| /* Cypress West Bridge API source file (cyaslep2pep.c) |
| ## =========================== |
| ## Copyright (C) 2010 Cypress Semiconductor |
| ## |
| ## This program is free software; you can redistribute it and/or |
| ## modify it under the terms of the GNU General Public License |
| ## as published by the Free Software Foundation; either version 2 |
| ## of the License, or (at your option) any later version. |
| ## |
| ## This program is distributed in the hope that it will be useful, |
| ## but WITHOUT ANY WARRANTY; without even the implied warranty of |
| ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| ## GNU General Public License for more details. |
| ## |
| ## You should have received a copy of the GNU General Public License |
| ## along with this program; if not, write to the Free Software |
| ## Foundation, Inc., 51 Franklin Street, Fifth Floor |
| ## Boston, MA 02110-1301, USA. |
| ## =========================== |
| */ |
| |
| #include "../../include/linux/westbridge/cyashal.h" |
| #include "../../include/linux/westbridge/cyasusb.h" |
| #include "../../include/linux/westbridge/cyaserr.h" |
| #include "../../include/linux/westbridge/cyaslowlevel.h" |
| #include "../../include/linux/westbridge/cyasdma.h" |
| |
| typedef enum cy_as_physical_endpoint_state { |
| cy_as_e_p_free, |
| cy_as_e_p_in, |
| cy_as_e_p_out, |
| cy_as_e_p_iso_in, |
| cy_as_e_p_iso_out |
| } cy_as_physical_endpoint_state; |
| |
| |
| /* |
| * This map is used to map an index between 1 and 10 |
| * to a logical endpoint number. This is used to map |
| * LEP register indexes into actual EP numbers. |
| */ |
| static cy_as_end_point_number_t end_point_map[] = { |
| 3, 5, 7, 9, 10, 11, 12, 13, 14, 15 }; |
| |
| #define CY_AS_EPCFG_1024 (1 << 3) |
| #define CY_AS_EPCFG_DBL (0x02) |
| #define CY_AS_EPCFG_TRIPLE (0x03) |
| #define CY_AS_EPCFG_QUAD (0x00) |
| |
| /* |
| * NB: This table contains the register values for PEP1 |
| * and PEP3. PEP2 and PEP4 only have a bit to change the |
| * direction of the PEP and therefre are not represented |
| * in this table. |
| */ |
| static uint8_t pep_register_values[12][4] = { |
| /* Bit 1:0 buffering, 0 = quad, 2 = double, 3 = triple */ |
| /* Bit 3 size, 0 = 512, 1 = 1024 */ |
| { |
| CY_AS_EPCFG_DBL, |
| CY_AS_EPCFG_DBL, |
| },/* Config 1 - PEP1 (2 * 512), PEP2 (2 * 512), |
| * PEP3 (2 * 512), PEP4 (2 * 512) */ |
| { |
| CY_AS_EPCFG_DBL, |
| CY_AS_EPCFG_QUAD, |
| }, /* Config 2 - PEP1 (2 * 512), PEP2 (2 * 512), |
| * PEP3 (4 * 512), PEP4 (N/A) */ |
| { |
| CY_AS_EPCFG_DBL, |
| CY_AS_EPCFG_DBL | CY_AS_EPCFG_1024, |
| },/* Config 3 - PEP1 (2 * 512), PEP2 (2 * 512), |
| * PEP3 (2 * 1024), PEP4(N/A) */ |
| { |
| CY_AS_EPCFG_QUAD, |
| CY_AS_EPCFG_DBL, |
| },/* Config 4 - PEP1 (4 * 512), PEP2 (N/A), |
| * PEP3 (2 * 512), PEP4 (2 * 512) */ |
| { |
| CY_AS_EPCFG_QUAD, |
| CY_AS_EPCFG_QUAD, |
| },/* Config 5 - PEP1 (4 * 512), PEP2 (N/A), |
| * PEP3 (4 * 512), PEP4 (N/A) */ |
| { |
| CY_AS_EPCFG_QUAD, |
| CY_AS_EPCFG_1024 | CY_AS_EPCFG_DBL, |
| },/* Config 6 - PEP1 (4 * 512), PEP2 (N/A), |
| * PEP3 (2 * 1024), PEP4 (N/A) */ |
| { |
| CY_AS_EPCFG_1024 | CY_AS_EPCFG_DBL, |
| CY_AS_EPCFG_DBL, |
| },/* Config 7 - PEP1 (2 * 1024), PEP2 (N/A), |
| * PEP3 (2 * 512), PEP4 (2 * 512) */ |
| { |
| CY_AS_EPCFG_1024 | CY_AS_EPCFG_DBL, |
| CY_AS_EPCFG_QUAD, |
| },/* Config 8 - PEP1 (2 * 1024), PEP2 (N/A), |
