);
>>
>> +int ionic_port_identify(struct ionic *ionic);
>> +int ionic_port_init(struct ionic *ionic);
>> +int ionic_port_reset(struct ionic *ionic);
>> +
>> #endif /* _IONIC_H_ */
>> diff --git a/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c b/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
>> index 286b4b450a73..804dd43e92a6 100644
>> --- a/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
>> +++ b/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
>> @@ -138,12 +138,27 @@ static int ionic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
>> goto err_out_teardown;
>> }
>>
>> + /* Configure the ports */
>> + err = ionic_port_identify(ionic);
>> + if (err) {
>> + dev_err(dev, "Cannot identify port: %d, aborting\n", err);
>> + goto err_out_reset;
>> + }
>> +
>> + err = ionic_port_init(ionic);
>> + if (err) {
>> + dev_err(dev, "Cannot init port: %d, aborting\n", err);
>> + goto err_out_reset;
>> + }
>> +
>> err = ionic_devlink_register(ionic);
>> if (err)
>> dev_err(dev, "Cannot register devlink: %d\n", err);
>>
>> return 0;
>>
>> +err_out_reset:
>> + ionic_reset(ionic);
>> err_out_teardown:
>> ionic_dev_teardown(ionic);
>> err_out_unmap_bars:
>> @@ -170,6 +185,7 @@ static void ionic_remove(struct pci_dev *pdev)
>> return;
>>
>> ionic_devlink_unregister(ionic);
>> + ionic_port_reset(ionic);
>> ionic_reset(ionic);
>> ionic_dev_teardown(ionic);
>> ionic_unmap_bars(ionic);
>> diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.c b/drivers/net/ethernet/pensando/ionic/ionic_dev.c
>> index 0bf1bd6bd7b1..3137776e9191 100644
>> --- a/drivers/net/ethernet/pensando/ionic/ionic_dev.c
>> +++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.c
>> @@ -134,3 +134,95 @@ void ionic_dev_cmd_reset(struct ionic_dev *idev)
>>
>> ionic_dev_cmd_go(idev, &cmd);
>> }
>> +
>> +/* Port commands */
>> +void ionic_dev_cmd_port_identify(struct ionic_dev *idev)
>> +{
>> + union ionic_dev_cmd cmd = {
>> + .port_init.opcode = IONIC_CMD_PORT_IDENTIFY,
>> + .port_init.index = 0,
>> + };
>> +
>> + ionic_dev_cmd_go(idev, &cmd);
>> +}
>> +
>> +void ionic_dev_cmd_port_init(struct ionic_dev *idev)
>> +{
>> + union ionic_dev_cmd cmd = {
>> + .port_init.opcode = IONIC_CMD_PORT_INIT,
>> + .port_init.index = 0,
>> + .port_init.info_pa = cpu_to_le64(idev->port_info_pa),
>> + };
>> +
>> + ionic_dev_cmd_go(idev, &cmd);
>> +}
>> +
>> +void ionic_dev_cmd_port_reset(struct ionic_dev *idev)
>> +{
>> + union ionic_dev_cmd cmd = {
>> + .port_reset.opcode = IONIC_CMD_PORT_RESET,
>> + .port_reset.index = 0,
>> + };
>> +
>> + ionic_dev_cmd_go(idev, &cmd);
>> +}
>> +
>> +void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state)
>> +{
>> + union ionic_dev_cmd cmd = {
>> + .port_setattr.opcode = IONIC_CMD_PORT_SETATTR,
>> + .port_setattr.index = 0,
>> + .port_setattr.attr = IONIC_PORT_ATTR_STATE,
>> + .port_setattr.state = state,
>> + };
>> +
>> + ionic_dev_cmd_go(idev, &cmd);
>> +}
>> +
>> +void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed)
>> +{
>> + union ionic_dev_cmd cmd = {
>> + .port_setattr.opcode = IONIC_CMD_PORT_SETATTR,
>> + .port_setattr.index = 0,
>> + .port_setattr.attr = IONIC_PORT_ATTR_SPEED,
>> + .port_setattr.speed = cpu_to_le32(speed),
>> + };
>> +
>> + ionic_dev_cmd_go(idev, &cmd);
>> +}
>> +
>> +void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable)
>> +{
>> + union ionic_dev_cmd cmd = {
>> + .port_setattr.opcode = IONIC_CMD_PORT_SETATTR,
>> + .port_setattr.index = 0,
>> + .port_setattr.attr = IONIC_PORT_ATTR_AUTONEG,
>> + .port_setattr.an_enable = an_enable,
>> + };
>> +
>> + ionic_dev_cmd_go(idev, &cmd);
>> +}
>> +
>> +void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type)
>> +{
>> + union ionic_dev_cmd cmd = {
>> + .port_setattr.opcode = IONIC_CMD_PORT_SETATTR,
>> + .port_setattr.index = 0,
>> + .port_setattr.attr = IONIC_PORT_ATTR_FEC,
>> + .port_setattr.fec_type = fec_type,
>> + };
>> +
>> + ionic_dev_cmd_go(idev, &cmd);
>> +}
>> +
>> +void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type)
>> +{
>> + union ionic_dev_cmd cmd = {
>> + .port_setattr.opcode = IONIC_CMD_PORT_SETATTR,
>> + .port_setattr.index = 0,
>> + .port_setattr.attr = IONIC_PORT_ATTR_PAUSE,
>> + .port_setattr.pause_type = pause_type,
>> + };
>> +
>> + ionic_dev_cmd_go(idev, &cmd);
>> +}
> Hm. So you haven't moved those?