| * PEP3 (4 * 512), PEP4 (N/A) */ |
| { |
| CY_AS_EPCFG_1024 | CY_AS_EPCFG_DBL, |
| CY_AS_EPCFG_1024 | CY_AS_EPCFG_DBL, |
| },/* Config 9 - PEP1 (2 * 1024), PEP2 (N/A), |
| * PEP3 (2 * 1024), PEP4 (N/A)*/ |
| { |
| CY_AS_EPCFG_TRIPLE, |
| CY_AS_EPCFG_TRIPLE, |
| },/* Config 10 - PEP1 (3 * 512), PEP2 (N/A), |
| * PEP3 (3 * 512), PEP4 (2 * 512)*/ |
| { |
| CY_AS_EPCFG_TRIPLE | CY_AS_EPCFG_1024, |
| CY_AS_EPCFG_DBL, |
| },/* Config 11 - PEP1 (3 * 1024), PEP2 (N/A), |
| * PEP3 (N/A), PEP4 (2 * 512) */ |
| { |
| CY_AS_EPCFG_QUAD | CY_AS_EPCFG_1024, |
| CY_AS_EPCFG_DBL, |
| },/* Config 12 - PEP1 (4 * 1024), PEP2 (N/A), |
| * PEP3 (N/A), PEP4 (N/A) */ |
| }; |
| |
| static cy_as_return_status_t |
| find_endpoint_directions(cy_as_device *dev_p, |
| cy_as_physical_endpoint_state epstate[4]) |
| { |
| int i; |
| cy_as_physical_endpoint_state desired; |
| |
| /* |
| * note, there is no error checking here because |
| * ISO error checking happens when the API is called. |
| */ |
| for (i = 0; i < 10; i++) { |
| int epno = end_point_map[i]; |
| if (dev_p->usb_config[epno].enabled) { |
| int pep = dev_p->usb_config[epno].physical; |
| if (dev_p->usb_config[epno].type == cy_as_usb_iso) { |
| /* |
| * marking this as an ISO endpoint, removes the |
| * physical EP from consideration when |
| * mapping the remaining E_ps. |
| */ |
| if (dev_p->usb_config[epno].dir == cy_as_usb_in) |
| desired = cy_as_e_p_iso_in; |
| else |
| desired = cy_as_e_p_iso_out; |
| } else { |
| if (dev_p->usb_config[epno].dir == cy_as_usb_in) |
| desired = cy_as_e_p_in; |
| else |
| desired = cy_as_e_p_out; |
| } |
| |
| /* |
| * NB: Note the API calls insure that an ISO endpoint |
| * has a physical and logical EP number that are the |
| * same, therefore this condition is not enforced here. |
| */ |
| if (epstate[pep - 1] != |
| cy_as_e_p_free && epstate[pep - 1] != desired) |
| return CY_AS_ERROR_INVALID_CONFIGURATION; |
| |
| epstate[pep - 1] = desired; |
| } |
| } |
| |
| /* |
| * create the EP1 config values directly. |
| * both EP1OUT and EP1IN are invalid by default. |
| */ |
| dev_p->usb_ep1cfg[0] = 0; |
| dev_p->usb_ep1cfg[1] = 0; |
| if (dev_p->usb_config[1].enabled) { |
| if ((dev_p->usb_config[1].dir == cy_as_usb_out) || |
| (dev_p->usb_config[1].dir == cy_as_usb_in_out)) { |
| /* Set the valid bit and type field. */ |
| dev_p->usb_ep1cfg[0] = (1 << 7); |
| if (dev_p->usb_config[1].type == cy_as_usb_bulk) |
| dev_p->usb_ep1cfg[0] |= (2 << 4); |
| else |
| dev_p->usb_ep1cfg[0] |= (3 << 4); |
| } |
| |
| if ((dev_p->usb_config[1].dir == cy_as_usb_in) || |
| (dev_p->usb_config[1].dir == cy_as_usb_in_out)) { |
| /* Set the valid bit and type field. */ |
| dev_p->usb_ep1cfg[1] = (1 << 7); |
| if (dev_p->usb_config[1].type == cy_as_usb_bulk) |
| dev_p->usb_ep1cfg[1] |= (2 << 4); |
| else |
| dev_p->usb_ep1cfg[1] |= (3 << 4); |
| } |
| } |
| |
| return CY_AS_ERROR_SUCCESS; |
| } |
| |
| static void |
| create_register_settings(cy_as_device *dev_p, |
| cy_as_physical_endpoint_state epstate[4]) |
| { |
| int i; |
| uint8_t v; |
| |
| for (i = 0; i < 4; i++) { |
| if (i == 0) { |
| /* Start with the values that specify size */ |
| dev_p->usb_pepcfg[i] = |
| pep_register_values |
| [dev_p->usb_phy_config - 1][0]; |
| } else if (i == 2) { |
| /* Start with the values that specify size */ |
| dev_p->usb_pepcfg[i] = |
| pep_register_values |
| [dev_p->usb_phy_config - 1][1]; |