They make for a nice consistent bundle of service routines that get used
in a later patch in this patchset, and helps keep that other patch a
little leaner and perhaps easier to review.
>
>> diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.h b/drivers/net/ethernet/pensando/ionic/ionic_dev.h
>> index 7050545a83aa..81b6910aabc1 100644
>> --- a/drivers/net/ethernet/pensando/ionic/ionic_dev.h
>> +++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.h
>> @@ -117,6 +117,10 @@ struct ionic_dev {
>> struct ionic_intr __iomem *intr_ctrl;
>> u64 __iomem *intr_status;
>>
>> + u32 port_info_sz;
>> + struct ionic_port_info *port_info;
>> + dma_addr_t port_info_pa;
>> +
>> struct ionic_devinfo dev_info;
>> };
>>
>> @@ -135,4 +139,13 @@ void ionic_dev_cmd_identify(struct ionic_dev *idev, u8 ver);
>> void ionic_dev_cmd_init(struct ionic_dev *idev);
>> void ionic_dev_cmd_reset(struct ionic_dev *idev);
>>
>> +void ionic_dev_cmd_port_identify(struct ionic_dev *idev);
>> +void ionic_dev_cmd_port_init(struct ionic_dev *idev);
>> +void ionic_dev_cmd_port_reset(struct ionic_dev *idev);
>> +void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state);
>> +void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed);
>> +void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable);
>> +void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type);
>> +void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type);
>> +
>> #endif /* _IONIC_DEV_H_ */
>> diff --git a/drivers/net/ethernet/pensando/ionic/ionic_main.c b/drivers/net/ethernet/pensando/ionic/ionic_main.c
>> index 5c311b9241ee..96de2789587d 100644
>> --- a/drivers/net/ethernet/pensando/ionic/ionic_main.c
>> +++ b/drivers/net/ethernet/pensando/ionic/ionic_main.c
>> @@ -317,6 +317,92 @@ int ionic_reset(struct ionic *ionic)
>> return err;
>> }
>>
>> +int ionic_port_identify(struct ionic *ionic)
>> +{
>> + struct ionic_identity *ident = &ionic->ident;
>> + struct ionic_dev *idev = &ionic->idev;
>> + size_t sz;
>> + int err;
>> +
>> + mutex_lock(&ionic->dev_cmd_lock);
>> +
>> + ionic_dev_cmd_port_identify(idev);
>> + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
>> + if (!err) {
>> + sz = min(sizeof(ident->port), sizeof(idev->dev_cmd_regs->data));
>> + memcpy_fromio(&ident->port, &idev->dev_cmd_regs->data, sz);
>> + }
>> +
>> + mutex_unlock(&ionic->dev_cmd_lock);
>> +
>> + return err;
>> +}
>> +
>> +int ionic_port_init(struct ionic *ionic)
>> +{
>> + struct ionic_identity *ident = &ionic->ident;
>> + struct ionic_dev *idev = &ionic->idev;
>> + size_t sz;
>> + int err;
>> +
>> + if (idev->port_info)
>> + return 0;
>> +
>> + idev->port_info_sz = ALIGN(sizeof(*idev->port_info), PAGE_SIZE);
>> + idev->port_info = dma_alloc_coherent(ionic->dev, idev->port_info_sz,
>> + &idev->port_info_pa,
>> + GFP_KERNEL);
>> + if (!idev->port_info) {
>> + dev_err(ionic->dev, "Failed to allocate port info, aborting\n");
>> + return -ENOMEM;
>> + }
>> +
>> + sz = min(sizeof(ident->port.config), sizeof(idev->dev_cmd_regs->data));
>> +
>> + mutex_lock(&ionic->dev_cmd_lock);
>> +
>> + memcpy_toio(&idev->dev_cmd_regs->data, &ident->port.config, sz);
>> + ionic_dev_cmd_port_init(idev);
>> + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
>> +
>> + ionic_dev_cmd_port_state(&ionic->idev, IONIC_PORT_ADMIN_STATE_UP);
>> + (void)ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
>> +
>> + mutex_unlock(&ionic->dev_cmd_lock);
>> + if (err) {
>> + dev_err(ionic->dev, "Failed to init port\n");
>> + dma_free_coherent(ionic->dev, idev->port_info_sz,
>> + idev->port_info, idev->port_info_pa);
> idev->port_info = NULL;
Yep
Thanks,
sln
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