| } else |
| dev_p->usb_pepcfg[i] = 0; |
| |
| /* Adjust direction if it is in */ |
| if (epstate[i] == cy_as_e_p_iso_in || |
| epstate[i] == cy_as_e_p_in) |
| dev_p->usb_pepcfg[i] |= (1 << 6); |
| } |
| |
| /* Configure the logical EP registers */ |
| for (i = 0; i < 10; i++) { |
| int val; |
| int epnum = end_point_map[i]; |
| |
| v = 0x10; /* PEP 1, Bulk Endpoint, EP not valid */ |
| if (dev_p->usb_config[epnum].enabled) { |
| v |= (1 << 7); /* Enabled */ |
| |
| val = dev_p->usb_config[epnum].physical - 1; |
| cy_as_hal_assert(val >= 0 && val <= 3); |
| v |= (val << 5); |
| |
| switch (dev_p->usb_config[epnum].type) { |
| case cy_as_usb_bulk: |
| val = 2; |
| break; |
| case cy_as_usb_int: |
| val = 3; |
| break; |
| case cy_as_usb_iso: |
| val = 1; |
| break; |
| default: |
| cy_as_hal_assert(cy_false); |
| break; |
| } |
| v |= (val << 3); |
| } |
| |
| dev_p->usb_lepcfg[i] = v; |
| } |
| } |
| |
| |
| cy_as_return_status_t |
| cy_as_usb_map_logical2_physical(cy_as_device *dev_p) |
| { |
| cy_as_return_status_t ret; |
| |
| /* Physical EPs 3 5 7 9 respectively in the array */ |
| cy_as_physical_endpoint_state epstate[4] = { |
| cy_as_e_p_free, cy_as_e_p_free, |
| cy_as_e_p_free, cy_as_e_p_free }; |
| |
| /* Find the direction for the endpoints */ |
| ret = find_endpoint_directions(dev_p, epstate); |
| if (ret != CY_AS_ERROR_SUCCESS) |
| return ret; |
| |
| /* |
| * now create the register settings based on the given |
| * assigned of logical E_ps to physical endpoints. |
| */ |
| create_register_settings(dev_p, epstate); |
| |
| return ret; |
| } |
| |
| static uint16_t |
| get_max_dma_size(cy_as_device *dev_p, cy_as_end_point_number_t ep) |
| { |
| uint16_t size = dev_p->usb_config[ep].size; |
| |
| if (size == 0) { |
| switch (dev_p->usb_config[ep].type) { |
| case cy_as_usb_control: |
| size = 64; |
| break; |
| |
| case cy_as_usb_bulk: |
| size = cy_as_device_is_usb_high_speed(dev_p) ? |
| 512 : 64; |
| break; |
| |
| case cy_as_usb_int: |
| size = cy_as_device_is_usb_high_speed(dev_p) ? |
| 1024 : 64; |
| break; |
| |
| case cy_as_usb_iso: |
| size = cy_as_device_is_usb_high_speed(dev_p) ? |
| 1024 : 1023; |
| break; |
| } |
| } |
| |
| return size; |
| } |
| |
| cy_as_return_status_t |
| cy_as_usb_set_dma_sizes(cy_as_device *dev_p) |
| { |
| cy_as_return_status_t ret = CY_AS_ERROR_SUCCESS; |
| uint32_t i; |
| |
| for (i = 0; i < 10; i++) { |
| cy_as_usb_end_point_config *config_p = |
| &dev_p->usb_config[end_point_map[i]]; |
| if (config_p->enabled) { |
| ret = cy_as_dma_set_max_dma_size(dev_p, |
| end_point_map[i], |
| get_max_dma_size(dev_p, end_point_map[i])); |
| if (ret != CY_AS_ERROR_SUCCESS) |
| break; |
| } |
| } |
| |
| return ret; |
| } |
| |
| cy_as_return_status_t |
| cy_as_usb_setup_dma(cy_as_device *dev_p) |
| { |
| cy_as_return_status_t ret = CY_AS_ERROR_SUCCESS; |
| uint32_t i; |
| |
| for (i = 0; i < 10; i++) { |
| cy_as_usb_end_point_config *config_p = |
| &dev_p->usb_config[end_point_map[i]]; |
| if (config_p->enabled) { |
| /* Map the endpoint direction to the DMA direction */ |
| cy_as_dma_direction dir = cy_as_direction_out; |
| if (config_p->dir == cy_as_usb_in) |
| dir = cy_as_direction_in; |
| |
| ret = cy_as_dma_enable_end_point(dev_p, |
| end_point_map[i], cy_true, dir); |
| if (ret != CY_AS_ERROR_SUCCESS) |
| break; |
| } |
| } |
| |
| return ret; |
| } |